A method of plasma-based water treatment

Abstract

The present invention discloses a plasma-based water treatment method, which comprises a reactor for storing and treating sewage, a high-voltage power supply and high voltage electrodes, wherein the high voltage power supply is adopted to generate an alternating current high voltage, the high voltage electrode is adopted to directly carry out discharging on a sewage load, high temperature and high voltage plasmas are generated through the discharging, and the plasmas contain a large amount of ions and OH free radical particles, such that organic matter molecules in plasma channels are subjected to complete high temperature pyrolysis or are subjected to advanced oxidation under an effect of the free radical so as to carry out chemical degradation. With the water treatment method of the present invention, physical contaminants, chemical contaminants, microorganisms and other contaminants in the water can be effectively removed, treatment cost is low, and a significant removing effect is especially provided for high concentration organic matters in the water. In addition, the water treatment method of the present invention further has advantages of stable discharging voltage, uniform treatment, safety and reliability, wherein water treatment efficiency is improved while energy consumption is substantially reduced.

Description

technical field [0001] The invention relates to water treatment technology, in particular to a plasma-based water treatment method. Background technique [0002] With the increasingly serious pollution and the further development of the deterioration of water environment quality, traditional water treatment methods are more severely challenged. The ever-increasing industrial wastewater is becoming the number one killer of water pollution. With the increase of organic pollutants in water, the number and types of organic halides produced by the chlorination disinfection method that has been used in drinking water have continued to increase, and they have begun to seriously threaten human health. Electrotechnical technology has penetrated into the field of environmental protection, especially high-voltage pulse discharge water treatment is becoming a research hotspot at home and abroad due to the following characteristics. [0003] The plasma generated by the intense pulse di...

AI Technical Summary

Problems solved by technology

[0004] In the existing methods and technologies of using discharge plasma to treat sewage, most of them generate plasma by discharging in the gas, and then fill the gas containing ozone and the like into water, because most of the active particles in the discharge gas have a short life span Short, its oxidation can not be fully utilized

In addition, in these methods, the discharge voltage is not applied to the water, and the high voltage does not have a great impact on the activation, polarization and neutralization of impurities in the water, which leads to the low efficiency of water treatment in these methods

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