The polluted surface water in a certain park in the south has problems such as excessive Chemical Oxygen Demand(COD)and total nitrogen,which have an impact on the water environment quality of downstream urban rivers.Based on the polluted water quality situation,the project adopts an improved Anaerobic-Anoxic-Oxic(A2O)and Membrane Bio-Reactor(MBR)combined treatment process to enhance denitrification and difficult to degrade organic matter treatment.The effluent indicators are stable and meet the Class Ⅳ standard of the Environmental Quality Standards for Surface Water(GB 3838-2002).The treatment process,main structures,and supporting equipment design parameters of this combined process are introduced in detail,providing reference for the restoration of damaged water projects.
关键词
改进型厌氧-缺氧-好氧(A2O)/膜生物反应器(MBR)/地表水Ⅳ类标准
Key words
Improved Anaerobic-Anoxic-Oxic(A2O)/Membrane Bio-Reactor(MBR)/class Ⅳ standard for surface water
万方数据