Method for treating pot bottom water through low-cost anaerobic fermentation

A technology of anaerobic fermentation and bottom pot water, which is applied in fermentation, biochemical equipment and methods, and recovery of by-products, etc., can solve the problems of ineffective utilization of organic matter in bottom pot water, difficulty in bottom pot water treatment, and high processing cost. Achieve the effects of overcoming economic losses and water pollution, increasing the content of main flavor components, and reducing processing costs

Inactive Publication Date: 2021-09-07
SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the above-mentioned deficiencies in the prior art, the present invention provides a method for treating bottom pot water through low-cost anaerobic fermentation, so that the industrial wastewater generated in the liquor production process can realize zero discharge, and the obtained fermentation-completed liquid can be used again The liquor brewing and fermentation process realizes the production demand of "increasing self and reducing milk" in the liquor industry, and effectively solves the difficulty and high cost of bottom pot water treatment in the prior art, and the secondary pollution caused by ineffective utilization and discharge of organic matter in bottom pot water And other issues

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  • Method for treating pot bottom water through low-cost anaerobic fermentation
  • Method for treating pot bottom water through low-cost anaerobic fermentation
  • Method for treating pot bottom water through low-cost anaerobic fermentation

Examples

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Effect test

Embodiment 1

[0023] A method for treating bottom pot water by low-cost anaerobic fermentation, comprising the following steps:

[0024] (1) Filter the bottom pot water stock solution through gauze, then add 4 times the mass of deionized water to dilute, adjust the pH value to 5, and obtain the fermentation broth;

[0025] (2) Put the fermented liquid obtained in step (1) into a fermenter, add 15g / L pit mud containing anaerobic microorganisms (butyric acid bacteria, caproic acid bacteria), and cultivate it at a temperature of 30°C for 7 days to complete the bottom pot water deal with. The fermenter is equipped with a safety valve with a pressure value of 0.2kPa; when the fermentation gas exceeds 0.2kPa, the fermenter will reduce the pressure through the safety valve and let the nutrients in the tank be automatically mixed through the air pressure difference.

[0026] The finished liquid after the final fermentation was completed was qualitatively and quantitatively analyzed by Headspace So...

Embodiment 2

[0035] A method for treating bottom pot water by low-cost anaerobic fermentation, comprising the following steps:

[0036] (1) Filter the bottom pot water stock solution through gauze, then add 5 times the mass of deionized water to dilute, adjust the pH value to 5.3, and obtain the fermentation broth;

[0037] (2) Put the fermented liquid obtained in step (1) into a fermenter, add 20g / L pit mud containing anaerobic microorganisms (butyric acid bacteria, caproic acid bacteria), and cultivate it at 35°C for 10 days to complete the bottom pot water deal with. The fermenter is equipped with a safety valve with a pressure value of 0.2kPa; when the fermentation gas exceeds 0.2kPa, the fermenter will reduce the pressure through the safety valve and let the nutrients in the tank be automatically mixed through the air pressure difference.

[0038] The finished liquid after the final fermentation was completed was qualitatively and quantitatively analyzed by Headspace Solid Phase Micr...

Embodiment 3

[0045] A method for treating bottom pot water by low-cost anaerobic fermentation, comprising the following steps:

[0046] (1) Filter the bottom pot water stock solution through gauze, then add 6 times the mass of deionized water to dilute, adjust the pH value to 5.5, and obtain the fermentation broth;

[0047](2) Put the fermented liquid obtained in step (1) into a fermenter, add 25g / L pit mud containing anaerobic microorganisms (butyric acid bacteria, caproic acid bacteria), and cultivate it at a temperature of 45°C for 15 days to complete the bottom pot water deal with. The fermenter is equipped with a safety valve with a pressure value of 0.2kPa; when the fermentation gas exceeds 0.2kPa, the fermenter will reduce the pressure through the safety valve and let the nutrients in the tank be automatically mixed through the air pressure difference.

[0048] The finished liquid after the final fermentation was completed was qualitatively and quantitatively analyzed by Headspace ...

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Abstract

The invention discloses a method for treating pot bottom water through low-cost anaerobic fermentation. The method comprises the following steps of (1) sequentially filtering and diluting a pot bottom water stock solution, and adjusting the pH value to 5-5.5 to obtain a fermentation solution; and (2) loading the fermentation solution obtained in the step (1) into a fermentation tank, adding 15-25 g/L of pit mud containing anaerobic microorganisms, and culturing at the temperature of 30-45 DEG C for 7-15 days to complete the pot bottom water treatment. According to the method, zero discharge of industrial wastewater generated in the white spirit production process is realized, the obtained fermentation solution can be used for the white spirit brewing fermentation process again, the production requirements of increasing the content of ethyl hexanoate and reducing the content of ethyl lactate in the white spirit industry are met, and the problems that in the prior art, the pot bottom water treatment difficulty is large, the treatment cost is high, organic matter in the pot bottom water is not effectively utilized, and secondary pollution is caused by emission are effectively solved.

Description

technical field [0001] The invention relates to the technical field of bottom pot water treatment and biological fermentation, in particular to a method for treating bottom pot water through low-cost anaerobic fermentation. Background technique [0002] In recent years, the liquor economy has developed rapidly, and the environmental pollution has become increasingly serious. The main water pollutants come from the bottom pot wastewater produced in the fermentation process and cleaning process of the wine steaming process. Usually, in the process of distilling wine, enterprises will add water that is helpful for distillation at the bottom of the Zhen barrel, which is the bottom pot water. The water in the bottom pot will accumulate a large amount of organic matter, organic acids and other substances during the steaming process of materials and wine. The chemical oxygen demand of bottom pot water (CODcr value: refers to the amount of oxidant consumed when using potassium dich...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12G3/02C12F3/00
CPCC12G3/02C12F3/00
Inventor 卫春会郑自强任志强黄治国邓杰
Owner SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
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