Wine brewing waste liquid decolorizing agent and preparation method thereof

Abstract

The invention discloses a wine brewing waste liquid decolorizing agent and a preparation method thereof. The preparation method comprises the steps that loofah sponge is placed in an alkaline solutionto be subjected to heat treatment, and then washing, drying and smashing are conducted to obtain loofah sponge powder; and dispersing butyl titanate, zinc salt, acetylacetone and thiourea into absolute ethyl alcohol, then adding inorganic acid, water and the loofah sponge powder, stirring, and then standing to obtain sol; calcining the sol to prepare the wine brewing waste liquid decolorizing agent, wherein the alkaline solution is composed of an alkaline compound, water and alcohol. The wine brewing waste liquid decolorizing agent has the characteristics of directly degrading dark impuritiesand can be directly and repeatedly used for multiple times, and the preparation method has the characteristics of easily available raw materials and simplicity in operation.

Description

technical field [0001] The invention relates to a decolorizing agent, in particular to a decolorizing agent for brewing waste liquor and a preparation method thereof. Background technique [0002] In the two processes of wine cleaning, fermentation and distillation, a large amount of wastewater will be produced, and these wastewaters are generally darker in color, with the characteristics of many suspended particles, large BOD / COD ratio, and high content of organic matter and polyphenols. It is a kind of wastewater that is difficult to deal with in the industry, and discharge into rivers will cause severe eutrophication of water bodies, leading to red tides and other phenomena. [0003] At present, during the treatment of brewing waste liquid, the brewing waste liquid is generally decolorized first, and the commonly used decolorizing agent is carbon powder. Although the decolorization of carbon powder is carried out by physical adsorption, even if it can play a role in decol...

AI Technical Summary

Problems solved by technology

[0003] At present, during the treatment of brewing waste liquid, the brewing waste liquid is generally decolorized first, and the commonly used decolorizing agent is carbon powder. Although the decolorization of carbon powder is carried out by physical adsorption, even if it can play a role in decolorization, but It cannot effectively remove dark substances. At the same time, once the toner is saturated, the toner needs to be activated before further decolorization. It can be seen that the decolorization of toner has the disadvantages that it is difficult to degrade dark impurities and it is difficult to directly reuse it many times.

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