Method for treating water and aqueous solutions by means of a gas-discharge plasma and a device for carrying out said method

A gas discharge and plasma technology, applied in the field of drinking and technical water treatment, and potable water and aqueous solutions, can solve the problems of high energy consumption, low decontamination efficiency, no aqueous solution disinfection, etc., to increase treatment efficiency Effect

Inactive Publication Date: 2010-03-24
CATECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0016] Common deficiencies of the methods and devices described above are the low decontamination efficiency of aqueous solutions at high initial concentrations of a wide variety of classes and types of contaminants and pollutants, and the insufficient degree (intensity) of decontamination under the above conditions , and relatively high energy consumption per unit of purified water
[0017] Apart from this, known methods and devices do not provide guaranteed disinfection of aqueous solutions from spore formed Bacteria and viruses
[0018] Another serious limitation of some of the methods and devices described above is the necessity to use high voltages in excess of 500V which are not safe for maintenance personnel and the environment

Method used

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  • Method for treating water and aqueous solutions by means of a gas-discharge plasma and a device for carrying out said method
  • Method for treating water and aqueous solutions by means of a gas-discharge plasma and a device for carrying out said method
  • Method for treating water and aqueous solutions by means of a gas-discharge plasma and a device for carrying out said method

Examples

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no. 1 example

[0144] The examples described below aim to demonstrate the capabilities and efficiencies of embodiments of the method of water decontamination from heavy metals with combined gas discharge plasmas.

[0145] To verify the efficiency of the water purification method, an aqueous solution at pH = 6.9 contaminated with the following initial concentration of metal ions: Fe 2+ =192 mg / l, Pb 2+ = 0,32 mg / l, Hg 2+ = 0,14 mg / l, Cd 2+ = 0,29mg / l, Cг 6+ =69mg / l, Ni 2+ = 24 mg / l, Mo 4+ = 13 mg / l and Co 4+ = 19 mg / l (total concentration of heavy metals 317,75 mg / l).

[0146] Purification of solutions is achieved in a proposed apparatus for water and aqueous solution purification with gas discharge plasma, which provides a proposed method embodiment ( figure 1 ).

[0147] In the particular case of the device embodiment, the device consists of a reaction chamber 1 with electrodes 27 and 32, power sources 44 and 45, a controller 47, a magnet 5, an arrangement for creating a vacuum in t...

no. 2 example

[0166] The aim of the examples presented below is to demonstrate the achievability and efficiency of a method of decontaminating contaminated water нижеследующего примерапродемoнстрировать вoзмoжнoсть осуществать осуществать осуществать from organic substances in specific petrochemical products with gas discharge plasma.

[0167] To verify the efficiency of the purification method, water contaminated with unleaded gasoline (with the additive methyl-tert-butyl-ether (MTBE)) having a gasoline concentration of about 10 ml gasoline per liter of water was treated.

[0168] In the proposed device ( figure 1 ) in the treatment of polluted water (more precisely, water-gasoline emulsion), the specific case of the embodiment of which is described above in the first example, except that it is additionally equipped with electrodes 33, power supply 46 and Magnet 48.

[0169] In this case, the electrode 27 of the reaction chamber 1 is made of stainless steel, its internal diameter is about...

no. 3 example

[0192] The aim of the examples presented below is to demonstrate the performance and efficiency of the treatment of contaminated liquids with combined gas discharge plasma applied to seawater contaminated by petrochemical products.

[0193] In order to verify the efficiency of purifying seawater from petrochemical products, the proportion of seawater polluted by gasoline and diesel is about 10ml of pollutants per liter of seawater. The salinity of sea water is 27.6 g / l and pH=6,11.

[0194] In the proposed device ( figure 1 ) for the treatment of contaminated water (more precisely, water-gasoline emulsions), the specific case of an embodiment of which is described above in Example #2, except that the electrodes 32 and 33 in this specific case The number is two of each.

[0195] In this case, the electrode 27 of the reaction chamber 1 is made of stainless steel, its inner diameter is about 98 mm, and its height is about 950 mm. The distance between the electrodes 27 and 32 is...

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Abstract

The invention can be used for purifying and decontaminating waste water and for activating aqueous solutions and chemically pure and potable water. The inventive method for treating water and aqueoussolutions by means of a pulsed gas-discharge plasma consists in exposing a liquid flow bordering a gas medium to the action of the pulsed gas-discharge plasma, said pulsed gas-discharge being inducedand maintained by two main electric pulsed discharges I and II having different frequencies with a condition that said gas medium is pre-ionized. The discharge II is formed in the form of a pulse packet in spaces between the discharge I pulses. The invention makes it possible to purify waste water having a high initial concentration of polluting substances, to increase the efficiency of aqueous media activation, to enhance the stability and resistance of acquired properties to external effects and to control the modified and/or reacquired physical, chemical and biological properties obtained by the aqueous media during the activation thereof.

Description

technical field [0001] The present invention relates to the field of treatment of water and aqueous solutions with low temperature plasmas of gas discharges to provide their decontamination from a wide range of pollutants and pollutants, disinfection or activation from microorganisms of diverse nature. [0002] Primarily, the invention can be used to treat sewage from different sources for drinking and technical water treatment. The invention can also be used to activate chemically pure and potable water and aqueous solutions. The products resulting from this activation are useful in the pharmaceutical, veterinary, food, microbiological, cosmetic, mining and chemical industries and in agriculture. Background technique [0003] There are many known methods of treating water and aqueous solutions (aqueous media) by affecting them (aqueous media) with a plasma of a gas discharge, such as: arc discharge (US 5464513) , corona discharge (US5549795, WO 98 / 09722), barrier discharg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L2/14C02F1/48C02F1/46H05H1/24
CPCH05H1/24C02F1/4608H05H1/245H05H1/473H05H2245/36
Inventor 欧雷克斯安卓·柏里苏维奇·扎吉卡凡斯希利·帕夫洛维奇·巴克哈尔
Owner CATECH
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