SONG Xiao-ya.Review of Biennial Operation of Xiaohongmen Thermal Hydrolysis Anaerobic Digestion System[J].China Water & Wastewater,2018,34(22):116-122.
小红门污泥热水解厌氧消化项目运行两周年之回顾
- Title:
- Review of Biennial Operation of Xiaohongmen Thermal Hydrolysis Anaerobic Digestion System
- 文章编号:
- 1000-4602(2018)22-0116-07
- Keywords:
- sludge treatment; thermal hydrolysis; anaerobic digestion; plate and frame filter dewatering; biogas utilization
- 分类号:
- TU992
- 文献标志码:
- C
- 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。
- Abstract:
- Xiaohongmen thermal hydrolysis anaerobic digestion system was the first large-scale sludge upgrading 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 utilization 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.
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备注/Memo
作者简介:宋晓雅(1971- ), 女, 河北石家庄人,大学本科, 教授级高级工程师, 先后参与高碑店、小红门、槐房、高安屯等消化系统的启动调试, 参与高碑店、延庆康庄、小红门再生水等污水和再生水系统的调试运行工作。
E-mail:songxy@bdc.cn
收稿日期:2018-08-16