Microorganism bacterium agent for digesting sludge

Abstract

The invention relates to the field of microorganism environmental protection and in particular relates to a microorganism bacterium agent for digesting sludge. The microorganism bacterium agent is prepared from aspergillus niger, escherichia coli, a mixed bacterial colony, bifidobacterium and the balance of nutrient substances in percentage by mass, wherein the mixed bacterial colony is composed of rhodospirillum rubrum, streptococcus thermophilus, salt denitrified virgibacillus and paracoccus denitrificans at the mass ratio of 1 to 1 to 1 to 1. The bacterium agent provided by the invention is simpler to synthesize, and comprises the mixed bacterial colony, the escherichia coli, the bifidobacterium and the aspergillus niger; microorganisms are mixed through self-culture, and then the nutrient substances for the growth of the microorganisms are added to obtain the bacterium agent; the microorganism bacterium agent is very convenient to produce, and can be used for converting organic acids including propionic acid and the like, which cannot be utilized by methanogenic bacteria after organic matters are decomposed through an enzyme, into acetic acid, and methane gas is generated; the amount of the methane generated through the sludge with the equivalent volume can be greatly improved and the efficiency is improved very well; the utilization rate of the sludge is increased and the sludge is recycled better.

Description

technical field [0001] The invention relates to the field of microbial environmental protection, in particular to a microbial bacterial agent for digesting sludge. Background technique [0002] Sludge is the product of sewage treatment. It is an extremely complex heterogeneous body composed of organic debris, bacterial cells, inorganic particles, colloids, etc. The main characteristics of sludge are high water content, high organic matter content, and easy It is rotten and smelly, and the particles are finer, the specific gravity is smaller, and it is in a colloidal liquid state. It is a thick substance between liquid and solid and can be transported by a pump, but it is difficult to separate solid-liquid through sedimentation and digest sewage Sludge refers to the stable sludge obtained through the action of microorganisms under aerobic or anaerobic conditions. Digested sludge is divided into sludge aerobic digestion and sludge anaerobic digestion. [0003] Anaerobic diges...

AI Technical Summary

Problems solved by technology

[0004] In the anaerobic digestion process of sludge, although it mainly relies on concentration and dehydration, the organic matter is anaerobically decomposed and converted into biogas, which itself is also a digestion process. In the prior art, the process of generating biogas from sludge mainly relies on methane production Bacteria consume formic acid, acetic acid and methanol, and organic acid substances are produced by digestion and decomposition of organic matter by enzymes such as cellulase, protease and lipase, and then remove formic acid, acetic acid and methanol that can be directly used by methanogenic bacteria , other acids and alcohols, such as propionic acid and butyric acid, cannot be used as substrates for methanogenic bacteria to produce methane, and cannot be decomposed and utilized by methanogenic bacteria, which largely causes waste of resources and greatly reduces the efficiency of methane production