Dr. Amir Hossein Hamidian from University of Tehran, Iran and Prof. ZAHNG Yu from Research Center for Eco-Environmental Sciences under Chinese Academy of Sciences paid a visit to Institute of Hydrobiology (IHB) of Chinese Academy of Sciences on April 24^th, 2019.    

During their visit, Dr. Hamidian and Prof. Zhang made presentations with the title of “Environmental Issues of Anzali International Wetland in north of Iran, potentials for cooperation” and “Generation and Control of Secondary Risks in Biological Treatment Process: A Case Study of Pharmaceutical Wastewater” for IHB researchers and students, respectively.   

Dr. Hamidian introduced environmental problems of the Anzali International Wetland in Northern Iran and discussed the environmental pollution caused by waste discharge, especially plastic wastes.    

Prof. Zhang mainly elaborated the mechanism and control of secondary risks in biological treatment, and the research progress of selective destruction of antibiotic functional groups. Resistance genes and bacterial residue treatment was introduced using the spread and control of resistance genes in biological treatment of pharmaceutical wastewater as an example.   

Dr. Amir Hossein Hamidian is the director of the International Research Center for Water and Environment (IRCWE) and the editor in chief of the Journal of Natural Environment, University of Tehran. He has worked in several national and international projects, including CLIVAR, and was awarded several awards including research fellowship in the USA and China. He is the member of the editorial board of several international journals. He has published more than 100 research papers and three books in the University of Tehran.   

Prof. ZHANG Yu has been engaged in the research on the mechanism and control principle of water quality biotransformation. He mainly focuses on the identification, transformation and regulation of characteristic pollutants such as antibiotics/antibiotic-resistant genes in municipal and industrial wastewater. He has won the second prize of National Natural Science (2017, rank second).