人工增氧型复合湿地污染物净化效果  

Pollutant Removing Efficiency of Artificially Aerated Compound Wetland

作　　者：潘继征[1] 李文朝[1] 李海英[2] 柯凡[1,3] 

机构地区：[1]中国科学院南京地理与湖泊研究所湖泊与环境国家重点实验室,江苏南京210008 [2]中国水利水电科学研究院,北京100038 [3]中国科学院研究生院,北京100049

出　　处：《生态与农村环境学报》2010年第5期482-486,共5页Journal of Ecology and Rural Environment

基　　金：国家高技术研究发展计划(2005AA60101004);国家水体污染控制与治理科技重大专项(2008ZX07101-007-05);国家自然科学基金(41001324)

摘　　要：针对传统人工湿地负荷低、硝化能力弱和易堵塞的缺点,结合曝气生物滤池与人工湿地强化理论的研究成果,自主开发了人工增氧型复合湿地工艺,即生物接触氧化预处理+微曝气垂直流湿地+水平潜流湿地。通过对滇池北岸城郊混合制污水处理的模型试验,分析该工艺流程各净化单元的污染物去除效果。结果显示,人工增氧型复合湿地对不同水力负荷和污染负荷都体现了较强的缓冲调节能力和较高的净化效果。对污染物的总去除率分别为SS 94.5%、CODCr71.3%、氨氮72.3%,在进水总氮10.0 mg.L-1条件下实现了41.9%的总氮去除率,出水总氮均值为5.8 mg.L-1。Combining the research theory of biological aerated filter and constructed wetland,a new technology of artificially aerated integrated constructed wetland is developed to avoid such shortcomings of the traditional constructed wetland as low hydraulic loading,weak nitration capacity and easy clogging.This technology combines the processes of pre-treatment of bio-contact oxidation,artificially aerated vertical flow wetland and horizontal subsurface-flow wetland.This technology demonstrated excellent efficiency with enhanced capability of pollutant removing in an experiment on the north shore of Dianchi Lake in Yunnan Province.Results show that the artificially aerated integrated constructed wetland reflected a stronger buffering capacity and a higher purifying efficiency regardless of hydraulic load and pollution load.The total removal rate of SS,CODCr and NH3-N was as high as 94.5%,71.3% and 72.3%,respectively,and the total nitrogen removal rate was 41.9% when the inflow was 10.0 mg·L-1 in total N content,leaving 5.8 mg·L-1 of total N in the outflow.

关 键 词：人工增氧 人工湿地 净化效果 

分 类 号：X-651[环境科学与工程] X82