盐度负荷冲击对晚期垃圾渗滤液自养脱氮的影响

工业用水与废水INDUSTRIALWATER＆WASTEWATERVol.49No.3Jun.,2018刘甜甜1,2,3,4,杨培5,刘牡1,2,3,4,史彦伟1,2,3,4,任钦毅1,2,3,4(1.北控水务(中国）投资有限公司,北京100102；2.北京北华清创环境科技有限公司,北京100102；3.北京市再生水水质安全保障工程技术研究中心,北京100102；4.城镇污水深度处理与资源化利用技术国家工程实验室,北京100102；5.北京环境工程技术有限公司,北京100102）基金项目:国家重点研发计划课题(2016YFC0401103）；北京市优秀人才培养资助项目(2017754154700G106）晚期垃圾渗滤液氨氮(NH3-N）含量非常高,而有机物含量相对很低,其中COD与氮的比例甚至摘要:采用短程硝化与厌氧氨氧化组合的自养脱氮系统处理实际晚期垃圾渗滤液,重点考察了盐度对该系统的综合影响。结果表明,系统在盐度为10~20g／L范围内具有较强的抗盐度冲击能力,当盐度升高至35g／L时,NH3-N和TN去除率分别下降到84.3％和77.7％,而COD的去除率依然能够维持在63.0％。与DO相比采用PH值为模糊控制参数具有更高的抗盐度负荷冲击能力。由于盐度与游离氨的同步选择性抑制作用,亚硝酸盐积累率呈小幅度提升。定量聚合酶链式反应检测分析表明,较高盐度使得厌氧氨氧化菌群的绝对量和所占的比例均出现了显著下降,高盐度条件下反硝化菌更具竞争优势。关键词:盐度负荷冲击；晚期垃圾渗滤液；自养脱氮；模糊控制；菌群结构中图分类号:X703.1文献标志码:A文章编号:_1009-2455(2018）03-0012-05InfluenceofsalinityloadimpactonautotrophicnitrogenremovalfrommaturelandfillleachateLIUTian-tian1,2,3,4,YANGPei5,LIUMu1,2,3,4,SHIYan-wei1,2,3,4,RENQing-yi1,2,3,4(1.BeijingEnterprisesWaterGroup(China）InvestmentLimited,Beijing100102,China；2.BeijingBeihuaqingchuangEnvironmentalScienceandTechnologyCo.,Ltd.,Beijing100102,China;3.BeijingEngineeringResearchCenterofReclaimedWaterSecurityGuarantee,Beijing100102,China;4.NationalEngineeringLaboratoryforAdvancedMunicipalWastewaterTreatmentandReuseTechnology,Beijing100102,China;5.BeijingEnvironmentalEngineeringTechnologyCo.,Ltd.,Beijing100102,China）Abstract:Usingautotrophicnitrogenremovalsystemwithshort-cutnitrificationandanaerobicammoniaoxidationcombinedprocesstotreatmaturelandfillleachate,theinfluenceofsalinityonthesaidsystemoperationwasemphaticallyinvestigated.Theresultsshowedthat,thesystemwithasalinityscopeof10-20g／Lhadastrongabilitytoresistsalinity,whenthesalinityincreasedto35g／L,theremovalratesofNH3-NandTNdecreasedto84.3％and77.7％respectively,andtheremovalrateofCODstillremainedat63.0％.ComparedtoDO,thepHvaluewasbetterasthefuzzycontrolparameter,whichhadhighersalinityloadresistancecapacity.Duetothesimultaneousselectiveinhibitionofsalinityandfreeammonia,theaccumulationrateofnitritewasslightlyincreased.QuantitativePCRanalysisshow