高铁酸钠溶液处理焦化废水影响因素研究刘成伦

57Vol．5No．720117ChineseJournalofEnvironmentalEngineeringJul．201112111．4000442．400044pH、。pH950min、41.67mmol/L74.2%。pHNH42SO4。X703A1673-9108201107-1459-04ResearchoninfluencingfactorsincokingwastewatertreatmentbysodiumferritesolutionLiuChenglun1XuLongjun2DuXian1LüHuashan11．CollegeofChemistryandChemicalEngineeringChongqingUniversityChongqing400044China2．StateKeyLaboratoryofCoalMineDisasterDynamicsandControlChongqingUniversityChongqing400044ChinaAbstractTheworkwasperformedontreatingsimulatingcokingwastewaterdirectlyusingthesodiumfer-ratewhichwaspreparedwithelectrosynthesisintheNaOHsolution．TheeffectsofpHferratedosagereactiontimeonphenol’sdegradationratioofcokingwastewaterwereinvestigatedinthisstudy．TheresultsshowedthatthedisposingeffectwasthebestundertheconditionofweakalkalinityandtheoptimumpHvaluewas9．There-movalratesofphenolandNH3-Nwereimprovedgraduallywiththeincreaseofaddedferrate．Thephenolremovalratereached74.2%whenreactiontimewas50minandthedosageofferratewas41.67mmol/L．MoreovertheprecipitationofNH42SO4crystalduringtheadjustingpHprocesswithsulfateacidwasbeneficialtotheremovalofNH3-N．KeywordssodiumferratecokingwastewateroxidationflocculationCSTC2004AD70272010－03－082010－06－221963～、。[e-mail]2－4。pH＜212。FeO2－4。3-5。、、、67COD、8。9。pH、。11.1Spectrumlab22pc、。1011NaOH5。、。NaOHpH。855mg/L100mg/LNH4Cl305.6mg/LKCl9.6mg/LNa2S79.3mg/LNaHCO3。510nm-420nmCOD。pH7.7COD7540305.6mg/L。1．220mLpH。。、COD。pH、、、COD。2Fe2O3FeOH3FeOH3。。2．1pHFeⅥ/FeⅢ2.2V0.72V。20mL5150mLpH。pH1。1pH＜7pHpH967.6%1pHFig.1EffectofpHonremovalrateofphenolandNH3-Ninwastewater52.9%pH＞92。、。FeO2－4+10H2O=4Fe3++20OH－+3O2↑。FeO2－4FeOH3FeOH3。NH42SO4。pH=9。pHCOD2。2pH＜7CODpHpH=7pH。FeO2－4、CODCOD。pH306417pH9。2pHCODFig．2EffectofpHonremovalrateofCOD2.2pH920min、COD3～5。3Fig．3Effectofferratedoseonremovalrateofphenol4CODFig．4EffectofferratedoseonremovalrateofCOD318mmol/L41.7mmol/L5Fig．5EffectofferratedoseonremovalrateofNH3-N70.4%。12FeO2－4。FeO2－4。COD45FeO2－4。。2.3620mL305.6mg/L855mg/LpH=9C2－FeO418mmol/L。5min20min。41.7mmol/L、50min74.2%。6Fig．6EffectoftimeonremovalrateofphenolandNH3-N1641510。。BaCl213。pHNH42SO4。31。2pH918mmol/L10min。41.67mmol/L50min74.2%。pHNH42SO4。1JiangJiaqianBarryLloyd．ProgressinthedevelopmentanduseofferrateVIsaltasanoxidantandcoagulantforwaterandwastewatertreatment．WaterResearch20023661397-14082JiangaJiaqianAlexPanagoulopoulosMikeBaueretal．Theapplicationofpotassiumferrateforsewagetreatment．JournalofEnvironmentalManagement2006792215-2203MohammadAlsheyabJiangJiaqianCecileStanford．On-lineproductionofferratewithanelectrochemicalmethodanditspotentialapplicationforwastewatertreatmentAre-view．JournalEnvironmentalManagement20099031350-13564JiangJ．Q．ResearchprogressintheuseofferrateVIfortheenvironmentalremediation．JournalofHazardousMate-rials20071463617-6235．．20042439-1120GongLeiXuXiaojun．Technologiesofcokeplantwastewatertreatment．IndustrialWaterTreatment20042439-1120inChinese6．．20051524111-113ZhaiYaqinWangZengzhangWangXiaoying．Thetech-niquesfortreatingthecokingwastewater．Sci/TechInfor-mationDevelopment＆Economy20051524111-113inChinese7．．20013238-10YangYunlongBaiXiaoping．Advanceondisposaltechnolo-giesofcokingwastewater．IndustrialWater＆Wastewater20013238-10inChinese8．．20058164-166WangHongmeiZhengZhenhua．Reviewondiposalofco-kingwastewaterwithphysicalandchemicalmethods．Popu-larScience＆Technology20058164-166inChi-nese9．．200430136-38FanYaotingZhangJunLinLinetal．Applicationofferrateinthedecolourationofthecockingwastewater．TechnologyofWaterTreatment200430136-38inChinese10JanHivesMichaelaBenovaBouzekK．etal．Electro-chemicalformationofferrateVIinamoltenNaOH-KOHsystem．ElectrochemistryCommunications20061181737-174011HeWeichunWangJianmingYangChangchunetal．TherapidelectrochemicalpreparationofdissolvedferrateVIEffectsofvariousoperatingparameters．Electro-chimicaActa200651101967-197312NigelGrahamJiangChenchunLiXiangzhongetal．TheinfluenceofpHonthedegradationofphenolandchlorophenolsbypotassiumferrate．Chemosphere20045610949-95613．pH．2009262137-140YinPingWeiHongyuan．EffectofpHonthesolubilityandcrystallizingmetastablezoneofammoniumsulfate．ChemicalIndustryandEngineering2009262137-140inChinese2641