Research on Sludge Autothermal High-temperature Aerobic Digestion with Preheating and Resource Utilization
The production of sewage sludge is increasing day by day,and how to effectively treat it has become a major challenge for sewage treatment plants.The utilization of sludge resources is the most effective method for sludge disposal.This paper designed a sludge aerobic digestion device,which could maintain the operation of the reactor at high temperature under the action of preheating and insulation.Under the design parameters of sludge solid content 5％～6.5％,stirring speed 80 r/min,and aeration rate 0.12 m3/h,when the solid retention time was 10 d,the degradation rate of the digested sludge reached the highest 55％.The pathogenic bacteria in the sludge was"undetected",and the sludge achieved the standards of stabilization and harmless treatment,then achieve the goal of sludge resource utilization.
NETL
NSTL
万方数据
