摘要
为解决传统的脱氮除磷技术存在的碳源不足、菌群竞争、污泥龄难以控制等诸多问题,提出了CDPR-BAF污水生物处理工艺。通过设置BAF作为硝化段,系统不必外投硝酸盐即可为反硝化除磷提供充足的电子受体。试验结果表明,该工艺对COD、NH4+-N、TN和TP的去除率分别达90.5%、89%、81%和92.3%,同时处理效果稳定。缺氧段的N/P是工艺反硝化除磷的关键,系统运行稳定时反硝化聚磷菌所占比例达75.3%。
In order to solve the problems of carbon insufficiency,bacteria competition difficulty to control SRT in the traditional biological nitrogen and phosphorus removal process, CDPR-BAF was put forward. The laboratory-scale system can obtain good denitrifying phosphorous removal ability without extra nitrate addition by setting the BAF as a nitrification segment. The test result shows that the process has removal rate of 90.5% ,89% ,81% and 92.3% respectively for COD,NH4'-N,TN and TP,with stability in treatment effect. N/P is a key factor for denitrifying phosphorus removal in anoxic stage, The proportion ofdenitrifying phosphate accumulating organisms(DPB) is 75.3% in steady run-time of system.
出处
《水处理技术》
CAS
CSCD
北大核心
2010年第5期74-77,共4页
Technology of Water Treatment
基金
科技部中德科技合作项目"三峡库区水环境污染过程控制与安全保障技术研究"(2007DFA90660)
关键词
污水处理
CDPR—BAF
脱氮
除磷
sewage treatment
CDPR-BAF process
denitrification
phosphorus removal