bluuebunny/crossref_metadata_2025 huggingface dataset:
Synthesis of Poly(β-cyclodextrin-maleic anhydride) Conjugated Magnetic Nanoparticles via RAFT Polymerization for Adsorption of Organic Compound
Authors: Ni Ming , Cheng Yi Ming , Shi Dong Jian , Li Peng Yun , Chen Ming Qing
Published: June 2014

In this paper, novel magnetic nanoparticles by initiating maleic anhydride-β-cyclodextrin (MAHCD) polymerization onto the surface of Fe3O4 nanoparticles were prepared. Firstly, MNPs were modified by silane couple agent, and then the modified MNPs reacted with 3-benzylsulfanyl thiocarbonyl sulfanyl propionic acid chloride to obtain RAFT chain transfer modified Fe3O4 nanoparticles. Then, maleic anhydride-β-cyclodextrin (MAHCD) was prepared by the reaction of maleic anhydride with β-cyclodextrin. Finally, MNP@P(MAHCD-co-MMA) nanoparticles were prepared using MAHCD and methyl methacrylate (MMA) as monomers and modified Fe3O4 nanoparticles as chain transfer agent by RAFT in the presence of initiator AIBN. The structure and size of the MNP@P(MAHCD-co-MMA) nanoparticles were confirmed by FTIR, TGA, XRD and TEM. The results showed that the MNP@P(MAHCD-co-MMA) nanoparticles about 200 nm were successfully prepared. Moreover, the MNP@P(MAHCD-co-MMA) nanoparticles showed well adsorption property using hydroxylbenzoic acid as the guest compound. Therefore, the MNP@P(MAHCD-co-MMA) nanoparticles have the capability to adsorb suitable guest compounds, and could be used for water treatment.
The Block Optimizing Selection and Eco-Environmental Problems of China Shale Gas Exploration and Development
Authors: Yue Ting , Hu She Rong , Zhang Yu , Li Xiao Fei
Published: June 2014

China mainland shale gas exploration and development are carrying out gradually. According to shale gas enrichment degree, water resources distribution and the practice of exploration and development, China mainland shale gas resources can be divided into five blocks. On this basis, the author preliminary discussed the distribution of water resources and eco-environmental problems during shale gas exploration and development. Considering the practice of shale gas exploration and development and water resources situation, the author put forward that the Upper Yangtze and Yunnan-Guizhou-Guangxi region would be the most favourable block, and there are problems with China mainland shale gas exploration and development, such as large water consumption, well drilling water leakage and mud loss which would contaminate groundwater. In addition, shale gas well injection (grouting) might cause the occurrence of seismic events. After analyzing the two different kinds of opinions on whether China mainland shale gas exploration and development would cause environmental problems, the author pointed out that, without a doubt, there exist eco-environmental problems during shale gas exploration and development, and further proposed that we should put the environmental protection at first place and take the road of environment-friendly shale gas exploration and development by reference to the exploration and practice of shale gas development both of China and other advanced countries in the world.
The Fuzzy Comprehensive Evaluation of the Plant Communities Degree of Degradation of Prairie Meadows
Authors: Li Wu Ri Ji Mu Si , hai Hai Tang
Published: June 2014

The comprehensive evalution of the different plant communities diversity and degradation of Prairie Meadows. The result showed that, with the increase of grassland degradation degree, the composition of communities species was single, quantity gradually decreased, the change of species important value was obvious, the communities coverage, the communities height, ground production value was obvious decreasing trend; Plant communities a:diversity index, Margalef abundance, Simpson:advantage index Shanon-wiener:diversity index and Pielou:a verage index all have obvious decreasing, communities of similarity index has increasing trend. At the basis of indicator System fuzzy comprehensive evaluation review that the rang of indicating degree respectively:vegetation communities fence:1～0.7370,light grazing areas:0.7370～0.8117,moderate grazing areas:0.8117～0.4890,heavy grazing area:0.4890～0.
The Green Port Grade Evaluation Method Based on AHP
Authors: Zhu Li , Peng Chuan Sheng , He Weijian
Published: June 2014

This paper explored the application of AHP in green port grade evaluation by constructing a green port evaluation system to determine the index weight, and on this basis proposed evaluation scoring and grading standards. Finally, the experiment proved the scientific evaluation and applicability of the method.
Relationship between Number of Tourists and Environment of Scenic
Authors: Liu Yu Mei , Dong Yu Dan , Wu Jing
Published: June 2014

The environmental bearing capacity of tourism resources has important significance for the sustainable development of tourism scenic spot. Papers from the relationship between the number of tourists and scenic environment between the established model, and model analysis obtained by the specific relationship between the number of visitors and the number of environmental pollution levels. By analyzing the results in favor of tourism environmental systems and components, and accurately grasp the scale between tourism development and resource protection, and development of tourism resources can be scientific.
Validation of Aerosol Optical Depth from HJ-1 CCD Retrievals
Authors: Li Dan , Sun Chang Kui , Yu Kun , Sun Lin , Du Lei
Published: June 2014

This study compares the aerosol optical depth (AOD) from the HJ-1 CCD cameras with ground-based measurements of AEROSOL ROBOTIC NETWORK (AERONET). The results indicate that the HJ-1 CCD AOD retrievals at 550 nm have good correlations with the ground-based measurements. This validation study indicates that the HJ-1 CCD AOD retrievals can adequately characterize the AOD distributions over the dense dark vegetation region of China. This AOD product can act an important role to study air pollution.
Comprehensive Benefits Analysis of the Artificial Ecological Wetland Construction in Tianjin Harbor Economic Area
Authors: Huang Guo Zhu , Zhu Tan , Ji Yi Jun , Hu Jun , Wen Tie
Published: June 2014

Tianjin Harbor Economic Area is one of the important functional areas of Tianjin Binhai New Area. At present, its artificial wetland ecological construction has started running. In this paper, the comprehensive benefits of artificial ecological wetland are analyzed in terms of ecological, social, economic. Including the industrial park wastewater treatment, water conservation, increase biodiversity, promote regional low-carbon development, beautify the landscape of industrial parks, produce the best possible results of ecological publicity and education function and promote regional economic development. The analysis showed that the artificial ecological wetland in Tianjin Harbor Economic Area has broad application prospects for such large-scale industrial parks, and it can be used as demonstration to promote ecological industrial park construction.
Ecological Security Research of the Northern Slope of Qinling Mountains under the Impact of Tourism Activities
Authors: Liu Shi Dong , Gao Jun , Pan Wei Tao
Published: June 2014

The ecological security of the piedmont area has been a focus in the research of mountain ecosystem. However, with the development of the urbanization, the research of mountain ecological security under the impact of human activities, especially in the city which near the mountain, the research of protection and development of piedmont area seems not updated enough. Therefore, this paper selected Northern slope of Qinling Mountains in Xi’an, and made tourism activities the major driving factor for ecological security of tourism environment in piedmont area, thus establishing an ecological security evaluation system of piedmont tourism environment, based on DPSIR Model. The result showed that tourism development would enhance the ecological security level of regional tourism environment, and tourism activities would exert positive impact on regional tourism environment. The conclusions include: (1) Before 2007, the tourist environment of Huxian had been in an unsafe state, but in 2013, the ecological security level was largely raised; (2)The tourism ecological security in Chang’an is higher than that in Huxian District, and the ecological security level had already got into the safe state level
Eutrophication Evaluation of Lake Based on Cloud Model
Authors: Li Fan Xiu , Lu Mian , Yi Shao Jin
Published: June 2014

Considering the fuzzy and stochastic feature in assessment, a new assessment model based on cloud theory is proposed. The new model can realize greatly the conversion from qualitative conception to quantitative model. Taking the new model into evaluating water quality of lake eutrophication, the evaluation model based on cloud theory can not only show the fuzzy feature of grade, but also indicate random attribute of membership. The method is developed to evaluate lake eutrophication status, and the results show that the new evaluation model is feasible and can effectively evaluate eutrophication level.
Integrating Climate Change Consideration into Strategic Environmental Assessment within the Context of China
Authors: Deng Bao Le , Wang Hui Zhi
Published: June 2014

Climate change has been highlighted as an apparent and urgent issue in environmental research fields. Transport, as the third carbon emitter sector in China, is partly responsible for climate change. It is necessary to modify the existing Strategic Environmental Assessment (SEA) system for transportation planning so as to cope with the challenges of Climate Change. In this paper, we tried to integrate climate change consideration into SEA process, and proposed the framework and indicator system for SEA considering climate change.
Research on Measures to Strengthen Environmental Risk Management of Chemicals in Jiangsu Province
Authors: Yang Li
Published: June 2014

The problem of environment pollution and risk of chemicals is extremely serious. As an important chemical province, Jiangsu Province shall pay much attention to strengthening environmental management of chemicals. The paper analyzes the current management of chemicals at home and abroad and difficulties faced by environmental management of chemicals. According to the actual situation in Jiangsu Province, this paper offers some measures and suggestions for strengthening environmental management of chemicals.
Research on the Influence of a Traffic Jam to the Gasoline Vehicles’ Emission
Authors: Sun Long Lin , Huang Wen Wei , Gao Mou Rong
Published: June 2014

The gasoline vehicles’ on-road emission experiments were carried out with the portable emission measuring system (PEMS) during the clear time and the congestive time. Then the emission characteristics during each time period were analyzed. The experiment data show that a traffic jam increases the CO and HC emission and the peak values appear during the accelerating period. But the NOX emission is reduced due to the low engine temperature during the traffic jam.
A Review of Changes in Chinese Environmental Regulation System
Authors: Zhang Jing , Zhou Meng Han
Published: June 2014

With the Chinese economic system reforming and industrializing, the Chinese environmental regulation system has experienced from weak to well developed. Starting from the specific changes in environmental regulation system and development situation, here mainly consists a single period of the planned economy environment rules and regulations system, the transition period of transition economy environment rules and regulations system, and modern market economy environment system analysis.
Environmental Assessment of Different Flood-Discharge Layout Plans in Baihetan Hydro-Power Project
Authors: Zhang Di , Jiang Chun Bo
Published: June 2014

The optimized design and layout of diverse flood-discharge devices are of great importance for improving the security and reliability of the dams in hydro-power engineering and minimizing their impacts on the regional ecological environment in environmental engineering. In this paper, various kinds of surface and mid-level outlets configurations are compared under multiple operational conditions for the Baihetan hydro-power project. In addition, both the time-averaged and the instantaneous fluctuation impact-pressure distributions in the plunge pool under typical working conditions are measured and investigated in order to study the reasonability of different flood-discharge layout plans. Moreover, the complex hydrodynamic environment and the spatial evolution of time-averaged flow fields along the downstream river are surveyed and further analyzed. The results could serve as the foundation of selecting the optimal flood-discharge and energy-dissipation design, and, more generally, references for the regional ecological environment assessment for Jinsha River after the construction of Baihetan dam.
Feasibility Analysis of Ecological Compensation for Coal Resource Type City Based on Economic Externalities
Authors: Feng Si Jing , Zhang Xin Lian , Li Wen Jie
Published: June 2014

The economic growth mode of coal resource type cities in China is in an extensive operating way, and resulting in tremendous waste of resources and environmental pollution intensifies. This article analyzed the use of economic theory of externalities of coal mining activities from the point of some relevant environmental economics principles, proposed the urban ecological compensation connotation of coal resource type city, and analyzed the feasibility of the implementation of ecological compensation from economic viewpoint. In this research£¬not only laid a foundation for ecological compensation goals, principles, methods and compensation standards, but also provided an economic reference for building ecological compensation mechanism of coal resource type city.
A Brief Talk about the Development Prospect of Low-Carbon and Environment-Friendly Fabric
Authors: Zhang Jian Hong , Cui Yu Mei
Published: June 2014

For the people living in the 21st century, whether the clothing and foods are healthy has become one of the hot topics. People are increasingly concerned about the aspects that involve human beings’ physical and mental health, such as low carbon, environmental protection, health and green issues. However, as the consumption subject of the contemporary era, the youngsters born in the 1980s and 1990s have higher requirements for the life styles and the low carbon and environment-friendly living and consumption concepts seem to better cater to their consumption views. Being one of the objects that are most closely related to people's health, clothing is badly related to people's health and environment. The paper will combine the writer's cognition about the low-carbon environment-friendly fabric and the strengths of such fabric and the contemporary consumers' consumption views to make a systematic elaboration about the development prospect of low-carbon and environment-friendly fabric.
Integrating the Low-Carbon Issue into Strategic Environmental Assessment in China
Authors: Sun Yu Hong , Bai Hong Tao , Yang Yong Hong , Qiao Sheng , Xu He
Published: June 2014

Low-carbon development has become the inevitable choice of China's urban development transformation. However, few researches about the integration of the low-carbon issue and strategic environmental assessment (SEA) have been proposed until now. SEA integrated with low-carbon issues aims to make low-carbon ​​recommendations in the field of urban industrial, energy, transportation, building and living consumption. Based on the discussion, this paper proposed a context-special technological framework of SEA integrated with low-carbon issues.
Research of Water Body Diffusion Condition in Near Field of Inland Nuclear Power Plants in China
Authors: Yang Yang , Qiao Ya Hua , Pan Xin Yi , Liu Yong Ye , Liu Fu Dong , Zhang Ai Ling , Wang Bo , Zhang Chun Ming
Published: June 2014

With the increase in demand for electricity in inland provinces because of economic growth, construction of inland nuclear power plant (npp) has become a trend. Inland npps discharge into the water bodies where may be some drinking water sources downstream, so the impact of radioactive liquid effluent released from inland npps is far greater than that come from coastal npps, and it is necessary to know the hydrodynamic characteristics of the water bodies clearly. A proposed inland npp near the Yangtze River and another near a reservoir were simulated by Cormix respectively. Then analyse the simulation results and suggest to use diffusers to help to initial mixing of contaminants in near field.
Strategies to Control VOCs Emissions from the Petroleum Storage and Transportation Project in Chinese Ports
Authors: Yu Jian Feng , Cui Qing , Du Yun Hui , Chen Fan , Zhan Cun Wei
Published: June 2014

This paper summarized the characteristics and status of VOCs pollution of the harbour petroleum storage project, learnt from the regulation policy and prevention technique of developed countries for controlling VOCs emission from the harbours oil product storage and transportation system, and then put forward suggestions for preventing and controlling VOCs from the oil product storage and transportation projects in Chinese port by considering the requirements of "MARPOL73/78".
Impact of Silica Nanoparticles on the Heterotrophic Denitrification
Authors: Ying Lin , Na Li , Zhou Yu Yang , Jun Yin
Published: June 2014

Silica nanoparticles (Si NPs) have a wide range of uses in semiconductors, battery cathode material, and high power laser source materials. However, Si NPs would flow into the wastewater treatment inevitably, and then potentially harmful interactions can occur between nanoparticles and wastewater systems, especially in denitrification process. The present study was aimed to investigate the effects of Si NPs on nitrate nitrogen removal under anaerobic conditions by employing activated sludge. Our data demonstrates that Si NPs had positive effects on denitrification at the beginning and did not display any measurable effect on nitrite nitrogen removal at the concentration of 100 mg/L and below. The denitrification process was elucidated by using the first-order reaction kinetics equation. This study provided useful data for understanding the effects of Si NPs on wastewater treatment.
Ambient Air Quality Assessment via Comprehensive Evaluation through Automatic Weight Determining
Authors: Li Dai Ying
Published: June 2014

A mathematical model is built for air quality evaluation, which has taken PM2.5, PM10, SO2, NO2, CO and O3 six parameters into consideration. The comprehensive air quality evaluation is carried out via standard deviation method and principle component analysis method; automatic weight determining has been discussed. Correlations of the factors are considered and a preprocess procedure is issued to eliminate the effects. Ambient air quality data of eleven cities are taken as an example and the comprehensive evaluation results are compared, which shows the mathematical model provides a viable approach to environmental assessment.
Study Progress on the Responses and Mitigation Strategies that Tourism Cope with Climate Change – International Mountains and Islands Tourism Destinations as Examples
Authors: Zhang Ming
Published: June 2014

As extreme events related to climate arise constantly, global climate change has become one of the hot issues that people are increasingly concerned about, and correlative studies have been gradually developed. This paper took mountains and islands, two tourism destinations that are vulnerable to climate change, as examples to study responses to climate change and mitigation strategies on influences of climate change in tourism industry, and the results showed that combining broadening sources of income with reducing expenditure could efficiently reduce influences of climate change on tourism industry.
Wuhan Eco-City Index System Creation and Zoning Control
Authors: Bo Li Ming
Published: June 2014

This paper aims to create an eco-city evaluation index system for Wuhan based on a data collection and comparative analysis on a large amount of cases in Wuhan, and a questionnaire survey targeting specialist and professionals. And there should be an emphasis point about the core index selection according to the character of different construction area, creating zoning control, to discuss further about the implementation of eco-city construction in planning aspect.
A Study of City Space Expansion from the Perspective of “Anti-Planning” Concept - Exemplified by Chengdu Metropolitan Area
Authors: Zhu Wei , Li Qing Mei , Ran Mao Mei , Li Qing Song
Published: June 2014

“Anti-planning” theory is a new planning theory relative to traditional planning theory, which stresses that the planning should start from controlling city ecological infrastructures. The thesis sets forth the era background, the “Anti-planning” theory and combined with the actual thinking research about the present situation of Chengdu urban space expansion, according to the plight of ecological, from the perspective of “Anti-planning” Chengdu metro areas ecological security pattern construction this thesis puts forward such as establishing ecological corridor, the landscape ecological solutions. This thesis makes a study of city space expansion from the perspective of anti-planning and gives some thoughts.
Optimisation of the Ethanol-Based Heat Reflux Extraction of Isoflavones from Pueraria lobata (Willd.) Ohwi Root
Authors: Wang Shu Ya , Gao Jun , Chen Yi Lu , Zhou Jun , Yong Xiao Yu , Liu Xiao Ning , Zhang Ya Bing , Liu Xiao Feng , Sun Yong Ming , Zheng Tao
Published: June 2014

Ethanol-based heat reflux extraction has been successfully applied in extracting isoflavone compounds from the dried root of Pueraria lobata (Willd.) Ohwi. The different extraction factors including ethanol concentration, extraction temperature, extraction time, ratio of solid/liquid and number of extraction cycles has been studied on the influence of the extraction yield of isoflavone compounds. And the orthogonal experiment has been used to optimize the extracting conditions. A variety of indicators were employed to evaluate the extraction efficiency, including the yield of puerarin, daidzein and total isoflavone. The optimal extraction technology was as follows: extraction temperature 90°C, ratio of solid/liquid 1:6, ethanol concentration 90% and extraction 2 h. Under the optimal conditions extraction rates of puerarin, daidzein and total isoflavone were 37.51±0.64 mg/g, 2.63±0.03 mg/g and 117.4±0.89 mg/g. The study of this article can provide theoretical basis for large-scale production of puerarin, daidzein and total isoflavone.
The Applied Research of Time-Frequency Analysis Method Employed in Seismic Signal Processing
Authors: Wu Zuo Ju , Wang Zhi Jia , Bi Jun Wei
Published: June 2014

In the traditional processing of seismic signal, the frequency domain analysis method is always available to research some features which always vary with frequency. However, the condition of parameters which vary with time going can’t be considered in this method. So all the information in time domain have been neglected. In this article, time-frequency analysis method called HHT(Hilbert-Huang transform) is applied to analyze the Qingping wave of Wenchuan earthquake meticulously, which is the most advantaged to dissect the change features of the seismic record at different scales. Then we can get the dual properties in time domain and the frequency domain, such as the IMF function of each modal and the instantaneous frequency. For reflecting the time-frequency characteristics exactly and clearly, the Hilbert spectrum has been used to show these messages in the time-frequency plane.
The Research and Summary of Road Deicing Methods
Authors: Zhou Jian Zhao , Han Li Qun , Liu Ai Hua , Tu De Han , Chen Yun He , Xu Xiao Pan
Published: June 2014

In winter, it is very important to get rid of the ice and accumulated snow which are covered in the road so that it can reduce a series of badly accident. Therefore, a variety of road deicing methods are listed in this paper. The advantages and disadvantages of road deicing methods are analyzed. The article enumerates some inductions to several road deicing devices which are used in the cold areas of our country. The paper gives some reference for road deicing devices research.
Study on Modeling Method of Consequence Prediction System in Accidence of Dangerous Source
Authors: Li Yue , Chen Dong Sheng , Cheng Shui Yuan , Huang Qing , Zhang Fan
Published: June 2014

This study developed a prediction system for forecasting consequences of accidents based on real-time meteorological conditions. This system was established by making couple of atmospheric numerical modeling system, atmospheric dispersion model, source emission calculations module and data post-processing module. It is capable to predict concentrations of hazardous gases and harm extents in emergency. This system can provide decision makers with accurate and timely guidance, so as to minimize hazards to people and the environment.
Discussion on Harbor Environmental Risk Assessment Based on Computer Simulation
Authors: Wu Xuan , Jia Xue Hua , Liu Chun Ling
Published: June 2014

The paper reviewed the types, causes and dangers of harbor environmental risks, and took the environmental risk assessment on a typical harbor as an example. The case study carried out regional risk analysis and ship traffic source analysis on location, environmentally sensitive resource distribution, cargo types and volume and regional traffic volume. Pollution on the coastline and the sea by oil and chemical were forecasted through computer numerical simulation combined with scenario analysis. According to the simulation, it is recommended that putting forward appropriate preventive measures in terms of emergency equipment, contingency plans and emergency measures.
Research on Mine Gas Accident Multi-Factor Fuzzy Comprehensive Safety Evaluation
Authors: Liu Wei , Chen Xiao Hong , Wang Jun
Published: June 2014

Gas accident is one of the most common accidents in coal mine in china. This paper argues that the gas dangerousness is determined by many factors which are difficult to quantitative risk, and deems these factors are quantified and fuzzy comprehensive evaluation, comprehensive evaluation, which are benefit evaluation and master the coal mine’s gas safety level, and determine the safety investment direction and improve the benefit of safety investment that will reduce the coal mine gas occurrence probability, so as to reduce and avoid the happening of coal mine gas accident. The basic steps: first, to analyze and master all kinds of gas accident reasons; Second, to determine the assemble of the gas risk factors evaluation, determine the evaluation grade assemble; Third, to proceed the single factor evaluation, determine fuzzy relationship matrix and the fuzzy weight vector of evaluation factor, and to choose the appropriate composition operator, vector analysis with the result of fuzzy comprehensive evaluation; Finally, people will take corresponding measures to prevent according to the result of evaluation that shows safety weaknesses.
Study on Risk Assessment Index System of Public Safety in the Railway Station Region
Authors: Zhang Jing Zhao , Li De Wen , Wang Hong Gang
Published: June 2014

Based on the special circumstances of public safety at the railway station region, the risk assessment index system of public safety in this area is built. Analytic Hierarchy Process is selected as the method of decision making and comprehensive assessment. Taking the characteristics and pattern of historic development of the public safety situation in Xi’an railway station region, the rationality of index weights is verified. Then, the risk assessment of public safety in Xi’an railway station region is conducted through expert investigation and grading. The results show that the system security level of Xi’an railway station region is grade II, the evaluation scores of B1, B2 and B3 are 83.5, 84.4 and 87.8 respectively, the indexes of index layer whose system security level in grade I contain C9, C14, C23, C24, C29, C30, C32 and C35.
Progress of Urban Flood Research and Overall Handling of Urban Flood in China
Authors: Yuan Zhe , Yan Deng Hua , Yang Zhi Yong , Yin Jun
Published: June 2014

Under the background of the climatic changes and the rapid urban development, the occurring frequency of urban floods grows increasingly, the influencing areas gradually spread, and the disaster losses become increasingly severe. The handling of urban flood has already become an issue requiring quick and effective solution during human social developing process. First, the causes of urban flood and the characteristics of disaster losses were analyzed under a changing environment. Then, Combined with the new progresses of relevant researches conducted at home and abroad, the key problems found in the research of urban flood was systematically studied. Moreover, it was pointed out that the urban flood monitoring, assessment, early warning forecast and handling based on modern technologies would become the highlights in the future research. On this basis, the paper summarized the problems existing in the flood handling of Chinese cities and discussed the overall handling frameworks.
A Study on Water Hyacinth Purifying Effect on Different Levels of Eutrophic Water
Authors: Chen Su , Chao Lei , Chen Ning , Wang Lin Shan , Liu Xin , Sun Li Na
Published: June 2014

In this experiment, water hyacinth presents a good purification effect in five kinds of eutrophic waters with initial total nitrogen (TN) and total phosphorus (TP) concentrations in between 8.34~20.45 mg/L and 0.78~1.51 mg/L. After two weeks of purification, TN and TP concentrations of eutrophic waters are reduced to 1.78~5.68 mg/L and 0.25~0.312 mg/L, and TN and TP removal rates are 72.22~78.65% and 67.95~79.34%. Water hyacinth’s TN removal rate decreases as TN initial concentration increases; TP removal rate increases as TP initial concentration increases. Water hyacinth’s average total biomass in eutrophic water has increased by 0.944~1.084 kg/m2, and the average bio-dry-weight has increased by 0.0470~0.0547 kg/m2. The average total biomass and average bio-dry-weight of water hyacinth increase as the eutrophication deepens.
Advances in Researching Cultivation Techniques on the Hyperaccumulators Phytoremediation of Heavy Metal
Authors: Lin Zi Yu , You Shao Hong , Xu Jin , Li Yang , He Chang Jie
Published: June 2014

Using phytoremediation technique to remove contaminants from soil had become a topic in current research.This article expounded the domestic and oversea research progress of hyperaccumulators on cultivation techniques and was systematically elaborated from many aspects,including variety selecting,seedling breeding,fertilizing (nitrogen phosphorus and organic fertilizer),usage of chelator and ameliorant,polyploid breeding,etc.The direction of hyperaccumulators research is put forward that the aboveground biomass and the heavy metal accumulation quantity should be raised through improving cultivation measures,meanwhile a new idea about research of plant tissue culture has been come up with.
An Experimental Study on Compatible Solute Ectoine Dosing of High Salinity Wastewater
Authors: Chen Su , Chao Lei , Chen Ning , Wang Lin Shan , Shao Xue , Sun Li Na
Published: June 2014

When the reactor is added with ectoine of concentrations of 0, 0.1, 1 and 10 mmol/L, the impacts on brine waste treatment efficiency are investigated. The results show that the outflow COD and ammonia nitrogen removal rates are the highest, when the ectoine concentration is 0.1 mmol/L. The brine waste treatment efficiency under addition of ectoine of 1 and 10 mmol/L is even worse than that without ectoine addition. It can be preliminarily determined that the best ectoine dosage is in between 0.1-1.0 mmol/L. When ectoine concentrations added in reactors are 0.2, 0.5, 0.8 and 1.0 mmol/L, the results show that the average reactor outflow COD and ammonia nitrogen removal rates are increased compared with those of reactor without adding ectoine. But when ectoine of 1.0 mmol/L is added, the outflow COD and ammonia nitrogen removal rates decrease. When ectoine dosage is 0.5 mmol/L, the reactor outflow COD and ammonia nitrogen values are the lowest, the removal rates are the highest, the average COD removal rate is 74.46%, and the average ammonium nitrogen removal rate is 54.97%. Compared with reactor without adding ectoine, COD and ammonium nitrogen removal rates are increased by 13.16% and 26.81%. Therefore, the best dosage of ectoine is 0.5 mmol/L.
Application of Desulfurization with Aerodynamic Emulsification Technology in Recycling Lead Industry
Authors: Shu Yue Hong , Liu Xue , Shu Mei Nan , Xue Xin
Published: June 2014

Compared to other desulfurization technologies, aerodynamic emulsification technology has obvious advantages among the whole flue gas desulfurization technologies. This paper describes the characteristics of aerodynamic emulsification technology from the perspectives of the technical and economic, and affirms its development and application in the recycling lead industry with examples, while denying use desulfurization equipment of Italy in China.
Necessity and Feasibility of Legislation on the Utilization of Domestic Sea Water
Authors: Miao Ying Xia , Wang Shu Xun , Zhao Jin , Wang Jing , Zhang Yu Shan
Published: June 2014

From the present situation of legislation on utilization of domestic sea water, this article reveals the contradictions between the shortage of water resources and legislation gaps, explore the necessity and feasibility of build up a framework for legislation on utilization of domestic sea water, which aspect is to promote the healthy development of domestic seawater industry.
Experimental Research of Flue Gas Simultaneous Desulfurization and Denitrification with the New Gas-Liquid Medium
Authors: Yang Yan , Ni Wei Wei , Lv Hao , Li Ding Long , Wang Wei Qiang , Wang Jin
Published: June 2014

The flue gas simultaneous desulfurization and denitrification was studied for its feasibility with the new gas-liquid medium by using Ca(OH)2 as absorbent. The effects on key operating parameters were analyzed. They are pH, inlet temperature of flue gas and inlet concentration of air pollution. When pH is almost 5.5-6, and inlet temperature of flue gas is between 110℃ and 120℃, the results show that the removal efficiency of SO2 and NO are above 85% and 80% using rotating biological technology (RDB), respectively, which can satisfy most requirements of industrial scale applications. Besides, When CSO2 is more than 1500 (mg/m3), with the rising of imported pollutant concentration, desulfurization efficiency continues to increasing and denitrification efficiency was growing slowly.
Investigation of the Accumulation Effect of Pteris vittata L. in Triphenylarsine-Contaminated Soil
Authors: Zhou Ting , You Li Juan , Han Meng Wei , Wang Xue Feng , Wang Hong Juan , Chen Jun Xiang
Published: June 2014

The principle and mechanism of triphenylarsine (TPA) accumulation of arsenic hyper-accumulator-Pteris vittata L was investigated to remediate soil contaminated by abandoned arsenical chemical weapons in somewhere in Jilin Province, by means of soil and water culture in the greenhouse. Through analysis of changes in concentrations of total arsenic and TPA in Pteris vittata L. and in inorganic arsenic concentration of water culture solution, observation of apparent characteristics and determination of organic arsenic forms in Pteris vittata L., results show that Pteris vittata L. could accumulate TPA in soil when the concentration of TPA in soil is less than 150 mg/kg, and the concentration of arsenic in Pteris vittata L. increase initially and then decrease with TPA concentration increasing. When Pteris vittata L. had grown 3 months, the TPA concentration reaches its maximum, i.e. 316.85mg/kg (dry), while, the bioconcentration factor (BCF) decreases gradually. Although Pteris vittata L. still could accumulate TPA after TPA concentration reached more than 150 mg/kg, arsenic concentration in Pteris vittata L. significantly reduce due to stress effect of TPA.
The Application of Response Surface Methodology for Adsorption Optimization of Lead (II) onto Phosphogypusum
Authors: Ning Ping , Yang Yue Hong , Shu Dun Tao , Shi Lei , Cheng Yang
Published: June 2014

Using the phosphogypsum as adsorbent prepared from microwave modified for the removal of lead ions from aqueous solution has been investigated under optimized conditions in this study. Influences of parameters like adsorbent dose 0.5-1.5g/100mL, initial concentration of ions 20–60 mg/L , pH 5.0–7.0 and temperature 20–30°C on Pb ions adsorption were also examined, using Box-Behnken design matrix. Very high regression coefficient between the variables and the response indicates excellent evaluation of experimental data by second order polynomial regression model. The response surface method indicated that adsorbent dose 1.0g/100mL, initial concentration of ions 40mg/L , pH 7.0 and temperature 20°C were optimal for adsorption of Pb ions .
The Effect of Lactate Addition on the Startup of Expanded Granular Sludge Bed for Treatment of Pharmaceutical Wastewater
Authors: Zhao You Kang , Yuan Ye , Ma Xiao Dan , Chen Chuan , Wang Ai Jie
Published: June 2014

The effect of the addition of lactate on the startup of the anaerobic treatment of pharmaceutical wastewater using expanded granular sludge bed (EGSB) was investigated. Two EGSB reactors in the same size were employed. The influent of the reactor was pharmaceutical wastewater (PW), while the influent of the other reactor was the mixed water (MW) of the pharmaceutical wastewater and lactate. When the volumetric loading was 2 kg COD m-3d-1 and 0.4 kg SO42- m-3d-1, the removal efficient was 91% and 90.5%, higher than the influent without lactate. The addition of lactate could improve the removal of COD and sulfate during the startup time.
The Instance Analysis of Mine Geological Environment Protection and Recovery Management
Authors: Wu Qian Qian , Cheng Sheng Gao , Chen Guo Jin
Published: June 2014

This article takes one of the mine in Caidian as an example, it analyzes the mine’s environmental geological problems and hazards, brings out the measures of recovery and management with the development and utilization, summarizes the environmental benefits of the management project. The project is a demonstration of the mine geological environment management in Wuhan. What’s more, it gives reference to similar mines’ geological environment protection and recovery management.
A Preliminary Study of Effects of Wave and Crossflow on Side Discharge of Wastewater
Authors: Dong Zhi Yong , Yu Guo Liang
Published: June 2014

Transverse and longitudinal velocity profiles on the xoy plane at z=0 and 5cm of side discharge jet under the action of crossflow and wave, velocity vectors on the xoy plane at z=0 and 5cm of side discharge jet under the action of wave and crossflow were measured by Micro ADV in this paper, respectively. Effects of wave and crossflow on velocity profiles and velocity vectors of side discharge jet were analyzed. The preliminary experimental results showed that transverse velocity profiles of side discharge jet centerline was less affected by crossflow and wave, however, effects on transverse and longitudinal velocities over the jet centerline were significant. Also, velocity vectors over of side discharge jet centerline were remarkably affected by wave and crossflow though velocity vectors on the jet centerline was less affected.
Researches on Constructed Wetlands Running Problems and Treatment Measures in Cold Areas
Authors: Zhao Jun , Zhang Jie , Shi Yu Min , Wang Xi
Published: June 2014

Constructed wetland is a new type of water treatment technology which has been in great price for its characteristic including low cost, simplicity of operator and landscape value. Climatic environment and temperature has a strong influence to the wetlands which restricts the application of constructed wetlands in the northern cold areas. This paper elaborated the technical progress of constructed wetlands, analyzed the problems in the operational process of constructed wetlands located in low-temperate areas in winter, offered some solving measures which could make sure the wetlands running steadily including interior structure optimization and external insulation.
Sewage Treatment Plant Reconstruction Project Design at Cold Area in the Northeast of China
Authors: Liu Ji Jia
Published: June 2014

Sewage treatment plant reconstruction project in cold area of China (the scale of processing is 20×104m3/d). The project have adopted advanced MBR process for both lacking space and improving effluent quality requirements .After secondary treatment, sewage flow through invasive hollow fiber membrane module to dewater, and then discharged the water after chlorination. Relatively, designed effluent quality is stable and achieve the primary standard of " comprehensively discharged standard of sewage in Liaoning province" (DB21/1627-2008). This paper introduced the technological process and main structure design parameters, the maintenance of membrane module as well as economic and environmental benefits analysis and so on of the sewage treatment plant.
Sustainable Wastewater Treatment Technologies Based on Resource Recovery and Energy Utilization
Authors: Zhang Zhao Han , Xiang Li Jun , Zou Qiu Yan , Feng Yu Jie , Zhan Pei Rong
Published: June 2014

In the context of global sustainable development, traditional wastewater treatment models reveal its shortcomings due to lack of recovering resource and energy in wastewater. Sustainable wastewater treatment technologies, taken wastewater as carriers of resource and energy, have been paid close attention. Starting from the existing problems of present wastewater treatment technology and focusing on the concept of resource recovery and energy utilization, this paper discussed the production technologies for hydrogen, electricity, diesel and methane from wastewater based on carbon resource recovery, and nitrogen resource treatment technologies with low energy consumption (such as shortcut nitrification-denitrification, ANAMMOX and SND). The latest research processes were also summarized. The research and development orientation of sustainable treatment technology for urban wastewater was put forward.
Toxic Effects of Phenol on OUR in Activated Sludge
Authors: He Li , Pan Hui
Published: June 2014

Toxic effects of phenol on the activated sludge process were evaluated by determining the changes in DO in a laboratory-scale unit. A series of phenol concentration significantly affected the activated sludge. The effect of phenol was variable depending on its concentration. With the increase of phenol concentration, oxygen uptake rate (OUR) decreased. The inhibitory concentration that reduced the sludges specific oxygen uptake 50% from its maximum rate was determined (IC50).
Influence of Microwave and Ultrasound on Sludge Dewaterability
Authors: Zhou Cui Hong , Ling Ying , Zeng Meng , Li Xin Yue
Published: June 2014

Sludge with large production is difficult to be dewatered without any pretreatment. Pretreatment with ultrasound and microwave can adjust the structure of sludge and change the water form, therefore increase the water content which could be dispelled easily. Dewaterability and morphological of sludge from sewage treatment plant including microwave and ultrasound were studied. Capillary Suction Time (CST), viscosity, Settle Volume (SV), water content, Chemical Oxygen Demand (COD), Zeta potential and morphological characteristics were tested. After microwave modification, the particle size of sludge ranged from 33.55μm to 28.98μm, and fractal dimension was about 2.8. Microscopic image analysis showed that the particle of sludge became coarse. After ultrasound modification, the particle size of sludge ranged from 33.55μm to 9.44μm, fractal dimension was about 2.9. Thus, the smaller particles were observed after ultrasound. The gray associate degree coefficient of viscosity and moisture content is the bigest. Through the analysis of dewatering characteristics of sludge and water content, a model which contributes to predict moisture content of sludge online was established.
Application of Inertial Effect in Activated Sludge Process
Authors: Liu Hong Mei , Zhu Gang , Zhao Ke , Liu Zhuang
Published: June 2014

The inertial effect applied to activated sludge process, the practice shows that in energy efficiency and reduce the hydraulic retention time it is obvious than not using the inertial effect. In cold winter areas to ensure water quality can meet the first grade A standard of "Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant" (GB18918-2002)
Material Characterization of Palm Oil Fuel Ash (POFA) Mixed with Granite Residual Soil
Authors: Nik Daud Nik Norsyahariati , Muhammed Abubakar Sadiq
Published: June 2014

The palm industry in Malaysia is a growing industry as from a mere 400 hectares planted in 1920, the hectarage increased to 5 million hectares in 2011 [1]. A by-product known as palm oil fuel ash (POFA) was a waste from the palm industry. Uncontrolled dumping of POFA give a serious impacts to environmental which creates pollution and health hazard. In this paper, the material characterization of POFA as an additive material to granite residual soil in terms of physical, mineralogical, chemical and mechanical properties has been investigated for the potential usage of the material. Results showed a general improvement of soil sample when mixed with POFA in all physical properties. The domain mineral present in natural soil is kaolinite. The mechanical behaviour also showed an improvement especially when compared to the landfill hydraulic barrier requirements.
Study on Ecological Restoration of Handan Iron Mining Area
Authors: Ma Xiu Feng
Published: June 2014

This article uses the field investigation and data collection methods, study of the status of the handan iron mining area ecological restoration. Through field survey, Studies the mine soil physical and chemical properties, biological diversity and the dominant species of space and time change. Using the method of data collection and analysis, by collecting data, studies the relationship between the ecological restoration of each factor, we may discover the laws of ecological restoration, to determine the steps and methods of ecological restoration of handan iron mining area.
The Ecological Restoration Technologies of Damaged Mountain Slope in Shandong Area
Authors: Li Cheng , Zhao Ru Zhen , Tian Yuan
Published: June 2014

Based on the analysis of field investigation, we divide damaged mountains of Shandong into three types and summarizes corresponding modes of ecological restoration and landscape construction respectively. The technologies of continuing and cutting down the slope of platform should be used for the earthy slope; the technologies of plant cultivation on plane and elevation, cutting down the slope of platform and building steps, suspending net spray-sowing, planting pot or groove should be used for the rocky slope; The technologies of continuing the slope of platform, cutting down the slope of platform and building steps combined with suspending net spray-sowing should be used for the crushed and discarded slope. The ecological landscape effect through fixed point observation is obvious.
Environmental Risk of Gas Hydrates Exploitation in Tibetan Plateau Permafrost
Authors: Zhao Rong , Chang Hua Jin , Chen Ke Long
Published: June 2014

Gas hydrate samples were collected in Muli area (Qinghai Province, China) of Tibetan Plateau permafrost, which is the first discovery of gas hydrate in Chinese permafrost and in the low to middle latitude permafrost of the world. Although the exploitation of gas hydrate in Tibetan Plateau permafrost has lots of important significance, environmental risks including permafrost and alpine meadow ecosystem degeneration, global climate influence, and environmental pollution would take place in the exploitation process. In order to avoid or decrease the risk, safe and dependable exploitation technique, carbon capture and storage technology, engineering process control, legislation and emergency preparatory scheme should be put into practice.