不同来源高浓度有机废水的集中处理

74Vol．7No．420134ChineseJournalofEnvironmentalEngineeringApr．201312331*41．1000852．7100553．2000624．200065、、、5/Fen-ton//、Fenton//、/、//、。。120COD90%Fenton《》CJ343-2012。X703．1A1673-9108201304-1213-06CentraltreatmentofwastewaterwithhighorganiccontentfromdifferentindustrialsourcesZhangWeijun1GaoYa2MaShilong3ZhangMing3WangDongsheng1XuYueyang41．StateKeyLaboratoryofEnvironmentalAquaticChemistryResearchCenterforEco-EnvironmentalSciencesChineseAcademyofSciencesBeijing100085China2．SchoolofEnvironmentalandMunicipalEngineeringXi’anUniversityofArchitectureandTechnologyXi’an710055China3．SchoolofResourcesandEnvironmentalScienceEastChinaNormalUniversityShanghai200062China4．ShanghaiJihuiEnvironmentalProtectionTechnologyDevelopmentCo．Ltd．Shanghai200065ChinaAbstractHighcontentorganicwastewatersfromdifferentindustrialsourceswereclassifiedaswasteemulsionswithhighsuspendedsolidconcentrationbiorefractorywastewaterswithhighorganicloadinghighsuspendedsolidor-ganicwastewaterwithoutoilorganicwastewatercontainingchromiumemulsionswithlowsuspendedsolidcontentwhichweretreatedbyusingacidificationdemulsification/Fentonoxidation/coagulation/flocculationFentonoxida-tion/coagulation/flocculationcoagulation/flocculationreduction/coagulation/flocculationvibratingmembranere-spectively．Performanceofpretreatmentwasinvestigatedinbothlaboratoryexperimentsandfullscaleapplication．Re-sultsindicatedthatwaterqualityofindustrialwastewaterscouldbeimprovedsignificantlybyusingpretreatmenttech-nologiesandeffluentwasfitforfurtherbiologicaltreatment．Thebiologicalprocesshasoperatednormallyfor120daysmorethan90%ofCODcouldberemoved．ThefinaleffluentcouldmeettheWaterQualityStandardsforDis-chargetoMunicipalSewersCJ343-2012aftertreatmentbyFentonreagentatlowdosage．Keywordsindustrialwastewaterphysicochemicalpretreatmentstabilityofbiologicalsystemcentraltreatment5113808510082932012－02－232012－06－131986～。[e-mail]*[e-mail]、、1。、、2。。7、、。、、。pHpH、。/3。、、4。FentonOH·56、7、89、1011。。12-14。。、。。11．11．1．1重金属离子HI93749。、、。1．1．2常规指标pH、SS———、COD———XD-2003COD、TN———、TP———。1．2。1．2．1混凝/絮凝2%10%PAC200r/min15s50r/min5min。1%0．1%PAM200r/min15s50r/min5min。30minCOD、SS。1．2．2Fenton氧化/混凝pH310%30%0．052hCaOH2pH71．2．1/。30minCOD。1．2．3震动膜小试p。UF-19。p。2cm138kPa50s－1。1．2．4还原/混凝。pH35∶15minpH7。1．2．1/、COD。1．2．5酸化破乳/芬顿氧化/混凝pH3。1．2．2Fenton1．2．1/。30minCOD。1．3CODBOD5。Zahn-Wellens。pH7COD412141000mg/LC∶N∶P=200∶5∶1、500mL1L5dCOD。B=COD0－CODn/COD0n≤50．3。22．11。、、、。。/。/。。/Fenton/。Fenton/。。1Fig．1Classificationofphysicochemicalpretreatmenttechnologiesaccordingtowaterqualityofindustrialwastewaters2．21。、、。B0．03。COD99．9%80%B0．38。COD90%。FentonCOD91%。FentonB0．60。2．32。512171Table1Resultsoflaboratory-scaletestsfortreatmentofvariousindustrialwastewaterspHCODmg/LpHCODmg/LB/—7．59800—7．418000．63—19．330560—9．196400．55—26．675750—6．314500．55—35．338700—5．2299000．69—46．818300—6．7131900．36—6．313050—6．293400．81—7．111650—7．011500．60—/—7．57000～9800Cr6+60mg/L、B0．037．52200～40000．38Cr6+0．11mg/L1——Fe2+5．1g/L————16．5162200—6．7228250．74—25．963450—6．043600．41—36．213560—6．37000．61—48．1272800—7．9204000．47—57．1167400—7．2104000．88—//29．1345000—7．5315000．56—/35．117100Cu2+20mg/LCd2+5．4mg/LPb2+4．3mg/LB0．087．580950．60—47．2～8．0720B0．057．53100．4—16∶12pH330%2%0．053pH330%2%0．054pH330%0．2%0．05。2Fig．2Processflowchartofcentraltreatmentofindustrialwastewaters、。Fenton3h。Fenton20m3。//Fenton30min/15min。/2h。6121418470t/d。80t/d//A/A/O。、16cm80%24、2448h。。2．440～50t/d。2．4．1各预处理技术的运行情况2。COD。COD10000mg/L。2．4．2生化系统的运行情况3。COD2000～10000mg/L。10t20d40～50t/d。COD600～700mg/L。2mg/L。。。2Table2Effectofphysicochemicalpretreatmenttechnologiesinpracticalapplication1t/dpHCODmg/LpHCODmg/LB18～227～93500～79000—7～9350～31000＞0．5—55～71300～35900Cr6+20～65mg/L7．5350～6540＞0．45Cr6+0．08～0．15mg/L36～841900～345000—6～88420～11680＞0．6—10～156～1019240～162200—6～101150～9600＞0．4—0．5～15．117100B0．057．59100＞0．56—1。3Fig．3Performanceofbiologicaltreatmentprocessinpracticalapplication2．4．3二沉池出水的补充处理COD600～900《》CJ343-2012。30%0．2%712170．05COD300～400mg/LB0．35～0．42。31、。2。COD。3、COD90%。120。《》CJ343-2012。1．．20032SipmaJ．OsunaM．B．EmanuelssonM．A．E．Biotreatmentofindustrialwastewatersundertransient-stateconditionsProcessstabilitywithfluctuationsoforganicloadsubstratestoxicantsandenvironmentalparameters．CriticalReviewsinEnvironmentalScienceandTechnology2010402147-1973ShonH．K．VigneswaranS．SnyderS．A．Effluentor-ganicmatterEfOMinwastewaterConstituentseffectsandtreatment．CriticalReviewsinEnvironmentalScienceandTechnology2006364327-3744WangL．K．HungY．T．ShammasN．K．AdvancedPhysicochemicalTreatmentProcesses．NewJerseyHuma-naPressInc．2006．483-4855NeyensE．BaeyensJ．AreviewofclassicFenton’sper-oxidationasanadvancedoxidationtechnique．JournalofHazardousMaterials2003981-333-506PignatelloJ．J．OliverosE．MacKayA．Advancedoxi-dationprocessesfororganiccontaminantdestructionbasedontheFentonreactionandrelatedchemistry．CriticalRe-viewsinEnvironmentalScienceandTechnology20063611-847KitisM．AdamsC．D．DaiggerG．T．TheeffectsofFen-ton’sreagentpretreatmentonthebiodegradabilityofnonionicsurfactants．WaterResearch199933112561-25688ZimbronJ．A．ReardonK．F．Conti