Study on treatment of thermal hydrolysis anaerobic digester effluent by anaerobic ammonia oxidation technique
HAN Xiao-yu1,2, HUANG Jing2, LIU Xin-chun3, ZHANG Shu-jun2, PENG Yong-zhen1
1. Harbin Institute of Technology, Harbin 150090, China;
2. Research and Development Center of Beijing Drainage Group Corporation, Beijing Wastewater Recycling Engineering Technology Research Center, Beijing 100022, China;
3. College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
TH-ADE was treated by anaerobic ammonia oxidation (ANAMMOX) technique with no chemical agent added to remove ammonia nitrogen and total nitrogen simultaneously.Two methods including raw TH-ADE and dilution technique could achieve the purpose of start-up of the Integrated Fixed-Film Activated Sludge Systems (IFAS) reactor,total nitrogen removal rate and efficiency were 0.25~0.3kgN/(m3·d) and 70%~80% respectively.With ozone oxidation pretreatment,total nitrogen removal rate and efficiency had a certain range of increase in the IFAS reactor.Microorganism had a spatial distribution detected by molecular biological technology,ammonia oxidizing bacteria (AOB) mainly existed in the floc sludge,and anaerobic oxidizing bacteria (AnAOB) which had low tolerance to dissolved oxygen mainly distributed in the biofilm packing.
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