Method for reducing water content of sludge

The invention discloses a method for reducing the water content of sludge. Cationic polyacrylamide I is sequentially added into the sludge, then sodium acetate and cationic polyacrylamide II are addedinto the sludge, candida utilis is added, and then cationic polyacrylamide III and rhodopseudomonas palustris are added into the sludge; finally, sepiolite powder is added under the stirring condition, activated carbon is spread on the surface of the sludge, the mixture stands for several hours, and liquid is filtered out, so that the sludge is treated. According to the method, the addition timeof each component is strictly limited, the treatment time of each stage is strictly limited, and the water content can be reduced to 25% or below; the low-grade heat value is increased, the sludge incineration capacity per unit time can be improved when the incineration treatment is carried out at the later stage, no pollution is caused to the environment in the whole treatment process, and no odor is released. The treatme