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Novel method for recycling high-concentration organic wastewater

A technology of organic waste water and recycling, applied in the direction of fermentation, etc., can solve the problems that the economic, social and ecological benefits are not fully reflected, and achieve good environmental protection benefits

Inactive Publication Date: 2016-10-26
BINZHOU ZHONGYU FOOD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Overall, the economic, social and ecological benefits of this part of by-product resources have not been fully reflected

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0020] A new method for resource recycling of high-concentration organic wastewater, which is characterized in that it specifically includes the following steps:

[0021] (1) Wastewater pretreatment: adjust the pH of wastewater to 6.5~7.0;

[0022] (2) Sedimentation: use natural sedimentation to separate the insoluble substances of macromolecules in wastewater;

[0023] (3) Centrifugation: Centrifuge the sedimented supernatant with a centrifuge with a speed not less than 3000r / min to remove phytic acid;

[0024] (4) Ultrasonic-assisted enzymatic hydrolysis: Add 2% flavour protease and 2% papain to the supernatant after centrifugation, and enzymatically hydrolyze for 20 minutes under ultrasonic-assisted conditions at a temperature of 50-60 ℃, ultrasonic The power is 300W, and the mixer is used for uniform stirring during the period;

[0025] (5) Concentration: Concentrate the enzymolysis solution to 1 / 2~2 / 3 of the original volume;

[0026] (6) Isoelectric point precipitation: To eliminat...

Embodiment 2

[0033] A new method for resource recycling of high-concentration organic wastewater, which is characterized in that it specifically includes the following steps:

[0034] (1) Wastewater pretreatment: adjust the pH of wastewater to 6.5~7.0;

[0035] (2) Sedimentation: use natural sedimentation to separate the insoluble substances of macromolecules in wastewater;

[0036] (3) Centrifugation: Centrifuge the sedimented supernatant with a centrifuge with a speed not less than 3000r / min to remove phytic acid;

[0037] (4) Ultrasonic-assisted enzymatic hydrolysis: add 1% flavor protease and 1% papain to the supernatant after centrifugation, and enzymatically hydrolyze for 30 minutes under ultrasonic-assisted conditions. The enzymatic hydrolysis temperature is 50-60°C, ultrasonic The power is 300W, and the mixer is used for uniform stirring during the period;

[0038] (5) Concentration: Concentrate the enzymolysis solution to 1 / 2~2 / 3 of the original volume;

[0039] (6) Isoelectric point precip...

Embodiment 3

[0046] A new method for resource recycling of high-concentration organic wastewater, which is characterized in that it specifically includes the following steps:

[0047] (1) Wastewater pretreatment: adjust the pH of wastewater to 6.5~7.0;

[0048] (2) Sedimentation: Use natural sedimentation to separate out the macromolecular insoluble substances in the wastewater;

[0049] (3) Centrifugation: Centrifuge the sedimented supernatant with a centrifuge with a speed not less than 3000r / min to remove phytic acid;

[0050] (4) Ultrasonic-assisted enzymatic hydrolysis: Add 1.5% flavor protease and 1.5% papain to the supernatant after centrifugation, and enzymatically hydrolyze for 25 minutes under ultrasonic-assisted conditions. The enzymatic hydrolysis temperature is 50-60 ℃, ultrasonic The power is 300W, and the mixer is used for uniform stirring during the period;

[0051] (5) Concentration: Concentrate the enzymolysis solution to 1 / 2~2 / 3 of the original volume;

[0052] (6) Isoelectric poi...

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Abstract

The invention utilizes bio-enzymolysis and modern bio-separation technologies and provides a novel method for recycling high-concentration organic wastewater. The novel method has the advantages that through a preparation process coordinating gradient separation with ultrasonic-assisted secondary enzymolysis, functional active substances like protein and polysaccharide in the high-concentration organic wastewater generated during deep processing of wheat are fully separated out and biologically modified to obtain products like protein peptide and pentosan higher in functional activity. Under the process condition, up-to-standard discharging of the organic wastewater is realized, sewage treatment cost can be saved by more than 200 RMB for each ton of wastewater, and the environment-protection benefit is good.

Description

Technical field [0001] The invention relates to a new method for resource recycling of high-concentration organic wastewater, belonging to the technical field of comprehensive utilization of food processing by-products. Background technique [0002] As my country’s staple food crop, wheat, in addition to being converted into flour and flour products in large quantities, as my country’s grain output increases year by year, more and more wheat is used for deep processing and transformation. The most typical application is the production of wheat starch and gluten ( Wheat protein powder), wheat starch is further biologically fermented to produce alcohol. At present, two processes are usually used in the processing of wheat starch and gluten at home and abroad, one is the traditional dough washing gluten method (namely Martin method), and the other is the flour separation method (three-phase decanter method). Regardless of the method adopted, due to wet separation, a large amount of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P21/06C12P19/14C12P19/04C07K1/30
CPCC12P21/06C07K1/30C12P19/04C12P19/14
Inventor 张志强罗建华张志军王涛李怀健
Owner BINZHOU ZHONGYU FOOD
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