Production method of composite bio-enzyme preparation for domestic sludge decrement treatment

Abstract

The invention relates to a production method of a composite bio-enzyme preparation for domestic sludge decrement treatment. The production method is characterized by comprising the following processes sequentially: strain collection and extraction, strain cultivation, fermentation, and bio-enzyme separation and extraction, wherein the strain collection and extraction comprises the following steps: collecting bacteria from the domestic sludge, then cultivating by adopting a corresponding culture medium and mixing the corresponding strain and corresponding fermentation backing material for fermentation; the bio-enzyme separation and extraction process is a physical separating and extracting process or a chemical separating and extracting process, wherein the physical separating and extracting process is to conduct centrifugal separation to leavening by adopting a centrifugal method and the chemical separating and extracting process comprises the steps of adding ammonium sulfate into the leavening for salting out and then filtering. Compared with the prior art, the produced composite bio-enzyme preparation for domestic sludge decrement treatment has the advantages of removing odor, eliminating the inhibitional effect of H2S to nitrifying process, effectively reducing organic matters, converting soluble organic matters into carbon dioxide, nitrogen, oxygen, water and sulfate, reducing TSS (Total Soluble Solid), COD (Chemical Oxygen Demand) and BOD (Biochemical Oxygen Demand), greatly decreasing the yield of the sludge, and being non-toxic and corrosion-free and avoiding secondary pollution.

Description

technical field [0001] The present invention relates to a preparation method for treating domestic sludge. Background technique [0002] At present, no relevant patents have been found that specifically use compound biological enzymes to treat domestic sludge reduction, but some literature shows that the following methods can achieve sludge reduction, promote the decomposition of organic matter in sludge, and contribute to The volume reduction of sludge can objectively reduce the volume of sludge. [0003] References: "New Technologies for Sludge Reduction in Sewage Treatment", "Research on Multifunctional Microbial Agents for Sludge Reduction", "Research on Enhancing the Hydrolysis of Excess Sludge with External Enzyme", "Reduction of Excess Sludge Technology Research Progress", "External Enzyme Enhanced Hydrolysis of Excess Sludge Under Anaerobic Conditions", "Sewage Plant Sludge Enzymatic Reduction and Recycling Technology Research". [0004] (1) Chemical agent reductio...

AI Technical Summary

Problems solved by technology

In my country, there are relatively few studies on the use of biological methods to reduce sludge, especially the use of compound biological enzymes to catalyze sludge reduction. Due to the complexity of the production process of biological enzymes in the past, the cost is high, and the composition of sewage is required to be relatively simple. It is difficult to meet the requirements of large-scale sewage treatment plants, so even less work has been done in this area