ORGANIC EMERGING CONTAMINANTS REMOVAL PROCESS IN WASTEWATER TREATMENT PLANTS AND PROSPECT
Emerging contaminants(ECs)are a kind of environmental pollutants with characteristics of biotoxicity,environmental persistence,and bioaccumulation,which pose great risks to the ecological environment or human health,and are widely detected in the process units of wastewater treatment plants(WWTPs)in China.This review focuses on the characteristics of ECs in China's WWTPs and the efficiency of each process to remove ECs.The results show that:compared with foreign standards for the control of new pollutants in WWTPs discharge and recycled water,China's standards mostly focus on the control of pesticides,and lack restrictions on drugs and personal care products(PPCPs)and endocrine disruptors(EDCs);PPCPs and EDCs have been detected in many domestic and foreign WWTPs studies.The primary treatment process of WWTPs has limited removal efficiency of PPCPs and EDCs.Biological treatment can effectively remove the above two kinds of ECs,but it still needs an in-depth treatment process to achieve complete removal.On this basis,the removal processes for different types of ECs in WWTPs are proposed,and the future development of the process for removing ECs in WWTPs is prospected.
organic emerging contaminantsEDCsPPCPswastewater treatment plantsremoval efficiencyeffluent control standard
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