摘要
Abstract
[Objective] The study aimed to investigate the performance of membrane sequencing batch bioreactor(MSBR)on the removal of nitrogen and phosphorus in municipal domestic sewage. [Method] The operation mode of anaerobic-oxic-anoxic-membrane effluent water (AOA-MSBR)was used to investigate the effect of MSBR system on the removal of nitrogen and phosphorus in municipal domestic sewage. [Result] Under the conditions of hydraulic retention time (HRT) of 11 h, sludge concn of 4 000～5 000 mg/L, the high effective removals of nitrogen and phosphorus were achieved through AOA-MSBR operation mode, with the removal efficiencies of COD,ammonian,total nitrogen and total phosphorus up to 95% , 97% , 89% and 90% ,resp. and the MSBR system had stronger ability of resistance to impact load. the MSBR system existed the simultaneous nitrification denitrification and denitrifying phosphorus removal, accounting for 15.5% and 16.5% of total removal rate of total nitrogen and total phosphorus. [Conclusion] In the environment of anaerobic-oxic-anoxic, the MSBR system showed the good condition of nitration and denitrification, which was propitious to the removal of nitrogen and phosphorus and it also had the simultaneous nitrification denitrification and denitrifying phosphorus removal, which strengthened the removal ability on nitrogen and phosphorus.关键词
膜序批式生物反应器/脱氮除磷/硝化反硝化/反硝化除磷Key words
Membrane sequencing batch reactor (MSBR)/ Nitrogen and phosphorus removal/Nitrification denitrification/Denitrifying phosphorus removal分类
资源环境
