摘要
采用强制通风堆肥工艺对团岛污水处理厂消化污泥进行堆肥化处理。通风系统采用时间和温度联合自动化控制,在消化污泥和木屑的体积配比为1∶1的情况下,堆肥温度能够顺利地达到设定温度(60℃),并维持在3 d以上,堆肥高温使大肠菌群的数量级由107降到102,达到了国家高温堆肥标准。温度、含水率、有机质、pH等参数的监测表明堆肥过程能顺利进行。第41天种子发芽指数达到了93.74%,表明堆肥已消除植物毒性,达到了完全腐熟。
The forced aeration composting technique was used for composting of digested sludge from Tuandao Sewage Treatment Plant, and the air blower of the composting equipment was controlled by both time and temperature controller. When the volumetric ratio between the digested sludge and the sawdust was 1 ： 1, the composting temperature could quickly rise to 60 ℃ and keep it more than three days. E. Coli, as a common indicator of pathogens in sludge, reduced greatly the order from 10^7 to 10^2 in the final examination of the compost. The variations of temperature, moisture, organic matter（OM） and pH with time showed the composting could be successfully processed. The cress seed germination index（GI）, used as indicator of phytotoxicity and maturation of compost, exhibited that the sludge compost was almost stabilized and mature near the 41^st day of the composting when 93.74 % of GI were obtained.
出处
《中国海洋大学学报（自然科学版）》
CAS
CSCD
北大核心
2008年第5期828-832,共5页
Periodical of Ocean University of China
基金
国家自然科学基金项目(20507016)
山东省自然科学基金项目(Y2006B33)资助
关键词
强制通风
堆肥
消化污泥
大肠菌群
发芽指数
forced aeration
composting
digested sludge
E. Coli
germination index
