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.
出处
《中国给水排水》
CAS
CSCD
北大核心
2008年第22期21-24,共4页
China Water & Wastewater
关键词
城市污水厂
污泥处理
厌氧消化
沼气
municipal wastewater treatment plant
sludge treatment
anaerobic digestion
biogas
