垂直流-水平流复合人工湿地处理系统净化效果影响因素的研究.pdfVIP

仲恺农业技术学院学报，21(1)：23～28，2008 Journa／ofZhongkai Unwe~ity ofAgriculture and Technology 文章编号：1006—0774(2008)01—0023—06 垂直流一水平流复合人工湿地处理系统 净化效果影响因素的研究 文伟发 ，马 磊 ，王梦男 (1．广东农业科学院土壤肥料研究所，广东广州510640； 2．华南农业大学环境科学与工程系，广东广州510642) 摘要：就垂直流一水平流复合人工湿地系统对化粪池出水净化效果的影响因素进行了研究．结果表明，水力停留 时间 (Hydraulic retention time，HRT)分别为2和3 d时，复合系统对COD和BOD 的去除率最大．在HRT为3 d 的前提下，复合系统对COD、BOD NH3．N的去除率与COD、BOD NH3一N负荷之间呈抛物线关系．3个复合系 统中，VH1对COD和NH3．N的去除效果明显，达最大去除率时COD负荷为25．40 m2·d)、NH3-N负荷为14．82 2 · m d)，当B0D5负荷分别达13．75 m ·d)时，其对B0D5的去除率也达到最大；复合系统对COD、B0D5 的去除率与气温之间呈抛物线关系，VH1对COD的去除效果明显，当气温为23．5℃时对COD的去除率最大，而 当气温为21．1℃时，对BOD 的去除率最高；复合系统对NH，一N的去除率与气温之间呈正相关关系． 关键词：复合人工湿地；水力停留时间；环境因子；污染负荷 中图分类号：X52 文献标识码：A Influencing factors on purification efficiency by means of hybrid constructed wetlands system of vertical-flow and horizontal-flow WEN Wei．fa ，MA Lei ，WANG Meng．nan (1．Institute of Soil and Fertilizer，Guangdong Academe of A cultural Sciences，Guangzhou 510640，China； 2．Department of Environmental Science and Engineering，South China Agricultural University，Guangzhou 5 10642，China) Abstract：Influencing factors on purification efficiency of outflow to septic tank by means of hybrid con— structed wetlands system of vertical—flow and horizonml—flow were studied．The result showed that the re— moval efficiencies of COD，BOD5 were the highest when the Hydraulic retention time(HRT)was 2-day， 3一day respectively．The removal efficiencies of COD，BOD5 and NH3-N in the hybrid system had quadrat— ic correlation with pollutant loading when the HRT was 3一day．VH 1 removed the COD and NH3一N more significantly．The removal efficiencies of COD and NH3一N were the highest when the COD l