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Method and device for treating organic pollutant in water of tetramino iron ligand catalyst-strong alkali resin compound system

A technology for compounding organic pollutants and resins, applied in water pollutants, organic compound/hydride/coordination complex catalysts, chemical instruments and methods, etc. Achieve good economic and environmental benefits, efficient removal, and low input costs

Active Publication Date: 2017-02-01
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the pollutants still need to be treated after adsorption. If the treatment is not done properly, the pollutants will be desorbed, and the pollutants cannot be completely removed.
There is no report on the application of basic resin as a combination system of solid base and metal enzyme catalyst in the field of water treatment

Method used

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  • Method and device for treating organic pollutant in water of tetramino iron ligand catalyst-strong alkali resin compound system
  • Method and device for treating organic pollutant in water of tetramino iron ligand catalyst-strong alkali resin compound system
  • Method and device for treating organic pollutant in water of tetramino iron ligand catalyst-strong alkali resin compound system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Prepare an aqueous solution of an organic pollutant mixed standard with a concentration of 50 μg / L, adjust the pH to 7, add it to the mixing tank, and add ethyl-substituted tetraaminoiron ligand catalyst and hydrogen peroxide so that the concentrations are 1 μg / L and 10 mmol / L respectively After mixing, enter the activated D201 basic resin column, and take samples from 0, 10, 20, 30, 60, 120 minutes after the solution drips from the resin column, and analyze the samples by HPLC-MS / MS. The composite system has a removal rate of 26-99% for sulfur-containing pollutants, and after 2 hours of treatment, the catalytic activity has not decreased, and the pH value of the effluent is 7.8, only changing 0.8 (see figure 2 ).

Embodiment 2

[0027] Prepare an aqueous solution of organic pollutants with a concentration of 50 μg / L, and adjust the pH to 3, 5, 7, 9, and 11 respectively to investigate the effect of the raw water pH on the composite system. Bulk catalyst and hydrogen peroxide so that the concentrations are 1μg / L and 10mmol / L, respectively, after mixing, enter the activated D201 basic resin column for processing. After 2 hours of treatment, the composite system can remove 18-99% of organic pollutants under the condition of pH 3, and the pH value of the effluent is 4.2, which only changes by 1.2; the composite system can remove sulfur-containing pollutants under the condition of pH 5 The removal rate of sulfur-containing pollutants reached 26-99%, and the pH value of the effluent was 7.8, which only changed by 0.8; The composite system has a removal rate of 28-99% for sulfur-containing pollutants under the condition of pH 9, and the pH of the effluent is 9.4, which only changes by 0.4; the removal rate of...

Embodiment 3

[0029] Configure 5mg / L bisphenol A solution, add it to the mixing tank, add dissolved organic matter (DOM) to investigate its influence on the composite system, the DOM concentration is 10mg / L, add ethyl-substituted tetraaminoiron ligand catalyst and peroxide Hydrogen makes the concentrations of 10μg / L and 100mmol / L respectively, mixes and enters the activated D201 basic resin column, and takes samples for analysis 120min after the solution starts to drip out from the resin column. After 2 hours of treatment, the degradation rate of bisphenol A still reached over 98%, and DOM had no effect on the composite system for treating organic pollutants.

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Abstract

The invention provides a method and device for treating an organic pollutant in water of a tetramino iron ligand catalyst-strong alkali resin compound system and belongs to the field of water pollution control. The method is coupled with strong alkali resin to provide an alkali environment, the catalytic activity of a tetramino iron ligand catalyst in a neutral and acidic water body is improved. Under the optimization conditions, the effect of removing compound organic pollutants can be up to 31-99%, and the rate of removing fenamiphos, fenthion, bisphenol A, nonyl phenol and other pollutants is close to 100%. The invention discloses a tetramino iron ligand catalyst-strong alkali resin combination technology and device. The catalytic activity of the tetramino iron ligand catalyst is improved, a pH application range of the catalyst is widened, a treatment effect is remarkable, the pH change of a water sample is small, the catalyst is environment friendly and has corrosion to equipment, a process is simple, the catalyst dosage is small, and the input cost is low. Therefore, the compound technology has good economic and environmental benefits.

Description

technical field [0001] The invention belongs to the technical field of water pollution control, and relates to a method and a device for treating organic pollutants in water by a tetraaminoiron ligand catalyst-strong basic resin composite system. Background technique [0002] The problem of water pollution is becoming more and more serious, including surface water, ground water and drinking water, which has aroused widespread concern. There are many kinds of micropollutants in water, including thousands of organic chemicals such as pesticides and drugs. Their concentration levels in water are usually ng / L-μg / L, but they are frequently detected in water bodies, and can exist stably in water or transform into toxic products, posing a threat to aquatic organisms and even human health. [0003] Conventional water pollutant removal technologies include biological and chemical methods. Biological method is currently the most widely used and most mature sewage treatment technolog...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04B01J31/22C02F1/72C02F101/30
CPCC02F9/00B01J31/1805C02F1/725C02F1/722C02F2101/30C02F1/42C02F1/001
Inventor 蔡喜运刘清泉胡灿洋陈伟芳陈景文
Owner DALIAN UNIV OF TECH
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