污泥重金属生物淋滤技术研究进展

Research progress in the bioleaching technology for removing heavy metals from sludge

污泥的稳定化处理、安全处置和资源化利用已成为城市污水处理领域亟需重点解决的问题。生物淋滤技术可以有效地去除污泥中的重金属、改善污泥脱水性能、消除病原菌、控制污泥恶臭,是一种具有广泛应用前景的污泥处理处置技术,对污泥的安全处置和资源化利用具有重要意义。从生物淋滤的作用机理、影响因素、反应器及工艺流程等方面对污泥重金属生物淋滤技术进行了详细介绍,并对目前污泥生物淋滤技术研究和应用上存在的问题和发展方向进行了探讨。

The stabilizing treatment, safe disposal and resource utilization of sludge has become a key problem need- ing emphatic solution. It is found that bioleaching technology can effectively remove heavy metals from sludge,im- prove dewatering capacity of sludge, eliminate pathogenic bacteria, and control sludge effluviums. It has wide appli- cation prospect for the treatment and disposal of sludge, and important meaning to the safe disposal and resource uti- lization of sludge. The mechanism,influential factors,reactor and process flow of bioleaching technology for removing heavy metals from sludge are introduced in detail. Furthermore, the problems existing in the research and application of sludge bioleaching technology, and its development direction are discussed.