摘要
采用兼氧接触氧化与土地渗滤联合处理工艺对农村混合污水进行了试验。结果表明，系统对污染物有良好的去除效果。在进水COD397-564mg／L条件下，兼氧接触氧化水力停留时间为24h时COD去除率大于75％；经过土地渗滤系统处理，在0．02m。／（m^2·d）的水力负荷下，COD去除率大于60％，氨氮、总磷的去除率大于99％。
A small facultative contact stabilization and soil infiltration system was employed for energy efficient and cost effective treatment of mixed wastewater from a rural community in Zhejiang. For a feed with a COD of 397-564 mg/L,the first stage contact stabilization treatment employing an air/liquid ratio of 2. 6 （DO 〈 0. 5 mg/L） achieved a COD reduction of more than 68% and 75% at a HRT of 12 and 24 h, respectively. The second stagesoil infiltration treatmen removed nearly all NH3-N and total phosphorus and produced an effluent with a COD of 〈60 and 50 mg/L when it was operated at a hydraulic loading of 0.03 and 0.02 mS/（m^2 ·d）,respectively, even at a low temperature （〈 5 ℃） in the winter.
出处
《环境污染与防治》
CAS
CSCD
北大核心
2007年第2期145-147,共3页
Environmental Pollution & Control
基金
浙江省科技攻关重大项目(No2004C13003)
关键词
农村污水
微动力
兼氧接触氧化
土地渗滤
Rural wastewater Energy efficient Facultative contact stabilization Soil infiltration
