SLUDGE TREATMENT METHOD AND TREATMENT DEVICE

摘要

In order to make it possible to, even in a job site, easily find out a desirable agitation condition even when the type or concentration of sludge changes and thereby effectively reduce the moisture content of a dewatered cake, proposed is a sludge treatment method comprising: a mixed sludge preparation step for preparing mixed sludge by adding a first polymer flocculant solution to sludge as an object to be treated and mixing the sludge and the first polymer flocculant solution by at least one agitator; and a flocculated flock formation step for forming flocculated flocks by adding a second polymer flocculant solution to the mixed sludge and mixing the mixed sludge and the second polymer flocculant solution, and characterized in that in the mixed sludge preparation step, the preparation and mixing are performed such that the relationship among the power consumption (A (kW)) of the agitator, the sludge treatment amount (B (kg/h)) of the sludge, and the sludge concentration (C (g/L)) thereof satisfies the following equation (1). Equation (1) .. (power consumption (A) × sludge concentration (C)) / sludge treatment amount (B) = 0.15-1.10