高盐高氮榨菜废水生物脱氮试验研究_周健

周健,曾朝银,龙腾锐,等.高盐高氮榨菜废水生物脱氮试验研究[J].环境科学学报,2005,25(12):1636-1640ZHOUJian,ZENGChaoyin,LONGTengrui,etal.Studyonbiologicalnitrogenremovalinmustardtuberwastewaterwithhighsalinityandhighnitrogenconcentration[J].ActaScientiaeCircumstantiae,2005,25(12):1636-1640高盐高氮榨菜废水生物脱氮试验研究周健1,＊,曾朝银1,龙腾锐1,黄厚富21.重庆大学三峡库区生态环境教育部重点实验室,重庆4000452.浙江工业大学建筑设计研究院,杭州310014收稿日期:2005-06-07修回日期:2005-08-23录用日期:2005-09-01摘要:针对榨菜生产过程中产生的高盐高氮废水,探讨了在高盐条件下有机负荷、氮负荷、DO、pH等因素对SBBR反应器脱氮效能的影响.研究结果表明,在SBBR反应器中接种从榨菜腌制废水中筛选出的耐盐菌后,可使反应器对高盐废水具有良好的适应性,同时镜检发现其生物膜中存在大量丝状菌;反应器具有较强的同时硝化反硝化能力,有机负荷、氮负荷、DO、pH等因素对反应器脱氮效能的影响显著;研究得出其最优运行参数为有机负荷小于1.0kg·m-3·d-1、氮负荷小于0.15kg·m-3·d-1、DO大于5mg·L-1、进水pH大于7及温度大于20℃,在此条件下可使进水盐度(以NaCl计)为2%、CODCr为3500mg·L-1,TN为530mg·L-1,NH+4-N为150mg·L-1的榨菜废水,其出水CODCr小于80mg·L-1、NH+4-N小于3mg·L-1、TN小于16mg·L-1,NH+4-N和TN的去除率分别为98%和96%。关键词:榨菜废水;高盐废水;生物脱氮;同时硝化反硝化文章编号:0253-2468(2005)12-1636-05中图分类号:X703文献标识码:AStudyonbiologicalnitrogenremovalinmustardtuberwastewaterwithhighsalinityandhighnitrogenconcentrationZHOUJian1,＊,ZENGChaoyin1,LONGTengrui1,HUANGHoufu21.KeyLaboratoryoftheThreeGorgesReservoirRegionsEco-Environment,MinistryofEducation,ChongqingUniversity,Chongqing4000452.TheArchitecturalDesign&ResearchInstituteZhejiangUniversityofTechnology,Hangzhou310014Received7July2005;receivedinrevisedform23August2005;accepted1September2005Abstract:Aimingatthehighsalinityandhighnitrogenofthewastewaterproducedinthemanufacturingprocessofmustardtuber,theinfluenceofthefactorssuchasorganicloadingrate(OLR),nitrogenloadingrate(NLR),DOandpHontheeffectofthenitrogenremovalofSBBRreactorintheconditionofhighsalinitywasstudied.TheresultsshowedthatifthehalophilicbacteriaselectedfrommustardtuberwastewaterwereinoculatedintheSBBRreactor,thereactorcouldgetabetteradaptabilitytothehighsalinity.Andbytheobservationofmicroscope,itwasfoundthattherewereagreatmanyoffilamentousorganismsproliferatingonthebiologicalfilm.Thereactorshadrelativelystrongsimultaneousnitrificationanddenitrificationcapacity,theinfluencesofOLR,NLR,DOandpHonthenitrogenremovalwer