Sludge decrement method by combining microwaves, biological enzyme and microorganisms

Abstract

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.

Description

technical field [0001] The invention relates to the technical field of sludge treatment, in particular to a sludge weight reduction method combining microwaves, biological enzymes and microorganisms. Background technique [0002] In general, a sewage treatment plant can produce 5-8 tons of sludge with a moisture content of 80% for 10,000 tons of domestic sewage, and 10-30 tons of sludge for 10,000 tons of industrial sewage. Calculated according to the unit output of 7 tons and 20 tons, respectively, in 2020, the amount of urban domestic sludge generated in my country will be 43.82 million tons, and the amount of industrial sludge generated will be 40 million tons, totaling 83.82 million tons. Contrary to the continuous increasing trend of sludge production, the harmless chemical rate of sludge in my country is still low, and a large number of sewage plants use direct dumping or simple landfill disposal methods to treat sludge. According to data from the E20 Research Institut...

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Problems solved by technology

It can be seen that landfill is still the main method of sludge treatment in my country. In addition, the disposal capacity of urban sewage treatment enterprises in my country is insufficient and the disposal methods are backward. serious threat

[0004] At present, most of the domestic and even foreign sludge treatment only stays in the technology of how to dry or landfill the sludge. There are technologies with slow sludge reduction efficiency, easy to cause pollution, and high operating costs and investment. question

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