COMPLETION REPORT
Comparison on potential of application of clean technology for protecting environment between Japan andVietnam. Case study water hydraulics
Dr. Pham Ngoc Pha
Director
Center for Data Statistics and Patent Analysis
National Institute of Patent and Technology Explointation
A survey was conducted for analyzing the environmental situation in Vietnam. Especially, this research
focused more detail on water pollution Current status of continental surface water, groundwater and seawater
environment is given for analysis and determination of pollution levels. According to statistics, Vietnam has 3,450
rivers and streams with a length of 10 km or more. These rivers and streams are located in 108 river basins distributedand spread across the country with a total area of over 1,167 million km2. Total annual surface water volume ofVietnam is about 830 billion m3, mainly concentrated in 8 large river basins. Surface water quality development isevaluated on the basis of water quality of large river basins spreading from North to South. In general, the upstream
water quality of the river basin is relatively good. Pollution and water quality degradation are concentrated in themiddle and downstream areas (especially the section running through urban areas, industrial parks and craft villages),many places are seriously polluted, as in Nhue- Day river basin, Cau river basin, Dong Nai river basin. The problemof oil pollution usually occurs only in the river sections with developed water transport activities or river sections
receiving industrial wastewater from production facilities and port areas. Heavy metal pollution is concentrated
mainly in river branches near mineral mining areas or industrial production facilities. It is estimated that theunderground water reserve in Vietnam is about 172.6 million m3/day. Most of Vietnam’s underground water quality
is relatively good. Quality of coastal sea water in Vietnam is still quite good with most of the parameters typical forsea water quality within the allowable limits of Vietnam standard No.10-MT:2015/BTNMT. This study also pointed
out the causes of water pollution. They are domestic wastewater, industrial wastewater, natural wastewater and urbanwastewater.
Japan aims to develop Green economy through the promulgation and implementation of the new Growth Strategy
in December 2009. The content of this Policy includes: green investment, R&D, infrastructure, low carbon, tax tools,
labor market coordination with international education and cooperation policies. The development of green industry
is on of the key issues. Recently, Japan is one of the leading centers for developing hydraulic water technology toreplace traditional hydraulic technology using oil as pressure medium because of inherent merits of water hydraulics
such as environmental friendliness, hygiene, washability, high safety against fine hazard, lower running cost, andavailability of tap water. Owing to the outstanding advantages, water hydraulics, which uses pure tap water as thepressure medium has been applied in many fields, especially food, beverages, semiconductors, medicine processing,steel and glass production, ocean exploration, underwater robotics, nuclear power generation, underwater gaittraining orthosis, wave/wind power generation systems, mining machinery, ocean development machinery ,etc.
Following points should be considered for learning from Japanese experience for protecting environment inVietnam.:1. Vietnamese government should learn new Growth Strategy of Japan in December 2009 based on develop green
economy.
2. Vietnamese government should find the way to reduce water pollution through increased monitoring, enforcementof sanctions to reduce emissions to the environment and especially the use of new and advanced technologies toreduce public emissions.
3. Vietnamese government should step up the development of preferential policies, especially preferential tax, fee,and financial loans for the business sector to encourage enterprises to invest in technological innovation towards
green technology.
4. Vietnamese government should encourage environmentally friendly technology transfer from Japan.
5. Vietnam has the potential to apply water hydraulic technology to some areas such as especially food, beverages,steel and glass production.
Publication of the Results of Research Project:
Verbal Presentation (Date, Venue, Name of Conference, Title of Presentation, Presenter, etc.)
1. Pha N. Pham, Kazuhisa Ito, Ryo Yagisawa, Shigeru Ikeo, “Experimental Result for Energy-Saving
Technology in Water Hydraulic Motor System”. The 10th JFPS international Symposium on Fluid Power,Fukuoka Japan, October 24027, 2017.
2. Ryo Yagisawa, Kazuhisa Ito, Pha N. Pham, Shigeru Ikeo, Wataru Kobayashi “Energy Efficiency
Improvement of Water Hydrulic Motor System with Reducing Pump Supply Pressure”, The 10th JFPSInternational Symposium on Fluid Power, Fukuoka Japa, October 24-27,2017.
Thesis (Name of Journal and its Date, Title and Author of Thesis, etc.)
N/A

Book (Publisher and Date of the Book, Title and Author of the Book, etc.)
N/A