Treatment method of soybean lactalbumin waste water

A technology for soybean whey wastewater and soybean whey water, which is applied in the fields of water/sewage multi-stage treatment, water/sludge/sewage treatment, infiltration/dialysis water/sewage treatment, etc. The protein cannot be completely precipitated and other problems, so as to reduce the load, reduce energy consumption, and increase work efficiency.

Inactive Publication Date: 2006-03-29
WUHAN SAIPU FILM TECH
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  • Abstract
  • Description
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Problems solved by technology

[0003] 1. Active ingredients such as protein and oligosaccharides in soybean whey wastewater are discharged with water, wasting resources;
[0004] 2. Water resources are not recycled;
[0005] 3. The investment in wastewater treatment facilities is large, and the operation and management costs are high;
[0006] 4. The treated water is not easy to discharge in a stable manner
[0008] 1. The organic membrane used in the scheme is not resistant to acid and alkali due to the limitation of the material, and the worki

Method used

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  • Treatment method of soybean lactalbumin waste water

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Embodiment Construction

[0026] A production plant with an annual output of 2,500 tons of soybean protein isolate, producing 250m of soybean whey water per day 3 , of which protein is 0.41%, total sugar is 0.77%, including oligosaccharides is 0.63%, and sucrose is 0.14%. It is designed to work 20 hours a day, and the average whey is 12.5m per hour. 3 . First, the whey water is pumped into the ultrafiltration membrane separation system for treatment. The ultrafiltration membrane is an inorganic ceramic composite membrane with a molecular weight cut-off of 10KD and is highly resistant to protein pollution. The separated concentrate has 15m 3 , which contains 5.8% protein, sent to the protein storage tank to adjust the pH value to neutral, after double-effect evaporation and concentration, it will be spray-dried to obtain 1.3 tons of protein powder with a protein content of 65%; the filtrate after ultrafiltration separation is 230m 3 Handed over to the nanofiltration membrane separation system, the nan...

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Abstract

A process for treating the sewage generated by preparing soybean whey includes such steps as using the composite ultrafiltering inorganic ceramic membrane to separate alkaline protein from said sewage, nano-filtering for separating out oligose, reverse osmosis for removing inorganic salt, monosaccharide and ammino acids to obtain clean water to be reused, and further treating the protein and oligose to obtain pure protein and oligose.

Description

technical field [0001] The invention relates to a method for treating soybean whey wastewater, and extracts oligosaccharides and proteins from the soybean whey wastewater. Background technique [0002] The soybean whey wastewater referred to in the present invention is the organic wastewater produced after the soybean meal is alkali-dissolved, acid-precipitated, and centrifuged to extract protein during the production of soybean protein isolate from low-temperature defatted soybean meal, which contains proteins, oligosaccharides, etc. substance. Protein content 0.4-0.6%; water-soluble sugar 0.6-0.8%; suspended matter 0.7%; pH=4.4-4.8; chemical oxygen demand COD: 18000-20000mg / L; biochemical oxygen demand BOD: 8000-9000mg / L. At present, production enterprises generally use traditional pollution control processes such as anaerobic and oxygen consumption to treat soybean whey wastewater and then discharge it. The main problem is: [0003] 1. Active i...

Claims

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Application Information

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IPC IPC(8): C02F9/02C02F1/44B01D61/14B01D61/02
Inventor 万端极王广润凌秀菊高林霞王秀霞
Owner WUHAN SAIPU FILM TECH
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