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Method for removing pollutant from water

A technology for removing pollutants and water, applied in the field of water treatment, can solve the problems of slow reaction speed, weak ability to remove refractory organic pollutants, large consumption, etc., and achieve the effects of simple operation, low application cost and energy saving.

Inactive Publication Date: 2007-05-16
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of slow reaction speed between ferrate and refractory organic pollutants at room temperature, weak ability to remove refractory organic pollutants and large consumption in current water treatment methods, and provide a method for removing refractory organic pollutants. Methods of Contaminants in Water

Method used

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Examples

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specific Embodiment approach 1

[0005] Specific embodiment one: this embodiment removes pollutants in water according to the following steps: (1) detect the content of pollutants in the water to be treated, and add the water purifier in a mass ratio of 1 to 10:1 with the pollutants; ( 2) The water to be treated with the addition of water purifying agent flows into an ultrasonic reactor with an ultrasonic frequency of 10KHz-10MHz and a sound intensity of 0.1W-12W for irradiation, and the irradiation time is 1-30min; (3) Precipitate and filter. Outlet water; wherein the water purifying agent is ferrate or ferrate composite agent.

[0006] The removal rate of ammonia nitrogen in water using ferrate alone is only 24%, while this embodiment can remove 90% to 98% of ammonia nitrogen, 90% of nitrobenzene, 98% of NOM, 100% of phenol and 95% of of aniline.

specific Embodiment approach 2

[0007] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the pollutants detected in step (1) are organic pollutants and ammonia nitrogen. Other steps are the same as those in Embodiment 1.

[0008] The organic pollutants in this embodiment include natural organic matter (NOM) and refractory organic matter (ROM).

specific Embodiment approach 3

[0009] Embodiment 3: The difference between this embodiment and Embodiment 1 is that in step (1), the water purifying agent is added in a mass ratio of 2 to 9:1 to pollutants. Other steps are the same as those in Embodiment 1.

[0010] This embodiment can remove 92% of ammonia nitrogen, 92% of nitrobenzene, 98% of NOM, 100% of phenol, 95% of aniline and 92-94% of natural organic humic acid in water.

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PUM

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Abstract

The invention discloses a water disposing method to remove pollution, which comprises the following steps: (1) detecting pollution content; adding water purification agent with quality rate at 1-10: 1 corresponding to pollution; (2) irradiating the disposed flow through ultrasonic reactor with inflow frequency of at 10KHz-10MHz and acoustic intensity at 0.1W-12W for 1-30min; (3) sedimenting; filtering; draining. The water purification agent is ferrate or ferrate composite agent, which improves removing rate of organic pollution effectively.

Description

technical field [0001] The invention relates to a water treatment method. Background technique [0002] At present, ferrate is commonly used in water treatment methods, and ferrate has the advantage of high redox potential (2.2V under acidic conditions and 0.7V under alkaline conditions). Ferrate can oxidize organic substances in aqueous solution, such as ethanol, carbonyl compounds, amino acids, phenol, 1,2 glycols, organic nitrogen-containing compounds, aliphatic sulfur, nitrosamine compounds, thiourea, thiosulfate, chlorine Type oxyanions and hydrazine compounds, and ferrate can also reduce the BOD value and COD value of the sewage secondary treatment effluent, unconditionally oxidize C=C or C≡C bond, and the oxidation performance is far better than ClO 4 - and MnO 4 - . However, in the current water treatment method, the reaction rate between ferrate and refractory organic pollutants (such as tertiary amine, ammonia, carboxylic acid, aldehyde and alcohol) is slow at...

Claims

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Application Information

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IPC IPC(8): C02F1/52C02F1/36
Inventor 马军张瑛洁李春娟王禄鹏赵伟
Owner HARBIN INST OF TECH
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