小红门污泥热水解厌氧消化项目运行两周年之回顾  

Review of Biennial Operation of Xiaohongmen Thermal Hydrolysis Anaerobic Digestion System

作　　者：宋晓雅[1] SONG Xiao-ya(Beijing Drainage Group Co.Ltd.,Beijing 100044,China)

机构地区：[1]北京城市排水集团有限责任公司,北京100044

出　　处：《中国给水排水》2018年第22期116-122,共7页China Water & Wastewater

摘　　要：小红门热水解厌氧消化系统,是国内首个采用康碧热水解+厌氧消化工艺的大型污泥升级改造工程。通过回顾两年的实际运行情况,全面总结了热水解、厌氧消化、板框脱水的生产和技术指标,并与主要设计值进行对比。热水解处理后的污泥含水率稳定,镜检显示活性污泥破壁效果明显,消化产气量、有机物分解率、板框脱水后泥饼含水率等指标均优于设计指标。沼气品质较好,但厂内利用有限,需进一步考虑沼气的综合利用问题。同时,针对除渣、除砂装置运行效率低,热水解系统稀释水用量较多等问题,提出优化建议。sludge upgrading Xiaohongmen thermal hydrolysis anaerobic digestion system was the first large-scale project in China which adopted Cambi thermal hydrolysis anaerobic digestion process. By reviewing two years of operation, the operation indexes of project, such as thermal hydrolysis, anaerobic digestion, plate and frame filter, were summarized and compared with the design values. The moisture of sludge treated by thermal hydrolysis was stable and the cell-wall breaking effect was obvious under microscopy. The indexes of digestion gas yield, organic matter decomposition rate and moisture content of cake after dehydration by plate and frame filter were all better than the design indexes. The quality of biogas was good, however, the utilization of biogas plant was limited at present, so the comprehensive u- tilization of biogas should be further considered. At the same time, the problems in actual operation were summarized, and the optimization suggestions were put forward in view of the low operation efficiency of the slag removal, sand removal devices and the large amount of dilution water in the thermal hydrolysis system.

关 键 词：污泥处理 热水解 厌氧消化 板框脱水 沼气利用 

分 类 号：TU992[建筑科学—市政工程]