摘要
采用厌氧-接触氧化-砂滤组合工艺处理小水量的农村户型生活污水,厌氧工序作为预处理,通过水解酸化作用提高污水的生化性,进入好氧接触氧化工序去除有机物及氮,并按除磷脱氮要求设置回流、排泥装置,后端设置砂滤组合,通过过滤、吸附及生化作用,进一步去除磷等污染物.试验结果表明,该工艺对COD去除率达到80.00%,TP去除率达到40.39%,NH3-N去除率达到53.12%.
A combined process of anaerobic,contact oxidation and sand filtration is employed in small amount of water treatment of countryside household sewage.Anaerobic process is taken as a pretreatment to increase the biodegradability of the sewage through hydrolysis acidification.The aerobic contact oxidation process is then used to remove organic matter and nitrogen,with reflux and mud removal equipments to meet the requirements of phosphorus and nitrogen removal.Finally,sand filter is set to remove the pollutants through filtration,adsorption and biochemical effects.It is shown through the results that the COD removal rate is 80.00%,TP removal efficiency 40.39%,and NH3-N removal rate 53.12 %.
出处
《昆明理工大学学报（理工版）》
北大核心
2010年第4期93-97,共5页
Journal of Kunming University of Science and Technology(Natural Science Edition)
基金
"2009年大理州环保局户型污水创新研究项目"阶段性研究成果
关键词
农村生活污水
厌氧
接触氧化
砂滤
rural domestic sewage
anaerobic
contact oxidation
sand filtration
