Status Quo and Suggestions on Sewer Sludge Disposal Process Operation in a Downtown Area

With the acceleration of urbanization in China, the country continues to attach importance to black and odorous water bodies. Thus stormwater and wastewater pipe network operation and maintenance work is becoming more and more demanding, and how to dispose the large amount of sewer sludge has become an urgent problem. A process of scouring and recycling combined utilization was established in a city. After analyzing the operation status of the treatment facilities for half a year, it was found that the silt content below 0.2 mm was relatively high in sewer sludge, which had a certain impact on the operation. Through separation of various particle sizes and different types of substances in the sewer sludge, and then classified treatment, the requirements of stabilization, harmlessness and resource utilization could be achieved.