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Method of reusing magnetic material industry wastewater

A technology for industrial wastewater and magnetic materials, which is applied in ceramic wastewater treatment, chemical instruments and methods, water/sewage treatment, etc., can solve the problems of poor pH value, water quality and activity, and does not meet the water requirements of permanent magnet ferrite manufacturers. Reduce processing costs, remove suspended solids and oil, and protect the environment

Active Publication Date: 2019-04-05
SINOSTEEL TIANYUAN MAANSHAN TONGLI MAGNETIC MATERIAL
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  • 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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  • Method of reusing magnetic material industry wastewater
  • Method of reusing magnetic material industry wastewater
  • Method of reusing magnetic material industry wastewater

Examples

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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 tertiary 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 the ...

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 tertiary 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 the a...

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 tertiary 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 tre...

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Abstract

The invention discloses a method of reusing magnetic material industry wastewater and belongs to the technical field of production of magnetic materials. The method includes the specific steps of (1)pumping treated water of a wastewater pool into a sand filter, and allowing the filtered water to flow into a secondary pool; (2) placing efficient oil-absorbing cotton in the secondary pool, allowingto stand for 1-2 hours, and feeding into a tertiary pool through a water pump; (3) adding acetic acid into the tertiary pool, mixing well, adjusting pH of the solution to 6.5-7.6, and allowing to stand for 0.5-1 h; (4) adding a mixture mainly comprising sodium chloride into the mixed water, and stirring while adding; (5) pumping the treated water directly into a raw water circulating pool. The method has novel concept, is feasible, and is well effective in removing suspended solids and oil; after being treated by mixing and salinization, the water meets the standard of production required quality for magnetic material enterprises; water resources are reused; waste of the water resources is reduced.

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 Applications(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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