Design Scheme for Sludge Comprehensive Disposal of a Municipal Sewage Treatment Plant in Yunnan
A certain city in Yunnan currently has 3 sewage treatment plants with a total design treatment capacity of 110000 m3/d and 80 t of sludge with 80％ water content per day.The existing sludge disposal facilities can no longer meet the treatment requirements,and the problem of sludge disposal is imminent.Through the analysis and research on the sludge properties of each sewage plant,it is found that the sludge has low content of heavy metals,high content of organic matter,nitrogen,phosphorus and potassium,and has the conditions for resource utilization.The city plans to build a comprehensive sludge disposal center,set up 2 municipal domestic sludge disposal production lines,with a total design capacity of 80 t/d (sludge moisture content 80％),and adopt the aerobic fermentation+land use process as the main technical route to realize the recycling of sludge resources.
sewage treatmentsludge disposalaerobic fermentationland use
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