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Cyclic utilization method of wastewater from casein phosphoeptide production

A technology of casein phosphopeptide and protein phosphopeptide, which is applied in chemical instruments and methods, food industry wastewater treatment, adsorption water/sewage treatment, etc. It can solve the problems that wastewater cannot be recycled and protein cannot be effectively recovered, and achieve additional economy Good benefits, wide range of product applications, and small equipment footprint

Active Publication Date: 2013-09-04
甘南州科瑞乳品开发有限公司
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Problems solved by technology

At present, the production wastewater adopts the ordinary shallow sedimentation process, which cannot effectively recover protein, and the wastewater cannot be recycled.

Method used

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  • Cyclic utilization method of wastewater from casein phosphoeptide production

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Embodiment 1

[0028] A method for recycling waste water in the production of casein phosphopeptides, the steps of which are divided into:

[0029] a. Wastewater protein precipitation in casein phosphopeptide production

[0030] The proportion of waste water in the production of casein phosphopeptide is 1.010kg / L, the solid content is 1.156% (w / w), and the pH is 4.0-5.0. Add 5000ml of waste water to a 10000ml capped stainless steel container, pass compressed air at a rate of 1.5L / min at room temperature for 30min, and then let it stand for 30min to allow the protein gel to fully coagulate and precipitate, and the precipitated protein is centrifuged at 5000rmp, The recovered precipitated protein was vacuum-dried at 65° C. and 120 mmHg to obtain 2.8 g of recovered protein.

[0031] b. Wastewater ultrafiltration membrane filtration

[0032] After recovering the protein, the wastewater with a pH of 4.45, a specific gravity of 1.034kg / L, and a volume of 4825ml is filtered by roll membrane ultra...

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Abstract

The invention relates to a cyclic utilization method of wastewater in casein phosphoeptide production, comprising the following steps of: a, precipitating protein in wastewater from the casein phosphoeptide production; b, filtering wastewater by the use of an ultrafilter membrane; c, absorbing by active carbon and carrying out chromatography by ion exchange resin; and d, allowing intercepted water obtained from the step b to enter the step a for cycling treatment. With wastewater from the casein phosphoeptide production process used as a raw material and by the adoption of combined processes of inflation aggregation, centrifugal precipitation, membrane filtration, active carbon adsorption and ion exchange resin chromatography, industrial organic wastewater is used as a resource for comprehensive utilization, thus recycling water resources, fully recovering proteins in wastewater from production and realizing conversion from resource advantage to economic advantage. The technology provided by the invention is easy to control and stable, has a simple operation process, has good water treatment effects and high efficiency, and requires low equipment investment and operation cost. The method provided by the invention is environmentally friendly and energy-saving, had has good additional economic benefit. Its water treatment technology has a good application prospect in processing of wastewater from production of dairy product, casein and its highly processed products.

Description

technical field [0001] The invention relates to waste water treatment and recycling technology in food production. Background technique [0002] At present, more than 60% of the land in the world is short of fresh water, more than 40 countries are short of water, and 1 / 3 of the population cannot get safe water supply. my country's water resources are even more scarce, and the per capita water resources are only 1 / 3 of the world's per capita. 4. Water shortage is more serious especially in northern regions (Zhou Tong, Sewage reuse is an effective way to solve urban water shortage [J] Water Supply and Drainage, 2001, 27(1): 1-6). [0003] The treatment and reuse of industrial and domestic wastewater can alleviate the shortage of water resources in my country to a large extent and reduce the impact of sewage on the environment. According to my country's "Urban Sewage Treatment and Pollution Prevention and Control Technology Policy", in 2010, the average sewage treatment rate of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/02A23J1/16C02F1/52C02F1/44C02F1/28C02F1/42C02F103/32
Inventor 胡先望张瑞贞陈朋梁宁严晓娟郭天力广忠勇王雄
Owner 甘南州科瑞乳品开发有限公司
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