Analysis of technical route for municipal wastewater sludge treatment and disposal in Henan province.

This paper firstly briefly analyzed the ordinary sludge treatment technologies as well as their investment and operating cost,and then built the evaluation index system of sludge treatment scheme in Henan province,and four schemes of sludge treatment(land utilization,landfill,incineration and building material use) were comprehensively evaluated by using analytic hierarchy process(AHP) method and membership function.The result indicated that land utilization was the best scheme of sludge treatment.Finally,according to the actual conditions of Henan province,four technical routes for the combined treatment and disposal of sludge were recommended,and their applicable areas were also analyzed.