Treatment process for colored sewage in purple sweet potato powder production

A treatment process, purple potato powder technology, applied in the field of organic wastewater treatment process, to achieve good solubility, reduce difficulty, and improve clarity

Active Publication Date: 2016-02-03
QINGDAO PENGYUAN KANGHUA NATURAL PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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

Method used

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  • Treatment process for colored sewage in purple sweet potato powder production

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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 treatment process for colored sewage in purple sweet potato powder production. The treatment process comprises the following steps: (1) enzymatic hydrolysis: adjusting an acid environment, and adding composite enzyme into a mixture, and carrying out the enzymatic hydrolysis; (2) centrifuging to remove particle impurities in the colored waste water; (3) flocculation reaction: adding a flocculating agent into supernatant, further removing organic impurities, and improving the purity of pigments; (4) centrifuging to remove precipitates generated by the flocculation in the colored waste water; (5) porous resin purification: refining by using porous resin to further remove the impurities, and purifying the pigments; (6) concentrating an obtained desorption solution to obtain finished product pigments; (7) atomizing and drying to obtain powder finished product pigments. By adopting the treatment process, the sewage treatment problem of the waste water produced during the production process of the purple sweet potato cooked powder can be solved, the pigments also can be recovered, and the economic benefit can be achieved. Compared with the pigments obtained in a conventional extraction manner, the pigments are better in solubility, have the particular aromatic fragrance of purple sweet potato and are 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 powder. 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 ...

Claims

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Application Information

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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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