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Sodium glutamate fermentation waste liquid treatment process

A technology of sodium glutamate and fermentation waste liquid, which is applied in the direction of food industry wastewater treatment, multi-stage water treatment, water/sewage treatment, etc. It can solve the difficult problems of wastewater and flue gas treatment, affecting production stability and sustainability , Restricting the development of MSG industry and other issues, to achieve the effect of improving biological treatment efficiency, good degradation effect, and reversing the current situation of losses

Active Publication Date: 2015-03-04
HULUNBEIER NORTHEAST FUFENG BIOTECHNOLOGIES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, with the rapid expansion of the production capacity of the chemical fertilizer industry, the decline in agricultural demand, coupled with the low content of ammonium sulfate produced and the difficulty in sales, have led to a large backlog of products, seriously affecting the stability and sustainability of production
At the same time, the flue gas generated during the spray granulation process is discharged to form a large amount of white "smoke", which contains pollutants such as smoke and dust, and has an unpleasant smell, which has a great impact on the environment.
Universities, research institutes, and glutamic acid production enterprises have done a lot of research on this problem, but it is still difficult to solve the problem of waste water and flue gas treatment, which seriously restricts the development of the MSG industry.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A treatment process for sodium glutamate fermentation waste liquid, comprising the steps of:

[0027] (1) Add liquid ammonia and sodium hydroxide to the glutamic acid fermentation liquid to react at the same time, the molar ratio of liquid ammonia and sodium hydroxide is 2:1, and obtain a fermentation liquid containing sodium glutamate; among them, liquid ammonia + The molar ratio of the total amount of sodium hydroxide added to the glutamic acid in the glutamic acid fermentation broth is 1:1;

[0028] (2) The fermented liquid treated in step (1) is sterilized by microfiltration membrane filtration, and the retentate and filtrate are collected respectively; The product and the concentrated solution are combined into a mixed material liquid for later use; wherein, the microfiltration membrane is an inorganic ceramic membrane with a molecular weight cut-off of 2000MW and a microfiltration temperature of 40°C; the ultrafiltration membrane has a molecular weight cutoff of 3...

Embodiment 2

[0044] A treatment process for sodium glutamate fermentation waste liquid, comprising the steps of:

[0045] (1) Add liquid ammonia and sodium hydroxide to the glutamic acid fermentation liquid to react at the same time, the molar ratio of liquid ammonia and sodium hydroxide is 2:1, and obtain a fermentation liquid containing sodium glutamate; among them, liquid ammonia + The molar ratio of the total amount of sodium hydroxide added to the glutamic acid in the glutamic acid fermentation broth is 1:1;

[0046] (2) The fermented liquid treated in step (1) is sterilized by microfiltration membrane filtration, and the retentate and filtrate are collected respectively; The product and the concentrated solution are combined into a mixed material liquid for later use; wherein, the microfiltration membrane is an inorganic ceramic membrane with a molecular weight cut-off of 2000MW and a microfiltration temperature of 40°C; the ultrafiltration membrane has a molecular weight cutoff of 3...

Embodiment 3

[0055] Get monosodium glutamate production fermentation workshop waste water, process according to the technology of embodiment 1, get 100L water sample, detect the numerical value of each pollutant; Then add 30 grams of composite bacterial agents every cubic meter of waste water, add 1 time every day, Dosing continuously for one week, standing still for three days, testing the values ​​of each pollutant, it was found that the treated wastewater fully met the discharge standard. The values ​​before and after treatment are shown in Table 1:

[0056] Table 1

[0057] COD mg / L Ammonia nitrogen mg / L before processing 3846 297 after treatment 87 7.3

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PUM

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Abstract

The present invention belongs to the field of sodium glutamate waste liquid treatment in biological fermentation industry, and discloses a sodium glutamate fermentation waste liquid treatment process, which comprises: (1) preparing a sodium glutamate-containing fermentation broth, (2) filtering, (3) carrying out decolorizing, concentration and primary crystallization, (4) carrying out secondary crystallization, (5) carrying out sewage treatment, and (6) preparing the feed. The treatment process of the present invention has characteristics of substantial production cost reducing, simple production process operation, wastewater treatment burden reducing, good economic benefit achieving, and good environmental protection benefit achieving.

Description

technical field [0001] The invention relates to the field of sodium glutamate waste liquid treatment in the biological fermentation industry, and specifically provides a treatment process for sodium glutamate fermentation waste liquid. Background technique [0002] The chemical name of sodium glutamate is monosodium α-aminoglutarate, which is a salt formed by sodium ions and glutamate ions, in which glutamic acid is an amino acid and sodium is a metal element. The main ingredient of seasoning MSG commonly used in life is sodium glutamate. Monosodium glutamate is a commonly used flavoring agent in daily life, which can increase the umami taste of food and help improve the digestibility of food by the human body. In addition, sodium glutamate has very important functions and is widely used in food, medicine, industry and agriculture. [0003] With economic development and technological progress, my country has become a big country in the production and demand of monosodiu...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F3/34A23K1/00A23K1/16C07C229/24C07C227/18
CPCC02F3/34C02F9/00C07C227/18C07C227/40C02F2301/08C02F1/38C02F1/281C02F1/283C02F1/444C02F2001/5218C02F2103/32C07C229/24
Inventor 董力青丁兆堂郭永波莫密言
Owner HULUNBEIER NORTHEAST FUFENG BIOTECHNOLOGIES CO LTD
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