我国城市污水厂污泥厌氧消化系统的运行现状  

Current Operation Status of Sludge Anaerobic Digestion System in Municipal Wastewater Treatment Plants in China

作　　者：吴静[1] 姜洁[1] 周红明[1] 毕蕾[1] 

机构地区：[1]清华大学环境模拟与污染控制国家重点联合实验室,北京100084

出　　处：《中国给水排水》2008年第22期21-24,共4页China Water & Wastewater

摘　　要：对我国400余座城市污水厂污泥处理工艺的调查表明,目前采用污泥厌氧消化工艺的仅46家,主要采用浓缩/中温厌氧/脱水工艺,采用一级厌氧消化和二级厌氧消化的厂家数量接近,其中仅25家的污泥消化系统正在运行,沼气产量约为14×104m3/d,另有6家在调试。污泥厌氧消化工艺在实际应用中仍存在着较多亟待解决的问题,沼气产率低和利用率不高大大削弱了该工艺的优势。The results of the investigation on sludge treatment systems over 400 municipal wastewater treatment plants in China show that only about 46 plants have sludge anaerobic digestion systerns, most of which adopt thickening/mesophilic anaerobic digestion/dewatering process. About half of the plants have one-stage anaerobic digestion systems and the other half have two-stage anaerobic diges- tion systems. For the 46 plants, only 25 plants operate their anaerobic digestion systems and produce about 14 × 10^4 m^3 biogas/d, the other 6 plants commission their systems. There are some urgent problems for the sludge anaerobic digestion. The low biogas yield and utilization rate counteract some advantages of the sludge anaerobic digestion.

关 键 词：城市污水厂 污泥处理 厌氧消化 沼气 

分 类 号：X703.1[环境科学与工程—环境工程]