摘要
采用水平潜流人工湿地处理农村生活污水,结果显示:人工湿地对生活污水中NH4+-N、TN、COD和TP的平均去除率分别为62.9%、59.1%、65.1%和76.0%,出水基本可达到《城镇污水处理厂污染物排放标准》(GB18918-2002)一级B标准。污染物的去除率受季节和温度的影响,其中,NH4+-N、TN和COD的去除率受季节变化影响显著,而TP的去除率受季节变化影响不明显。以石膏作为人工湿地的添加剂可有效弥补因基质净化能力降低而导致TP去除率下降的缺陷,强化了人工湿地对TP的去除效果。
Horizontal subsurface flow constructed wetland is used in rural domestic sewage treatment.It can remove 62.9% of NH＋4-N,59.1% of TN,65.1% of COD and 76.0% of TP from rural domestic sewage and the effluent concentrations generally satisfy theⅠB level of Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant（GB18918-2002）.Season changes has a significant impact to the removal efficiency of NH＋4-N,TN and COD,but the removal efficiency of TP changes little as season changes.Using gypsum as the additive of constructed wetland can effectively improve the removal efficiency of TP.
出处
《中国农村水利水电》
北大核心
2011年第2期1-3,7,共4页
China Rural Water and Hydropower
基金
国家高技术研究发展计划(863)项目子课题"农村生活污水处理技术与示范工程(2002AA601012-1)"
水利部公益性行业科研专项经费项目(200901006
200901007)
关键词
人工湿地
生活污水
去除效果
constructed wetland
domestic sewage
removal efficiency
