A water circulation system for clean production of sodium hyaluronate

Abstract

The invention provides a water circulation system for cleaner production of sodium hyaluronate and belongs to the technical field of the fermentation industry. The water circulation system mainly comprises a brine unit cooling unit, a fermentation cooling, refined air-conditioning cooling and alcohol tower cooling unit, a warm water tank and alcohol tower bottom heat exchange unit, a fermentationdissolved water and purification dissolved water return alcohol tower unit and an alcohol tower bottom water heat exchange wastewater after-treatment unit. On one hand, closed cycle use of water for fermenting purifying and refining processes in manufacturing shops can be realized by a sewage treatment system, the utilization rate of water is improved, and the emission of wastewater is reduced; onthe other hand, comprehensive utilization of energy is realized by virtue of different requirements of different production processes on the temperature, the energy utilization rate is improved, theproduction energy consumption is reduced, and the environment is protected.

Description

technical field [0001] The invention relates to the technical field of fermentation industry, in particular to a water circulation system for clean production of sodium hyaluronate. Background technique [0002] In the prior art, the production of sodium hyaluronate mostly adopts microbial fermentation method, generally including fermentation, purification, refining and other processes. Dissolving the culture medium in the fermentation process, cooling down the fermenter after sterilization, dissolving the crude product, dissolving the salt, cleaning the plate and frame, and preparing the corresponding degree of alcohol in the purification process all require a large amount of water. In the subsequent alcohol precipitation, the waste alcohol will be recovered to reach the alcohol tower. The COD of the tower bottom water after the distillation of the alcohol tower is relatively high. Usually, the production enterprise directly discharges the water to the sewage treatment plan...

AI Technical Summary

Problems solved by technology

Dissolving the medium in the fermentation process, cooling down the fermentation tank after sterilization, dissolving the crude product in the purification process, dissolving salt, cleaning the plate and frame, and preparing the corresponding degree of alcohol all require a large amount of water. In the subsequent alcohol precipitation, the waste alcohol will be recovered to reach the alcohol tower. The COD of the bottom water after distillation of the alcohol tower is relatively high. Usually, the production enterprises directly discharge the water to the sewage treatment plant for treatment; on the one hand, the consumption of water resources is relatively low. Large, resulting in the waste of water resources and the burden of sewage treatment, high production costs, on the other hand, the water temperature at the bottom of the tower is very high, there is no reasonable recovery of energy, resulting in waste of heat; and the fermentation of sodium hyaluronate The process requires high-temperature moist heat sterilization, and heating room temperature water to a specified temperature consumes a lot of energy, resulting in increased energy consumption and environmental pollution

Images