Method for decoloring methionine crystallization mother liquor by adopting membrane integration technology

Abstract

The invention provides a method for decoloring a methionine crystallization mother liquor by adopting a membrane integration technology. The method comprises the following steps: 1, carrying out ultrafiltration (UF) system treatment on methionine; and 2, carrying out nanofiltration (NF) membrane decoloring purification system treatment, adding pure water to the obtained nanofiltration concentrate, carrying out filter washing, directly conveying the obtained substance to a burning device, burning, and allowing an NF permeation liquid to directly enter a subsequent process. The clean production membrane integration decoloring technology is adopted to substitute active carbon decoloring in order to remove colloids and other pigments in the methionine crystallization mother liquor, so the generation of solid wastes of an enterprise is reduced, and the working environment of a decoloring workshop is improved; and high concentration multiple of the membrane technology is used, so the emission amount of wastewater is reduced, and the running pressure of the wastewater treatment station of the enterprise is reduced.

Description

technical field [0001] The invention relates to a process for decolorizing methionine crystallization mother liquor by membrane integration technology. Background technique [0002] Methionine, also known as methionine, is one of the essential amino acids that constitute the human body and participates in protein synthesis. Because it cannot be produced in the body itself, it must be obtained from the outside. If the lack of methionine will lead to blockage of protein synthesis in the body, resulting in damage to the body. Excessive oxidation of membrane lipids caused by oxygen free radicals in the body is the cause of various damages in the body. Lipid peroxides can damage the primary and secondary lysosomal membranes, release the hydrolyzed acid phosphatase contained in the lysosomes, and cause damage to important organelles such as cells and mitochondrial membranes. Methionine passes through a variety of ways to combat these damages. In recent years, the demand for me...

AI Technical Summary

Problems solved by technology

However, the disadvantages of this process are as follows: 1. The methionine crystallization mother liquor contains a large amount of pigment, which greatly reduces the efficiency of multi-effect evaporation, MVR and reverse osmosis membrane concentration; Large; 3. The decolorization of activated carbon leads to harsh production environment and serious dust pollution. The decolorized activated carbon becomes waste solids and needs outsourcing treatment

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