含油乳化废水处理的应用研究-上海市环境科学研究院.PDF

含油乳化废水处理的应用研究 吴晓弘 助 an划 盯 五nvironmental Sciences 含油乳化废水处理的应用研究 AnApplicationStudyonTreatmentofEmulsifiedOilWastewater 吴晓、(中国石油化工龄有限。司润滑油上海分公司，上海200439)叭了乃 WuXiaohong (LubricatingOilCompanyShanghaiBranchSINOPEC,Shanghai200439) 龚 慧 (上海市宝山区环境保护局，上海 201900) GongHui (EnvironmentalProtectionBureauofBaoshanDistrict,Shanghai,Shanghai201900) 摘要 简述了含油乳化废水常用的破乳工艺。以生产润滑油的某调合厂为实例.通过絮凝剂的筛选采用复合型破乳荆聚合硫酸 铝(PAS)作为架凝荆进行化学破乳工艺试验.设计了破乳、气浮、活性炭吸附处理及附加条件的5种试验。结果表明.聚合硫酸铝与阴离 子(非离子)复合型破乳剂能有效地对调合厂含油乳化废水进行破乳.每吨废水分别加500ml_的聚合硫酸铝(浓度为10%)和500rnL的 阴离子PAM(浓度为。.1%)，停留时间为5min即能完成破乳及油水分离过程.废水处理药剂费用为025元八左右.在原水Coo 2894mg/L时CO。去除率达到96.8%。经处理后的排放废水能够达到国家规定的排放标准。 关键词:含油乳化废水 破乳 复合型破乳剂 聚合硫酸铝 AbstractAconventionalemulsionbreakingtechnologyoftreatingemulsifiedoilwastewaterwasbriefed.Taking onelubricatingoilplantforexample,accordingtothescreeningofflocculants,polymericaluminiumsulphate(PAS), acompoundemulsionbreaker,wasusedasaflocculenttoconducttheexperimentforchemicalemulsionbreaking process.Fivesetsofexperimentweredesignedincludingemulsionbreaking,airfloatation,activatedcarbonadsorp- tion,andetc.IthasshownthatacompoundemulsionbreakerofPASandanioniGunionisedPAMcouldeffectively breaktheemulsifiedoilwastewater.Dosingof500mLof10%PASand500mLof0.1%anionicPAMrespectivelyinone cubicmetrewastewatercouldaccomplishtheprocessofemulsionbreakingandoil-waterseparatingbyaretentiontime of5minutes.Thereagentscostabout0.25RMByuanpercubicmetrewastewater.TheCODremovalratecouldreach 98%whilsttheinfluentstrengthwas2,894mg/LofCOD,andtheeffluentcouldgetincompliancewiththenational dischargestandard. Keywords:EmulsifiedoilwastewaterEmulsionbreakCompoundemulsionbreaker Polymericaluminiumsulphate(PAS) 投加化学药剂主要是改变乳化液的类型和界面 1 引言 性质，使其变得不稳定而发生破乳，工程上应用较为 含油乳化废水的处理是化工、机器制造业等常遇