城市生活垃圾和污水处理厂剩余污泥混合发酵的原料配比优化研究  

Optimization on proportion of municipal solid waste and sewage treatment plant sludge for mixed anaerobic fermentation

作　　者：刘建伟[1] 夏雪峰[1] 周晓[1] 

机构地区：[1]北京建筑大学环境与能源工程学院,北京市可持续城市排水系统构建与风险控制工程技术研究中心,北京应对气候变化研究和人才培养基地,北京100044

出　　处：《环境污染与防治》2015年第7期1-5,共5页Environmental Pollution & Control

基　　金：国家科技支撑计划项目(No.2012BAC25B03);住房与城乡建设部科学技术项目(No.2011-K6-5);北京市属高等学校青年拔尖人才培育计划项目(No.CIT&TCD201404077)

摘　　要：以城市生活垃圾和污水处理厂的剩余污泥为混合原料,研究了混合原料的不同配比对厌氧发酵过程及产气的影响。结果表明:城市生活垃圾与剩余污泥以挥发性固体(VS)质量比为2∶1混合后,厌氧发酵效果最好,累计产气量最高,达到8 721mL,发酵后的总固体(TS)、VS、COD去除率分别达43.65%、35.98%、47.88%;各实验组在发酵过程中的pH、氨氮浓度和碱度均在合理范围内,未对厌氧发酵反应造成影响;以适当配比的城市生活垃圾和剩余污泥为混合原料,进行中温联合厌氧发酵是可行的,联合厌氧发酵可以弥补单一原料的缺陷,在一定程度上改善厌氧发酵效果。Municipal solid waste and sewage treatment plant sludge were chosen as raw materials,and the influ- ences of different ratios of mixed materials to mixed anaerobic fermentation as well as biogas production efficiency were studied. Results showed that anaerobic fermentation efficiency of mixed materials was the best when the volatile solid （VS） ratio of municipal solid waste and sewage treatment plant sludge was 2 ： 1,while cumulative biogas production was the highest and upped to 8 721 mL.After fermentation,the total solid （TS）,VS and COD removal rates were 43.65%, 35.98%, and 47.88%.pH, ammonia nitrogen concentration and alkalinity of each group in the process of fermentation were within a reasonable range, and the anaerobic fermentation reaction were not affected. Mixed anaerobic fermentation with an appropriate ratio of municipal solid waste and sewage treatment plant sludge in normal temperature were feasible, it could overcome the defect of single raw material and improved the effect of anaerobic fermentation in some extent.

关 键 词：城市生活垃圾 剩余污泥 厌氧发酵 

分 类 号：X703[环境科学与工程—环境工程] X799.3