The invention provides a sludge decrement method by combining microwaves, biological
enzyme and microorganisms. The method comprises the steps that
sludge of which the content of an organic medium is45% or above is pretreated for 15-35 min in a
microwave pretreatment tank; the mixing
mass ratio of
lysozyme to the
sludge after
microwave pretreatment is 1:1,500, and a
mixed solution of
lysozyme andthe sludge is obtained in a reaction tank; after the
mixed solution of
lysozyme and the sludge is mixed with composite bacterial strains, the organic medium in the sludge is decomposed, available energy is generated, the sludge amount is decreased, and the composite bacterial strains are
peptostreptococcus, veillonella, propionibacteria, fire source methanococcus
lactobacillus, methanosarcina barkeri, extreme thermophilic
archaea and
anaerobic ammonium oxidation bacteria. According to the sludge decrement method, the microwaves, special-effect
enzyme and microorganisms are adopted for completely decreasing the amount of organic medium sludge generated by a biochemical
system, and the sludge is converted into the available energy through a technology; the method has the ideal decrement effect on biochemical sludge generated in the process of treating municipal
wastewater and industrial
wastewater.