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时间:2020-03-27
《垂直流-水平潜流一体化人工湿地对菜地废水的净化效果.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、农业环境科学学报2012,31(1):166-171JournalofAgro-EnvironmentScience垂直流一水平潜流一体化人工湿地对菜地废水的净化效果朱太涛1,崔理华p,林伟仲2,黄睦凯1(1.华南农业大学资源环境学院环境科学与工程系,广州510642;2.环境保护部华南环境科学研究所,广州510655)摘要:广州市番禺区东升农场菜地废水未经处理直接排入水生植物塘,最终流入附近河流,由于菜地废水水质较差,对其造成了严重的污染,严重威胁了附近居民的饮水安全。为了提高菜地出水水质,减轻对河流
2、的污染,通过构建垂直流一水平潜流一体化人工湿地,对菜地废水进行净化处理。湿地经过9个月的运行,结果显示,湿地对COD、N瞰一N和TP的平均去除率分别达56.40%、79.09%和79.79%以上,COD、NH:一N和11P出水平均浓度分别为9.45、0.47mg·L-I和0.06mg·L-1,均达到《地表水环境质量标准》(GB3838--2002)Ⅱ类水质标准。湿地对TN的平均去除率较低,仅为35.08%,通过补充甘蔗叶作为碳源,湿地对TN的平均去除率显著提高,但随着碳源投加量的增加。去除率逐渐降低。本
3、实验碳源投加量以1.62ks·m。为宜,TN的平均去除率最高,达80.85%,出水TN平均浓度从3.06mg·L-1降低至0.90mg·L-1。关键词:菜地废水;水生植物塘;垂直流一水平潜流;净化效果;甘蔗叶;碳源中图分类号:X703.1文献标志码:A文章编号:1672—2043(2012)01-0166-06RemovalEfficienciesofWastewaterfromVegetableLandbytheIntegratedVertical-flowandHorizontal-flowCons
4、tructedWetlandsZHUTal-ta01,CUILi-huaI.'LINWei-zhon92,HUANGMu-kail(1.DepartmentofEnvironmentalScienceandEngineering,CoUegeofNaturalResourcesandEnvironment,SouthChinaAgriculturalUni-verity,Guangzhou510642,China;2.SouthChinaInstituteofEnvironmentalScience,M
5、inistryofEnvironmentalProtectionofPeople’8Re—publicofChina,Guangzbou510655,China)Abstract:UntreatedwastewaterwithpoorqualityfromvegetablelandsinDongshengFarm,PanyuDistrict,GuangzhouCityisdischargeddi-rectlyintomacrohydrophytepondsandeventuallyflowsintoad
6、jacentrivers.whichhaveseriouslypollutedthewaterl"esource8andthreatenedthesafetyofdrinkingwatererlocalresidents.Inthisstudy,theintegratedvertical-flowandhorizontal-flowconstructedwetlandsweredevel-opedtotreatthewastewaterforwaterqualityimprovement.Thenine
7、-monthoperationresultsindicatedthattheaverageremovalratesofCOD,N眦一N,andTPwere56.40%,79.09%,and79.79%,respectively.TheaverageconcentrationsofCOD,NH2-N,andTPfromtheeft]u-entwere9.45mg·L-1,O.47mg·L-1andO.06mg·L-1,respectively,whichwereallreachedtheLevel-IIo
8、f“EnvironmentalQualityStandardsforSurfaceWater”(GB3838—_2002).7rheaverageremovalrateofTNwaslowwithonly35.08%.Bysupplyingplantcarbonsuch鹪sugar-caneleavestOthewetlandsystem.theaverageremovalrateofTNWasimprovedsignitieanfly.H
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