摘要
研究了城市污水厂污泥好氧堆肥过程中的重金属钝化规律.由蘑菇渣、磷矿粉、鸡粪、高温菌种与城市污泥组成的试验堆体在微生物作用下快速干化.经过30天的好氧堆肥,试验堆体稳定态铬的比例达到了67-80%,稳定态铜的比例达到了31-41%,稳定态镍的比例达到了49-57%,稳定态锌的比例达到了46-55%,稳定态锰的比例达到了56-64%,污泥重金属的生物活性和毒性减少.生成的复合有机肥施用于园林绿化.图5,表2,参5.
This paper studied the inactivation of heavy metal in the process of sewage sludge aerobic composting. Experiment stacks,which were made of mushroom residue,powdered rock phosphate,chicken manure,bacteria in high temperature and sewage sludge,dried fast under the effect of microbe. Proportions of steady-state chromium,copper,nickel,zinc,manganese respectively were 67 -80%,31 -41%, 49-57%,46-55%,56-64% after aerobic composting for 30 days. The biological activity and toxicity of sewage sludge decreased. The compound organic fertilizer was used in landscape. 5figs. ,2tabs. ,5refs.
出处
《湖南生态科学学报》
CAS
2015年第1期24-27,共4页
Journal of Hunan Ecological Science
基金
住建部科技攻关计划项目(编号:2011-K6-10)
广州市科技重大专项计划项目2011产学研专项(编号:2011Y5-00008)
关键词
城市污泥
好氧堆肥
重金属
钝化
sewage sludge
aerobic composting
heavy metal
inactivation
