煤气废水处理及其污泥减量技术研究  

Study on Technology of Coal Gasification Wastewater Treatment and Sludge Reducing

作　　者：黄中子[1] 张文启[1] 张辉[1] 徐美燕[1] 

机构地区：[1]上海工程技术大学化学化工学院,上海201620

出　　处：《上海工程技术大学学报》2008年第4期291-294,共4页Journal of Shanghai University of Engineering Science

基　　金：上海市教育委员会重点科研项目(07ZZ158)

摘　　要：煤气废水为有毒废水,废水量大、有机物含量高.现行生物处理工艺存在运行不稳定、出水酚和化学需氧量(COD)高等问题,需要开发新型工艺.中试实验表明,新开发的白土活性污泥系统,固体停留时间和水力停留时间分别为25 d和24 h.污泥成长和沉降性能良好、运行稳定、抗冲击性强;采用延时曝气的方法,系统废水总酚和COD去除率均高达80%以上.同时,系统污泥产量也大幅度降低.Coal gasification wastewater is toxic, massive and high percentage of ogranics. The main disadvantages of present bio-treatment processes are low operation stability and not effective in removing the phenols and COD. Pilot-scale Baitu-activated sludge process was put forward for researching the efficiency of phenols and COD removal. After a 25 d mean cell residence time and 24 h total HRT, the new system was very stable and the efficiency of total phenols,and COD removal were more than 80 % respectively. The amount of residual sludge of the new system was also decreased.

关 键 词：煤气废水处理 生物处理工艺 剩余污泥 

分 类 号：X703.1[环境科学与工程—环境工程]