污水污泥高温与中温厌氧消化对比研究  

Comparative performance of thermophilic and mesophilic anaerobic digestion for sewage sludge

作　　者：张辰[1] 王磊[1] 谭学军[1] 王逸贤[1] 

机构地区：[1]上海市政工程设计研究总院(集团)有限公司,上海200092

出　　处：《给水排水》2015年第8期33-37,共5页Water & Wastewater Engineering

基　　金：国家水体污染控制与治理科技重大专项(2013ZX07315-003);上海市环保科研项目(沪环科(2013-01));上海市国际科技合作项目(14230700400);上海市科技人才计划项目(15XD1522800)

摘　　要：研究了不同HRT条件下污泥高温（50℃）厌氧消化效果,并与中温（35℃）厌氧消化效果进行对比分析。结果表明,与中温条件相比,高温厌氧消化对有机物的去除率显著提高;高温厌氧消化沼气产量高于中温,但沼气产率差异并不明显（1.13～1.25L/gVS去除）;高温和中温厌氧消化系统运行稳定性良好,挥发酸/碱度比值仅为0.02～0.03;高温和中温厌氧消化出泥的毛细吸水时间（CST）均增加,并且高温消化污泥的CST高于中温消化污泥,厌氧消化过程可能导致污泥脱水性能变差。The performances of thermophilic（50℃）and mesophilic（35℃）anaerobic digestion reactors were compared under various HRTs using sludge as the subtract.The thermophilic reactors showed much more effective organic deduction and biogas production than the according mesophilic reactor;however,their biogas yield ranged between 1.13 and 1.25L/gVSremovedand little difference was observed.All the reactors showed satisfying operating stability with the ratio of VFA and alkalinity slightly ranged between 0.02 and 0.03.Both the thermophilic and mesophilic anaerobic digestion led to the increasing CST,which indicated that anaerobic digestion might have a negative impact on the dewatering capability of sludge.

关 键 词：污水污泥 厌氧消化 中温 高温 沼气产率 毛细吸水时间(CST) 

分 类 号：X703[环境科学与工程—环境工程]