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A method for reusing waste water in magnetic material industry

A technology for industrial wastewater and magnetic materials, applied in ceramic wastewater treatment, chemical instruments and methods, water/sewage treatment, etc., can solve problems such as non-compliance with the water requirements of permanent ferrite manufacturers, poor pH value and water quality activity

Active Publication Date: 2021-04-23
SINOSTEEL TIANYUAN MAANSHAN TONGLI MAGNETIC MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Aiming at the problems that the existing treated water contains a small amount of suspended solids and oil, the pH value is too high, and the water quality is poor, and it does not meet the water requirements of permanent magnet ferrite manufacturers, the invention provides a waste water recycling method for the magnetic material industry. Using the method, the treated water is directly used as the production water of permanent magnet ferrite, so as to realize the recycling of water resources, reduce the waste of water resources, and save production costs

Method used

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  • A method for reusing waste water in magnetic material industry
  • A method for reusing waste water in magnetic material industry
  • A method for reusing waste water in magnetic material industry

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] A method for treating emulsion wastewater in the magnetic material industry, the specific process is shown in figure 1 , follow the steps below:

[0053] (1) The first step of filtration: pump the water from the treated wastewater pool (primary pool) into the gravel filter, and the filtered water flows into the secondary pool;

[0054] (2) The second step of oil absorption: place high-efficiency oil-absorbing cotton in the secondary pool, and after standing for 1 hour, pump it into the next pool (tertiary pool);

[0055] (3) The third step of preparation: add acetic acid with a concentration of 36% in the three-stage pool, the addition amount is 1ml / L, the stirring speed is 50r / min, stir evenly, adjust the pH value of the solution to 7.6, and let it stand for 0.5h ;

[0056] (4) The third step of salinization: add sodium chloride to the prepared water, the addition amount is 0.2mg / L, the stirring speed is 50r / min, and stir while adding;

[0057] (5) The water after t...

Embodiment 2

[0060] A method for treating emulsion wastewater in the magnetic material industry is specifically carried out according to the following steps:

[0061] (1) The first step of filtration: pump the water from the treated wastewater pool (primary pool) into the gravel filter, and the filtered water flows into the secondary pool;

[0062] (2) The second step of oil absorption: place high-efficiency oil-absorbing cotton in the secondary pool, let it stand for 1.5 hours, and then pump it into the next pool (tertiary pool);

[0063] (3) The third step of preparation: add acetic acid with a concentration of 37% in the three-stage pool, the addition amount is 2ml / L, the stirring speed is 70r / min, stir evenly, adjust the pH value of the solution to 7.3, and let it stand for 0.75h ;

[0064] (4) The third step of salinization: add sodium chloride to the prepared water, the addition amount is 0.4mg / L, the stirring speed is 70r / min, and stir while adding;

[0065] (5) The water after th...

Embodiment 3

[0068] A method for treating emulsion wastewater in the magnetic material industry is specifically carried out according to the following steps:

[0069] (1) The first step of filtration: pump the water from the treated wastewater pool (primary pool) into the gravel filter, and the filtered water flows into the secondary pool;

[0070] (2) The second step of oil absorption: place high-efficiency oil-absorbing cotton in the secondary pool, and after standing for 2 hours, pump it into the next pool (tertiary pool);

[0071] (3) The third step of preparation: add acetic acid with a concentration of 38% in the third-stage pool, the addition amount is 3ml / L, the stirring speed is 100r / min, stir evenly, adjust the pH value of the solution to 7.1, and let it stand for 1h;

[0072] (4) The third step of salinization: add sodium chloride to the prepared water, the addition amount is 0.5mg / L, the stirring speed is 100r / min, and stir while adding;

[0073] (5) The water after the above ...

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Abstract

The invention discloses a method for reusing waste water in the magnetic material industry, and belongs to the technical field of magnetic material production. The method is specifically carried out according to the following steps: (1) pump the water in the treated waste water pool into the gravel filter, and the filtered water flows into the secondary pool; (2) place high-efficiency oil-absorbing cotton in the secondary pool and let it stand After 1 to 2 hours, pump it into the tertiary pool; (3) add acetic acid to the tertiary pool, stir evenly, adjust the pH value of the solution to 6.5-7.6, and let it stand for 0.5-1h; (4) after the preparation process Add the mixture whose main component is sodium chloride into the water, and stir while adding; (5) The treated water is directly pumped into the raw material water circulation pool. The method is novel in conception, feasible in method, and has good effect of removing suspended solids and oil. After modulation and salinization, it can meet the water quality standards required by magnetic material enterprises, recycle water resources, and reduce waste of water resources.

Description

technical field [0001] The invention belongs to the technical field of waste water treatment and recovery, and more specifically relates to a method for reusing waste water in the magnetic material industry. Background technique [0002] In recent years, with the growth of the national economy, the demand for high-grade magnets for automobiles, home appliances and computers has increased, and the magnetic material industry has developed rapidly. The blank and the mold stick together, so a large amount of emulsion-containing wastewater will be discharged. Emulsion wastewater contains emulsifier, release agent and mineral oil, etc. The appearance is milky white and dark yellow, with a strong rancid smell, which seriously pollutes the environment; in order to improve the performance of the emulsion, a large number of additives are added to the emulsion, such as oily Additives, extreme pressure additives, anti-rust additives, etc. make the composition of the emulsion extremely ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/04C02F103/12
CPCC02F1/001C02F1/66C02F1/681C02F1/683C02F9/00C02F2103/12
Inventor 李劲松刘静蒋伟丽杨冲陈军张桂明张先涛张纪孙正
Owner SINOSTEEL TIANYUAN MAANSHAN TONGLI MAGNETIC MATERIAL
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