A_O_混凝沉淀_O组合工艺处理印染废水中试_徐灏龙

A_O_混凝沉淀_O组合工艺处理印染废水中试_徐灏龙A/O/混凝沉淀/O组合工艺处理印染废水中试徐灏龙,白俊跃,彭振华,王付超(国家环境保护水污染控制工程技术<浙江>中心,浙江杭州310007)摘要:采用A/O/混凝沉淀/O组合工艺处理棉布印染废水,考察了不同水力停留时间下,对COD、色度的去除效果。结果表明:当兼氧段停留时间为14h、好氧段停留时间为10.5h时,该工艺对印染废水中COD和色度的总去除率分别达到90%和92%以上,出水水质完全符合印染废水一级排放标准。关键词:印染废水;悬浮生物滤池;混凝沉淀中图分类号:X703文献标识码:C文章编号:1000-4602(2009)23-0099-03TreatmentofPrintingandDyeingWastewaterbyAnaerobic/Aerobic/CoagulationSedimentation/AerobicProcessXUHao-long,BAIJun-yue,PENGZhen-hua,WANGFu-chao(StateEnvironmentalProtectionEngineeringCenterforWaterPollutionControl,Hangzhou310007,China)Abstract:Theanaerobic/aerobic/coagulationsedimentation/aerobicprocesswasusedtotreatprintinganddyeingwastewater,andtheremovalefficienciesofCODandcolorunderdifferentHRTwereinvestigated.TheresultsshowthatthetotalremovalratesofCODandcolorcanreachmorethan90%and92%respectively,whentheanaerobicHRTis14handtheaerobicHRTis10.5h.TheeffluentqualityreachestheⅠ-gradedischargestandardoftheprintinganddyeingindustry.Keywords:printinganddyeingwastewater;suspendedbi