水環境国際招聘賞（いであ招聘賞）（JSWE-IDEA Water Environment International
Exchange Award）授賞に関して
本会では，水環境分野の国際交流・国際協力の促進を目的として，いであ株式会社からのご出捐により，水環境国際招聘賞と水環境国際活動賞を設けております。水環境国際招聘賞は本会年会で研究発表を行う海外在住外国人会員に対して，来日費用等の助成を行う制度です。COVID-19 の影響でオンライン開催となった第 56 回年会では，中国から 2 名，韓国から 1 名を招聘し，オンラインにて研究発表を行っていただきました。そこで，受賞者に研究内容や抱負等についてご執筆いただきましたのでご紹介します。なお，今年度の水環境国際招聘賞の募集案内は秋頃に本誌会告に掲載する予定です。
（水環境国際活動賞・招聘賞選考委員会）

JSWE-IDEA Water Environment International
Exchange Award
Professor, School of Environmental Science and Engineering,
Suzhou University of Science and Technology（苏州科技大学）

Tianyin Huang（黄天寅）

It’s a great honor to be invited to attend the 56thJSWE Annual Conference held online from March 16-18,
2022. I would like to give my gratitude to the Committee
on Overseas Member Invitation Program and Awards
Committee of Japan Society on Water Environment forawarding me the JSWE-IDEA Water Environment
International Exchange Award for the 56th JSWE
Annual Conference. Many thanks for all your attention
and support from the JSWE organizing committee.
I obtained my doctoral degree of Environmental
Engineering from Tongji University in 2004. Then, I
continued my post-doctoral in Southeast University,and applied for a visiting Fellowship at Chinese
University of Science and Technology and Georgia
Institute of Technology, then I worked at Suzhou
University of Science and Technology. I have been
engaged in wastewater treatment and reclamation for
more than 20 years. My research focused on wastewater control, advanced biological treatment, waterenvironment restoration, municipal engineering planning and design. I established the institute of water
environment and safety. There are seven full-timeteachers and about 50 postgraduate students in mygroup, and we are working on development of newtechnologies for wastewater treatment, ecologicalrestoration, rain and flood management. These developed techniques have been applied in many projects
including wastewater treatment and reclamation,
sponge city construction and municipal wastewater
treatment and reuse.
In the 56th Annual Conference of JSWE, I submitted
paperwork entitled “A new strategy for the spongecity construction of urban roads: Combines the traditional ability with landscape and drainage”． Urban
roads play a key role in sponge city construction.
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However, efficient methods to enhance their drainage
performance are still lacking. In the present research,
we proposed a new strategy for the urban road designand conducted a pilot study in Suzhou. The presentwork was conducted on Liangfeng Road in
Zhangjiagang, Suzhou, as a pilot project. Generally, by
considering the organization of the runoff and theconstruction of the drainage system（including spongecity （SC） facilities） as the core of the strategy, thedrainage and traffic functions were combined. The
strategy was based on the characteristics of urban
roads, took the organization of the runoff and theconstruction of drainage system （including SC facilities）as the core, made the road and green spaces for apart of the drainage system, constructed ribbon facilities to meet for various functions of the road. To
ensure the runoff rainwater can effectively enter theSC facilities with water storage capability, kerbs are
generally set between the pavement and the green
belts of urban roads. With the new strategy, the space
was optimized, the functions were enhanced and theenvironment was promoted after the reconstruction ofthis road. Therefore, combining the traditional basic
ability of the road with landscape and drainage function might be a promising strategy for the sponge city
construction of urban road.
The JSWE conference was a special event for
research dissemination, exchanging ideas, andexpanding the network. Again, I really appreciate tothis opportunity and very grateful to all those whohave supported me. I hope my participation in thisevent can advance Indonesia and Japan’s cooperation,
especially in the water and environment sector.
Finally, I am looking forward to contributing to future
conference activities.
水環境学会誌

Journal of Japan Society on Water Environment

JSWE-IDEA Water Environment International
Exchange Award
Professor, Department of Civil and Environmental Engineering
Sejong UniversitySung Kyu Maeng

To begin with, let me express my sincere gratitude
to the Japan Society on Water Environment（JSWE）
for the JSWE-IDEA International Exchange Award. I
am honored to receive this award at the 56th Annual
Conference of JSWE, which was online between March
16-18, 2022. I would like to extend my sincere appreciation to the JSWE organizing committee.
Let me introduce myself here for a moment. I went
to Rensselaer Polytechnic Institute, Troy, New York,U.S. for a Bachelor of Science in Environmental
Engineering and graduated in May 1995. To immerse
myself in wastewater treatment, I completed amaster’s degree at Georgia Institute of Technology,
Atlanta, Georgia, U.S.（Dec. 1997）where I studied thebiological treatment of wastewater from photo-film
development. After obtaining my master’s degree, I
worked as a researcher at Korea Institute of Scienceand Technology. As part of my pursuit of a lifelong
career in environmental engineering research, I
received my Ph.D. degree in 2010 after completing aPh.D. program at Technical University of Delft in theNetherlands.
Toward a better understanding of biological stability
in drinking water by treatment steps, I havesubmitted a review paper entitled “Understanding
biostability in drinking water by treatment steps: A
brief overview from source to tap”. Biostable drinking
water, which does not support bacterial growth andcommunity changes, is obtained by removing bacterial
growth-promoting nutrients, such as assimilable
organic carbon（AOC）, through a range of treatment

Vol. 45（A）  No. 6（2022）

processes. To date, various controlled laboratory bacterial growth tests have been developed using different
inoculum types to study the growth-promoting nutrients in water. However, many countries have notconsidered limiting bacterial growth by reducing thegrowth promoting nutrients in drinking water, because
they primarily use chlorine in their distribution
systems. This review provides an overview of theavailable methods to analyze dissolved growth-promoting nutrients in water and summarizes the current
knowledge on nutrients characteristics and concentrations in water from source to tap, through various
treatment processes. Bacterial growth-promoting nutrients in surface water are affected by seasonal variables, such as water temperature, precipitation, andalgal blooms. The use of groundwater, bank filtration,
and artificial recharge of water sources provide low
bacterial growth-promoting nutrients concentrations indrinking water. The treatment type as well as operational conditions significantly affect biostable drinking
water production. To achieve water biostability, it isimportant to understand not only the water treatment
process but also the distribution conditions, including
the impact of pipe materials on the nutrient levels inwater. The impact of climate change on biostability as
well as the role of complex and particle bound nutrients on microbial growth in drinking water distribution systems should be investigated in future studies.
As a final comment, I would like to see Japan Society
on Water Environment and Korean Society ofEnvironmental Engineers continue their collaboration.

199

JSWE-IDEA Water Environment International
Exchange Award
Associate Professor, School of Environment
Beijing Normal University（北京師範大学）

Yu Yang（楊禹）It is a great honor to be awarded the JSWE-IDEA
water environment international exchange award forthe 56th JSWE Annual Conference. I am very gratefulto the Japan Society on Water Environment forproviding a platform for international exchange during
the epidemic.
I obtained doctor’s degree from the University ofTokyo in 2012, and working in the Beijing NormalUniversity. My main research area are the researchand development of drinking water treatment technologies, the application of membrane combination technology in water treatment, membrane fouling control
and nanomaterial modified membrane preparation. I
have hosted and participated in the National Natural
Science Foundation of China, the National Water
Pollution Control and Treatment Science andTechnology Major Project, the Beijing Municipal
Natural Science Foundation, Research Fund for theDoctoral Program of Higher Education of China. These
research projects supported us to develop high-efficiency adsorption membranes for heavy metals andradionuclides, and the construction of anti-fouling modified membrane materials and treatment technologies.
At this conference, we presented our recent research
entitled “Effect of Pseudomonas quinolone signal inhibitors-mediated quorum quenching on membrane
biofouling control”. As we know, membrane biofoulingis an inevitable problem affecting membrane filtration
performance, causing membrane flux reduction, operational costs increase, and permeate quantity variation.
Hence, our study innovatively investigated the intrinsic
link between the expression of quorum sensing（QS）

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-related genes and biofouling mitigation induced by
Pseudomonas quinolone signal（PQS）inhibitor methyl
anthranilate （MA）， to clarify the mechanism andpathway of QS regulating biofouling. We clarified that
MA interfered with bacterial communication by firstsuppressing the expression of pqsA that initiates PQS
biosynthesis, then downregulating pqsBCDE, rhlA andlasI, and finally inhibiting transcriptional regulatory
genes pqsR and lasR.MA-driven QQ led to the disruption of biofilm development and alleviation of membrane
biofouling, where the reduction of extracellular polymeric substances（EPS）on membrane surface was in
the stages of microbial proliferation and biofilm detachment during biofouling. Protein, polysaccharide andeDNA were reduced by 52%， 59% and 41%， respectively, and biofilm thickness was mitigated by 69%.
Thus, membrane flux and membrane biofouling weresignificantly alleviated. Furthermore, a novel anti-biofouling membrane was fabricated through phase inversion by incorporating with GO/MA nanocomposite intoPVDF to improve membrane in situ biofouling resistance. The maximum reduction rates for EPS and total
cell fluorescence reached 83% and 68%，respectively. It
exhibited higher water permeability and organic retention capacity than virgin PVDF membrane.
The epidemic has caused a lot of inconvenience tointernational exchanges. Once again, I would like tothank the Japan Society on Water Environment for its
contribution in international exchanges and hope tomaintain long-term cooperation and exchanges in thefuture.

水環境学会誌

Journal of Japan Society on Water Environment