NBIAS中污泥龄对脱氮除磷效果的影响_罗固源

NBIAS中污泥龄对脱氮除磷效果的影响_罗固源收稿日期:1999-09-01作者简介:罗固源(1945—),男,教授,重庆建筑大学博士导师。·水污染防治·NBIAS中污泥龄对脱氮除磷效果的影响罗固源许晓毅(重庆建筑大学城市建设学院,重庆400045)摘要:探讨无回流间歇曝气系统(简称NBIAS),处理城市污水的污泥龄(SRT)对脱氮除磷及有机物去除效果的影响。通过原污水流程试验和人工合成污水静态模拟实验,试验结果表明:在水温为20℃～30℃,污泥负荷为0.25～0.45kgCODcr/kgMLSS·d,SRT为18～22d,HRT为8～10h时,利用原污水作为碳源,NBIAS在保持较高的CODcr去除率的同时,总氮和总磷的去除率均在80%以上。关键词:NBIAS;除磷脱氮;污泥龄(SRT)中图分类号:X703文献标识码:A文章编号:1001-2141(2000)02-0011-03EffectofSRTinNBIASonNitrogenandPhosphorusRemovalLuoGuyuan,XuXiaoyi(FacultyofUrbanConstructionofChongqingJianzhuUniversity,Chongqing400045)Abstract:ThisarticlediscussedtheeffectofSRTinNBIASontheremovalofnitrogen,phosphorusandorganicmatter.RawsewageflowtestandstaticimitatedtestofsyntheticwastewaterhavebeenstudiedundervariousSRT(6,10,20,30days).Theresultsshowedthat:SRTinNBIAShasanobviouseffectontheCODcr,nitrogen,particularlyphosphorusremoval.Withtheoperationconditionswhichwatertemperatureis20℃～30℃,sludgeloadingis0.25～0.45kgCODcr/kgMLSS·d,SRTis18～22days,HRTis8～10hours,usingtherawwastewaterascarbonsour