摘要
为了使太湖地区农村污水处理达到占地面积小、除磷脱氮效率高、管理简单、运行和建设费用低的目标,采用厌氧/跌水充氧接触氧化/人工湿地组合工艺进行了工程规模的试验研究。结果表明,在厌氧池水力停留时间为2 d、5级跌水充氧接触氧化池总水力停留时间为2 h、并采用50 cm/d的高水力负荷人工湿地的条件下,该组合工艺对COD和TN的平均去除率分别为81%和83%,对TP的平均去除率在进水TP>1.5 mg/L时达82%,在进水TP<1.5 mg/L时为72%。
In order to meet the technical requirements of smaller occupancy area, higher efficiency of nitrogen and phosphorus removal, easier maintenance and lower operation and construction cost in the treatment of rural sewage in the Taihu Lake valley, a full-scale experiment on use of the combined process of anaerobic/waterfall aeration contact oxidation/constructed wetland was carried out. The operating parameters are set as follows： HRT of 2 d in the anaerobic tank, HRT of 2 h in the five-step waterfall aeration contact oxidation and HLR of 50 cm/d in the constructed wetland. Under these operation conditions, the average removal efficiencies of COD and TN are 81% and 83% respectively, and the average removal efficiency of TP reaches 82% and 72% when the influent TP is higher than 1.5 mg/L and lower than 1.5 mg/L.
出处
《中国给水排水》
CAS
CSCD
北大核心
2007年第3期57-59,共3页
China Water & Wastewater
基金
国家高技术研究发展计划(863)项目(2002AA601012-1A)
国家自然科学基金资助项目(50678035)
关键词
跌水充氧
人工湿地
农村污水
磷
氮
waterfall aeration
constructed wetland
rural sewage
phosphorus
nitrogen
