Atmospheric pressure plasma jet combined ultrasonic and catalytic water treatment device

Abstract

The invention discloses a water treatment device through combination of atmospheric pressure plasma jet, ultrasonic wave and catalysis. The water treatment device comprises a gas-liquid two-phase reaction unit, an ultrasonic radiation unit, a gas flow adjusting unit, a liquid flow adjusting unit, a gas-liquid separation unit, an optical detection unit, a water quality analysis unit, and a drivingunit; and a photocatalysis unit is arranged in the gas-liquid two-phase reaction unit. An active substance of plasma generated in a gas phase by the atmospheric pressure plasma jet (APPJ) is injectedto a water treatment reactor for degrading pollutant molecules in liquid phase organic waste water, the atmospheric pressure plasma jet, ultrasonic effect of the ultrasonic radiation unit and the photocatalysis of the photocatalysis unit generate cooperative effect, the active substance for enhancing gas phase discharge can process the organic waste water, and the waste water processing efficiencyis effectively increased.

Description

Technical field[0001]The present invention relates to a coordinated ultrasound and catalytic water treatment apparatus for atmospheric pressure plasma jers, belonging to the field of water treatment.Background technique[0002]my country's pollution issues are increasingly severe, and a certain water treatment means for wastewater is very important. The traditional method for water treatment mainly includes biochemical methods such as filtration, adsorption, etc., anaerobic biochemical treatment, aerobic biological treatment, but in processing efficiency, processing energy efficiency, can handle organic pollutant molecules and toxicity. These convention methods have no requirements.[0003]In recent years, advanced oxidation technology has become a hot spot for treating organic wastewater. The atmospheric pressure plasma has simple operation, low consumption, low consumption, no vacuum device, easy to realize the production of pipeline production, and applied atmospheric plasma to organ...

AI Technical Summary

Problems solved by technology

However, the efficiency of the current atmospheric pressure plasma treatment of wastewater is generally low. The main measures to improve the treatment efficiency are as follows: First, use other advanced oxidation technologies such as ultrasonic technology to cooperate with plasma water treatment, such as the patent ZL201410337343.7 "plasma cooperative ultrasonic Cavitation Effect Wastewater Treatment Reactor", but this patent fails to make full use of the ultraviolet rays generated by the plasma, resulting in a waste of energy; the second is to use physical methods such as spraying, aeration, and mechanical disturbance to increase the contact area between the plasma and the wastewater. For example, the patent 201610541119.9 "a plasma treatment device for landfill leachate", but the wastewater treatment capacity of this patent is small, and the ultraviolet rays generated by the plasma cannot be fully utilized; the third is to use an array discharge structure to generate more activity Substances act on wastewater, such as patent 201610183437.2 "An array type high-density water dielectric barrier discharge wastewater treatment device", but this patent will cause a decrease in treatment efficiency due to recycling in the same container

Therefore, there are still two major problems at present: (1) the ultraviolet rays generated by the plasma cannot be fully utilized; (2) the relationship between the area in contact with the plasma and the wastewater and the treatment flow is difficult to coordinate, and the treatment flow is often insufficient when the contact area is large

Images