"Sludge" is a by-product/waste generated during the urban wastewater treatment process. "Sludge" consists of the following components: microorganisms, residues from animals and plants, inorganic minerals, potential heavy metals, micropollutants, and pathogens.
Treatment methods for this by-product include sanitary landfill, municipal incineration, and use as a raw material for clinker production. Additionally, sludge can be converted into bioenergy via anaerobic digestion or utilized for land improvement after stabilization.
Sludge characteristics: moisture content 95%, dry matter content 5%, total organic carbon 41.15% TS, total nitrogen 3.02% TS, total phosphorus 1. 57% TS, and the lower heating value of the sludge is 9400 kJ/kg TS.