A kind of vegetable oil by-product processing wastewater treatment method

A technology for processing wastewater and treatment methods, which is applied in the fields of food industry wastewater treatment, biological water/sewage treatment, multi-stage water treatment, etc. low, the method is simple and easy to implement, and the effect of improving the water quality treatment effect

Active Publication Date: 2021-11-05
临沂明英工贸有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are many existing vegetable oil processing wastewater treatment methods, but usually one method alone is often ineffective. It is necessary to use multiple technologies for combined treatment according to the water quality characteristics of different wastewater and the components of pollutants to achieve ideal treatment effects.
However, the existing wastewater treatment methods have defects such as the system is too complicated, the operating cost is high, and the discharged wastewater after treatment is not up to standard.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A method for treating vegetable oil by-product processing wastewater, comprising the following steps:

[0019] (1) Add ferric polysilicate to the wastewater produced in the soybean oil refining process and let it stand for 8 hours, then filter it with filter cloth, and then further treat the filtrate and filter residue separately; the dosage of ferric polysilicate is 3g / L;

[0020] (2) Place the filter residue obtained in step (1) in an air dryer at 80-100°C for 10-20 minutes, then put it into a fermenter, add 2 times the amount of bentonite and 0.1% of the total solid weight of EM bacteria to it Fermentation is sealed and fermented for 3 days, the fermentation temperature is controlled at 30~32°C, and the stirring speed is 10-15r / min; after the fermentation is completed, the obtained fermentation product can be used directly as a fertilizer additive;

[0021] (3) Add an appropriate amount of sodium hydroxide to the filtrate to adjust the pH to 6.8~7.0, then add 10g / L c...

Embodiment 2

[0024] A method for treating vegetable oil by-product processing wastewater, comprising the following steps:

[0025] (1) Add ferric polysilicate to the wastewater produced in the soybean oil refining process and let it stand for 12 hours, then filter it with filter cloth, and then further treat the filtrate and filter residue separately; the dosage of ferric polysilicate is 5g / L;

[0026] (2) Place the filter residue obtained in step (1) in an air dryer, dry at 80-100°C for 10-20 minutes, then put it into a fermenter, add 2 times the amount of bentonite and 0.1-0.5% of the total solid weight The EM bacterial agent is sealed and fermented for 3 days, the fermentation temperature is controlled at 30~32°C, and the stirring speed is 10-15r / min; the fermentation product obtained after the fermentation is completed can be used directly as a fertilizer additive;

[0027] (3) Add an appropriate amount of sodium hydroxide to the filtrate to adjust the pH to 6.8~7.0, then add 20g / L com...

Embodiment 3

[0030] A method for treating vegetable oil by-product processing wastewater, comprising the following steps:

[0031] (1) Add ferric polysilicate to the wastewater produced in the soybean oil refining process and let it stand for 10 hours, then filter it with filter cloth, and then further treat the filtrate and filter residue separately; the dosage of ferric polysilicate is 4g / L;

[0032] (2) Place the filter residue obtained in step (1) in an air dryer, dry at 80-100°C for 10-20 minutes, then put it into a fermenter, add 2 times the amount of bentonite and 0.1-0.5% of the total solid weight The EM bacterial agent is sealed and fermented for 3 days, the fermentation temperature is controlled at 30~32°C, and the stirring speed is 10-15r / min; the fermentation product obtained after the fermentation is completed can be used directly as a fertilizer additive;

[0033] (3) Add an appropriate amount of sodium hydroxide to the filtrate to adjust the pH to 6.8~7.0, then add 15g / L com...

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PUM

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Abstract

The invention discloses a method for treating vegetable oil by-product processing wastewater, which belongs to the technical field of wastewater treatment. The method adopts a combined physical-chemical-biological treatment method, the method is simple and easy to implement, the treatment effect is good, the effluent water quality COD is less than or equal to 30mg / L, and the operation cost is low. Moreover, the composite microbial bacterial agent used in the present invention has a good effect on water quality treatment, and the water quality of the soybean oil production wastewater treated by the method of the present invention fully meets the national first-class discharge standard.

Description

technical field [0001] The invention relates to a treatment method for production wastewater, in particular to a treatment method for vegetable oil by-product processing wastewater. Background technique [0002] Soybean oil contains 7-10% palmitic acid, 2-5% stearic acid, 1-3% arachidic acid, 22-30% oleic acid, 50-60% linoleic acid and 5-9% linoleic acid. The fatty acid composition of soybean oil is good. It is rich in linoleic acid, which can significantly reduce serum cholesterol levels and prevent cardiovascular diseases. Soybean also contains a large amount of vitamin E, vitamin D and rich lecithin, which is beneficial to the human body. Both are very beneficial for health. In addition, the human digestion and absorption rate of soybean oil is as high as 98%, so soybean oil is an excellent edible oil with high nutritional value. With the continuous improvement of people's health awareness, soybean oil is loved by more and more people. With the increasing number of con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C05G3/80C02F103/32
CPCC02F9/00C05D9/00C02F1/5245C02F1/001C02F1/66C02F3/34C02F2103/32C02F2209/08C02F2209/14C02F2209/06C02F2301/08C05G3/80
Inventor 单夫博单夫峰董勤德
Owner 临沂明英工贸有限公司
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