AOBAF亚滤技术深度处理针织印染废水研究卢徐节副本

73--LuXujieYangBoChenJihua(CollegeofEnvironmentalScienceandEngineering,DonghuaUniversity,Shanghai200051)/```/AbstractWastewaterfromprintinganddyeinghasbecomeoneofdifficultproblemsandfociintradewaste-watertreatmentowingtoitshighcolourity,variablestrengthandpoorbiodegradability.TheharmfulnessofsuchakindofwastewaterandthescarcityofwaterresourcesinChinawerereviewed.Astudyinpilot-scalefacilitytohandle300m3perdaywasconductedonadvancedtreatmentofknittingprintinganddyeingwastewaterbyaprocessofhydrolysisacidification-biologicalcontactoxidation-biologicalaeratedfilter-sub-filtertechnology(A/O/BAF/sub-filtertechnology).TheinvestigationhasindicatedthatCODCr,colourityandturbidityintheefflu-entkeptstableatthelevelsoflessthan50mg/L,2timesand1NTU,respectively,eveniftheinfluenthadfluctuatedwithincertainranges.Afteroverthreemonths'runningoftheprocess,ithasshownthattheremovalefficienciesofCODCr,colourity,turbidityreached91%,95%and96%,respectively,ontheaverageandtheeffluentwasincompli-ancewiththedomesticgraywaterstandard(CJ25.1-89).Thetreatedeffluentcouldsatisfythewaterqualityrequire-mentforprintinganddyeingprocessing.Thisprocessshowedadvantagessuchaslessresidualsludge,strongershockloadendurance,andhigherefficienciesofremovingcolourity,turbidityandrefractoryorganics.Thepilot-scaletesthasrevealedthatthisprocesswasstableinperformance,simpleinoperation,andeasyinmanagement,soastoprovideareferenceforitsindustrialscaleapplicationtotheadvancedtreatmentoftextilewastewater.Keywords:HydrolysisacidificationBiologicalcontactoxidationSub-filtertechnologyKnittingprintinganddyeingwastewaterDeeptreatmentReclaimedwater74757681