Rapid residual sludge dehydration and deodorization method

The invention discloses a rapid residual sludge dehydration and deodorization method which comprises the following steps: (1) firstly, adding a dispersing agent, namely, plant ash, into the residual sludge, uniformly mixing up the two components, and standing for 3-5 hours, wherein the weight ratio of the residual sludge to the plant ash is 10:6; (2) adding a heat-resisting alkali-resisting bacillus laterosporus liquid and an EM (Effective Microorganisms) liquid which respectively account for 0.05-0.09% and 0.03-0.06% of the weight of the mixture obtained in the step (1); (3) uniformly mixing up the mixtures in the step (2), and subsequently standing for 36-48 hours at normal temperature to ferment; and (4) naturally spreading the fermented mixture in the step (3), and drying for 2 hours in air naturally, so as to accomplish the treatment process. By adopting the method, urban sludge can be effectively and rapidly dehydrated and deodorized, and the method has the characteristics of simple step, simplicity and