A biological agent for treating glutamic acid fermentation sewage

Abstract

The invention relates to a biological preparation for treating glutamic acid fermentation sewage. The biological preparation is prepared by mixing a compound microbial agent and a carrier according to the weight ratio of 2 to 1, wherein the compound microbial agent is prepared from, by weight, 5 parts of rhodococcus fermentation liquor, 5 parts of bacillus pumilus fermentation liquor, 3 parts of penicillium diversum fermentation liquor and 3 parts of micrococcus luteus fermentation liquor. The treatment water quantity and treatment water quality can be improved by adopting the biological preparation, the operating cost is reduced, standard-reaching discharging is promoted, the sludge yield can be also decreased, the biological preparation is advantageous to removal of pollutants such as COD and ammonia nitrogen in waste liquid and has a good application prospect.

Description

technical field [0001] The invention relates to the field of amino acid extraction technology in the biological fermentation industry, and specifically discloses a biological preparation for treating glutamic acid fermentation sewage. Background technique [0002] After isoelectric extraction of glutamic acid from monosodium glutamate fermentation broth, the mother liquor discharged has high COD, BOD5, high bacterial content, high sulfate radical (chloride ion before changing to pH adjustment with sulfuric acid), high ammonia nitrogen content and pH value (1.5 -3.2) Low "five highs and one low" characteristics. It is a kind of industrial wastewater that is very difficult to treat. Due to the ineffective treatment of MSG wastewater, many MSG factories have been listed as national key pollution sources. The treatment of MSG wastewater has become a major problem restricting the development of MSG production enterprises. The treatment technology of this kind of high-concentrat...

AI Technical Summary

Problems solved by technology

Activated carbon is widely used as an important adsorbent material because of its rich pore structure and huge specific surface area, good chemical stability and strong adsorption capacity, but its cost is high

There are also non-metallic ionic minerals such as attapulgite for adsorption, but natural non-metallic minerals have the following limitations as adsorbents: natural non-metallic minerals have high density and limited specific surface area, and the surface of natural non-metallic minerals is mostly negatively charged. And directly using natural non-metallic powder ore such as clay minerals as the adsorbent will have the problem of difficult separation of solid and liquid after adsorption

The applicant group company has been committed to clean amino acid production methods for many years. It once disclosed a process for effectively treating fermentation waste liquid, in which microbial agents were used to treat COD, ammonia nitrogen, and SS effectively, but there were too many strains in the agents. Too much, which increases the possibility of bacterial strain pollution. The amount of bacterial agent used is too large. It is necessary to add 0.5-1kg of physical adsorbent and 15-20g of bacterial agent per ton of sewage, and the bacterial agent is easy to deposit at the bottom of the pool, causing flocculation, thus A large amount of sludge is generated, and it is difficult to clean up