A_A_2O工艺在泰安市污水处理厂的应用

A_A_2O工艺在泰安市污水处理厂的应用A+A2O工艺在泰安市污水处理厂的应用陈凌霞,魏峰,徐志伟(泰安市城市排水管理处,山东泰安271000)摘要:结合泰安市污水处理厂多年的实际运行情况,总结分析了A+A2O工艺对COD、SS、TN、TP的去除效果。实践表明,A+A2O工艺对COD、SS去除率高,但在进水BOD5值较低而SS值偏高的情况下,很难使氮、磷的去除效果同时达到最佳,若根据要求侧重一个方面,则效果更好。关键词:A+A2O工艺;脱氮除磷;SS中图分类号:X703.1文献标识码:C文章编号:1000-4602(2005)12-0083-03ApplicationofA+A2OProcessinTai’anCityWastewaterTreatmentPlantCHENLing2xia,WEIFeng,XUZhi2wei(Tai’anUrbanWastewaterManagementBureau,Tai’an271000,China)Abstract:BasedontheactualoperationforseveralyearsinTai’anWastewaterTreatmentPlant,theremovaleffectofA+A2OprocessonCOD,SS,TN,andTPwassummarized.ThepracticeshowsthattheprocesshasahighremovalrateforCODandSS.However,itisdifficulttoachievetheoptimalremovalratefornitrogenandphosphorusundertheconditionoflowerinfluentBOD5andhigherinfluentSS,butthefavorableeffectcanbeobtainediflayingparticularstressoneithernitrogenorphosphorusre2moval.Keywords:A+A2Oprocess;nitrogenandphosphorusremoval;SSA+A2O工艺是在AB工艺的基础上对B段进行改进而成。A段通过生物吸附絮凝作用大幅度去除污染物质,特别是对SS的去除率较高,为高负荷段;A2O段由厌氧池、缺氧池、好氧池组成,可实现脱氮