作　　者： ; ;

机构地区： 五邑大学

出　　处： 《广东化工》 2011年第6期16-17,共2页

摘　　要： 考察了SRT分别为10 d和不排泥2种情况下MBR的运行效果和污泥特征的变化,研究结果表明,随着SRT的减小,比耗氧速率从不排泥时的10.2 mg O2/g SSh增加至SRT为10 d时的15.9 mg O2/g SSh,排泥有助于提高污泥的活性。不排泥运行和SRT为15 d两种情况的处理效果基本相同,去除效率均超过90%,继续提高氨氮负荷,M2出水NH4-N浓度增加,因此污泥停留时间应该根据不同的水质来设定。 The paper present an experimental study on the characteristics of the sludge in membrane bioreactor（MBR） operation at different sludge retention times（SRT）.2 laboratory-scale MBRs was operated at SRT of 15 days and non-discharge of sludge for treatment of municipal wastewater.The result showed with the reduce of SRT,the specific oxygen consumption rates of the sludge also increased the showed that discharge of sludge was contributive to the increase of the bioactivity of sludge.In the case of treating the municipal wastewater,the result of the treatment were almost at the same,when NH4-N loading rate continuous increased,the quality of effluent deteriorated in the case of 15 days SRT,so the SRT should be set by the wastewater quality.

关 键 词： 膜生物反应器 不同 污泥特征

领　　域： [化学工程]