Process and device for recovering reverse osmosis-nanofiltration combination membrane separation material of fermentation liquor

Abstract

The invention discloses a process for recovering a reverse osmosis-nanofiltration combination membrane separation material of fermentation liquor. The process comprises the steps of circulating extraction in a bioreactor, membrane separation, finished product concentration and water recovery, and the steps are sequentially connected and closed to form a circulating process system. The process comprises the following specific steps: the preprocessed reverse osmosis-nanofiltration combination membrane separation material of the fermentation liquor enters the bioreactor to be extracted and coarsely filtered, coarse filter liquor is pumped into a membrane separation device by using a coarse filter liquor pumping device to be subjected to membrane separation extraction, extract liquor penetrating through a separation membrane enters a finished product container, and residue liquor not penetrating through the separation membrane flows back to the bioreactor for reaction and enzymolysis; the extract liquor is pumped into a concentration and recovery device through an extract liquor pumping device to be subjected to concentration and solvent recovery, a part incapable of penetrating through the membrane is concentrated liquor flowing back to the finished product container, water penetrating through the membrane flows back to the bioreactor for continuously dissolving enzymatically hydrolyzed effective ingredients, and circulation is stopped until the effective ingredients are extracted completely, wherein lysozyme is fibrinoclase with the concentration of 5-7%, and the extraction temperature is 42-43 DEG C.

Description

technical field [0001] The invention relates to the technical field of environmental engineering, in particular to a fermentation liquid reverse osmosis-nanofiltration combined membrane separation material recovery process and device. Background technique [0002] At present, the treatment of pollutants in fermentation broth is a major environmental issue of great concern to the international academic community. The cost of wastewater-based treatment in European and American countries is too high, which reduces the price competitiveness of products, and thus transfers such industries to developing countries. my country is a large producer of fermented products, and it is imperative to effectively control a large amount of toxic and harmful wastewater produced in this industry. [0003] Due to the characteristics of high toxicity and difficult biodegradation of the pollutants in the fermentation broth, the treatment methods mainly include biological methods and physical and ...

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Problems solved by technology

[0005] In the prior art, there is no material recovery process and device specificall

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