混合污泥中温两相厌氧消化中试的启动试验  

Start-up experiment of pilot-scale mesophilic two-phase anaerobic digestion of mixed sludge

作　　者：尹军[1] 赵纯广[1] 张立国[2] 

机构地区：[1]吉林建筑工程学院市政与环境工程学院,吉林长春130021 [2]哈尔滨工业大学市政环境工程学院,黑龙江哈尔滨150090

出　　处：《中国环境科学》2008年第12期1100-1104,共5页China Environmental Science

基　　金：吉林省重大科技项目(20040405-1)

摘　　要：在小试基础上,以北方城市污水处理厂混合污泥为处理对象,研究了中试规模中温(35℃)两相厌氧消化工艺的启动性能及运行效果.结果表明,在启动过程中,初沉污泥与剩余污泥按1:1比例混合有助于提高处理效率;当水力停留时间(HRT)为10d,VS容积负荷为2.15kg/(m3·d)时,系统VS去除率达36%左右,相应产甲烷相的比产甲烷活性(SMA)约为0.31L/(g·d);系统运行约60d,产酸相VFA浓度稳定在1600～2000mg/L.经产甲烷相消化后,VFA浓度稳定在300～500mg/L;产甲烷相pH值保持在6.8～7.2,有利于产甲烷菌生长.Based on the laboratory scale experiment and mixed sludge from municipal wastewater treatment plant（WWTP） in the north of China, the start-up and operation efficiency of pilot-scale mesophilic（35℃） two-phase anaerobic digestion of mixed sludge were examined. The ratio of 1：1 for primary sludge and waste sludge was favorable to increasing the digestion efficiency during the start-up. The volatile solid （VS） removal efficiency was 36% when the influent organic loading rate （OLR） was held at 2.15 kg/（m^3·d） and the total hydraulic retention time （HRT） was 10 days. Correspondingly, the specific methanogenic activity （SMA） for methanogenic phase was 0.31 L/（g·d）. During the operation time of 60 days, the volatile fally acid （VFA） concentration in acidogenic phase stabilized in the range of 1600 to 2000 mg/L, and that in the methanogenic phase stabilized in the range of 300 to 500mg/L. The pH value of methanogenic phase was between 6.8 and 7.2, which was favorable for the growth ofmethanogenic microorganism.

关 键 词：污泥 两相厌氧消化 比产甲烷活性 中试 启动 

分 类 号：X703.1[环境科学与工程—环境工程]