炼油废水提标改造思考和实践
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2020-03-02 18:54:51
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2020/2/24炼油废水提标改造思考和实践https://x.cnki.net/read/article/xmlonline?filename=jzjs201911020&tablename=CJFDTOTAL&dbcode=CJFD&topic=&fileSourceType=1&taskId=&fr…1/7给水排水,2019,11,87-91炼油废水提标改造思考和实践ApplicationanddesigningofupgradingandmodifyingwastewatertreatingplantinapetroleumrefineryYuWeiSinopec-SK(Wuhan)PetrochemicalCo.,Ltd.0引言余伟中韩(武汉)石油化工有限公司摘要:通过对现有污水处理稳定达标的分析,找出总氮、COD、氨氮等指标不能满足《石油炼制污染物排放标准》(GB31570-2015),隔油池、气浮池、二沉池进水泥水负荷不稳定,剩余活性污泥出路不畅等缺陷和运行问题,制定了新增后置反硝化、固定床生化,在线排泥代替日常清池清罐,单个二沉池运行代替多个二沉池运行,剩余活性污泥脱水等提标改造方案,同时也考虑了污水处理场受冲击泥法生化脱氨氮失效的异常情况的应对流程。投运后污水处理达标率100%。关键词:炼油废水提标改造总氮氨氮COD措施作者简介:余伟,E-mail:yuwei.zhsh@sinopec.com收稿日期:2019-09-05Abstract:Throughtheanalysisoftheexistingsewageyardstabilitystandards,wecanfindouttherequirementsthattheCOD,ammonianitrogen,totalnitrogenandotherindicatorscannotmeetEmissionstandardofpollutantsforpetroleumrefiningindustry(GB31570-2015),thedewateringofthecleartanksandthesecondsettlingtankintothecementwater,andtheremainingactivatedsludgearenotsmooth.Andoperationalproblems,thedevelopmentofnewpost-denitrification,newfixed-bedbiochemical,onlinesludgereplacementinsteadofdailyclearingtanks,singlesecondarysettlingtankoperationinsteadofmultiplesecondarytanks,residualactivatedsludgedewatering,etc.Thetransformationplanalsoconsiderstheresponseprocessoftheabnormalsituationofthesewagetreatmentplantbeingaffectedbythebiochemicaldeaminationofnitrogenbytheimpactmudmethod.Aftertheoperation,thesewagetreatmentcompliancerateis100%.Keyword:Petroleumwastewater,Upgradingandmodifying,Totalnitrogen,Ammonianitrogen,COD,MeasureReceived:2019-09-052020/2/24炼油废水提标改造思考和实践https://x.cnki.net/read/article/xmlonline?filename=jzjs201911020&tablename=CJFDTOTAL&dbcode=CJFD&topic=&fileSourceType=1&taskId=&fr…2/71改造前工艺简介2需要解决的问题及对策2.1无脱总氮流程2.2COD不能实现稳定达标炼油企业须满足《石油炼制污染物排放标准》(GB31570-2015)中的排放要求(见表1)。通过初步对标,发现目前的污水处理场的设施无法达标排放,必须提标改造才能实现稳定的达标排放。目前公司有2套污水处理系统,一套处理能力为400m3/h的低含盐污水处理系统,采用“二级隔油+二级气浮+一级泥法好氧生化+一级沉淀+接触氧化+深度处理+回用”的流程,处理污水主要为各装置机泵冷却水、脱硫净化水等低含盐污水,其中深度处理的处理能力为200m3/h,此单元出水回用作为循环水补充水,多余部
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