摘要：

为提高污染物去除效率,在渠式混凝土膜生物反应器内部的部分反应槽中增加间歇性的微曝气,增强反应器的好氧氧化作用;采用连续流运行方式,对实际生活污水进行了污水处理实验。实验结果表明,微曝气混凝土生态膜法的污水处理效率高:COD_Cr去除率>70%、BOD₅去除率>80%、氨氮去除率>75%、总氮和总磷的去除率均>50%,出水水质基本达到《城镇污水处理厂污染物排放标准》(GB 18918—2002)的一级B标准要求。

关键词: 混凝土, 膜反应器, 微曝气, 污水处理

Abstract:

In order to improve pollutant removal effects,sewage treatment experiments have been made with a homemade channel concrete eco-membrane biological reactor,in which micro aeration is adopted at some bed of the channel to increase intermittent micro aeration and enhance aerobic oxidation of the reactor.Experiments on treating actual sewage are carried out by continuous flowing operations.The results show that the technology of concrete eco-membrane with micro aeration has optimal sewage purification effects,i.e.COD_Cr removal rate > 70%,BOD₅ removal rate>80%，ammonia nitrogen removal rate>75%,and both of total nitrogen and total phosphorus removal rate>50%.The effluent water quality can basically reach the requirements of B standard of the first class of the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant（GB 18918—2002）.

Key words: concrete, membrane reactor, micro aeration, sewage treatment