摘要
对某企业青霉素废水的实际处理工程进行脱氮性能研究，该工程由原先的CASS池（有效容积为7500m3）改造成同时硝化反硝化系统。系统稳定运行的数据显示：当处理量为3533—5574m3／d，进水COD、TKN、NH3-N浓度分别为（2067～4706）、（230．7～322．4）、（114．7～286．2）mg／L时，出水COD、TN与NH3-N浓度分别为（188～473）、（27．1～34．2）、（0．8～6．1）mg／L。分析认为，系统高效脱氮的原因为：①较高的生物量（5．7～8．3g／L）与较长的泥龄（25．6d）；②系统长期运行稳定，有利于硝化菌与反硝化菌的生长；③在曝气池的前端发生了显著的反硝化脱氮。
The removal of nitrogen from penicillin wastewater in a full-scale facility was studied. The original CASS tank with working volume of 7 500 m3 and treatment capacity of 3 533 to 5 574 m3/d was reconstructed to a simultaneous nitrification and denitrification system. A good performance was a- chieved during stable operation. When the influent concentrations of COD, TKN and NH3 - N were 2 067 to 4 706 mg/L, 230.7 to 322.4 mg/L and 114.7 to 286.2 mg/L, the effluent concentrations of COD, TN and NH3 - N were 188 to 473 mg/L, 27.1 to 34.2 mg/L and 0.8 to 6.1 mg/L, respectively. The reasons for the efficient a long sludge retention time was beneficial for the growth nitrogen removal were as follows： i） a high biomass （5.7 to 8.3 g/L） and （25.6 d） were maintained in the system; ii） a long-term stable operation of nitrifiers and denitrifiers; and iii） a prominent denitrification occurred in the front of the aeration tank.
出处
《中国给水排水》
CAS
CSCD
北大核心
2014年第21期114-117,共4页
China Water & Wastewater
基金
国家环境保护公益性行业科研专项(201309047)
关键词
青霉素废水
氨氮
总氮
同时硝化反硝化
penicillin wastewater
ammonia nitrogen
total nitrogen
simultaneous nitrifica-tion and denitrification
