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Ph.D. in Civil Engineering, July 2005, Tsinghua University, Beijing, China

M.S. in Environmental Engineering, March 2002, Shandong University, Jinan, China

B.S. in Environmental Engineering, July 1999, Shandong University, Jinan, China

2010-present Associate Professor, School of Environment, Tsinghua University, China

2019.2-6 Visiting Professor, Venice International University, Italy

2017-2018 Director of Research Center for Environmental Risk & Emergency, Research Institute for Environmental Innovation (Suzhou), Tsinghua

2017-present PI for emergency drinking water treatment group, Research Institute for Environmental Innovation (Suzhou), Tsinghua

2012-2013 Visiting Scholar, Department of Environmental Health Sciences, School of Public Health, University of California at Los Angeles, CA, USA

2007-2010 Faculty, Department of Environmental Science and Engineering, Tsinghua University

2005-2007 Postdoctoral Associate, Department of Environmental Science and Engineering, Tsinghua University

Concurrent Academic

Member, International Water Association (IWA), since 2004

Strategic Council member, IWA, since 2015

Secretary, Specialist Group of Disinfection, IWA, since 2015

Management Committee member, Specialist Group of Disinfection, IWA, 2005-2015

Management Committee member, Specialist Group of Off-flavor, IWA, since 2011

Young Water Professional committee member, IWA, 2006 - 2008

Young Water Professional committee advisor, IWA, 2008 – 2010

Member, American Chemistry Society (ACS), since 2011

Member, American Water Works Association (AWWA), since 2014

Council Member of Chinese Young Water Professional committee, since 2012

Board Member of Chinese Research Association of Drinking Water Advanced Treatment, since 2013

Senior Member of Chinese Society for Environmental Sciences, since 2014

Member of Chinese Society for Microbiology, since 2005

Responsible Editor, Frontier of Environmental Science and Engineering, 2010-2013

Editorial board, China Environmental Information Journal, since 2008

Social service

Member, International Water Association (IWA), since 2004

Strategic Council member, IWA, since 2015

Secretary, Specialist Group of Disinfection, IWA, 2015-2018

Chairman, Specialist Group of Disinfection, IWA, since 2018

Management Committee member, Specialist Group of Disinfection, IWA, 2005-2015

Management Committee member, Specialist Group of Off-flavor, IWA, since 2011

Young Water Professional committee member, IWA, 2006 - 2008

Young Water Professional committee advisor, IWA, 2008 – 2010

Member, American Chemistry Society (ACS), since 2011

Member, American Water Works Association (AWWA), since 2014

Council Member of Chinese Young Water Professional committee, since 2012

Board Member of Chinese Research Association of Drinking Water Advanced Treatment, since 2013

Senior Member of Chinese Society for Environmental Sciences, since 2014

Member of Chinese Society for Microbiology, since 2005

Responsible Editor, Frontier of Environmental Science and Engineering, 2010-2013

1. Risk identification and control of emerging contaminants in drinking water

2. Water quality stability and monitoring technology of drinking water distribution system

3. Emergency response and management of environmental incidents

The water supply in China is still facing some severe challenges. Among these challenges, the high concentration of disinfection by-products (DBPs) in tap water and the frequent chemical spill accidents in source water are quite prominent. Dr Chen focuses his work on the chemical risk control of drinking water quality, especially on DBP control, the emergency response to echo the national demands for safe water and the frontier of international academia.

During the past two decades, the following accomplishments have been obtained:

(1) Development of DBP precursor analysis and control technology for emerging disinfection by-products, especially on nitrosamines.

The major precursors of DBPs in China, including trihalomethanes (THMs), haloacetic acids (HAAs) (Sci. Tot. Environ., 2008), and nitrosamines (Water Res., 2015), have been identified. It was found that there is fairly high risk of nitrosamines, one emerging DBPs in the drinking water in China (Water Res., 2016), which has attracted much attention in China. The nitrosamine precursor analysis based on the Polar Rapid Analysis Method (PRAM) was developed (Water Res., 2014), which revealed the basic structure of nitrosamine precursors of both positively charge and non-polarity. Based on the results of precursor analysis, it was determined that ozone-granular or biological activated carbon is the best available technology at the present stage, which can simultaneously control THMs, HAAs and nitrosamines (Sci. Tot. Environ., 2007, 2013; J. AWWA, 2014; 2015; 2017). Based on PRAM tool, the mechanism of DBP precursor removal by different processes was revealed (Water Res., 2015). The process and mechanism of nitrosamine precursors by biodegradation was also investigated (Chemosphere, 2015). The sequential chlorination process was developed to achieve the simultaneous control of microorganism as well as DBPs such as THMs, HAAs and nitrosamines (Biomed. & Environ. Sci., 2006, 2007; J. AWWA, 2017; Sep. & Purif. Tech., 2018). The nitrosamine precursor treatment and concentration tool for analysis based on cation exchange technology were developed (J. Env. Sci., 2017). The black and odorous water was found to be an important source of nitrosamine precursors (Chemosphere, 2016). These achievements are very helpful to address the concern of DBPs (Accounts Chem. Res., 2019).

(2) Established the emergency water treatment technologies to address the chemical spill accidents in water source.

Dr Chen established the comprehensive technologies for urban water supply emergency treatment with the cooperation with Professor Xiaojian Zhang. Six key technologies including activated carbon adsorption, chemical precipitation, oxidation/reduction, enhanced disinfection, aeration stripping and algae treatment were developed which can cover almost all regulated drinking water contaminants (Environ. Sci. & Technol., 2011; Accounts Chem. Res., 2019). They obtained the adsorption characteristics of activated carbon (AC) for over sixty organic pollutants; developed the chemical precipitation technology to deal with heavy metals; developed the aeration stripping technology for the volatile pollutants; set up the models to predict the removal of organic matter by AC adsorption and aeration stripping performance of (SAR & QSAR in Environ. Res. 2015; J. Environ. Sci., 2016). They also developed some key equipment such as the pilot water treatment plant and the mobile emergency reagent addition system. The release mechanism of thiol sulfide odorous substances in the process of algae death was studied, which provided important clues for determining cause of the water crisis in Taihu Lake (J. Hat. Mat., 2010). Major breakthrough was obtained in the comprehensiveness of emergency treatment technology, the coverage of contaminants, the rapid and high-efficient application and stability of process implementation. Dr Chen has devoted himself in the emergency response work in several important accidents, including the Songhua River nitrobenzene pollution in 2005, the Taihu Lake Water Crisis in Wuxi city in 2007, the 2008 Wenchuan Earthquake, the Longjiang River cadmium pollution in 2012, the benzene contamination in Lanzhou city in 2014, the Tianjin Port explosion accident in 2015, and etc. He has served as a member of expert team for the Ministry of Housing and Urban-Rural Construction or the Ministry of Environmental Protection for several times to help address the accidents.

(3) Development of on-line monitoring system of pipe corrosion and scaling based on electrochemical signals and the control measures to promote water chemical stability

The research work on water quality problems of distribution systems has been carried out about 10 cities. The on-line monitoring technology of pipe corrosion and scaling based on the electrochemical signals has been developed for the first time (Water Research, 2020). The mechanism of pipe scaling breaking and iron release due to corrosive anions such as sulphate and chloride has been investigated by this technology. The measures including pH adjustment, alkalinity elevation and ORP elevation have been developed to promote water chemical stability (Frontier in Environmental Science and Engineering, 2014). These measures have been applied in several cities in China such as Beijing, Tianjin, Hangzhou, which helped cease the yellow water problem in these cities due to source water switch.

PROJECTS

1. Hypothesis verification on nitrosamine precursor formation from microorganism metabolism in aquatic environment. National Science Foundation Committee, China, 2018-2021. PI

2. Development and application of polarity rapid assessment method for nitrosamine precursor characterization. National Science Foundation Committee, China, 2015-2018. PI

3. Research on the short-term exposure of drinking contaminants due to chemical spill accidents and the emergency response technologies, China National Grand Special Program for Water Pollution Control, 2015-2016. Co-PI

4. Emergency drinking water treatment technology and process: research and demonstration, China National Grand Special Program for Water Pollution Control, 2008-2012. PI

5. Drinking water treatment for high-algae-laden source water in Lake Taihu, Ministry of Science and Technology, China, 2008-2012. PI

6. Inactivation of Microorganism in complex niche in drinking water system, National Science Foundation Committee, China, 2008-2010. PI

7. Precursor of Emerging Disinfection By-products: Characterization and Control Technologies. Tsinghua University Initiative Scientific Research Program. 2014-2016. PI

8. Nitrosamine as the disinfection by-products in drinking water: precursor identification and treatment process, National Science Foundation Committee, China, 2010-2012. Co-PI

9. Emergency drinking water treatment technology, Ministry of House and Urban-rural Construction, China, 2006-2008. Co-PI

10. Controlling the formation of nitrosamines during water treatment. Water Research Foundation 4370. USA. 2012-2014. Investigator.

11. Drinking water source and water environment in Wenchuan Earthquake hit area: assessment and measures, Ministry of Environmental Protection, China, 2008-2009. Investigator

12. Drinking water treatment for micro-polluted source water: research and development of instrument, Ministry of Science and Technology, China, 2007-2009. Investigator

13. Drinking water stability in distribution system: research and development, Ministry of Science and Technology, China, 2007-2009. Investigator

Tsinghua University

1. Field trip of water treatment engineering (core course for undergraduates, since 2011)

2. Design of water treatment facility (core course for undergraduates, since 2011)

3. Introduction to environmental and earth sciences (core course for undergraduates, since 2017)

4. Advanced water treatment engineering (core course for postgraduates, since 2006)

5. Emergency response treatment and management for environmental accidents (selective course for graduates, since 2015)

Venice International University, Italy

1. Introduction to Environmental Engineering (Globalization Program S1929)

2. Environmental Risk and Emergency Response (Globalization Program S1930)

2018 Award of National Science and Technology Advances (2nd Class), 6th investigator, issued by the Central Government of the People’s Republic of China

2015 Award of Environmental Science and Technology, China (1nd Class), 10th investigator, issued by Ministry of House and Urban-Rural Construction, China

2015 Award of Science and Technology Progress, Shandong province, China (2nd Class), 4th investigator, issued by Ministry of House and Urban-Rural Construction, China

2014 Award of Science and Technology Progress on Construction, China (3rd Class), 2nd investigator, issued by Ministry of House and Urban-Rural Construction, China

2010 Award of Young Scientist of China Environment Society

2009 Award of Science and Technology Progress on Construction, China (2nd Class), 3rd investigator, issued by Ministry of House and Urban-Rural Construction, China

2009 Honor of Excellent Postdoctoral in Tsinghua University (Top 10)

2008 Honor of National Labor Day Team, member, issued by All China Federation of Trade Unions

2008 Honor of Beijing’s Labor Day Team, member, issued by Beijing Federation of Trade Unions

2007 Award of Science and Technology Progress of Tianjin (2nd Class)

2002 Award of Science and Technology Progress of Shandong Province, China (1st Class), 6th investigator

BOOKS

1. Chen Chao, Andrews Susan, Xie Yuefeng Ed. Disinfection By-Products in Water. Springer Press. 2024. ISBN 978-3-031-74259-0 (in English)

2. Chen Chao, Zamyadi Arash, Lin Tsair-Fuh and Gallagher Daniel. Chapter 6. Removal of odourants from drinking water. In Lin Tsair-Fuh, Watson Susan, Dietrich Andrea M., Suffet I.H. (Mel) ed. Taste and Odour in Source and Drinking Water: Causes, Controls, and Consequences. IWA publishing. London, UK. 2019 (in English)

3. Zhang Xiaojian, Chen Chao. Chapter 9. Emergency treatment technologies. In Qie Yanqiu, Zhang Jinsong Ed. Design for Drinking Water Treatment Plants. 2017. China Architecture and Building Press, Beijing, 2017. (In Chinese)

4. Zhang Yue, Zhang Xiaojian, Chen Chao, Dong Hong, Guidelines for emergency drinking water treatment (2nd Edition), China Architecture and Building Press, Beijing, 2017. (In Chinese)

5. Chen Chao, Zhang Xiaojian, Chapter 11 Treatment technologies and processes for contaminated source water. In Lu Wenqing in chief. Water pollution and health. Wuhan, Hubei Science and Technology Press, Wuhan, 2017. (In Chinese)

6. Chen Chao^*, Hanigan David, Liao Xiaobin, Wang Jun, Zhang Xiaojian, Suffet I. H. (Mel), Krasner Stuart W., Westerhoff Paul. pH Effect on Nitrosamine Precursors Removal by Activated Carbon Adsorption. In Kranfil Tanju, Westerhoff Paul, Mitch William and Xie Yuefeng, eds. ACS DBP symposium book. 2015. (In English)

7. Zhang Xiaojian, Chen Chao, Chapter 2 Protection of aquatic environment and drinking water safety in the affected area. In Chen Jining in chief. Environmental safety assessment of Wenchuan Earthquake: methods and practices, China Environmental Sciences Press, Beijing, 2012. (In Chinese)

8. Zhang Xiaojian, Lin Pengfei, Chen Chao, et al. Arsenic emergency treatment and disposal. China Environmental Sciences Press, Beijing, 2010. (In Chinese)

9. Zhang Yue, Zhang Xiaojian, Chen Chao, Wang Huan and Zhang Suxia, Guidelines for emergency drinking water treatment, China Architecture and Building Press, Beijing, 2009. (In Chinese)

10. Zhang Xiaojian, Chen Chao, Chapter 9 Disinfection, In He Wenjie, Li Weiguang, Zhang Xiaojian, Huang Tinglin and Han Hongda, Technology for Safe Drinking Water, China Architecture and Building Press, Beijing, 2006. (In Chinese)

PUBLICATIONS IN SCI JOURNALS

1. Wang Y., Zhang Z.C., Yin Z.H., Wang J., Zhang X.J., Chen C.^* Adsorption of typical NDMA precursors by superfine powdered activated carbon: Critical role of particle size reduction. Journal of Environmental Sciences, 2025, 147, 101-113.

2. Zhao J.L., Guo C.S., Yang Q.P., Liu W.L., Zhang H., Luo Y., Zhang Y., Wang L., Chen C., Xu J.^* Comprehensive monitoring and prioritizing for contaminants of emerging concern in the Upper Yangtze River, China: An integrated approach. Journal of Hazardous Materials. 2024, 480:135835

3. Chen J.F., Lin Y.Y., Zhu Y., Zhang Y.R., Qian Q.R., Chen C.^*, Xie S.G.^* Spatiotemporal profiles and underlying mechanisms of the antibiotic resistome in two water-diversion lakes. Environmental Research. 2024, 263:120051.

4. Shi Y.J., Xia W., Liu H.X., Liu J.T., Cao S.T., Fang X.J., Li S.L., Li Y.Y., Chen C.^*, Xu S.Q^*. Trihalomethanes in global drinking water: Distributions, risk assessments, and attributable disease burden of bladder cancer. Journal of Hazardous Materials. 2024. 469(16):133760

5. Gao M.L., Liao X.B., Chen S.T., Li X.Y., Zhang Y.R., Chen C., Qi H^*. Unveiling Distinct Influencing Mechanisms of Br- on NDMA Formation During Ozonation of Actual Water Matrixes: Identification of Precursors and Brominated Substance. Chemical Engineering Journal. 2024. 10.1016/j.cej.2024.151760

6. Wen J.Q., Duan L., Wang B., Dong Q., Liu Y.C., Chen C., Huang J., Yu G^*. In-sewer Stability Assessment of 140 Pharmaceuticals, Personal Care Products, Pesticides and Their Metabolites: Implications for Wastewater-Based Epidemiology Biomarker Screening. Environmental International. 2024. 184:108465

7. Xie Y.X., Wang J., Tang Y.Q., Zhu Y., Tian Z.H., Chow A.T., Chen C.^*. Principle and Application of Algae Concentration Prediction Models in Lakes and Reservoirs. Progress in Chemistry. 2024，36(9): 1412~1424

8. Liu S.Q., Zhang Z.C., Liu R., Mao Y.K., Ge H.R., Liu C., Tian C.X., Yin S.Y., Li F., Chen C., Zhang L.Q. O₂ plasma-modified carbon nanotube for sulfamethoxazole degradation via peroxymonosulfate activation: Synergism of radical and non-radical pathways boosting water decontamination and detoxification. Chemosphere, 2024, 344(5):140214

9. Li X., Ye Z.W., Wang J., Lin P.F., Zhang X.J., Xie S.G., Chen C.^* Intake of tobacco nitrosamines of smokers in various provinces of China and their cancer risk: A meta-analysis. Journal of Environmental Sciences. 2024. 141, 249-260. DOI: 10.1016/j.jes.2023.05.018

10. Zhang H.Y., Dong D., Chen S.C., Liao J., Liu D.B., Zhang X.J., Zhao L.T., Wang J., Liu S., Chen C.^* Study on a new index for yellow water problem during source water switch and its application on one real project. Journal of Cleaner Production. 2023. 435(7):140419

11. Cao M.R., Ye Z.W., Wang J., Zhang X.J., Lin P.F., Chen C. ^* Occurrence of N-nitrosamines as Harmful Impurities in Pharmaceuticals. Progress in Chemistry. 2023, 35, 12:1881-1894.

12. Bei E., Ye Z.W., Chen X.L., Li X., Wang J., Qiu Y., Xie S.G.^?, Chen C^*. Study on characteristic and mechanism involved in the formation of N-nitrosodimethylamine precursors during microbial metabolism of amino acids. Science of the Total Environment. 2023, 874, 162469.

13. Luo Q., Miao Y., Liu C., Bei E., Zhang J. F., Zhang L. H., Chen C., Zeng Q. Maternal exposure to nitrosamines in drinking water during pregnancy and birth outcomes in a Chinese cohort. Chemosphere. 2023, 315, 9

14. Zhao L.T., Liu D.B., Zhang H.Y., Wang J., Zhang X.J., Liu S.M., Chen C^*. Study on electrochemical reduction mechanisms of iron oxides in pipe scale in drinking water distribution system. Water Research. 2023, 231, 119597.

15. Chen, X.L.; Ke, Y.C.; Zhu, Y.; Xu, M.B.; Chen, C.; Xie, S.G.^* Enrichment of tetracycline-degrading bacterial consortia: Microbial community succession and degradation characteristics and mechanism. Journal of Hazardous Materials. 2023, 448,130984.

16. Xia R., Liao X.B.^*, Liu T.Z., Gao M.L. Chen C.^* Effects of Br^? on NDMA Formation During Chloramination: a Review of Influencing Factors, Mechanisms, and Control. Chem. Res. Chinese Universities. 2023, 39, 3: 370-377. https://doi.org/10.1007/s40242-023-3048-7

17. Zhang H.Y., Liu D.B., Zhao L.T., Wang J. Xie S.G., Liu S.M., Lin P.F., Zhang X.J., Chen C.^* Review on corrosion and corrosion scale formation upon unlined cast iron pipes in drinking water distribution systems. Journal of Environmental Sciences. 2022, 117: 173-189.

18. Prasse C., Yang X., Chen C., Xu B., Li X.F. Re-Imagining drinking water safety based on 21st century science: Microbial pathogens, emerging contaminants, by-products, and health risks. Journal of Environmental Sciences. 2022, 117: 1-2.

19. Gao M.L., Jiang Z.B., Liao X.B.^?, Qi H., Zhao L., Chen C.^?, Westerman D. NDMA formation during ozonation of DMAPA: Influencing factors, mechanisms, and new pathway exploration. Science of the Total Environment. 2022, 825: 153881.

20. Chen X.L., Yang Y.J., Ke Y.C., Chen C., Xie S.G^*. A comprehensive review on biodegradation of tetracyclines: Current research progress and prospect. Science of the Total Environment. 2022, 814

21. Chen J.F., Yang Y.J., Ke Y.C., Chen X.L., Jiang X.S., Chen C., Xie S.G^*. Sulfonamide-metabolizing microorganisms and mechanisms in antibiotic-contaminated wetland sediments revealed by stable isotope probing and metagenomics. Environment International. 2022, 165.

22. Chen J.F., Yang Y.J., Ke Y.C., Chen X.L., Jiang X.S., Chen C., Xie S.G^*. Anaerobic sulfamethoxazole-degrading bacterial consortia in antibiotic-contaminated wetland sediments identified by DNA-stable isotope probing and metagenomics analysis. Environmental Microbiology. 2022, 24, 8: 3751-3763.

23. Chen X.L., Shen W., Chen J.F., Zhu Y., Chen C., Xie S.G.^* Tetracycline biotransformation by a novel bacterial strain Alcaligenes sp. T17. Science of the Total Environment. 2022, 832: 155130.

24. Liao X.B., Shen L.L, Jiang Z.B., Qiu Y., Qi H.^*, Chen C.^*, Li F., Yuan B.L. NDMA formation during ozonation of metformin: Roles of ozone and hydroxyl radicals. Science of The Total Environment. 2021, 796(3):149010.

25. Li X., Bei E., Qiu Y., Xiao H., Wang J., Lin P.F., Zhang X.J., Chen C^*. Intake of Volatile Nitrosamines by Chinese Residents in Different Provinces via Food and Drinking Water. Science of the Total Environment. 2021, 754: 142121.

26. Qiu Y., Bei E., Li X., Xie S.G., Xiao H., Luo Y.H., Wang Y., Wang J., Zhang X.J., Chen C.^* Quantitative analysis of source and fate of N-nitrosamines and their precursors in an urban water system in East China. Journal of Hazardous Materials. 2021, 415, 125700.

27. Zhang, J.X.^#, Maqbool, T.^#, Qiu, Y.^#, Qin Y.L., Asif M. B., Chen, C., Zhang, Z.H.^* Determining the leading sources of N-nitrosamines and dissolved organic matter in four reservoirs in Southern China. Science of the Total Environment. 2021, 771: 145409.

28. Hu Y.; Dong D.; Wan K.; Chen C.; Yu X.; Lin H.R. Potential shift of bacterial community structure and corrosion-related bacteria in drinking water distribution pipeline driven by water source switching. Frontiers of Environmental Science & Engineering. 2021, 15, 2.

29. Chen C., Hayward K., Khan S.J., Ormeci B., Pillay S., Rose J.B, Thanikal J.V., Zhang T. Role of wastewater treatment in COVID-19 control. Water Quality Research Journal of Canada. 2021, 56 (2): 68–82.

30. Zhang H.Y., Zhao L.T., Liu D.B., Wang J., Zhang X.J., Chen C.^* Early period corrosion and scaling characteristics of ductile iron pipe for ground water supply with sodium hypochlorite disinfection. Water Research, 2020, 176: 115742.

31. Zhang H.Y., Liu D.B., Zhao L.T., Zhang X.J., Wang J., Chen C.^* Corrosion mechanisms of ductile iron pipes in water distribution system: impacts of ionic strength and cement mortar lining coverage. Desalination and Water Treatment. 2020, 197:237-248.

32. Bei E., Li X., Wu F.H, Li S.X., He X.S., Wang Y.F., Qiu Y., Wang Y., Wang C.K., Wang J., Zhang X.J., Chen C.^* Formation of N-nitrosodimethylamine precursors through the microbiological metabolism of nitrogenous substrates in water. Water Research, 2020, 183: 116055.

33. Luo Q.^#, Bei E.^#, Liu C., Deng Y.L., Miao Y., Qiu Y., Lu W.Q., Chen C.^*, Zeng Q^*. Spatial, temporal variability and carcinogenic health risk assessment of nitrosamines in a drinking water system in China. Science of the Total Environment. 2020, 736: 139695

34. Shi L., Hu Z.H., Wang Y., Bei E., Lens P.N.L., Thomas O., Hu Y.S., Chen C., Zhan X.M. In situ electrochemical oxidation in electrodialysis for antibiotics removal during nutrient recovery from pig manure digestate. Chemical Engineering Journal. 2020, 127485.

35. Qiu Y., Bei E., Wang Y.F., Wang J., Zhang X.J., Chen C.^* One representative water supply system in China with nitrosamine concern: Challenges and treatment strategies. Journal of Environmental Sciences. 2020, 88: 12-20.

36. Lu ZD, Sun W.J., Li C., Cao W.F., Jing Z.B., Li S.M., Ao X.W., Chen C., Liu S.M. Effect of granular activated carbon pore-size distribution on biological activated carbon filter performance. Water Research. 2020, 177: 115768.

37. Qiu Y., Bei E., Li S.X., Wang J., Zhang X.J., Chen C.^*, Xie S.G., Krasner S.W. Contributions of volatilization, photolysis, and biodegradation to N-nitrosodimethylamine removal in conventional drinking water treatment plants. Science of the Total Environment. 2019, 697, 133993.

38. Liao, X. B.; Zhao, L.; Shen, L. L.; Chen, M. Y.; Chen, C.; Li, F.; Yuan, B. L.; Zhang, X. J. Effect of pre-ozonation on N-nitrosodimethylamine (NDMA) formation from four drinking-water sources during subsequent chloramination. Water Science and Technology-Water Supply. 2019, 19, 6:1816-1822.

39. Liao X.B., Cheng Y.S., Liu Z.H., Shen L.L., Zhao L., Chen C., Li F., Zhang X.J. Performance of BAC for DBPs precursors' removal for one year with micro-polluted lake water in East-China. Environmental Technology. 2019. 41,27: 3554-3561.

40. Bei E., Wu X.M., Qiu Y., Chen C.^*, Zhang X.J. A tale of two water supplies in China: finding practical solutions to urban and rural water supply problems. Accounts of Chemical Research. 2019. 52, 4: 867-875. https://pubs.acs.org/doi/full/10.1021/acs.accounts.8b00605

41. Zhang H.Y., Tian Y.M., Kang M.X., Chen C., Song Y.R., Li. H. Effects of chlorination/chlorine dioxide disinfection on biofilm bacterial community and corrosion process in a reclaimed water distribution system. Chemosphere, 2019, 215, 62-73.

42. Wang Y.X., Liu C., Chen Y.J., Duan P., Wang Q., Chen C., Sun Y., Huang L.L., Wang L., Chen C., Li J., Ai S.H., Huang Z., Sun L., Wan Z.Z., Pan A., Meng T.Q. Lu W.Q. Profiles, variability and predictors of concentrations of blood trihalomethanes and urinary haloacetic acids along pregnancy among 1760 Chinese women. Environmental Research. 2019, 172: 665-674.

43. Chen, J.F; Li, N.N; Xie, S,G.; Chen C. Biofilm and planktonic bacterial communities in a drinking water distribution system supplied with untreated groundwater. Archives of Microbiology. 2018, 200, 9: 1323-1331.

44. Li S.X., Shu Y.Y., Tang X., Lin P.F., Wang J., Zhang X.J., Chen C^*. Reaction patterns of NDMA precursors during the sequential chlorination process of short-term free chlorination and monochloramination. Separation and Purification Technology. 2018, 204: 196–204.

45. Liao, X.B.; Zou, R.; Chen, C.; et al.Evaluating the biosafety of conventional and O₃-BAC process and its relationship with NOM characteristics. Environmental Technology. 2018, 39, 2: 221-230.

46. Li S.X., Zhang X.L., Bei E., Yue H.H., Lin P.F., Wang J., Zhang X.J., Chen C.^*. Capability of cation exchange technology to remove proven N-nitrosodimethylamine precursors. Journal of Environmental Sciences. 2017. 58, 331-339. https://doi.org/10.1016/j.jes.2017.04.007

47. Liao X.B., Chen C.^*, Yuan B.L.^*, Wang J., Zhang X.J. Control of Nitrosamines, THMs, and HAAs in Heavily Impacted Water With O₃-BAC. Journal of American Water Works Association. 2017, 109, 6: E3-13. https://doi.org/10.5942/jawwa.2017.109.0057

48. Fu H., Li X.B., Wang J., Lin P.F., Chen C.^*, Zhang X.J., Suffet I.H.M. Activated carbon adsorption of quinolone antibiotics in water: Performance, mechanism, and modeling. Journal of Environmental Sciences. 2017, 56: 145-152.

49. Yao W.K., Qu Q.Y., von Gunten U., Chen C., Yu G., Wang Y.J. Comparison of methylisoborneol and geosmin abatement in surface water by conventional ozonation and an electro-peroxone process. Water Research. 2017, 108: 373-382.

50. Bei E., Liao X.B., Meng X.T., Li S.X., Wang J., Sheng D.Y., Chao M., Chen Z.H., Zhang X.J., Chen C.^*. Identification of nitrosamine precursors from urban drainage during storm events: A case study in southern China. Chemosphere. 2016, 160, 323-331.

51. Liao, XB; Zou, RS; Chen, C; Yuan, BL; Zhou, ZM; Ma, HF; Zhang, XJ. Biomass development in GAC columns receiving influents with different levels of nutrients. Water Science and Technology-Water Supply. 2016. 16, 4: 1024-1032. DOI: 10.2166/ws.2016.016

52. Bei E., Shu Y.Y., Li S.X., Wang J., Zhang X.J., Chen C.^*, Krasner S.W. Occurrence of nitrosamines and their precursors in drinking water systems around mainland China. Water Research. 2016, 98: 168-175.

53. Mi Z.L., Zhang X.J., Chen C.^* Iron release in drinking water distribution systems by feeding desalinated seawater: characteristics and control. Desalination and Water Treatment. 2016, 57: 9728–9735. DOI: 10.1080/19443994.2015.1031706

54. Ding H., Li X., Wang J., Zhang X.J., Chen C.^* Adsorption of chlorophenols from aqueous solutions by pristine and surface functionalized single-walled carbon nanotubes. Journal of Environmental Sciences. 2016, 43: 187-198. 封面文章，获得JES 2019 Outstanding Publication Award

55. Li X., Lin P.F., Wang J., Liu Y.Y., Li Y., Zhang X.J., Chen C.^*. Treatment technologies and mechanisms for three odorants at trace level: IPMP, IBMP, and TCA. Environmental Technology. 2016, 37, 3: 308–315, http://dx.doi.org/10.1080/09593330.2015.1069405

56. Ding H., Chen C^*., Zhang X. Linear solvation energy relationship for the adsorption of synthetic organic compounds on single-walled carbon nanotubes in water. SAR and QSAR in Environmental Research. 2016, 27, 1: 31-45.

57. Ding H., Shen X., Chen C.^*, Zhang X.J. Molecular dynamics simulations of simple aromatic compounds adsorption on single-walled carbon nanotubes. RSC Advances, 2016, DOI: 10.1039/C6RA12644H

58. Liao X.B., Bei E., Li S.X., Ouyang Y.Y., Wang J., Chen C.^*, Zhang X.J., Krasner S.W. and Suffet M. Applying the Polarity Rapid Assessment Method to Characterize Nitrosamine Precursors and to Understand Their Removal by Drinking Water Treatment Processes. Water Research. 2015, 87: 292-298

59. Wang C.K., Liu S.M., Wang J., Zhang X.J., Chen C.^* Monthly survey of N-nitrosamines yield in a conventional water treatment plant in North China. Journal of Environmental Sciences. 2015, 38: 142-149. DOI: http://dx.doi.org/10.1016/j.jes.2015.05.025.

60. Mi Z.L., Dai Y., Xie S.G., Chen C., Zhang X.J. Impact of disinfection on drinking water biofilm bacterial community. Journal of Environmental Sciences. 2015, 37: 200-205.

61. Liao X.B., Chen C.^*, Xie S.G., Hanigan D., Wang J., Zhang X.J., Westerhoff P., Krasner S.W. Nitrosamine Precursor Removal by BAC: Adsorption versus Biotreatment Case Study. Journal of American Water Works Association. 2015, 107, 9: E454-463. DOI: 10.5942/jawwa.2015.107.0123

62. Li X., Wang J., Zhang X.J., Chen C.^*, Xie Y.F., Suffet I.H.M. Powdered activated carbon adsorption of two fishy odorants in water: trans,trans-2,4-heptadienal and trans,trans-2,4-decadienal. Journal of Environmental Sciences. 2015, 32, 15-25. DOI:10.1016/j.jes.2015.01.001.

63. Liao X.B.^#, Chen C.^#, Wang Z., Chang C.H., Zhang X.J., Xie S.G.^* Bacterial community change through drinking water treatment processes. International Journal of Environmental Science and Technology. 2015, 12, 6:1867-1874. DOI: 10.1007/s13762-014-0540-0

64. Wu H.T., Zhang J.X., Mi Z.L., Xie S.G.^*, Chen C.^*, Zhang X.J. Biofilm bacterial communities in urban drinking water distribution systems transporting waters with different purification strategies. Appl Microbiol Biotechnol. 2015. 99, 4: 1947-1955

65. Lin P.F., Zhang Y., Zhang X.J., Chen C.^*, Xie Y.F., Suffet I.H.M. Applying chemical sedimentation process in drinking water treatment plant to address the emergent arsenic spills in water sources. Frontiers of Environmental Science and Engineering. 2015. 9(1):50-57.

66. Lin P.F., Zhang Y., Zhang X.J., Chen C.^*, Xie Y.F., Suffet I.H.M. The influence of chlorinated aromatics' structure on their adsorption characteristics on activated carbon to tackle chemical spills in drinking water source. Frontiers of Environmental Science and Engineering, 2015, 9(1): 138–146.

67. Li X., Wang J., Liu Y.Y., Shi J., Zhang X.J., Chen C.^* Odorant screening and possible origin analysis of odor episodes in one reservoir in northern China. Journal of Water Supply: Research and Technology—AQUA. 2015, 64, 7: 847-856.

68. Lin P.F., Zhang X.J., Wang J., Zeng Y.N., Liu S.M., Chen C.^* Comparison of different combined treatment processes to address the source water with high concentration of natural organic matter during snowmelt period. Journal of Environmental Sciences, 2015. 27: 51-58.

69. Liao X.B.^#, Chen C.^#, Zhang J.X., Dai Y., Zhang X.J, Xie S.G.^* Dimethylamine biodegradation by mixed culture enriched from drinking water biofilter. Chemosphere. 2015, 119: 935–940

70. Liao X.B.^#, Chen C.^#, Zhang J.X., Dai Y., Zhang X.J, Xie S.G.^* Operational performance, biomass and microbial community structure: impacts of backwashing on drinking water biofilter. Environ Sci Pollut Res. 2015, 22:546–554. DOI 10.1007/s11356-014-3393-7

71. Liu S.M.^*, Che H., Smith K., Chen C. A method of detecting contamination events using multiple conventional water quality sensors. Environmental Monitoring and Assessment. 2015; 187(1):4189

72. Wu H.T., Mi Z.L., Zhang J.X., Chen C.^*, Xie S.G.^* Bacterial Communities Associated with An Occurrence of Colored Water in An Urban Drinking Water Distribution System. Biomedical and Environmental Sciences. 2014, 27(8): 646-650.

73. Liao X.B., Wang C.K., Wang J., Zhang X.J., Chen C.^*, Krasner S.W., Suffet I.H.M. Nitrosamine Precursor and DOM Control in a Wastewater-Impacted Drinking Water. Journal of American Water Works Association. 2014, 106, 7: 307-318.

74. Chen C.^*, Leavey S., Krasner S.W, Suffet I.H.M. Applying Polarity Rapid Assessment Method and Ultrafiltration to Characterize NDMA Precursors in Wastewater Effluents. Water Research. 2014. 57: 115-126.

75. Zhang X.J., Mi Z.L., Wang Y., Liu S.M. Niu Z.B., Lu P.P., Wang J., Gu J.N., Chen C.^* A Red Water Occurrence in Drinking Water Distribution Systems Caused by Changes in Water Source in Beijing, China: Mechanism Analysis and Control Measures. Frontier of Environmental Science and Engineering. 2014, 8, 3: 417-426. DOI 10.1007/s11783-013-0558-4

76. Lu P.P., Zhang X.J., Zhang C.Q., Niu Z.B., Xie S.G., Chen C.^* Biostability in distribution systems in one city in southern China: characteristics, modeling and control strategy. Journal of Environmental Sciences-China. 2014; 26(2):323–331.

77. Feng S., Chen C., Wang Q.F., Yang Z.Y., Zhang X.J., Xie S.G.^* Characterization of microbial communities in a granular activated carbon–sand dual media filter for drinking water treatment. Int. J. Environ. Sci. Technol. 2013,10,5: 917-922.

78. Feng S., Chen C., Wang Q.F., Yang Z.Y., Zhang X.J., Xie S.G.^* Microbial community in a full-scale drinking water biosand filter. Journal of Environmental Biology. 2013, 34, 321-324.

79. Wang C.K., Zhang X.J., Wang J., Liu S.M., Chen C.^*, Xie Y.F. Effects of organic fractions on the formation and control of N-nitrosamine precursors during conventional drinking water treatment processes. Science of the Total Environment. 2013, 449, 295-301

80. Wang C.K., Zhang X.J., Wang J., Chen C^*. Factors controlling N-nitrosodimethylamine (NDMA) formation from dissolved organic matter. Frontier of Environmental Science and Engineering, 2013. 7(2): 151-157.

81. Liao X.B., Chen C., Wang Z., Wan R., Chang C.H., Zhang X.J., Xie S.G. Pyrosequencing analysis of bacterial communities in drinking water biofilters receiving influents of different types. Process Biochemistry. 2013, 48: 703-707.

82. Lu P.P., Chen C., Wang Q.F., Wang Z., Zhang X.J., Xie S.G. Phylogenetic diversity of microbial communities in real drinking water distribution systems. Biotechnology and Bioprocess Engineering. 2013, 18: 119-124

83. Liao X.B., Chen C., Zhang X.J., Xie S.G. Changes of biomass and bacterial communities in biological activated carbon filters for drinking water treatment. Process Biochemistry. 2013, 48: 312-316.

84. Meng F.L., Liu S.M., Ostfeld A, Chen C., Burchard-Levine A. A deterministic approach for optimization of booster disinfection placement and operation for a water distribution system in Beijing. Journal of Hydroinfomatics. 2013, 15, 3: 1042-1058.

85. Wang C.K., Zhang X.J., Wang J., Chen C.^* Characterization of dissolved organic matter as N-nitrosamine precursors based on hydrophobicity, molecular weight and fluorescence. Journal of Environmental Sciences-China. 2013, 25(1). 85-95.

86. Liao X.B., Zhang X.J., Wang J., Wang C.K., Chen C.^* Combined conventional and O₃-BAC process: a feasible solution for organic matters and antibiotics pollutants in a lake of East China. Water Science and Technology: Water Supply. 2013. 13, 6: 1470-1477.

87. Wang C.K., Zhang X.J., Wang J., Chen C.^* Detecting N-nitrosamines in water treatment plants and distribution systems in China using ultra-performance liquid chromatography-tandem mass spectrometry. Frontier of Environmental Science and Engineering. 2012, 6(6): 770-777.

88. Hanigan D., Zhang J.W., Herckes P., Krasner S.W., Chen C., Westerhoff P. Adsorption of N-Nitrosodimethylamine Precursors by Powdered and Granular Activated Carbon. Environ. Sci. Technol. 2012, 46 (22), 12630–12639.

89. Liao X.B., Chen C., Chang C.H., Wang Z., Zhang X.J., Xie S.G. Heterogeneity of microbial community structures inside the up-flow biological activated carbon (BAC) filters for the treatment of drinking water. Biotechnol Bioprocess Eng. 2012, 17: 881–886.

90. Feng S., Zhang X.J., Wang Q.F., Wan R., Chen C., Xie S.G. Heterogeneity of ammonia-oxidizing community structures in a pilot-scale drinking water biofilter. International Biodeterioration & Biodegradation. 2012, 70: 148-152.

91. Chen Y.Q., Chen C.^*, Zhang X.J., Zheng Q., Liu Y.Y. Inactivation of persistent Mycobacteria mucogenicum in water: chlorine resistance and mechanism analysis. Biomed. Environ. Sci. 2012, 25(2): 230-237.

92. Du P.F., Chen J.N., Chen C., Liu Y., Liu J.G., Wang H.T., Zhang X.J. Environmental risk evaluation to minimize impacts within the area affected by the Wenchuan earthquake. Science of the Total Environment. 2012, 419: 16-24.

93. Feng S., Xie S.G., Zhang X.J., Yang Z.Y., Ding W., Liao X.B., Liu Y.Y., Chen C.^* Ammonium removal pathways and microbial community in GAC-sand dual media filter in drinking water treatment. Journal of Environmental Sciences-China. 2012, 24(8): 1-8.

94. Li Y.H., Wang J., Zhang W., Zhang X. J., Chen C.^* Effect of Powdered Activated Carbon on Immersed Hollow Fiber Ultrafiltration Membrane Fouling Caused by Particles and Natural Organic Matter. Desalination. 2011, 278, 1-3: 443-446

95. Li Y.H., Wang J., Zhang W., Zhang X. J., Chen C.^* Effects of coagulation on submerged ultrafiltration membrane fouling caused by particles and natural organic matter. Chinese Science Bulletin, 2011, 56, 6:584-590.

96. Zhang, X. J., Chen, C.^*, Lin, P.F., Hou A.X., Niu Z.B., Wang J. Emergency Drinking Water Treatment during Source Water Pollution Accidents in China: Origin Analysis, Framework and Technologies. Environ. Sci. Technol. 2011, 45, 1: 161-167.

97. Chen C. ^*, Zhang X.J., Zhu L.X., He W.J., Han H.D. Changes in different organic matter fractions during conventional treatment followed by advanced treatment. Journal of Environmental Sciences-China. 2011, 23, 4: 582-586.

98. Zhang W., Zhang X.J., Li Y.H., Wang J., Chen C.^*. Membrane flux dynamic in the submerged ultrafiltration hybrid treatment process when removing particles and natural organic matter. Journal of Environmental Sciences-China. 2011, 23, 12: 1970-1976.

99. Zhang X.J., Chen C. ^*, Ding J.Q., Hou A.X., Li Y., Niu Z.B., Su X.Y., Xu Y.J., Laws E. The 2007 water crisis in Wuxi, China: analysis of the origin. Journal of Hazardous Material. 2010, 182, 130-135.

100. Li, Y.H., Zhang W., Zhang X.J., Chen C.^*, Wang J. Characterization of fouling in immersed polyvinylidence fluoride hollow fibre membrane ultrafiltration by particles and natural organic matter. Desalination and Water Treatment. 2010 18: 309-314.

101. Li Y, Zhang X, Chen C. Reviews on Analytical Technologies of Sulfur Odorants in Water with Chromatography. Progress in Chemistry. 2009. 21(12):2718-2725.

102. Zhang X.J., Chen C.^*. Emergency drinking water treatment in source water pollution incident: Technology and practice in China. Frontier of Environmental Science and Engineering in China. 2009, 3(3):364-368.

103. Wang Y, Zhang, XJ, Feng S, Chen C. Study on inactivation of iron bacteria isolated from real drinking water distribution systems by free chlorine and chloramine. Annals of Microbiology, 2009, 59 (2): 353-358.

104. Chen C.^*, Zhang X.J., Zhu L., Liu J., He W., Han H. Disinfection by-products and their precursors in a water treatment plant in north China: seasonal changes and fraction analysis. Science of the Total Environment. 2008, 397: 140-147.

105. Xie S.B., Yang J., Chen C., Zhang X.J., Wang Q.L., Zhang C. Study on biosorption kinetics and thermodynamics of uranium by Citrobacter freudii. Journal of Environmental Radioactivity. 2008. 99, 1, 126-133 .

106. Zhang X. J., Chen C.^*, Wang Y. Synergetic inactivation of microorganisms by short-term free chlorination and subsequent monochloramination in drinking water disinfection. Biomed. Environ. Sci. 2007, 20:373-380.

107. Chen C.^*, Zhang X.J., He W.J., and Han H.D. Comparison of seven kinds of drinking water treatment processes to enhance organic material removal: a pilot test. Science of the Total Environment. 2007, 382: 93-102.

108. Chen C.^*, Zhang X. J., He W. J., and Han H. D. Simultaneous Control of Microorganisms, Disinfection By-products by Sequential Chlorination. Biomed. Environ. Sci. 2007, 20:119-125.

109. Chen C.^*, Zhang X. J., Wang Y., Zhu L., Liu J. Waste water disinfection during SARS epidemic: aiming for microbiological and toxicological control. Biomed. Environ. Sci., 2006, 19: 173-178.

^* Corresponding author

PLENARY CONFERENCE SPEECHES

1. Chen Chao. The 50 years of research on disinfection by-products in water. 4^th International conference on Disinfection and Disinfection By-Products. Oct 21-24, 2024. Almeria, Spain. Plenary presentation.

2. Chen Chao. Research in advance, act quickly, and regulate wisely: aiming to satisfy the comprehensive disinfection demand during the COVID-19 pandemic. 3^rd IWA Disinfection and Disinfection By-Products conference. June 28-July 1, 2022. Milan, Italy. Plenary presentation.

3. Chen Chao. A Tale of Two DBPs in China: Carbonaceous DBPs vs. Nitrogenous DBPs. 2^nd IWA Disinfection and Disinfection By-Products conference. May 14-18, 2018. Beijing, China. Plenary presentation.

4. Chen Chao. Nitrosamine Precursor Characterization, Tracing and Control Some New Insights by the Polarity Rapid Assessment Method (PRAM). Gordon DBP conference. July 31 - August 4, 2017. Mount Holyoke College. South Hadley, MA. Plenary presentation.

5. Chen Chao. Engineer’s Choice to Address the Nitrosamine Concern in Drinking Water Systems around China. Xiang Shan Science Conferences, 595th Session, Health Risk & Control of DBPs in China. May 25-26, 2017. Plenary presentation.

PATENTS

1. Zhang Xiaojian, Sheng Deyang, Chen Chao, et al. A method for removing thallium in drinking water source. Chinese Patent: ZL 2011102312273

2. Zhang Xiaojian, Mi Zilong, Chen Chao, et al. A method for investigating the iron stability of inner scale of drinking water pipeline. Chinese Patent: ZL 2011102583805

3. He Wenjie, Zhang Xiaojian, Bo Jianwei, Chen Chao, et al. A mobile pilot test instrument for emergency drinking water treatment. Chinese Patent: ZL 2011102978000

4. Dong Hong, Zhang Xiaojian, Yang Nan, Chen Chao, et al. An integrated and mobile instrument of powder reagents solution and feeding. Chinese Patent: ZL 2011101552104. 2012

5. Zhang Xiaojian, Chen Chao, et al. The air stripping for halogenated hydrocarbon removal in drinking water supply. Chinese Patent: ZL 2010105233550. 2012

6. Zhang Xiaojian, Zhang Wei, Chen Chao, et al. A waterfall biofilter for pre-treatment of drinking water supply in rural area. Chinese Patent: ZL 2010102754679, 2012

7. Zhang Xiaojian, Zhang Yue, Chen Chao, et al. Removal of metal contaminants in water by alkaline sedimentation, Chinese Patent: ZL 2008100560046, 2010.10

8. Zhang Xiaojian, Chen Chao, He Wenjie and Han Hongda, System for addition and quick mixing of ammonia in clear well, Chinese Patent: ZL 2005100866096, 2007.3

9. Zhang Xiaojian, Chen Chao, He Wenjie and Han Hongda, Sequential chlorination of short-term free chlorination and subsequent monochloramination, Chinese Patent: ZL 2004100427906, 2006.10.