自动增氧型垂直流人工湿地处理农村生活污水试验研究_李松
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2020-03-12 21:41:24
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农业环境科学学报2010,29(8):1566-1570JournalofAgro-EnvironmentScience摘要:针对人工湿地中溶解氧浓度不足的问题,采用自动增氧型垂直流人工湿地处理系统进行了农村生活污水脱氮除磷对比试验研究。结果表明,自动增氧型湿地内的DO浓度比非增氧型人工湿地高0.3mg·L-1左右,TN、NH+4-N去除率分别达到了67.41%、69.04%,比非增氧型湿地高14.57%、19.79%,但TP去除率与非增氧型湿地差异不显著。说明自动增氧措施对于增加人工湿地中的DO浓度,提高脱氮效率是有效的,但对于除磷效率无显著影响。关键词:自动增氧;人工湿地;农村生活污水;氮;磷中图分类号:X703.1文献标志码:A文章编号:1672-2043(2010)08-1566-05自动增氧型垂直流人工湿地处理农村生活污水试验研究李松1,王为东2,强志民2,梁新强3,王飞儿3,陈英旭3(1.浙江农林大学环境科技学院,杭州311300;2.中国科学院生态环境研究中心,环境水质学国家重点实验室,北京100085;3.浙江大学水环境研究院,杭州310029)Self-aerationVerticalFlowConstructedWetlandfortheTreatmentofRuralDomesticWastewaterLISong1,WANGWei-dong2,QIANGZhi-min2,LIANGXin-qiang3,WANGFei-er3,CHENYing-xu3(1.SchoolofEnvironmentalTechnology,ZhejiangA&FUniversity,Hangzhou311300,China;2.StateKeyLaboratoryofEnvironmentalAquaticChemistry,ResearchCenterforEco-EnvironmentalSciences,ChineseAcademyofSciences,Beijing100085,China;3.DepartmentofEnvironmentalEngineering,ZhejiangUniversity,Hangzhou310029,China)Abstract:Accordingtotheproblemoflowdissolvedoxygen(DO)contentandnitrogenremovalrateintheconstructedwetlandsystem,aself-aerationverticalflowconstructedwetlandwasdesignedtotreattheruraldomesticwastewaterbycomparingwiththenon-aerationverticalflowconstructedwetland.TheresultsshowedDOcontentoftheself-aerationverticalflowconstructedwetlandwasabout0.3mg·L-1higherthanthatofthenon-aerationconstructedwetland.ItsremovalratesofTNandNH+4-Nwere67.41%,69.04%,respectively,and14.57%,19.79%higherthanthoseofthenon-aerationconstructedwetland,respectively,suggestingthatitwasaeffectivemethodtoimprovethenitro-gen-removalrateoftheconstructedwetlandbytheself-aerationmeasures.Nodifferencewasfoundforthephosphorus-removalratebetweenthetwoverticalflowconstructedwetlands,whichsuggestedthattheself-aerationshowednosignificantinfluenceonphosphorus-removalrate.Keywords:self-aeration;constructedwetland;ruraldomesticwastewater;nitrogen;phosphorus收稿日期:2010-03-18基金项目:浙江省教育厅资助项目(200803727);水体污染控制与治理科技重大专项(2008ZX07101-006-02-05,2008ZX07101-006-08-A);校人才启动项目(2010FR035)作者简介:李松(1977
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