采用CTB工艺提高污泥热值的工程实例研究  

Engineering Case Study on Improvement of Sludge Calorific Value by CTB Technology

作　　者：蔡璐[1] 陈同斌[1] 高定[1] 刘洪涛[1] 郑国砥[1] 杜伟 

机构地区：[1]中国科学院地理科学与资源研究所环境修复中心,北京100101 [2]北京中科博联环境工程有限公司,北京100080

出　　处：《中国给水排水》2010年第19期103-105,共3页China Water & Wastewater

基　　金：国家科技支撑计划项目(2007BAD87B01);北京市科技计划项目(Z09040900930903)

摘　　要：：采用智能控制高温好氧生物发酵工艺（CTB工艺）对脱水城市污泥进行生物干化处理，使污泥的含水率从80％降到45％，并且干化后物料的热值比原污泥增加了2．7％～14．0％。若用于焚烧，可使系统的净能量由干化前的亏损状态提高到4500kJ／kg以上，污泥的挥发性固体含量与热值呈显著正相关。从能量平衡的角度考虑，采用生物干化工艺处理脱水污泥，提高了焚烧过程的净能量，解决了脱水污泥直接焚烧的能量亏损问题。The control technology for biocomposting （CTB） was used for bio-drying treatment of dewatered sewage sludge to decrease water content from 80% to 45% , the calorific value of dried sam- ples is increased by 2.7% to 14.0% , and the net energy of combustion system is increased from a loss state to more than 4 500 kJ/kg. There is a significant positive correlation between the volatile solid con- tent and calorific value of sewage sludge. By considering the energy balance, the bio-drying process for treatment of dewatered sludge can improve the net energy of combustion system and solve the problem of energy loss from direct incineration of dewatered sludge.

关 键 词：城市污泥 好氧生物发酵 生物干化 CTB工艺 

分 类 号：X703[环境科学与工程—环境工程]