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A kind of soybean protein whey wastewater treatment process

A whey wastewater and treatment process technology, which is applied in the field of soybean protein whey wastewater treatment process, can solve the problems of pungent sour smell and affect the production environment, so as to solve the sour smell, reduce bacteria, and facilitate anaerobic biochemical treatment Effect

Active Publication Date: 2017-12-08
KEDONG YUWANG SOY PROTEIN FOOD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The whey wastewater needs to be pre-acidified before adding polyaluminum flocculation. The pre-acidification mainly precipitates some components through the growth and reproduction of microorganisms, so there is always a pungent sour smell in the subsequent treatment process, which affects the production environment.

Method used

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  • A kind of soybean protein whey wastewater treatment process
  • A kind of soybean protein whey wastewater treatment process
  • A kind of soybean protein whey wastewater treatment process

Examples

Experimental program
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Effect test

Embodiment 1

[0051] A kind of soybean protein whey wastewater treatment process, it comprises the steps:

[0052] (1) Temperature adjustment: adding steam to the soybean whey wastewater for temperature control, the temperature range is 30°C;

[0053] (2) Tempering 1: Add titanium dioxide waste acid solution (concentration 12.0%) to the whey wastewater after temperature adjustment, adjust the pH to 1.5, and the reaction time is 30 minutes;

[0054] (3) Tempering 2: Add calcium hydroxide solution with a concentration of 10.0% to the solution to adjust the pH to 5.5, and the reaction time is 10 minutes;

[0055] (4) Air flotation 1: Add 10ppm anionic amide in the solution, mix it through a mixer and enter the air flotation machine 1 for air flotation, the solid phase enters the scum pool, and the liquid phase 1 enters the next process;

[0056] (5) Tempering 3: add calcium hydroxide solution with a concentration of 10.0% to the liquid phase 1, adjust the pH to 12.0, and the reaction time is 20...

Embodiment 2

[0061] A kind of soybean protein whey wastewater treatment process, it comprises the steps:

[0062] (1) Temperature adjustment: adding steam to the soybean whey wastewater for temperature control, the temperature range is 30°C;

[0063] (2) Tempering 1: Add titanium dioxide waste acid solution (concentration 8.0%) to the whey wastewater after temperature adjustment, adjust the pH to 1.5, and the reaction time is 30 minutes;

[0064] (3) Conditioning 2: Calcium hydroxide solution with a concentration of 10.0% was added to the solution to adjust the pH to 5.5, and the reaction time was 10 minutes;

[0065] (4) Air flotation 1: Add 10ppm anionic amide in the solution, mix it through a mixer and enter the air flotation machine 1 for air flotation, the solid phase enters the scum pool, and the liquid phase 1 enters the next process;

[0066] (5) Tempering 3: add calcium hydroxide solution with a concentration of 10.0% to the liquid phase 1, adjust the pH to 12.0, and the reaction...

Embodiment 3

[0071] A kind of soybean protein whey wastewater treatment process, it comprises the steps:

[0072] (1) Temperature adjustment: adding steam to the soybean whey wastewater for temperature control, the temperature range is 30°C;

[0073] (2) Tempering 1: add titanium dioxide waste acid solution (concentration 20.0%) to the whey wastewater after temperature adjustment, adjust the pH to 1.5, and the reaction time is 30 minutes;

[0074] (3) Conditioning 2: Calcium hydroxide solution with a concentration of 10.0% was added to the solution to adjust the pH to 5.5, and the reaction time was 10 minutes;

[0075] (4) Air flotation 1: Add 10ppm anionic amide in the solution, mix it through a mixer and enter the air flotation machine 1 for air flotation, the solid phase enters the scum pool, and the liquid phase 1 enters the next process;

[0076] (5) Tempering 3: add calcium hydroxide solution with a concentration of 10.0% to the liquid phase 1, adjust the pH to 12.0, and the reactio...

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Abstract

The invention provides a soy protein whey wastewater treatment technology. The soy protein whey wastewater treatment technology comprises the following steps of 1, temperature regulation, 2, hardening and tempering 1, 3, hardening and tempering 2, 4, air floatation 1, 5, hardening and tempering 3, 6, air floatation 2 and 7, hardening and tempering 4. The soy protein whey wastewater treatment technology solves the problems that according to an existing pretreatment technology, the COD removal rate is low, aluminum ion residues are caused by flocculating agent polymeric aluminum, the unit treatment cost is high, and the enterprise operating cost is increased, so that anaerobic and aerobiotic working procedure loads are high.

Description

technical field [0001] The invention relates to the field of wastewater treatment, in particular to a soybean protein whey wastewater treatment process. Background technique [0002] Deep processing of soybeans, such as the production of soybean protein isolate, soybean protein concentrate, tofu, dried tofu, yuba, etc., produces a large amount of whey wastewater. Whey contains a large amount of protein, sugar and other organic matter and a small amount of inorganic salt. Whey wastewater is characterized by high organic matter content, high protein content, easy acidification, and strong biodegradability. [0003] Whey wastewater treatment has always been one of the important factors restricting the development of soybean deep-processing enterprises. Most soybean deep-processing enterprises use a combination of anaerobic and aerobic biochemical treatment processes for whey wastewater treatment. The quality of whey wastewater pretreatment directly affects anaerobic Oxygen and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F101/20C02F103/32
CPCC02F1/24C02F1/66C02F3/28C02F9/00C02F2101/20C02F2103/32
Inventor 刘汝萃王彩华李顺秀刘军
Owner KEDONG YUWANG SOY PROTEIN FOOD CO LTD