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Water treatment method for urgently treating aniline pollution in drinking water

A technology for emergency treatment and drinking water, applied in the directions of oxidized water/sewage treatment, water/sludge/sewage treatment, water pollutants, etc., can solve the problem of poor removal of aniline pollution, etc. Effective utilization, the effect of broad prospects for promotion

Inactive Publication Date: 2019-03-29
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the conventional treatment process of the water supply plant has poor removal effect on sudden aniline pollution in raw water, the present invention provides a water treatment method for emergency treatment of aniline pollution in drinking water, and provides an effective method for aniline pollution accidents in drinking water Treatment process

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  • Water treatment method for urgently treating aniline pollution in drinking water

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specific Embodiment approach 1

[0019] Embodiment 1: This embodiment provides a water treatment method for emergency treatment of aniline pollution in drinking water. The specific implementation steps of the method are as follows:

[0020] Step 1: adding ozone to the raw water containing aniline;

[0021] Step 2: adding sodium hypochlorite to the aniline raw water treated with ozone in step 1, the effective removal of aniline from the water can be realized.

[0022] The removal rate of aniline by ozone increases with the increase of ozone concentration. This is because with the increase of ozone concentration, the amount of hydroxyl radicals produced in water gradually increases, and the speed is faster and faster, so the removal effect of aniline burst pollutants is getting better and better. However, the dosage of ozone is not as large as possible. Excessive dosage of ozone will not only increase the cost of water treatment, but also have a negative impact on the effect of ozone on removing aniline. Beca...

specific Embodiment approach 2

[0023] Specific embodiment two: This embodiment provides a water treatment method for emergency treatment of aniline pollution in drinking water, and the specific implementation steps of the method are as follows:

[0024] Step 1: Add ozone to the raw water containing 10.23mg / L aniline, wherein: the dosage of ozone is 1.6mg / min, and the ozone contact oxidation time is 10min;

[0025] Step 2: Adding sodium hypochlorite to the aniline raw water treated with ozone in step 1 can effectively remove aniline from the water, wherein the concentration ratio of sodium hypochlorite to aniline is 7.5:1.

[0026] The average removal rate of aniline pollutants in raw water by the method of this embodiment is 96.3%. It can be seen that the water treatment method of this embodiment can have a good removal effect on aniline pollutants in raw water. After the water treated by the method of this embodiment is treated by other subsequent water treatment structures such as sand filtration and biol...

specific Embodiment approach 3

[0028] Specific implementation mode three: This implementation mode provides a water treatment method for emergency treatment of aniline pollution in drinking water, and the specific implementation steps of the method are as follows:

[0029] Step 1: Add ozone to the raw water containing 10.68mg / L aniline, wherein: the dosage of ozone is 1mg / min, and the ozone contact oxidation time is 15min;

[0030] Step 2: Adding sodium hypochlorite to the aniline raw water treated with ozone in step 1 can effectively remove aniline from the water, wherein the concentration ratio of sodium hypochlorite to aniline is 10:1.

[0031] The average removal rate of aniline pollutants in raw water by the method of this embodiment is 98.5%. It can be seen that the water treatment method of this embodiment can have a good removal effect on aniline pollutants in raw water. After the water treated by the method of this embodiment is treated by other subsequent water treatment structures such as sand fi...

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Abstract

The invention discloses a water treatment method for urgently treating aniline pollution in drinking water. The method comprises the following steps: 1) adding ozone into aniline-containing raw water,wherein dosage of ozone is 0.5-2mg / min and catalytic oxidation time of ozone is 10-20min; 2) adding sodium hypochlorite into the aniline-containing raw water after ozone treatment, thereby effectively removing aniline from water, wherein the dosage of sodium hypochlorite is determined according to the content of aniline in water and the concentration ratio of sodium hypochlorite to aniline is at7.5-15. According to the water treatment method disclosed by the invention, ozone and sodium hypochlorite are combined for synergistically oxidizing aniline; the maximal removal rate of aniline pollutants in raw water can reach up to 98.5%; sudden high-concentration aniline pollution in raw water can be effectively addressed. The water treatment method disclosed by the invention has the advantagesof simple operation, high operation efficiency, working reliability and bright popularization prospect, and can be applied to conventional processing flow of water works.

Description

technical field [0001] The invention relates to a water treatment method, in particular to a water treatment method for sudden water pollution by cooperating with sodium hypochlorite to oxidize aniline with ozone, and is mainly used for emergency treatment of drinking water. Background technique [0002] Aniline, also known as aminobenzene in chemistry, its chemical formula is C 6 h 7 N is a very versatile amine substance, and it is also one of the chemical raw materials with the largest output and sales volume in the world. It is widely used in medical treatment, dyes or synthetic drugs, etc., and aniline is also one of the important intermediates for making rubber. It is yellow or colorless liquid at room temperature, slightly soluble in water, but very easily soluble in organic solvents like alcohol and ether. [0003] Although IARC (International Agency for Research on Cancer) decided not to list aniline as carcinogenic to humans. However, a large number of research r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/78C02F1/76C02F101/38
CPCC02F1/76C02F1/78C02F2101/38C02F2305/023
Inventor 刘冬梅王欣潘云皓崔福义田家宇王威刘志泉鲁晶倪佳鑫田雪山
Owner HARBIN INST OF TECH
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