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A method for fully utilizing resources of rice protein production wastewater

A technology for producing rice protein and waste water, which is applied in chemical instruments and methods, biological water/sewage treatment, food industry waste water treatment, etc. It can solve the problems of difficult treatment, waste of resources, poor removal effect, etc., and achieve high bacterial protein content , high nutritional value and fast reproduction

Active Publication Date: 2022-04-01
WUXI JINNONG BIOTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the methods for treating rice protein sewage mainly include physical methods, chemical methods and biologically activated sludge methods, but physical methods cannot really remove organic matter in wastewater, and chemical methods have poor removal effects on high-concentration organic matter. Thorough, but the organic matter is wasted, and the biological activated sludge process load is high, the sludge generation is large, and it is difficult to treat
These methods all directly discharge the wastewater treatment, and fail to recycle the nutrients in it, resulting in a waste of resources

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A method for full resource utilization of rice protein production wastewater, said method comprising the steps of:

[0031] (1) Impurity removal: install a filter screen (40 mesh) at the entrance of the waste water tank to intercept the large particles of impurities in the rice protein waste water;

[0032] (2) Geotrichum candidum and yeast pre-treatment: into the rice protein wastewater after removing impurities, insert Geotrichum candidum and yeast liquid that account for 10% of the wastewater weight (the mass ratio of Geotrichum candidum to yeast is 1:1) , fermented for 24 hours at a temperature of 26° C.; the yeast was a mixture of Candida tropicalis, Candida utilis, and Candida lipolytica, in a weight ratio of 1:1:1;

[0033] (3) Photosynthetic bacteria post-treatment: insert photosynthetic bacteria liquid (purple non-sulfur bacteria) that accounts for 10% of the waste water weight into the waste water treated through step (2), ferment for 48h under the condition o...

Embodiment 2

[0038] A method for full resource utilization of rice protein production wastewater, said method comprising the steps of:

[0039] (1) Impurity removal: Install a filter screen (60 mesh) at the entrance of the waste water tank to intercept the large particles of impurities in the rice protein waste water;

[0040] (2) Geotrichum candidum and yeast pretreatment: into the rice protein wastewater after removing impurities, insert Geotrichum candidum and yeast liquid that account for 15% of the wastewater weight (the mass ratio of Geotrichum candidum to yeast is 1:2) , fermented for 20 hours at a temperature of 28° C.; the yeast is a mixture of Candida tropicalis, Candida lipolytica, and Endospora cystiscensus yeast, in a weight ratio of 1:1:1;

[0041](3) Photosynthetic bacteria post-treatment: insert photosynthetic bacteria liquid (Rhodopseudomonas globosa) accounting for 15% of the waste water weight into the waste water treated through step (2), and ferment for 36h under the c...

Embodiment 3

[0046] A method for full resource utilization of rice protein production wastewater, said method comprising the steps of:

[0047] (1) Impurity removal: Install a filter screen (80 mesh) at the entrance of the waste water tank to intercept the large particles of impurities in the rice protein waste water;

[0048] (2) Geotrichum candidum and yeast pretreatment: into the rice protein wastewater after removing impurities, insert Geotrichum candidum and yeast liquid (the mass ratio of Geotrichum candidum to yeast is 1:3) accounting for 20% of the waste water weight , fermented for 16h at a temperature of 30° C.; the saccharomyces mixed with Candida tropicalis, Candida utilis, Candida lipolytica, and Endospora cystiscensus yeast were in a weight ratio of 1: 1:1:1;

[0049] (3) photosynthetic bacteria post-treatment: insert photosynthetic bacteria liquid (purple non-sulfur bacteria and Rhodopseudomonas sphaeroides mixed with 20% of the waste water weight) into the waste water proc...

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PUM

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Abstract

The invention discloses a resource utilization method for rice protein production wastewater. The treatment method comprises the following steps: (1) separating impurities in rice protein production wastewater; (2) using Geotrichum candidum, yeast, photosynthetic Bacteria treat the rice protein wastewater after removal of impurities, and recover bacterial protein; (3) Ozone / hydrogen peroxide / activated carbon oxidation treatment is performed on the wastewater recovered from bacterial protein, and then reused. The invention realizes full utilization of waste water from rice protein production, the obtained bacterial protein can be used for animal feed, and the economic value is improved, and the waste water treated up to the standard can be used for production cleaning and flushing. The invention has the advantages of simple process, less equipment and low cost, and can fully utilize waste water as a resource.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a resource utilization method for rice protein production wastewater. Background technique [0002] Rice protein production has a large amount of wastewater. If it is discharged directly without treatment, on the one hand, a large amount of valuable nutrients such as protein, sugar, and fat contained in the wastewater will be lost, resulting in a waste of resources; on the other hand, this high-concentration organic wastewater will directly Discharged into rivers, lakes and seas, causing frequent occurrence of red tides and algal blooms, seriously polluting the environment. Therefore, how to effectively and efficiently treat rice protein wastewater is a thorny problem that enterprises must face. At the same time, how to use wastewater and change the status quo of wastewater treatment, which wastes resources and pollutes the environment, has become the focus of scientific research...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F103/32
CPCC02F9/00C02F3/34C02F1/722C02F1/78C02F1/001C02F1/283C02F2301/08C02F2103/32
Inventor 朱熹于秋生於慧利尹义敏
Owner WUXI JINNONG BIOTECH CO LTD