摘要
为提高曝气生物滤池的除磷能力,采用曝气/间歇曝气两级生物滤池处理模拟生活污水,考察了系统对COD和TP的去除效果。结果表明,当间歇曝气生物滤池的曝气和停曝时间分别为2 h和1 h时,系统对COD的去除效果不会受到明显的负面影响,出水COD达到《城镇污水处理厂污染物排放标准》(GB 18918—2002)中的一级B标准。对TP的去除主要集中在采用间歇曝气的生物滤池中,其对TP的去除率平均为59%,系统对TP的去除率平均为72%。曝气/间歇曝气两级生物滤池在保证对COD去除效果的前提下大大提高了系统的除磷率,解决了传统曝气生物滤池除磷率低的问题。
In order to improve phosphorus removal capacity of the biological aerated filter, the aerated/intermittent aerated two-stage biological filter was used to treat simulated domestic sewage, and COD and TP removal efficiencies were investigated. The results show that when the aerated and non-aerated periods of the intermittent aerated biological filter are 2 h and 1 h, respectively, COD removal efficiency is not significantly influenced, and the effluent COD satisfies the I-B criteria specified in Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant （ GB 18918 -2002）. The intermittent aerated biological filter takes the main responsibility for TP removal, an average of 59%, which is a large portion of the system＇ s 72%. In conclusion, the aerated/intermittent aerated two-stage biological filter ensures the COD removal, improves TP removal, resolving many disadvantages of the conventional biological aerated filter.
出处
《中国给水排水》
CAS
CSCD
北大核心
2007年第21期70-72,共3页
China Water & Wastewater
关键词
曝气/间歇曝气两级生物滤池
生活污水
生物除磷
aerated/intermittent aerated two-stage biological filter
domestic sewage
biologieal phosphorus removal
