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Treatment method for gulonic acid mother liquor in VC production

A cologne mother and treatment method technology, applied in water/sewage treatment, natural water treatment, chemical instruments and methods, etc., can solve the problems of high operating cost, harsh conditions, low ozone utilization rate, etc., to increase water potential gradient, The effect of accelerating fruit ripening and improving drought resistance

Inactive Publication Date: 2019-01-25
何立肖 +3
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this technology is that the conditions are harsh, the treatment cost is high, it is difficult to be suitable for the industrial scale treatment of VC waste liquid, and it is only limited to laboratory research (Jiang Zhanpeng, Yang Hongwei, etc. Experimental research on the treatment of VC pharmaceutical wastewater by catalytic wet oxidation technology[J] . Water Supply and Drainage 2004, NO.3: 41-44.)
However, the disadvantages are that the utilization rate of ozone is low and the operating cost is high.
Another part of the waste, the mother liquor of guronic acid, has a high content of hydrochloric acid, a pH value below 1.0, and a COD value of 1×106 mg / L, which is difficult to handle and utilize, and seriously pollutes the environment. It is the focus and difficulty of waste treatment in VC production.

Method used

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  • Treatment method for gulonic acid mother liquor in VC production
  • Treatment method for gulonic acid mother liquor in VC production
  • Treatment method for gulonic acid mother liquor in VC production

Examples

Experimental program
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Effect test

manufacture Embodiment 1

[0030] Manufacture Example 1, processing gulongic acid mother liquor in the production of VC:

[0031] Hydrolysis treatment: Put the gulong acid mother liquor in VC production into the reaction device, raise the temperature to 121°C for 6 hours, and naturally cool down the temperature and pressure.

Embodiment 2

[0032] Embodiment 2, prepare fertilizer with the mother liquor of gulong acid in the production of VC by processing:

[0033] Neutralization treatment: Add potassium hydroxide to the cooled hydrolyzate in Example 1, stir evenly, neutralize at room temperature to pH 6-7, and become amino acid potassium fertilizer after stabilization. The amino acid content was determined by sampling to be 3.5%, and the potassium oxide content was 21%.

manufacture Embodiment 3

[0034] Manufacture Example 3, prepare amino acid potassium fertilizer:

[0035] (1) Hydrolysis treatment: put the gulong acid mother liquor in VC production into the reaction device, add penicillin slag with 20% by weight of the mother liquor, raise the temperature to 110°C for 8 hours, and naturally cool down the temperature and pressure;

[0036] (2) Neutralization treatment: add potassium hydroxide and magnesium hydroxide to step (1) at normal temperature. The ratio of potassium hydroxide to magnesium hydroxide is 20:1. During the reaction, take samples to measure the pH value. When the pH value reaches 4.5-5, stop adding alkali. After stabilization, it becomes amino acid potassium fertilizer. The amino acid content is 7.6% by sampling. Potassium oxide content is 12.5%.

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Abstract

The invention relates to treatment of a gulonic acid mother liquor in VC production, and a method for preparing a fertilizer by using a product obtained by the treatment, wherein the treatment of thegulonic acid mother liquor comprises: hydrolyzing original bacteria or externally added other bacterial residue in a waste liquid at a temperature of 105-121 DEG C by using hydrochloric acid containedin a gulonic acid mother liquor, and the hydrolyzate is neutralized with potassium hydroxide to achieve a pH value of 4-9 to produce an amino acid potassium fertilizer, or the amino acid potassium fertilizer as a culture medium is inoculated with 0.5-2% of Bacillus, and fermentation culture is performed to produce a microbial potassium fertilizer. According to the present invention, the method using the hydrochloric acid contained in the gulonic acid mother liquor or the method for treating the waste with the waste develops the new resource utilization way for the gulonic acid mother liquor,and further develops the new way for treating other waste bacterial residue.

Description

technical field [0001] The invention relates to the technical field of industrial waste water treatment, in particular to a method for treating gulong acid mother liquor in VC production and preparing agricultural fertilizer. Background technique [0002] Vitamin C (Vitamine C, hereinafter referred to as VC) is also known as ascorbic acid (ascorbic acid). It is a water-soluble vitamin widely used in the field of medicine and food. my country's VC production technology is based on the world's advanced level, using a two-step microbial fermentation process to directly convert D-sorbitol into 2-keto-L-gulonic acid, and then into VC. However, the amount of waste liquid produced by the production of vitamin C is relatively large, and 150-200 tons of waste liquid is generated for every ton of VC produced. It is estimated that my country currently produces more than 100,000 tons of VC annually, and discharges about 20 million tons of waste liquid every year. VC waste liquid mainl...

Claims

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Application Information

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IPC IPC(8): C05G1/00C05G3/00C02F1/02C02F103/36
CPCC02F1/025C02F2103/36C02F2301/066C05C11/00C05D1/00C05F11/08
Inventor 何立肖孙玉胜马兰何雪松
Owner 何立肖
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