以稻秆为固体碳源处理分散养猪冲洗水的试验研究

中国环境科学2015,35(7)：2052~2058ChinaEnvironmentalScience以稻秆为固体碳源处理分散养猪冲洗水的试验研究宋爱红1,2,3,沈志强2,3,周岳溪2,3*,刘珊1,肖宇2,3,4,苗莹1,2,3(1.长安大学环境科学与工程学院,陕西西安710054；2.中国环境科学研究院水污染控制技术研究中心,北京100012；3.中国环境科学研究院环境基准与风险评估国家重点实验室,北京100012；4.兰州交通大学环境与市政工程学院,甘肃兰州730070)摘要：针对分散养猪废水经厌氧和人工湿地处理后存在C/N低的问题,以廉价的稻秆作为固体碳源和生物膜载体,研究反应器启动阶段运行性能、水力负荷的影响以及污染物沿程去除特性.结果表明NO3--N主要在反应器上部稻秆填充层被去除,去除率超过95%,且无明显NO2--N积累,反硝化速率为0.052mg/(g·h).稻秆本身会浸出释放有机物和氮(主要为NH4+-N),导致运行前期出水COD和NH4+-N高于进水,但仍远低于《畜禽养殖业污染物排放标准》(GB18596-2001)的排放限值,40d后COD逐步降至40mg/L左右.COD和NO3--N可在反应器下部的砖渣填充层被进一步去除.关键词：稻秆；固体碳源；反硝化；分散养猪废水中图分类号：X703文献标识码：A文章编号：1000-6923(2015)07-2052-07Researchontreatingdispersedpiggeryrinsewaterusingricestrawassolidcarbonsource.SONGAi-hong1,2,3,SHENZhi-qiang2,3,ZHOUYue-xi2,3*,LIUShan1,XIAOYu2,3,4,MIAOYing1,2,3(InstituteofEnvironmentalScienceandEngineering,Chang'anUniversity,Xian710054,China;ResearchCenterofWaterPollutionControlTechnology,ChineseResearchAcademyofEnvironmentalSciences,Beijing100012,China;StateKeyLaboratoryofEnvironmentalCriteriaandRiskAssessment,ChineseResearchAcademyofEnvironmentalSciences,Beijing100012,China;InstituteofEnvironmentalandMunicipalEngineering,LanzhouJiaotongUniversity,Lanzhou730070,China).ChinaEnvironmentalScience,2015,35(7)：2052~2058Abstract：AgainstthelowC/Nrationindispersedpiggerywastewaterafterthetreatmentofanaerobicandconstructedwetland,usinglow-costricestrawassolidcarbonsourceandbiofilmcarriertostudytheperformanceinstart-upstage,theeffectofhydraulicloadingandpollutantsremovalprofilealongtheheightofthereactorwereinvestigated.TheresultsshowedthattheNO3--Nwasremovedmainlyinthetoplayerofthereactor,whichfilledwithricestraw.TheremovalrateofNO3--Nwasover95%andthedenitrificationratewas0.052mg/(g·h),theeffluentwithoutobviousaccumulationofNO2--N,simultaneously.Inaddition,theCODandNH4+-Nofeffluentwashigherthantheinfluentattheearlystageowingtothericestrawitselfleachingorganicandnitrogensubstance(mainlyisNH4+-N),buttheconcentrationwasstillmuchlessthantheemissionlimitsofdischargestandardofpollutantsfor