Method for cleansing and reclaiming waste fluid of alcohol made from molasses

A technology for molasses alcohol waste liquid and residual liquid, applied in the direction of oxidized water/sewage treatment, etc., can solve problems such as hindering waste liquid treatment, purification and reuse, and achieve the effect of reducing treatment costs and thoroughly controlling the environment.

Inactive Publication Date: 2005-01-12
GUANGXI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the applicant has found that there are water-insoluble substances, water-soluble macromolecules, potassium, calcium and mixed acids in the waste liquid, which have both hindered the further treatment, purification and reuse of the waste liquid, and are simultaneously waste liquid. The main valuable substances in

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Molasses alcohol waste liquid (COD concentration 150000mg / L) is separated by centrifuge to obtain dry water-insoluble matter with a weight of 6.8g / L waste liquid, and the remaining liquid is separated by ultrafiltration to separate water-soluble macromolecules, and separated by bipolar membrane electrodialysis , calcium plasma and mixed acid, the COD concentration of the remaining liquid is 100000mg / L, and the remaining liquid is kept at room temperature, pH=9, and oxygen flow rate of 0.14m per liter. 3 Under the condition of / h, after being oxidized by ozone for 30 minutes, it is reused in alcohol production to replace clear water to dilute molasses, and the amount of purified waste liquid to replace dilute clear water is 75%. The recycling process is as follows:

[0016] ① Molasses (70-90°Bx) → clarification tank (add purification waste liquid, nutrient salt) → about 55°Bx sugar solution → supply ②③ as raw material;

[0017] ②55°Bx sugar solution→#1 dilution tank (ad...

Embodiment 2

[0020] Molasses alcohol waste liquid (COD concentration 95000mg / L) is separated by centrifuge to obtain dry water-insoluble matter with a weight of 2.6g / L waste liquid. Potassium hydrogen (see patent application number: 02128100.9), the COD concentration of the purified waste liquid is 65000 mg / L, and the remaining liquid is oxidized by ferromanganese carbon micro-electric field at 80 ° C, pH = 4.5, and air is properly blown in. After hours, it is used back in alcohol production instead of water to dilute molasses. The technical process of reuse is the same as that in Embodiment 1, and the amount of purified waste liquid replacing diluted clear water is 95%.

Embodiment 4

[0022] Molasses alcohol waste liquid (COD concentration 130000mg / L) is separated by centrifuge to obtain dry water insoluble matter with a weight of 4.5g / L waste liquid. Potassium hydrogen, the COD concentration of the remaining liquid is 85000mg / L, and the remaining liquid is at 70°C, pH=3.5, and the oxygen flow rate is 0.08m 3 Under the condition of / h, after 60 minutes of ozone oxidation, it will be used in alcohol production instead of water to dilute molasses. The technical process of reuse is the same as that in Embodiment 1, and the amount of purified waste liquid replacing diluted clear water is 85%.

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PUM

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Abstract

In the invention, water insoluble substance, water-soluble macromolecule substance, potassium ion, calcium ion are separated from waste liquid, the mixed acid remains liquid is oxide processed to degradate remains macromolecule organic substance to micromolecule organic substance. There are large quantity of nutrition substance can be used by yeast in the waste liquid, which can be reused to dilute molasses in stead of water in molasses alcohol fermentation production.

Description

technical field [0001] The invention relates to the technical field of environmental protection for the purification and reuse of high-concentration organic wastewater in bioengineering, in particular to the field of purification and reuse methods for molasses alcohol waste liquid. Background technique [0002] The production process of bioengineering will generate a certain amount of high-concentration organic wastewater, which is characterized by high organic content, high COD concentration, and high SS concentration. In addition to the residual nutrients in the biochemical process, the organic matter in the waste liquid also contains biological bacteria, organic pigments, organic acids, biological cell residues, raw materials brought in and inorganic elements added during production. If the high-concentration organic wastewater of bioengineering is discharged without treatment or the treatment is not up to standard, it will cause great harm t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/72
Inventor 刘慧霞扈胜禄李坚斌孙伟王进周文红黄天勇徐文炘张生炎黄伟王玉宾
Owner GUANGXI UNIV
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