摘要
考察了新型人工湿地——塔式复合人工湿地(TICW)对农村生活污水的处理效果。结果表明,TICW对污染物具有较高的去除能力,脱氮效果尤其明显,对COD、NH4+-N、TN、TP的去除率分别为72%、82%、83%、63%;TICW的瀑布式水流增强了污水的充氧效果,湿地土壤中氨化菌、硝化菌的数量均较多,分别为107～108CFU/g土壤和104～105MPN/g土壤,提高了湿地的脱氮性能;木本植物和地方特有的经济作物——蔺草的结合使用使湿地在冬季仍能保持较高的除污能力。
The treatment efficiency of rural domestic sewage by tower-type integrated constructed wetland was investigated. The results show that the removal efficiencies of COD, NH4 - N, TN and TP are 72%, 82%, 83% and 63% respectively. The oxygen content of sewage is increased due to the waterfall flow. The amounts of ammonifying bacteria and nitrifying bacteria in the wetland are 10^7 to 10^8 CFU/g （soil） and 10^4 to 10^5 MPN/g （soil） respectively, which improves the nitrogen removal performance of the wetland. The combined use of woody plants and mat rush in wetland keeps good treatment efficiency of the wetland during winter period.
出处
《中国给水排水》
CAS
CSCD
北大核心
2008年第21期60-63,共4页
China Water & Wastewater
基金
宁波市自然科学基金资助项目(2006A610078)
关键词
塔式复合人工湿地
农村生活污水
脱氮
蔺草
tower-type integrated constructed wetland
rural domestic sewage
nitrogen re moval
mat rush
