Gliding arc and dielectric barrier discharge combined discharge plasma disinfection device and method

A discharge plasma disinfection device, comprising:

• a first high-voltage power, configured to provide a first voltage;
• a first plasma source, connected to the first high-voltage power supply, the first plasma source comprising;
• a first plasma chamber, provided with a first air inlet and a first air outlet, the first air outlet communicating with a first controllable flow gas pump;
• a first A electrode, connected to the first high-voltage power supply;
• and
• a first B electrode, parallel to the first A electrode and connected to the first high-voltage power supply;
• wherein the first A electrode and the first B electrode generate a first plasma gas in the first plasma chamber under a first voltage, and the first plasma gas is dominated by nitrogen oxides;
• a second high-voltage power, configured to provide a second voltage;
• a second plasma source, connected to the second high-voltage power supply, the second plasma source comprising;
• a second plasma chamber, provided with a second air inlet and a second air outlet, the second air outlet communicating with a second controllable flow gas pump;
• a second A electrode, connected to the second high-voltage power supply;
• a second B electrode, parallel to the second A electrode and connected to the second high-voltage power supply;
• an insulating dielectric plate, set between the second A electrode and the second B electrode;
• the second A electrode and the second B electrode generate a second plasma gas in the second plasma chamber under a second voltage, and the second plasma gas is dominated by ozone;
• a reactive gas mixing unit, comprising;
• an inlet, connected to a first controllable flow air pump and the second controllable flow air pump;
• and
• a reactive gas mixing chamber, connected to the inlet to mix the first plasma gas and the second plasma gas to form the mixed reactive gas, wherein the reactive gas mixing unit is configured to mix the first plasma gas and the second plasma gas to form a mixed reactive gas;
• a supplementary valve, wherein the first air inlet and the second air inlet are connected to the supplementary valve, and the supplementary valve is a one-way valve without an opening air pressure;
• and an outlet of the gas supplementing valve is connected to the gas inlet of the gliding arc plasma source and the gas inlet of the dielectric barrier discharge plasma source;
• a check one-way valve, wherein the first controllable flow air pump and the second controllable flow air pump are connected to the inlet via the check one-way valve;
• an activated water disinfection and sterilization unit, which is connected to the outlet of the reactive gas mixing unit to introduce mixed reactive gas;
• the activated water disinfection and sterilization unit includes,
• an activated water preparation chamber, which contains the solution and is provided with a circulating water outlet, a gas return port and a gas-liquid mixture inlet,
• a peristaltic water pump, which has one end connected to the outlet of the reactive gas mixing unit, and the other end connected to the circulating water outlet of the activated water preparation chamber to pump the solution to form a gas-liquid mixture, and return to the activated water preparation chamber through the gas-liquid mixture inlet;
• an air return passage, one end of which is connected to the air gas return port and the other end is connected to the first air inlet and the second air inlet to circulate activated water to prepare the gas in the cavity;
• wherein
• the first A electrode and the first B electrode are used for generating a first plasma gas under a first voltage, wherein the first plasma gas is mainly produced by nitrogen oxide and the nitrogen oxide accounts for more than 90% of the total plasma discharge products;
• the second A electrode and the second B electrode are used for generating a second plasma gas under a second voltage, wherein the second plasma gas is mainly produced by ozone and the ozone accounts for more than 80% of the total products of the plasma discharge;
• and
• the mixed reactive gas can be directly used for disinfection and sterilization, or the aqueous solution is processed first, and then the plasma-activated water is used for disinfection and sterilization;
• and
• the voltage of the first high-voltage power supply is more than 10 kV and the output power is more than 200 W, and the voltage of the second high-voltage power supply is more than 5 kV and the output power is more than 8 W.