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Method for concentrating waster solution from process for processing seafood

A technology of processing and waste liquid, applied in separation methods, chemical instruments and methods, heating water/sewage treatment, etc., can solve problems such as high processing costs, inability to carry out large-scale production, and limited processing conditions, so as to reduce labor intensity, Achieve recycling and clean production, reduce the effect of quantity

Inactive Publication Date: 2009-04-08
HANGZHOU WATER TREATMENT TECH DEV CENT
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Problems solved by technology

However, at present, the protein concentrate is mainly extracted by cooking method, and 1 ton of oyster sauce can be obtained by cooking 10 tons of cooking waste liquid, which needs to consume 1.5 tons of coal. The processing cost is high, the processing technology and processing conditions are limited, and large-scale production cannot be carried out. The cooking liquid is fully utilized

Method used

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  • Method for concentrating waster solution from process for processing seafood
  • Method for concentrating waster solution from process for processing seafood

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Embodiment Construction

[0019] The invention provides a method for concentrating the waste liquid produced in the processing of seafood based on the combined membrane separation technology. It adopts the combined technology of membrane separation and at the same time sets a closed-circuit circulation process, which can significantly reduce energy consumption. Low power consumption, low operating cost and good treatment effect.

[0020] Refer to attached picture. It sequentially includes the following process steps:

[0021] 1) Cooling, using a circulating water cooling system or a seawater direct-flow cooling water system for the cooking waste liquid of seafood to cool the cooking liquid at 90-98°C to 20-30°C.

[0022] 2) Adjust the pH value: adjust the pH value to the isoelectric point of seafood protein (pH4.5-5.8).

[0023] 3) Microfiltration membrane separation and impurity removal: pump into the microfiltration membrane separation process to remove impurities such as colloids, organic matter, ...

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Abstract

The invention provides a method for concentrating waste liquid generated when marine products are processed, which orderly comprises the following processing steps: 1) the waste liquid is cooled down to the temperature of between 20 and 30 DEG C; 2) the pH value of the waste liquid is adjusted to between 4.5 and 5.8; 3) impurity removal; 4) desalting; 5) dewatering; and 6) concentration by evaporation. The method has the advantages of obviously lowering the energy consumption, improving the working efficiency and reducing labor intensity; simultaneously, film permeating water can be used as good-quality process water for reutilization, thereby realizing the reutilization and clean production, avoiding the environmental pollution due to massive discharge of pollutants and emphasizing on economic benefits as well as social benefits so as to realize the win-win.

Description

technical field [0001] The invention relates to a method for concentrating waste liquid produced in the process of seafood processing. Background technique [0002] The 21st century is the century of the ocean, and human beings have reached an unprecedented stage in developing and utilizing the ocean. In recent years, my country has made great progress in using marine organisms as health products, cosmetics and functional foods, and has developed many health products, cosmetics, food, condiments, etc. [0003] The processing and production of cooked seafood will produce some processing waste liquid. For example, the processing and production of cooked mussels will produce mussel cooking waste liquid. It has been proved that 0.3 tons of mussel cooking waste liquid will be produced for every ton of mussels cooked. Studies have shown that cooking waste liquid contains a large amount of trace elements such as proteins, amino acids, fatty acids, vitamins, and sugars that are ben...

Claims

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Application Information

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IPC IPC(8): C02F9/10C02F1/66C02F1/42C02F1/469C02F1/44C02F1/04
Inventor 张希建张建中谭斌樊雄谭永文
Owner HANGZHOU WATER TREATMENT TECH DEV CENT
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