Device and method for sterilizing and disinfecting wastewater by pulsed liquid-phase discharge plasma

Abstract

The invention discloses a device and a method for sterilizing and disinfecting wastewater by pulsed liquid-phase discharge plasma. The device comprises a pulsed liquid-phase discharge plasma generator and a gas bubbling device, wherein the gas bubbling device is used for bubbling a liquid medium in the device so as to increase generation source matters of free plasma radicals in the liquid medium to enhance the gas-liquid mixing; and the pulsed liquid-phase discharge plasma generator is used for generating active matters of free plasma radicals and transient energy in gas-liquid mixtures. According to the device and method disclosed by the invention, bacteria and viruses in the wastewater are killed by active matters of the free radicals and transient energy generated in the discharge so as to realize efficient treatment of the wastewater; and besides, the wastewater treatment method disclosed by the invention has the advantages of low energy consumption and simple and easy device maintenance.

Description

technical field [0001] The invention relates to a device and method for sterilizing and disinfecting pulsed liquid phase discharge plasma sewage. Background technique [0002] my country's water pollution is currently quite serious. In recent years, the daily discharge of industrial wastewater and domestic sewage has reached nearly 164 million tons, 80% of which have not been strictly treated and directly discharged into river waters; Among them, nearly 1 / 2 of the river sections are polluted, and 1 / 10 of the river sections are seriously polluted; more than 90% of urban waters are polluted. On the other hand, my country is one of the countries in the world that is seriously short of water resources. It needs to use 6% of the world's water to feed 20% of the world's people. The per capita drinking water in my country is only 1 / 4 of the world's average level. . Therefore, it is imminent to vigorously promote the purification of water quality in our country. The key to drinking...

AI Technical Summary

Problems solved by technology

In the above-mentioned commonly used sewage disinfection technologies, toxic disinfection by-products may be produced, and there are "three causes" substances, which will have long-term toxic effects on humans and aquatic organisms; or the on-site preparation equipment is complex, large investment, high cost, and equipment management Complexity, etc.; ultraviolet technology has the problem of photocombined bacteria regeneration, the problem of fouling film on the quartz sleeve, the price of high-power and long-life quartz tube and high maintenance costs, the problem of ultraviolet light transmittance, and the large power consumption of equipment.

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