CN201746368U - Pulse plasma device for safe disinfection of drinking water - Google Patents

Abstract

The pulse plasma reaction device for safe disinfection of drinking water disclosed by the utility model includes a discharge reactor, and there are vertically installed zigzag needle electrodes and plate electrodes in the discharge reactor, and an exposure device is installed below the needle electrodes and the plate electrodes. The trachea array, the needle electrode and the plate electrode are respectively connected to the positive pole and the negative pole of the pulse power supply. The shell of the discharge reactor is provided with a water outlet and a water inlet. There are holes in the cover of the reactor. The flowmeter is connected with the water inlet of the water storage tank, the water inlet of the discharge reactor is connected with the water outlet of the water storage tank through the second flowmeter, and the aeration tube array is connected with the fan through the third flowmeter. The device of the utility model has the advantages of simple structure, convenient operation and low operation cost, can greatly improve the yield and utilization rate of active substances, and enhance the sterilization and algae removal effects of drinking water. The utility model is suitable for large-flux drinking water sterilization, and the processing capacity can reach one ton per hour.

Description

A pulsed plasma device for safe disinfection of drinking water

technical field

The utility model relates to a device for safe disinfection of drinking water, which belongs to the field of environmental technology and water treatment.

Background technique

In recent years, the pollution of drinking water sources in our country has been increasing and deteriorating day by day, which has brought great harm to human health. At present, the water purification process of most water plants still stays in the traditional process of "flocculation-sedimentation-filtration-chlorine disinfection", mainly for the purpose of removing turbidity, suspended solids, color and pathogenic bacteria in the water, and the pathogenic bacteria and organic matter in the water Especially dissolved organic matter cannot be effectively removed. The presence of organic matter, on the one hand, will react with chlorine in the process of chlorination and disinfection to generate disinfection by-products (DBPs), such as trihalomethanes (THMs), haloacetic acids (HAAs), etc. These substances have been confirmed or suspected to be carcinogenic , teratogenic, and mutagenic substances; on the other hand, it provides a nutrient matrix for heterotrophic microorganisms in the pipeline, which can easily cause microorganisms to multiply in the pipe network and form biofilm on the pipe wall, resulting in drinking water in the pipe network. Secondary pollution.

Hydroelectric pulse technology generally uses high-voltage pulse power supply to form plasma, which integrates high-energy electron radiation, wet oxidation, chemical oxidation, photocatalytic oxidation and other advanced oxidation technologies. The system does not need additional oxidant, high temperature and high pressure or external light source technologies. Means, is a new concept of processing technology. The pulse plasma liquid phase discharge process has both physical and chemical effects. The physical effects can form ultraviolet light and shock waves. The intensity is determined by the discharge energy. The chemical effects mainly promote the formation of active substances, such as OH·, H ₂ O ₂ , O ₃ etc. Therefore, the pulse discharge plasma technology can use the ultraviolet light, shock wave and active free radicals formed by the discharge to form a synergistic effect of high-energy electrons, ultraviolet rays, ozone and other factors to enhance the treatment effect. However, the concentration of bacteria in drinking water is very low, and the utilization rate of active substances and energy generated by pulsed plasma discharge is not high. Moreover, ordinary liquid electric reactors are difficult to scale up and are difficult to apply to large-flux water treatment occasions.

Contents of the invention

The purpose of the utility model is to provide a pulse plasma catalytic device which can make full use of active substances produced in the pulse plasma discharge process to safely disinfect large-flux drinking water.

The pulse plasma reaction device used for safe disinfection of drinking water of the utility model includes a discharge reactor, a zigzag needle electrode and a plate electrode installed vertically in the discharge reactor, and an aeration tube is installed below the needle electrode and the plate electrode The needle electrode and the plate electrode are respectively connected to the positive and negative electrodes of the pulse power supply. The discharge reactor shell is provided with a water outlet and a water inlet. There are holes in the cover of the reactor. The water outlet of the discharge reactor passes through the first flowmeter It is connected with the water inlet of the water storage tank, the water inlet of the discharge reactor is connected with the water outlet of the water storage tank through the second flowmeter, and the aeration tube array is connected with the fan through the third flowmeter.

When treating drinking water, first turn on the third flow meter and the air pump, and adjust the gas velocity to ventilate the discharge reactor aeration pipe. After the airflow is stable, fill the water storage tank with water to be treated, turn on the first and second flowmeters and water pumps, and inject the water in the water storage tank into the discharge reactor. Suction dry causing the pump to run dry. When the gas flow and water flow are stable, stop adding water to the water storage tank, turn on the power, and start discharging. The treated water flows out from the outlet of the reactor, the water in the water storage tank is circulated through the discharge reactor to realize safe disinfection, and the gas flows out from the hole on the reactor cover. The device of the utility model utilizes non-thermal plasma generated by pulse plasma discharge to sterilize drinking water. Using the physical and chemical effects of the pulsed plasma liquid phase discharge process, the physical effects can form ultraviolet light and shock waves, whose intensity is determined by the discharge energy, and the chemical effects mainly promote the formation of active substances, such as OH , H ₂ O ₂ , O ₃ etc. Physical effects and chemical effects work together to effectively kill low-concentration bacteria in drinking water.

The device of the utility model has the advantages of simple structure, convenient operation and low operation cost, can greatly improve the yield and utilization rate of active substances, and enhance the sterilization and algae removal effects of drinking water. The utility model is suitable for large-flux drinking water sterilization, and the processing capacity can reach one ton per hour.

Description of drawings

Fig. 1 is a structural schematic diagram of the utility model device.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described.

With reference to Fig. 1, the pulse plasma reaction device that is used for safe disinfection of drinking water of the present utility model comprises discharge reactor 8, and vertically installed zigzag needle electrode 8-1 and plate electrode 8-2 are arranged in the discharge reactor, in An aeration tube array 7 is installed below the needle electrode and the plate electrode. The needle electrode and the plate electrode are respectively connected to the positive pole and the negative pole of the pulse power supply 1. The shell of the discharge reactor 8 is provided with a water outlet and a water inlet. The cover of the reactor There are holes, the water outlet of the discharge reactor is connected with the water inlet of the water storage tank 9 through the first flow meter 2, the water inlet of the discharge reactor is connected with the water outlet of the water storage tank 9 through the second flow meter 3, and the aeration tube array 7 is connected with the fan 5 through the third flowmeter 4.

The shell of the discharge reactor 8 is made of polyethylene insulating material, and the zigzag needle electrode 8-1 and the plate electrode 8-2 are respectively made of stainless steel.

Claims (2)

1. A pulsed plasma reaction device for safe disinfection of drinking water is characterized in that it comprises a discharge reactor (8), and there are vertically installed zigzag needle electrodes (8-1) and plate electrodes (8) in the discharge reactor -2), the aeration tube array (7) is installed under the needle electrode and the plate electrode, the needle electrode and the plate electrode are connected to the positive pole and the negative pole of the pulse power supply (1) respectively, and the shell of the discharge reactor (8) is provided with There are water outlets and water inlets. There are holes on the cover of the reactor. The water outlet of the discharge reactor is connected to the water inlet of the water storage tank (9) through the first flow meter (2), and the water inlet of the discharge reactor is connected through the second flow meter. The meter (3) is connected to the water outlet of the water storage tank (9), and the aeration tube array (7) is connected to the blower fan (5) through the third flow meter (4). 2. The pulse plasma reaction device for safe disinfection of drinking water according to claim 1, characterized in that the discharge reactor (8) housing is a polyethylene insulating material, and the zigzag needle electrode (8-1) and plate The electrodes (8-2) are respectively prepared from stainless steel materials.

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