摘要
考察了组合工艺对COD_(Cr),NH_4^+-N,TN及TP的去除效果。试验研究表明:组合工艺对COD_(Cr)的平均去除率为85.6%,对NH_4^+-N的平均去除率为96.2%,对TN的平均去除率为68.5%,对TP的平均去除率为89.8%,COD_(Cr),NH_4^+-N,TN及TP的出水平均质量浓度仅为26.6,1.7,3.1和0.4 mg/L,出水水质达到了GB 18918—2002《城镇污水处理厂污染物排放标准》一级A标准。
The pollutant removal effect of CODCr, NH4＋-N, TN and TP in the combined process is studied. The research showed that： the average removal rates of CODCr, NH4＋-N, TN and TP were 85.6%, 96.2%, 68.5% and 89.8% respectively. The average outflow concentrations of CODCr, NH4＋-N, TN and TP were only 26.6,1.7,13.1 and 0.4 mg/L respectively. The effluent water quality meet the demonds ofⅠA level of 《discharge standard of pollutants for municipal wastewater treatment plant》（GB18918—2002）.
出处
《环境科技》
2016年第2期21-24,共4页
Environmental Science and Technology
基金
水利部公益性行业科研专项经费项目(201301080
201401046)
南京水科院青年基金项目(Y514003
Y515003)
关键词
农村生活污水
双层生物滤池
组合工艺
总回流比
Rural area sewage
Dual-media bio-filter
Combined process
Total reflux ratio
