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Method for water treatment through permanganate homogeneous catalytic oxidation

A permanganate, homogeneous catalysis technology, applied in oxidation water/sewage treatment, chemical instruments and methods, water/sludge/sewage treatment, etc. Safe and convenient storage, good oxidation effect, and the effect of expanding the scope of application

Inactive Publication Date: 2014-01-22
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the problem of low removal rate of organic pollutants in existing water treatment methods, and provides a method for treating water with permanganate homogeneous catalytic oxidation

Method used

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  • Method for water treatment through permanganate homogeneous catalytic oxidation
  • Method for water treatment through permanganate homogeneous catalytic oxidation

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specific Embodiment approach 1

[0014] Specific embodiment one: In this embodiment, a method for permanganate homogeneous catalytic oxidation water treatment is carried out according to the following steps:

[0015] 1. Add surfactant and permanganate to the raw water containing organic pollutants, stir and dissolve to obtain a mixed solution; the dosage of permanganate is 0.01mg to 500mg of permanganate per liter of water; The mass ratio of the surfactant to the permanganate is (0.5-500): 1, the permanganate is potassium permanganate or sodium permanganate; the surfactant is an anionic surfactant , cationic surfactants, zwitterionic surfactants, nonionic surfactants, fluorine-containing surfactants, silicon-containing surfactants, boron-containing surfactants, lignosulfonates, and crown ether surfactants A mixture of one or several combinations; when the surfactant is a mixture, each component in the mixture is mixed in any proportion before;

[0016] 2. Stir the mixed solution obtained in step 1, the stirr...

specific Embodiment approach 2

[0020] Embodiment 2: This embodiment differs from Embodiment 1 in that the organic pollutant in the raw water containing organic pollutants described in step 1 is phenol. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0021] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: the anionic surfactant described in step one is sodium stearate, potassium laurate, sodium dodecylbenzenesulfonate, fatty acid methyl Esters α-sulfonate sodium, succinate sulfonate, 1,2-di-n-butylnaphthalene-6-sodium sulfonate, sodium methylene bis-naphthalene sulfonate, sodium lauryl sulfate, lauryl polycyclo Sodium oxyethylene ether sulfate, sodium lauryl polyoxyethylene ether phosphate or sulfated castor oil, the cationic surfactant described in step 1 is dodecyl dimethyl benzyl ammonium bromide, diethyl Benzyl-β-octadecenamide ethylammonium chloride or cetyltrimethylammonium bromide, the zwitterionic surfactant described in step 1 is sodium lauryl carboxymethyl imidazoline acetic acid Salt, lauryl betaine, lecithin, amine oxide, carboxylic acid type β-alanine or N-aminoglycine, the nonionic surfactant described in step 1 is fatty alcohol polyethylene oxide ether...

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Abstract

The invention provides a method for water treatment through permanganate homogeneous catalytic oxidation, and relates to a method for water treatment. The method is to solve the problem of low removal rate of organic pollutants in existing methods water treatment. The preparation method is as follows: surfactants and permanganate are added in raw water; after stirring and dissolving, the mixture is subjected to air floatation; the scum layer is scraped, and the processed raw water is obtained. The removal rate of organic pollutants is above 90% during the water treatment process. When only potassium permanganate is added for oxidation, the removal rate of organic pollutants in water is only 40%. The removal rate of organic pollutants in water is increased by 50%. The method is used for removing organic pollutants in water.

Description

technical field [0001] The invention relates to a method for water treatment. Background technique [0002] At present, more than 90% of my country's drinking water sources are polluted to varying degrees. Typical pollutants include endocrine disruptors (EDCs), pharmaceuticals and personal care products (PPCPs), algae toxins and other organic pollutants. However, conventional water treatment processes are difficult to treat These organics are effectively removed. Compared with conventional removal processes, chemical oxidation can destroy the molecular structure of pollutants and transform them into relatively low-toxic or non-toxic substances, laying the foundation for subsequent biological treatment and is an effective way to remove toxic and harmful pollutants. Common oxidants in the water treatment process include chlorine gas, chlorine dioxide, chloramine, ultraviolet light, ultrasonic waves, ozone, hydrogen peroxide, persulfate, permanganate, and ferrate. [0003] Chl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/72C02F101/30
Inventor 马军赵晓丹刘玉蕾肖佳月吕东伟
Owner HARBIN INST OF TECH
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