Treatment process of colored sewage in the production of purple sweet potato flour

A treatment process, a technology of purple potato powder, is applied in the field of organic wastewater treatment technology to achieve the effects of reducing difficulty, being beneficial to transportation and preservation, and saving energy consumption

Active Publication Date: 2017-10-03
QINGDAO PENGYUAN KANGHUA NATURAL PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the problems existing in the prior art, the purpose of the present invention is to provide a treatment process for colored sewage in the production of purple sweet potato powder, which not only solves the problem of sewage treatment of wastewater generated during the production of cooked purple sweet potato powder, but also recycles the pigment therein to generate economical benefit

Method used

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  • Treatment process of colored sewage in the production of purple sweet potato flour

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Comparison scheme
Effect test

Embodiment 1

[0031] Such as figure 1 Shown, the treatment process of colored sewage in the production of purple sweet potato powder is characterized in that, specifically comprises the following steps:

[0032] (1) Enzymolysis reaction: Add citric acid solution to steam condensation wastewater from the production of cooked purple potato powder, adjust the pH value to 3-5, and provide a suitable pH environment for the subsequent enzymolysis reaction. When the temperature drops to 45°C, Using the heat of steam cooking can effectively save the energy consumption of enzymatic hydrolysis reaction. Add 0.6% pectinase to the mixture and react for 1 hour. The enzymatic hydrolysis reaction can decompose pectin, protein, starch and other organic substances in colored wastewater. ingredients, making the product clarity and transparency improved;

[0033] (2) Centrifugation: place the mixture in a centrifuge to control the rotational speed to 3500rpm / min, centrifuge for 5-10 minutes, remove the granu...

Embodiment 2

[0040] Such as figure 1 Shown, the treatment process of colored sewage in the production of purple sweet potato powder is characterized in that, specifically comprises the following steps:

[0041] (1) Enzymolysis reaction: add hydrochloric acid solution to the steam condensation wastewater from the production of cooked purple potato powder, adjust the pH value to 3-5, and provide a suitable pH environment for the subsequent enzymolysis reaction. When the temperature drops to 45°C, use The heat during steam cooking can effectively save the energy consumption of the enzymatic hydrolysis reaction. Add 1% amylase to the mixture and react for 2 hours. The enzymatic hydrolysis reaction can decompose organic components such as pectin, protein, and starch in the colored wastewater. Improve product clarity and transparency;

[0042] (2) Centrifugation: place the mixture in a centrifuge to control the rotating speed to 3500rpm / min, centrifuge for 5 minutes, remove the granular impurit...

Embodiment 3

[0049] Such as figure 1 Shown, the treatment process of colored sewage in the production of purple sweet potato powder is characterized in that, specifically comprises the following steps:

[0050] (1) Enzymolysis reaction: add sulfuric acid solution to the steam condensation wastewater from the production of cooked purple potato powder, adjust the pH value to 3-5, and provide a suitable pH environment for the subsequent enzymolysis reaction. When the temperature drops to 60°C, use The heat during steam cooking can effectively save the energy consumption of enzymatic hydrolysis reaction. Add 0.3% compound enzyme composed of pectinase, amylase and protease to the mixture according to the weight ratio of 1:3:0.5, and react for 1.5 hours. The hydrolysis reaction can decompose pectin, protein, starch and other organic components in the colored wastewater, so that the clarity and transparency of the product can be improved;

[0051] (2) Centrifugation: place the mixture in a centr...

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Abstract

The invention discloses a process for treating colored sewage in the production of purple sweet potato powder, which specifically comprises the following steps: (1) enzymatic hydrolysis reaction, adding compound enzyme enzymatic hydrolysis reaction to the mixture in an acidic environment; (2) centrifugation, removing colored sewage Granular impurities in wastewater; (3) flocculation reaction: add flocculant to supernatant to further remove organic impurities and improve the purity of pigment; (4) centrifuge to remove precipitates produced by flocculation of colored wastewater; (5) large Porous resin purification and refining, further removing impurities through macroporous resin refining, and purifying the pigment; (6) Concentrating to obtain analytic solution concentrated into a finished pigment; (7) Spray drying to obtain a powdered finished pigment. The invention not only solves the problem of sewage treatment of waste water generated during the production of cooked purple sweet potato powder, but also recovers the pigment therein to generate economic benefits. And the pigment thus obtained has better solubility than the pigment obtained by conventional extraction, and has the unique aroma of purple sweet potato, and is more convenient to use.

Description

technical field [0001] The invention belongs to the technical field of the treatment process of colored organic wastewater produced in the process of processing colored vegetables and fruits, and in particular relates to the treatment process of colored sewage in the production of purple sweet potato flour. Background technique [0002] Purple potato is also called black potato, and the potato flesh is purple to dark purple. In addition to the nutrients of ordinary sweet potatoes, it is also rich in selenium and anthocyanins. Anthocyanins have preventive and therapeutic effects on more than 100 diseases, and are known as the seventh essential nutrient after water, protein, fat, carbohydrates, vitamins, and minerals. Anthocyanins are the most direct, effective and safe free radical scavenger discovered by the scientific community to prevent and treat diseases and maintain human health. Its ability to scavenge free radicals is 20 times that of vitamin C and 50 times that of v...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C09B61/00C02F103/32
Inventor 展康华展亚莉刘晓波周红李进超
Owner QINGDAO PENGYUAN KANGHUA NATURAL PROD
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