城市污泥厌氧消化工艺设计与运行研究

Study on Process Design and Operation of Anaerobic Digestion for Urban Sludge

采用高浓度完全混合式厌氧发酵技术处理城市污泥,将污泥中的有机物转化为富含甲烷的天然气,实现污泥的减量化和资源化;并将污泥中的硫元素转化为可溶性硫离子,在完全混合的状态下,与污泥中重金属反应,达到协同脱除污泥中重金属和降低沼气中硫化氢含量的目的。

Completely mixed anaerobic fermentation technology of high concentration was used to treat the urban sludge, bywhich the organic matter of sludge was converted tomethane-rich natural gas, in order to achieve sludge reduction and recy-cling. In addition, sulfur in sludge was also converted to soluble sulfur ions, and reacted with heavy metals in sludge in a com-pletely mixed state, in order to achieve the purpose of synergistically removing heavy metals in sludge and reducing the con-tent of hydrogen sulfide in biogas.