Absorption catalysis purification separation composite function film for removing contaminant in water and water purification method

An adsorption catalysis, purification and separation technology, applied in the field of environmental and chemical engineering, can solve problems such as pollution, achieve the effect of improving efficiency and solving the problem of membrane adsorption pollution

Inactive Publication Date: 2008-09-17
YANGZHOU INGREENTREE ENVIRONMENTAL TECH CO LTD
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for improving the purification effect of micro-polluted organic toxic molecules in water and the treatment efficiency of micro-polluted water through the preparation and use

Method used

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Examples

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preparation example Construction

[0009] Through the preparation and use of catalytic adsorption separation composite membrane, it provides a method to improve the purification effect of micro-polluted organic toxic molecules and the efficiency of micro-polluted water treatment. While separating larger pollutants, it can adsorb and remove smaller pollutants. by separating the membrane separation process from the catalytic oxidation purification process to solve the problems of low pollutant concentration, low oxidation efficiency, and separation of by-products in conventional oxidation technologies; through catalytic purification treatment, the membranes polluted by adsorption can be purified and regenerated

[0010] Examples of the preparation and purification of adsorption and catalytic composite membranes to remove pollutants in water:

Embodiment 1

[0012] Preparation of adsorption catalytic separation composite membrane:

[0013] Composite carbon nanotubes, high specific surface carbon material fine powder and doped catalyst sol prepared by sol-gel method are mixed on the separation microfiltration base membrane of polyester filter cloth, coated or impregnated with the base membrane, and then placed and dried to obtain Composite membrane with adsorbent and doped nano-titanium dioxide with functions of adsorption and catalytic separation.

[0014] Take 10ml of tetrabutyl titanate and slowly add it dropwise to 35ml of absolute ethanol, 1ml of concentrated nitric acid, stir vigorously for 1h, then add a mixture of 35ml of absolute ethanol, 1ml of deionized water, and a certain amount (0.001-0.1g) of cerium nitrate , dripped in about 20 minutes, and added 3ml of absolute ethanol dissolved in 0.15g of PEG at the same time. Continue to stir vigorously for 2h to form doped TiO 2 Inorganic phase sol. Divide the above sol into...

Embodiment 2

[0021] Catalytic Purification of Composite Membrane Adsorbed Pollutants

[0022] After the composite membrane is separated from the treated water sample; the saturated composite membrane can be removed by oxidative splitting and mineralization under the action of added hydrogen peroxide and light (electricity), thereby regenerating the adsorption capacity of the composite membrane and purifying the pollution of the membrane.

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Abstract

The invention relates to a composite functional membrane with adsorption, catalytic purification and separation functions for removing pollutants from water, belonging to the technology field of environment and chemical engineering. The method comprises the steps of doping titanium oxide and other coating separation membranes in adsorbing materials (carbon materials, inorganic materials and molecular imprinting materials to obtain a composite functional membrane with adsorption, catalytic purification and separation functions; and adsorbing pollutants with the membrane, separating, oxidizing and mineralizing the absorbed pollutants to regenerate the purification and adsorption functions of the membrane. The inventive method improves pollutant adsorption and catalytic oxidation efficiency; and preventes the pollution of oxidized byproducts to the quality of effluent water after membrane separation, so as to be safer when being used for drinking water purification. The inventive method has the advantages of high efficiency, complete removal of pollutants, low pollution and low energy consumption; and can be used for purifying water bodies such as slightly polluted water, recycled water or water containing low-concentration trace organic pollutants.

Description

technical field [0001] The invention belongs to the technical field of environment and chemical engineering. The invention relates to water body purification, in particular to a method for membrane separation and catalytic oxidation water body purification treatment. Background technique [0002] Water purification often adopts biotechnology, advanced oxidation technology, membrane separation technology and adsorption purification technology: microorganisms degrade organic pollutants and finally convert them into carbon dioxide, reducing TOC in water. Membrane separation can intercept pollutants in water and purify the effluent. Depending on the membrane pore size of the membrane separation, the molecular weight of the intercepted pollutants decreases with the decrease of the pore size; the operating pressure of the membrane separation increases with the decrease of the pore size, and the energy consumption also increases. The molecular weight cut-off of nanofiltration rev...

Claims

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Application Information

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IPC IPC(8): C02F9/04C02F1/28C02F1/44C02F1/72
Inventor 柳丽芬郑国华杨凤林
Owner YANGZHOU INGREENTREE ENVIRONMENTAL TECH CO LTD
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