残余水处理药剂对循环水排污水处理中混凝的影响
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2020-03-21 09:44:37
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第33卷第9期2013年9月工业水处理Industrial晒ter乃atmentVo1.33No.9Seu.2013残余水处理药剂对循环水排污水处理中混凝的影响梁昌峰,刘芳,王飞扬,赵朝成(中国石油大学(华东)化学工程学院,山东青岛266580)[摘要]循环水排污水回用于补充水时受残余水处理药剂的影响。预处理中的混凝沉淀常达不到满意的效果。以氯化铝为混凝剂,聚丙烯酰胺为助凝剂,考察了十四烷基二甲基苄基氯化铵(1427)、氨基三亚甲基膦酸(ATMP)、羟基亚乙基二膦酸(HEDP)对混凝效果的影响。实验结果表明:残余水处理药剂会导致絮体变小且沉降性能变差.其中1427对浊度以及絮体沉降速度影响最大,HEDP对泥渣体积以及COD影响最大,ATMP对泥渣虚度影响最大:残余水处理药剂对混凝效果的影响程度与其在水中的浓度成正相关[关键词]循环水排污水;残余水处理药剂;混凝;杀菌剂;缓蚀阻垢剂[中图分类号]TU991.22[文献标识码]A[文章编号]1005—829X(2013)09—0041—05Efectofresidualwatertreatmentchemicalsonthecoagulationinthetreatmentofblow—downwaterfrOmcirculatingwatersystemLiangChangfeng,LiuFang,WangFeiyang,ZhaoChaocheng(CollegeofChemicalEngineering,ChinaUniversityofPetroleum(EastChina),Qingdao266580,China)Abstract:Whentheblow-downwaterfromcirculatingwatersystemisreusedasmake—upwater,thecoagulationsedimentationprocessisusuallyunsatisfactory.Whenaluminumchlorideisusedascoagulantandpolyacrylamideascoagulantaid,theeffectsoftetradecyldimethylbenzylammoniumchlorine(1427),AminoTrimethylenePhosphonicAcid(ATMP),and1一HydroxyEthylidene一1,1-DiphosphonicAcid(HEDP)onitcoagulatingeficacyhasbeenin—vestigated.Theexperimentalresultsshowthattheresidualwatertreatmentchemicalsmightcausetheflocstobe—comesmallerandsettlingpropertytobecomeworse.1427hasthegreatestinfluenceonturbidityandsettlingvelocityofthefloes,HEDPhasthegreatestinfluenceonsludgevolumeandCOD,andATMPhasthebiggestinfluenceonsludgecompressivedegrees.Theinfluencesofresidualwatertreatmentchemicalsoncoagulatingeficacyhaveapos—itivecorrelationrelationshipwiththechemicalconcentrationsinwater.Keywords:blow-downwaterfromcirculatingwatersystem;residualwatertreatmentchemicals;coagulation;fungi一从我国石化行业用水分布状况看.循环冷却用水约占生产用水的80%90%.循环冷却水系统的补[基金项目】中央高校基本科研业务费专项资金资助(11CX06047A).工.工I充水占企业新鲜水用量的30%~70%⋯。对循环水排污水进行适当除浊、除盐处理,回用为循环水补给20o7(4):509—5l1.[8]BenamarM,MohamedAD,DidierV.Medificationofbentonitewithdiphosphoniumsalts:synthesisandcharacterization[J].MaterialsLetters,2oo8,62(16):2493—2496.[9]吴玉勇.循环冷却水系统的复合阻垢缓蚀剂性能及缓蚀机理初探[D].浙江:浙江大学,2010.[10]陈敏,司荣,盖玉娟,等.油酸基眯唑啉类缓蚀
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