厌氧系统中碱处理对污泥减量的影响  

Effects of alkaline pretreatment on anaerobic digestion system

作　　者：谢敏[1,2] 欧双慧[1] 刘小波[1] 黄聪[1] 邓玉梅[1] 李美艳[1] 

机构地区：[1]长沙理工大学水利工程学院,长沙410114 [2]中国科学院生态环境研究中心,北京100085

出　　处：《环境工程学报》2014年第4期1637-1640,共4页Chinese Journal of Environmental Engineering

基　　金：国家自然科学基金资助项目(51108043);湖南省自然科学基金资助项目(12JJ3056);湖南省教育厅项目(13C1041)

摘　　要：碱解预处理污泥和原污泥按一定比例进行混合后,投入厌氧反应器中进行消化,研究其对污泥减量化的影响。结果表明,该处理既可以提高污泥减量率,又能改善污泥厌氧消化性能,提高污泥产气量。当碱处理污泥和原污泥混合比为1∶3时,在混合初期由于稀释作用和水解中和作用,溶液的pH能迅速恢复到中性。SS减少48%,较对照组提高了10%;SCOD减少约80%,较对照组提高20%,而空白对照组因未发生溶胞作用,各参数值均处于较低水平,降解率也维持在较低水平。The original and alkaline-treated sludge were mixed with a certain mixing ratio in an anaerobic digestion reactor and the effects of alkaline-treatment on sludge reduction were investigated in this work. The re- sults showed that the alkaline pretreatment could facilitate sludge redubtion,improve digestion performance, and enhance biogas generation,simultaneously. For the effect of dilution and hydrolysis-neutralization, the pH of ex- perimental group with the ratio of 1：3 returned to neutral quickly,while the reduction rate of SS was about 48% , compared with the raw sludge group increased by 10%. The reduction rate of SCOD was about 80% ,20% higher than the original sludge,the degradation rate of original sludge maintained at a low level since the concentration of other items was low without lysis effect.

关 键 词：碱处理 厌氧消化 污泥减量 混合比 

分 类 号：TU99[建筑科学—市政工程]