Microorganism bacterium agent for sludge reduction onsite as well as preparation method and application of microorganism bacterium agent

Abstract

The invention discloses a microorganism bacterium agent for sludge reduction onsite as well as a preparation method and application of the microorganism bacterium agent. The microorganism bacterium agent is prepared from bacillus amyloliquefaciens CGMCC No 1.769 and saccharomyces cerevisiae CGMCC No 2.3853. Fermentation liquor of the bacillus amyloliquefaciens and fermentation liquor of the saccharomyces cerevisiaeare respectively frozen and dried into powder; the two types of powder are mixed to form the microorganism bacterium agent. The microorganism preparation disclosed by the invention is used for domestic sludge reduction onsite and the microorganism bacterium agent is added into an aerobic tank of a municipal sewage treatment plant. The addition quantity of the microorganism bacterium agent is 0.01 permillage to 0.1 permillage of the quantity of processed water in the aerobic tank. According to the invention, a biological cell lysis method is utilized to degrade macro molecular hard-degraded substances in sludge and addition of the microorganism bacterium agent can obviously reduce yield of the sludge. Compared with the prior art, the microorganism bacterium agent has the characteristics of high efficiency, low cost and high simplicity for operation and is suitable for sludge reduction onsite of all municipal sewage treatment plants.

Description

technical field

[0001] The invention belongs to the technical field of environmental protection, and in particular relates to a microbial agent for in-situ reduction of sludge and its preparation method and application. Background technique

[0002] With the great improvement of my country's urban sewage treatment capacity, the amount of excess sludge generated in the corresponding sewage treatment process is also increasing. Compared with sewage, sludge is more toxic. At present, 80% of sludge in my country has not been properly disposed of. However, its production is still increasing at a rate of 10-15% per year, and the sludge pollution is becoming more and more serious. The problem of sludge treatment has become a worldwide problem.

[0003] Even though the current sewage treatment plant has concentrated the sludge, the water content of the wet sludge is still as high as 80%. Moreover, these sludges contain mercury, cadmium, pathogenic bacteria, parasites and other subst...

Images