AO_OAO_Fenton两级生物法处理工业园区内焦化废水_韩小刚
- 污水处理护水清
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2020-02-29 21:20:23
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AO/OAO/Fenton两级生物法处理工业园区内焦化废水韩小刚1,2,韩立辉3,陈星1,4,高迎新1,2,杨敏1,2(1.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;2.中国科学院大学,北京100049;3.唐山中科格润环境技术有限公司,河北唐山063000;4.合肥工业大学工业装备与技术研究院,安徽合肥230009)摘要:针对某市工业园区5000m3/d焦化废水处理出水水质难以稳定达标的问题,首次采用“前端各厂AO预处理—后端园区OAO+Fenton深度处理”的工艺模式,极大地提高了系统抗冲击能力,保障工业园区内焦化厂熄焦用水稳定达标。工程调试运行表明,两级生物处理模式解决了焦化废水生物系统易冲击问题,最终出水COD、NH+4-N、TN分别降至20~30、<2、<10mg/L,去除率分别高达99%、98%、95%。同时,出水COD、NH+4-N、TN、TP、氰化物、硫化物、挥发酚、油类均优于《炼焦化学工业污染物排放标准》(GB16171—2012)直排标准,并达到膜前标准,为焦化废水零排放奠定了基础。关键词:焦化废水;两级生物处理;硝化反硝化;抗冲击能力中图分类号:TU993文献标识码:B文章编号:1000-4602(2019)02-0053-05基金项目:中国科学院STS区域重点项目通信作者:高迎新E-mail:gyx@rcees.ac.cnDesignofCokingWastewaterTreatmentbyTwo-stageBiologicalProcessofAO+OAO+FentoninIndustrialParkHANXiao-gang1,2,HANLi-hui3,CHENXing1,4,GAOYing-xin1,2,YANGMin1,2(1.StateKeyLaboratoryofEnvironmentalAquaticChemistry,ResearchCenterforEco-EnvironmentalSciences,ChineseAcademyofSciences,Beijing100085,China;2.UniversityofChineseAcademyofSciences,Beijing100049,China;3.TangshanZhongkeGreenEnvironmentalTechnologyCo.Ltd.,Tangshan063000,China;4.InstituteofIndustryandEquipmentTechnology,HefeiUniversityofTechnology,Hefei230009,China)Abstract:Accordingtotheproblemthateffluentof5000m3/dcokingwastewatertreatmentprocesscouldhardlyreachthestandardinindustrialpark,theprocessmodeof“front-endplantpre-treatmentwithAO-back-endparktreatmentwithOAO+Fentonadvancedtreatment”wasadoptedforthefirsttime.Asaresult,theimpactingresistanceoftheprocesswasenhancedgreatly,andthequalitystandardofwaterforcokequenchingwasreachedsteadily.Theoperationofprojectshowedthatthetwo-stagebiologicaltreatmentmodehadsolvedtheproblemthattraditionalcokingwastewaterbiologicaltreatmenttechnologywasimpactedeasily.ThefinaleffluentindexessuchasCOD,NH+4-NandTNwerereducedto20-30mg/L,<2mg/Land<10mg/L,respectively.Theremovalrateswereupto99%,98%and95%respectively.Meanwhile,effluentCOD,NH+4-N,TN,TP,cyanides,sulfides,phenolsandoilswereconsiderablylowerthanthedirectdischargecriteriaspecifiedintheEmission·35·第35卷第2期2019年1月中国给水排水CHINAWATER&WASTEWATERVol.35
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