Method for sludge composting using new regulator

Abstract

The present invention relates to new technological process of aerobically composting sludge with suspended biological carrier normally used in sewage treatment as the amendment. The sludge material is added with wood dust in 5-15 wt% of sludge and suspending biological carrier stuffing in 5-10 wt% of sludge as the amendment to make the stirred material possess water content of 60-70 %. The aerobic fermentation apparatus is dynamically controlled I ventilation and stirring frequency for fast composing treatment. Finally, the suspending biological carrier stuffing is sieved out for reuse. The new amendment of the present invention has good attaching performance, no loss and reuse, and the present invention has high composing efficiency.

Description

technical field

[0001] The invention relates to a new process for sludge aerobic composting treatment. Specifically, it relates to a method for applying a suspended biological carrier filler as a new conditioner to a sludge aerobic composting process. Background technique

[0002] With the acceleration of my country's urbanization process, the sludge generated by urban sewage plants will also increase significantly. According to statistics, the annual amount of dry sludge produced in my country is about 6.67 million tons, and Shanghai alone produces more than 50,000 tons of sludge with a moisture content of 99% every day. At present, the disposal methods of municipal sludge include incineration, sanitary landfill and land utilization, among which land utilization has become an important disposal method. However, stabilization and harmless treatment must be carried out before land use. Stabilization and harmless treatment of sludge mainly include:...