Existing Situation on Disposal of Sludge from Wastewater Treatment Plant in Three-Gorges Reservoir Area
HE Qiang, ZHOU Jian, HUANG Ming
DOI:10.11835/j.issn.1674-4764.2007.03.001
Received ,Revised February 05, 2007, Accepted , Available online July 01, 2015
Volume ,2007,Pages 1-
- Abstract
At present 18 wastewater treatment plants operateing in the Small towns of Three Gorge Areas of Chongqing Municipality, producing 132.95 tons surplus sludge everyday. As regards to the disposition of such numerous surplus sludge, the major disposition technique in these wastewater water treatment plants, i. e. , thickening and mechanical dewatering technique followed by feeding into the municipal solid waste landfill, seems to have a rather bad effect on the normal operation of the municipal solid waste landfill, due to the unstabilized sludge resulted from this technique of the sludge disposition and high moisture in the sludge, which is higher than 80%. This paper has paid some attention to this phenomenon. With respect to the small towns having the the municipal solid waste landfill, the techniques of mechanical dewatering, calcareousness stabilized etc. before feeding into the municipal solid waste landfill, seem to be feasible, while the composting and comprehensive utilization of sludge is available in the small towns which have no municipal solid waste landfills.