Study on the Sludge Dewatering Based on the Filtration Characteristic of Geotextiles

The dehydration and minimization of sludge depended on filtering technology of geotextile is a hot issue in environmental project. By studying related process, the types, weaving forms, weaving structures and pore sizes of geotextile were tested. CPAM was the optimal flocculant with the dose of 90-110 mg/L and twill weaving geotextile with pore size of 0.5 mm was best. The final water content of sludge could drop to 40 %.