Integreted tech., or treating yellow ginger processing and waste water

A technology for wastewater treatment and turmeric, applied in water/sewage treatment, neutralized water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of turmeric processing industry pollution, waste of resources, etc., and achieve obvious integration characteristics , the full utilization of resources, the effect of increasing the added value of the industry

Inactive Publication Date: 2006-06-28
PEKING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] Aiming at the serious pollution and waste of resources currently existing in the turmeric processing industry, the present invention proposes a set of clean production integration process

Method used

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  • Integreted tech., or treating yellow ginger processing and waste water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] 1.2kg of soaked turmeric is pretreated to recover 74% of the total cellulose and 75% of the total starch slurry, and through biological enzymatic conversion, 64% of the starch is converted into glucose products, and the glucose conversion rate is 85% , after acid hydrolysis, the yield of saponin by supercritical extraction process reaches 82%, and the purity of saponin is 94% after testing.

[0050] 62 g of Bacillus thuringiensis microbial insecticide can be obtained through the steps of pretreatment, strain domestication, medium supplementation, seed tank fermentation, fermentation tank fermentation and fermentation liquid post-treatment steps using the hydrolyzed waste liquid produced in the process.

[0051] The technological process produces a total of 500ml of wastewater, the concentration of COD is 46000mg / L, and the concentration of SO 4 2- The concentration is 24600mg / L, NH 4 + -N concentration is 900mg / L, after the high-efficiency microbial treatment of indu...

Embodiment 2

[0053] 1.4kg soaked turmeric is pretreated to recover 75% of the total amount of cellulose and 70% of the total amount of starch slurry, and through biological enzymatic conversion, 66% of the starch slurry is converted into glucose products, and the conversion rate of glucose is 80% %, the yield of saponin by supercritical extraction process after acid hydrolysis reaches 82%, and the purity of saponin is 95% after testing.

[0054] 71g of Bacillus thuringiensis microbial insecticide can be obtained through the steps of pretreatment, strain domestication, medium supplementation, seed tank fermentation, fermenter fermentation and fermentation broth post-treatment steps using the hydrolyzed waste liquid produced in the process.

[0055] The technological process produced a total of 578ml of wastewater, the concentration of COD was 45000mg / L, and the concentration of SO 4 2- The concentration is 24400mg / L, NH 4 + -N concentration is 890mg / L, after the high-efficiency microbial...

Embodiment 3

[0057] 1.3kg of soaked turmeric is pretreated to reclaim 75% of the total cellulose and 72% of the total starch slurry. Through biological enzymatic conversion, 67% of the starch slurry is converted into glucose products, and the glucose conversion rate is 81. %, the yield of saponin by supercritical extraction process after acid hydrolysis reaches 80%, and the purity of saponin is 95% after testing.

[0058] 64 g of Bacillus thuringiensis microbial insecticide can be obtained through the steps of pretreatment, strain domestication, medium supplementation, seed tank fermentation, fermentation tank fermentation and fermentation liquid post-treatment steps using the hydrolyzed waste liquid produced in the process.

[0059] The technological process produces a total of 550ml of wastewater, the concentration of COD is 46000mg / L, and the concentration of SO 4 2- The concentration is 24700mg / L, NH 4 + -N concentration is 900mg / L, after the high-efficiency microbial treatment of i...

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Abstract

An integrated process for preparing the products from yam and treating its sewage includes such steps as physical separation to obtain cellulose and starch paste, liquefying and saccharifying the starch paste to obtain sugar dreg, fermenting and acidolyzing to obtain saponin, transferring sugar liquid to obtain glocose, using the hydrolyzed sewage to prepare Bacillus thuringienis insecticide, and treating sewage.

Description

technical field [0001] The invention belongs to a substance treatment process, in particular to an integrated process from turmeric processing to wastewater treatment. The pollutants discharged into the sewage in the traditional production process - turmeric cellulose and starch slurry are fully utilized to achieve full utilization of resources and clean production without pollution. In addition to obtaining the main product saponin, this process also obtains by-products cellulose, glucose, and Bacillus thuringiensis microbial pesticides; the treatment of turmeric wastewater not only solves the problems of serious pollution and waste of resources in this industry, but also increases the added value of the industry . Background technique [0002] Yellow ginger is a unique species in my country. Its scientific name is Dioscorea shield leaf. It is a medicinal plant. Its main economic value is to use its rhizome to extract diosgenin, which is known as "the gold in medicine" in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/66A01N63/02C02F1/58C02F3/30C08B30/00C13K1/00D21C5/00
CPCY02P20/10
Inventor 倪晋仁王志民叶正芳黄文
Owner PEKING UNIV
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