连续微滤用于钢铁厂废水处理的生产性测试
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2020-04-17 11:35:03
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第33卷第4期2010年4月弘绣尉敢EnvironmentalScience&TechnologyVo1.33No.4Apr.2010连续微滤用于钢铁厂废水处理的生产性测试唐运平,许丹宇,张志扬,庞维亮,柴树满z(1.天津市环境保护科学研究院,天津300191;2.天津荣程钢铁集团,天津~300352)摘要:采用国产连续微滤膜(cFM)系统对多源进水条件下钢铁污水处理厂生物处理出水进行深度处理,通过现场实测其进出水水质和性能参数,分析了该系统对钢铁废水生化二级出水的水质处理效果及其运行状况,结果表明:连续微滤膜(CVM)系统运行稳定,具有较强的耐污能力,对水中COD平均去除率约为19.6%,ss平均去除率约为72.7%,总氮和总磷的去除率随进水水质变化波动较大,通过该系统膜的截留作用可有效去除水中COD、悬浮物、胶体和有机颗粒,能够使水质满足多用途回用和反渗透预处理要求。河流划分为容量型、点源污染型、农业面源型和混合型等四种类型。建议对不同类型河流应采取不同控制对策,点面结合,综合防治。系统每3-5周左右进行化学反洗后,膜通量与跨膜压差等膜性能参数可基本恢复至起始水平。关键词:钢铁厂废水;循环式活性污泥法;絮凝沉淀;连续微滤膜;再生回用中图分类号:X703.1文献标志码:Adoi:10.3969/j.issn.1003—6504.2010.04.029文章编号:1003—6504(2010)04-0126—04TestofContinuousMicro-filtrationSystemUsedinIronandSteelPlantWastewaterTreatmentTANGYun-ping,XUDan-yu,ZHANGZhi-yang,PANGWei—liang.CHAIShu-man2(1.TianjinEnvironmentalScienceAcademy,Tianjin300191,China;2.TianjinRongchengIronandSteelGroup,Tianjin300352,China)Abstract:Continuousmicro-filtrationmembranesystem(CFM)wasusedintreatmentofironandsteelplantwastewaterforadvancedtreatmenttodealwitheffluentfrombiologicaltreatment.Throughon—sitemeasurementofwaterqualityandoperatingparametersinthesystem,runningstatusofthetreatmenteffectintheironandsteelplantwastewaterwasanalyzed.ResultsshowedthatCFMhasstrongpollution—resistantcapabilities,highefficiencyandstablymtming,withaverageremovalrateofCODinwaterabout19.6%andaverageremovalrateofSSabout72.7%.Withwaterquali~changes.therearegreaterfluctuationsinremovalrateoftotalnitrogenandtotalphosphorus.Throughretainroleofmembranesystem,COD,suspendedsolids,colloidalandorganicparticlesCanbeeffectivelyremovedtomeetrequirementofmulti-purposereuseandreverseosmosispre-processing.Membranesystembegantochemicalcleaninginevery3to5weeks,andmembraneperformanceparameterssuchasmembraneflux,transmembranepressurecanbebasicallyrestoredtoinitialleve1.Keywords:ironandsteelplantwastewater;cyclicactivatedsludgetechnology:flocculationsettlement;continuousmicro—filtrationmembrane;reclamationandreuse工业污水再生利用是缓解水资源紧张、降低环境污染的有效途径o目前离子交换、电吸附、臭氧氧化和电渗析等方法均存在投资过大或运行成本偏高
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