8生物反应器中投加含硅聚铁混凝剂的协同作用研究(1)

4结论通过实验发现,采用浮选方法以十二烷基苯磺酸钠为捕集剂,对水溶液中的阳离子染料结晶紫具有很好的去除效果。SDBS的投加量、浮选时间是影响浮选效果的主要因素。微量的乙醇对浮选过程中起着控制气泡大小的作用,而pH值的影响不大。在适宜的条件下,结晶紫的去除率几乎达100%。由于该方法操作简便,去除率高,成本低廉,在染料废水处理技术方面具有潜在的应用前景。需要解决的主要问题是浮上液面的泡沫的处理,对此还有待进一步研究。References(参考文献):[1]LuoYuyan(罗钰言).PresentsituationandmeasuresoftechnologyanddevelopmentofChina'sdyestuffindustry[J].FineChemicals(精细化工),1996,13(1):6～9[2]ZhangJiwu(张继武),ZhangQiang(张强),ZhuYouyi(朱友益),etal.Presentsituationandprospectsofpurificationofoilywastewaterwithflotationtechnique[J].Filtrationandseparation(过滤与分离),2002,12(2):8～11[3]ZhangJiwu(张继武),ZhangQiang(张强)andWangHuajun(王化军).Progressofflotationtechniqueanditsapplicationofoilywasterwater[J].EnvironmentalProtectioninPectrochemicalIndustry,2003,26(1):12～16[4]HeXingcun.Ionflotationofrhodium(Ⅲ)andpalladium(Ⅱ)withanionicsurfactants[J].Talanta,1991,38(3):319～323[5]HeXingcun.Recoveryofsilverfromthioureasolutionbyionflotation[J].SepSciTechnol,1998,33(1):141～148StudyontreatmentofcationicdyecrystalvioletwastewaterbyflotationHEXing-cun,CHENMeng-lin,LANLiu-chun(DepartmentofResourcesandEnvironmentalScience,GuangxiNormalUniversity,Guilin541004,Guangxi,China)Abstract:Thispaperhaspresentedanewflotationmethoddevelopedbytheauthorforprocessingcationicdyewastewater.Firstofall,theauthormadeadetailedstudyontheinfluenceofsomefactorsontheflotationefficiency,suchastheeffectofvaryingthepHfrom3to10ontheflotationefficiency,andtheeffectofaddingethanolonthechangeoftheflotationrate,etc.However,itwasprovedthatthechangeofCVconcentrationhaslittleeffectonit.Thewholestudyhasbeendonebytakingtheanionicsurfactant,sodiumdodecylbenzenesulfonateasthemodel,whichisreadilyreactedwiththecrystalvioletcationtoformacolloidalprecipitate(sublate).Inourexperiment,SDBShastobepresentinatleast1.3molarratiotoCVwithanexcessofSDBSrequiredtoproduceastablefoamlayer.Theexperimentresultshowsthataddingasmallamountofethanol(0.05%—1.0%)tothesolutionmaypreventthecoalescenceoftinybubblesandincreasetheflotationrate.Nevertheless,thecoexistingions,suchasSO2-4,Cl-,NO-3,PO3-4,C