好氧颗粒污泥SBR工艺处理避孕药生产废水_李巍

好氧颗粒污泥SBR工艺处理避孕药生产废水李巍1,纪树兰2(1.天津渤海职业技术学院环境工程系,天津300402;2.北京工业大学环境与能源工程学院,北京100124)摘要:将以葡萄糖为碳源培养的好氧颗粒污泥接种于序批式间歇反应器(SBR),经过驯化后用于处理避孕药生产废水,取得了良好的效果。处理过程分为去除有机物和脱氮两个阶段,考察了不同运行参数对两个阶段处理效果的影响。结果表明,在第一阶段中,当曝气量≥0.3m3/h时,对COD的去除率在2h内即可达到90%以上,而且能够保证水体中有充足的溶解氧。在第二阶段,对氨氮的去除率随运行周期的延长而增大,当运行周期为22h时,对NH3-N的去除率达到98%以上,亚硝态氮积累率为92%以上。在最佳运行参数下,系统出水COD、NH3-N和NO-2-N分别为(150～200)、(2～9)、(90～110)mg/L,对COD、NH3-N和TN的去除率分别稳定在90%、96%和50%以上,而亚硝态氮的积累率为97%左右,短程硝化效果明显。关键词:好氧颗粒污泥;SBR工艺;避孕药生产废水中图分类号:X703文献标识码:C文章编号:1000-4602(2010)11-0145-04基金项目:北京自然科学基金资助项目(8042007)AerobicGranularSludgeSBRProcessforTreatmentofContraceptiveWastewaterLIWei1,JIShu-lan2(1.DepartmentofEnvironmentalEngineering,TianjinBohaiVocationalandTechnicalCollege,Tianjin300402,China;2.CollegeofEnvironmentalandEnergyEngineering,BeijingUniversityofTechnology,Beijing100124,China)Abstract:TheaerobicgranularsludgecultivatedbyglucosewasinoculatedinSBRandusedtotreatcontraceptivewastewaterafteracclimation,withanexcellenteffect.Thetreatmentprocesswasdi-videdintotwostages,oneforremovaloforganicmatterandotherfornitrogenremoval.Theinfluenceofdifferentoperationparametersonthetreatmentefficiencyinthetwostageswasinvestigated.Theresultsshowthatinthefirststage,whentheaerationrateisequaltoormorethan0.3m3/h,theremovalrateofCODcanreachmorethan90%within2h,andenoughdissolvedoxygen(DO)canbeensuredinwater.Inthesecondstage,theremovalrateofammonianitrogenisincreasedwiththeprolongationoftheopera-tioncycle.Whentheoperationcycleis22h,theremovalrateofammonianitrogenismorethan98%,andtheaccumulationrateofnitritenitrogenismorethan92%.Undertheoptimaloperationparameters,COD,ammonianitrogenandnitritenitrogenintheeffluentare150to200mg/L,2to9mg/Land90to110mg/Lrespectively,theremovalratesofCOD,ammonianitrogenandTNare90%,96%and50%respectively,whiletheaccumulationrateofnitritenitrogenis97%,showinganobviousshort-cutnitrifi-·145·第26卷第11期2010年6月中国给水排水CHINAWATER＆WASTEWATERVol.26No.11Jun.2010cationeffect.Keywords:aerobicgranularsludge;SBRprocess;contraceptivewastewater避孕药生产废水是一