摘要
厌氧、缺氧环境是生物脱氮除磷工艺必不可少的重要组成部分,就该两种环境的先后顺序及其对工艺性能的影响进行机理研究。结果表明:常规工艺厌氧(A1)/缺氧(A2)/好氧(O)布置方式的合理性是值得再探讨的。把常规工艺的厌氧、缺氧环境倒置过来,即以缺氧(A2)/厌氧(A1)/好氧(O)方式运行可明显提高工艺的氮磷脱除效果。在同等条件下,A2/A1/O系统的出水Ortho-P比常规A1/A2/O系统低50%,而比反硝化速率却比后者高40-50%。
Anaerobic and anoxic zones are two essential parts in biological nitrogen and phosphorus removal processes.The effect of the two zones in different orders on the performance of the process was studied, which showed that, the rationality of the conventional sequential arrangement of anaerobic (A1)/anoxic(A2)/aerobic(0)was doubtful,and the effectiveness of nitrogen and phosphurus removal could be evidently enhanced when the order of anaerobic and anoxic zones was reversed and the system was operated in a A2/A1/0 patten.Under equivalent conversions,the effluent ortho P content of the system with A2/A1/0 was 50% lower than that of A1/A2/0, where as the specific rate of denitrification was 40~50% higher.
出处
《中国给水排水》
CAS
CSCD
北大核心
1997年第3期7-10,共4页
China Water & Wastewater
关键词
生物脱氮除磷
倒置效应
压氧
缺氧
废水处理
Biological nitrogen and phosphorus removal.Order reversal of anaerobic and anoxic zones,Anoxic/anaerobic/aerobic system.