摘要
A laboratory-scale sequencing batch reactor (SBR) is used to treat landfill leachate containing high concentration of ammonium nitrogen with municipal fecal supernatant. The SBR system is operated in the following sequential phases: fill period, anoxic period, aeration period, settling period, decant and idle period. The results indicated that the average removal efficiencies of COD, BOD5, TN, NH 4+-N were 93.76%, 98.28%, 84.74% and 99.21%, respectively. The average sludge removal loading rates of COD, BOD5, TN and NH 4+-N were 0.24 kg/(kg SS?d), 0.08 kg/(kg SS?d), 0.04 kg/(kg SS?d) and 0.036 kg/(kg SS?d), respectively. Highly effective simultaneous nitrification and denitrification was achieved in the SBR system. The ratio of nitrification and denitrification was 99% and 84%, respectively. There was partial NO?2 denitrification in the system.
A laboratory-scale sequencing batch reactor （SBR） is used to treat landfill leachate containing high concentration of ammonium nitrogen with municipal fecal supernatant. The SBR system is operated in the following sequential phases： fill period, anoxic period, aeration period, settling period, decant and idle period. The results indicated that the average removal efficiencies of COD, BOD5, TN, NH4^＋-N were 93.76%, 98.28%, 84.74% and 99.21%, respectively. The average sludge removal loading rates of COD, BOD5, TN and NH4^＋-N were 0.24 kg/（kg SS.d）, 0.08 kg/（kg SS.d）, 0.04 kg/（kg SS.d） and 0.036 kg/（kg SS.d）, respectively. Highly effective simultaneous nitrification and denitrification was achieved in the SBR system. The ratio of nitrification and denitrification was 99% and 84%, respectively. There was partial NO2^- denitrification in the system.
基金
Project supported by the National Natural Science Foundation of China (No. 20377013), Department of Science and Technology of Guangdong Province (Nos. 020959 and 2002C32108), and the New Century Outstanding Young Teacher Grant of Ministry of China
关键词
废水处理
生物处理法
浸出液
数值模拟
SBR
Sequencing batch reactor （SBR）, Leachate, Fecal supematant, Simultaneous nitrification, Denitrification
