A disinfection system for treating acidic aqueous solution by NO3 gas activation and its control method

Abstract

The present invention relates to the field of plasma sterilization technology, and more specifically to a disinfection system for treating an acidic aqueous solution with activated NO3 gas, and a control method thereof. The disinfection system comprises an NO3 generation module, an NO3 detection module, a prefabricated solution supply module, an activation module, and a control module. The activation module accommodates the acidic aqueous solution to be treated, and the gas generated by the NO3 generation module activates and treats the acidic aqueous solution to be treated. The present invention is provided with an NO3 detection module and a control module. The NO3 detection module monitors the instantaneous concentration of NO3 generated by the NO3 generation module in real time, ensuring that the NO3 production is greater than or equal to a preset stable production. This overcomes the current technical difficulties of low NO3 production efficiency and unstable NO3 production, which is susceptible to significant changes with discharge parameters and environmental conditions, thereby improving the preparation effect and consistency of the quality of activated water.

Description

Technical Field

[0001] The present invention relates to the technical field of plasma sterilization, and in particular to a disinfection system for treating an acidic aqueous solution through activation of NO3 gas and a control method thereof. Background Art

[0002] Plasma is an unbound macroscopic system composed of a large number of charged particles. Plasma-activated water is a water solution directly or indirectly treated by plasma, containing high-density liquid-phase reactive nitrogen oxides (RONS), including nitrate (NO3 - ), hydrogen peroxide (H2O2) and ozone (O3) and other long-lived substances, as well as hydroxyl radicals (·OH), singlet oxygen ( 1 O2), superoxide anion (O2 - ) and peroxynitrite (ONOO - ) and other short-lived substances. These substances give plasma-activated water its strong oxidizing properties and certain cell selectivity, making it highly effective in sterilization and disinfection. Therefore, plasma-activated water is considered a novel sterilant. Compared with traditional disinfectants and antibiotics, plasma-activated water has no chemical residues, no side effects, no drug resistance, is environmentally friendly to prepare, is economical to produce, and possesses more potent sterilization and disinfection capabilities.

[0003] Currently, the most widely used industrial method for producing plasma-activated water is direct plasma treatment of aqueous solutions, where plasma directly contacts the aqueous solution. In this case, the highly active, short-lived particles excited / ionized by direct plasma treatment interact with surrounding gas and water molecules, producing more liquid-phase active particles and offering the advantage of high efficiency. However, direct plasma treatment also presents certain technical challenges. On the one hand, over long-term operation, the aqueous solution and its water vapor can easily corrode the discharge electrodes, leading to system instability and compromising the quality of the activated water. On the other hand, impurity particles generated by the discharge or metallic substances produced by electrode rust can easily enter the aqueous solution, compromising its biosafety. Indirect plasma treatment of aqueous solutions involves passing plasma-activated gas into the aqueous solution for activation, effectively avoiding the issues of electrode corrosion and impurities affecting biosafety. However, the short-lived active particles produced by current commercially available indirect plasma treatment of aqueous solutions are relatively inefficient and fail to achieve effective sterilization. Summary of the Invention

[0004] (1) Purpose of the invention

[0005] The purpose of the present invention is to provide a disinfection system and a control method thereof for treating an acidic aqueous solution with NO3 gas activation, which can avoid the biosafety threat of direct plasma treatment, improve the preparation efficiency of indirect activated water, and realize efficient and stable plasma indirect activated water preparation.

[0006] (2) Technical solution

[0007] To solve the above problems, the present invention provides a disinfection system for treating an acidic aqueous solution by activating NO3 gas, comprising:

[0008] NO3 generation module, NO3 detection module, activation module and control module;

[0009] The NO3 generation module, NO3 detection module and activation module are connected in sequence;

[0010] The NO3 generating module is used to generate the inhaled ambient air into a generated gas, wherein the generated gas includes NO3;

[0011] The NO3 detection module is used to detect the generated gas, output the detection result to the control module, and output the detected generated gas to the activation module;

[0012] The activation module contains the acidic aqueous solution to be treated, and the generated gas is mixed with the acidic aqueous solution to be treated in the activation module to activate the acidic aqueous solution to be treated;

[0013] The control module is used to adjust the operating parameters of the NO3 generating module according to the detection result and the state parameters of the NO3 generating module, so that the NO3 output generated by the NO3 generating module is greater than or equal to a preset stable output.

[0014] In another aspect of the present invention, preferably, the disinfection system further comprises a prefabricated solution supply module;

[0015] The prefabricated solution supply module is used to store the acidic aqueous solution to be treated and pass the acidic aqueous solution to be treated into the activation module;

[0016] The acidic aqueous solution to be treated includes an inorganic acid;

[0017] The inorganic acid includes sulfuric acid, hydrochloric acid and nitric acid;

[0018] The pH of the acidic aqueous solution to be treated is less than 4.

[0019] In another aspect of the present invention, preferably, the NO3 generating module comprises: an air supply component, an NO3 generator, a power supply component and a temperature detection component; the state parameters include operating parameters of the air supply component and temperature parameters of the NO3 generating module; the temperature detection component is used to detect the temperature parameters of the NO3 generating module;

[0020] The air supply member is connected to the NO3 generator, and the air supply member is used to inhale ambient air and introduce it into the NO3 generator;

[0021] The power supply component is connected to the NO3 generator, and the power supply component supplies power to the NO3 generator;

[0022] The control module adjusts the air supply component and the power supply component according to the detection result, and the operating parameters of the air supply component or the temperature parameters of the NO3 generating module, so that the NO3 output generated by the NO3 generating module is greater than or equal to a preset stable output.

[0023] In another aspect of the present invention, preferably,

[0024] The NO3 generator includes a single reactor or a double reactor;

[0025] When the NO3 generator is a single reactor;

[0026] The single reactor is connected to the air supply component, which sucks in ambient air and introduces it into the single reactor. The power supply component is connected to the single reactor, and supplies power to the single reactor.

[0027] In another aspect of the present invention, preferably, when the NO3 generator is a dual reactor;

[0028] The dual reactor includes a first reactor and a second reactor, the gas supply component includes a first gas supply component and a second gas supply component, and the power supply component includes a first power supply component and a second power supply component;

[0029] The first gas supply component is connected to the first reactor, and the first power supply component supplies power to the first reactor;

[0030] The second gas supply component is connected to the second reactor, and the second power supply component supplies power to the second reactor;

[0031] The first reactor, the second reactor and the NO3 detection module are connected in pairs;

[0032] The first air supply component sucks in ambient air or O2 and introduces it into the first reactor to generate O3;

[0033] The ambient air sucked in by the second air supply component is introduced into the second reactor to generate NO and NO2;

[0034] O3 reacts with NO and NO2 to form NO3.

[0035] In another aspect of the present invention, preferably, the NO3 detection module includes a light source, a sensor and a gas chamber;

[0036] The light source is used to generate light;

[0037] The sensor is used to detect the concentration of NO3 in the generated gas;

[0038] The gas chamber is used to contain the generated gas and reflect the light generated by the light source;

[0039] The generated gas flows through the gas chamber, the light generated by the light source is reflected in the gas chamber, and the sensor obtains the concentration of NO3 in the generated gas based on the absorption of the reflected light by the generated gas;

[0040] In another aspect of the present invention, preferably, the prefabricated solution supply module includes a water supply component and a supply tank body, the supply tank body is used to accommodate the acidic aqueous solution to be treated, and the water supply component passes the acidic aqueous solution to be treated into the activation module.

[0041] In another aspect of the present invention, preferably, a control method for a disinfection system for treating an acidic aqueous solution by activation of NO3 gas is provided. The control method is applicable to the disinfection system as described above, and the control method comprises:

[0042] The ambient air inhaled by the NO3 generation module is generated into generated gas and state parameters are detected, the generated gas is passed into the NO3 detection module, and the detected state parameters are transmitted to the control module;

[0043] The NO3 detection module detects the NO3 concentration in the generated gas, transmits the detection result to the control module, and passes the generated gas into the activation module;

[0044] The generated gas and the acidic aqueous solution to be treated are activated in the activation module to generate activated water;

[0045] The control module calculates the real-time output of NO3 in the generated gas of the NO3 generating module according to the detection result and the detection state parameter;

[0046] The operating parameters of the NO3 generating module are adjusted according to the real-time NO3 production in the generated gas, so that the NO3 production in the generated gas by the NO3 generating module is greater than or equal to a preset stable production.

[0047] In another aspect of the present invention, preferably, the real-time production of NO3 in the generated gas of the NO3 generating module is calculated by the following formula:

[0048] P=V×C NO3

[0049] Wherein, P represents the real-time production of NO3 in the generated gas, V represents the flow rate of the gas supply component, and C NO3 Indicates that the NO3 detection module detects the NO3 concentration in the generated gas.

[0050] In another aspect of the present invention, preferably,

[0051] Adjusting the operating parameters of the NO3 generating module according to the real-time NO3 production in the generated gas so that the NO3 production in the generated gas by the NO3 generating module is greater than or equal to a preset stable production includes:

[0052] Obtaining NO3 production at a first moment, expressed as a first production; the power of the power supply component at the first moment is a first power, the flow rate of the gas supply component at the first moment is a first flow rate, and the temperature of the temperature detection component at the first moment is a first temperature;

[0053] If the first yield is less than the stable yield;

[0054] If the first temperature is higher than a first threshold;

[0055] Stop the power supply component and adjust the flow rate of the gas supply component to the maximum;

[0056] If the first temperature is between the second threshold and the first threshold;

[0057] Reduce the power of the power supply component by half and adjust the flow rate of the air supply component to the maximum;

[0058] If the first temperature is lower than a second threshold;

[0059] Determine whether it is an initial adjustment;

[0060] If it is the first adjustment, reduce the power of the power supply component and increase the flow rate of the air supply component;

[0061] If it is not the first adjustment, after adjusting the power of the power supply component to the first power and the flow rate of the air supply component to the first flow rate at the same time, increase the power of the power supply component;

[0062] The first threshold is 55-60°C; the second threshold is 40-45°C.

[0063] In another aspect of the present invention, preferably,

[0064] Adjusting the NO3 generating module according to the real-time NO3 production in the generated gas so that the NO3 production in the generated gas by the NO3 generating module is greater than or equal to a preset stable production includes:

[0065] Obtaining the NO3 production at a first moment, denoted as a first production; the power of the power supply component at the first moment is a first power, and the flow rate of the gas supply component at the first moment is a first flow rate;

[0066] If the first output is less than the stable output, calculating a first decreasing rate of the first output relative to the stable output;

[0067] The control module reduces the power of the power supply component to a second power and increases the flow rate of the air supply component to a second flow rate;

[0068] Obtain the NO3 production at the second moment, denoted as the second production;

[0069] If the second output is equal to the stable output, the control module controls the power of the power supply component to be the second power and the flow rate of the gas supply component to be the second flow rate;

[0070] If the second output is not equal to the stable output, calculating a second decreasing rate of the second output relative to the stable output;

[0071] If the second descent rate is greater than the first descent rate;

[0072] The control module simultaneously adjusts the power of the power supply component to the first power and the flow rate of the air supply component to the first flow rate, and increases the power of the power supply component to the third power.

[0073] (3) Beneficial effects

[0074] The above technical solution of the present invention has the following beneficial technical effects:

[0075] The present invention adopts a plasma indirect treatment method for aqueous solution, which is to pass plasma activated gas into the acidic aqueous solution to activate it, effectively avoiding the problems of electrode corrosion and impurities affecting biosafety caused by direct plasma treatment.

[0076] The present invention is provided with a NO3 detection module and a control module. The NO3 detection module monitors the instantaneous concentration of NO3 generated by the NO3 generation module in real time, and then feeds back the detection result to the control module. The control module ensures that the NO3 output is greater than or equal to a preset stable output; it overcomes the technical difficulties of low NO3 preparation efficiency and unstable NO3 output, which are prone to significant changes with discharge parameters and environmental conditions, and ensures the high preparation efficiency of plasma indirect activated water and the consistency of its preparation quality.

[0077] The present invention provides a prefabricated solution supply module, and the acid in the prefabricated solution supply module makes up for the deficiency of NO3 activation in acidifying the aqueous solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0078] Figure 1 It is a block diagram of the overall structure of an embodiment of the present invention;

[0079] Figure 2 is an overall structural block diagram of another embodiment of the present invention;

[0080] Figure 3 is a connection structure diagram of an embodiment of the present invention;

[0081] Figure 4 is a schematic diagram of the activation chamber structure of one embodiment of the present invention;

[0082] Figure 5 is a flow chart of a control method according to an embodiment of the present invention;

[0083] Figure 6 This is a diagram of the detection results of the NO3 detection module according to one embodiment of the present invention;

[0084] Figure 7 This is a diagram showing the sterilization effect of Staphylococcus aureus according to an embodiment of the present invention.

[0085] Figure 8 This is a comparative diagram of the bactericidal effect on Staphylococcus aureus according to an embodiment of the present invention.

[0086] Reference numerals:

[0087] 100: NO3 generation module, 110: air supply component, 120: NO3 generator, 130: power supply component, 140: temperature detection component, 121: single reactor, 122: first reactor, 123: second reactor, 111: first air supply component, 112: second air supply component, 131: first power supply component, 132: second power supply component,

[0088] 200: NO3 detection module, 210: light source, 220: sensor, 230: gas chamber,

[0089] 300: prefabricated solution supply module, 310: water supply component, 320: supply tank body,

[0090] 400: Activation module, 410: Activation chamber, 411: Activation chamber air inlet, 412: Activation chamber air outlet, 413: Silicone sleeve, 414: Aeration net, 415: One-way valve,

[0091] 500: Control module. DETAILED DESCRIPTION

[0092] To make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessary confusion of the concepts of the present invention.

[0093] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0094] In the description of the present invention, it should be noted that the terms "first", "second" and "third" are only used for descriptive purposes and should not be understood as indicating or implying relative importance.

[0095] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0096] The present invention will be described in more detail below with reference to the accompanying drawings. In each of the accompanying drawings, identical elements are represented by similar reference numerals. For the sake of clarity, the various parts in the accompanying drawings are not drawn to scale.

[0097] Example 1

[0098] A disinfection system for treating acidic aqueous solutions using NO3 gas activation. NO3 gas is a plasma, which is an unbound macroscopic system composed of a large number of charged particles. It contains free electrons, free ions, and may also contain neutral particles. It is the fourth state of matter. Air discharge under cold atmospheric pressure produces low-temperature plasma, and N2 molecules and O2 molecules in the air are excited or ionized into N atoms, O atoms, and O2 - etc., and combine to form O3, NO and NO2, etc., and O3 will further oxidize low-valent nitrogen oxides into gaseous high-valent nitrogen oxides such as nitrogen trioxide (NO3) and nitrogen pentoxide (N2O5). Plasma-activated water is a water solution directly or indirectly treated by plasma, containing a high density of liquid-phase reactive nitrogen oxides (RONS), including nitrate (NO3 - ), hydrogen peroxide (H2O2) and ozone (O3) and other long-lived substances, as well as hydroxyl radicals (·OH), singlet oxygen ( 1 O2), superoxide anion (O2 - ) and peroxynitrite (ONOO -These substances make plasma-activated water have strong oxidizing properties and certain cell selectivity, which can play a huge role in sterilization and disinfection. Therefore, plasma-activated water is considered to be a new type of sterilizer.

[0099] Compared with traditional disinfectants and antibiotics, plasma activated water has no chemical residue, no side effects, no drug resistance, is environmentally friendly to prepare, economical to produce and has stronger sterilization and disinfection capabilities when applied to the human body; plasma indirect treatment produces a gas-activated aqueous solution rich in nitrogen oxides (RONS), in which high-valent nitrogen oxides (NO x ), especially NO3, which has high solubility and strong chemical activity, can induce numerous short-lived active species. Stable and sufficient amounts of high-valent nitrogen oxides are key to achieving efficient sterilization in indirect plasma-activated water. The NO3 production significantly influences the low pH of indirect plasma-activated water and the generation of active species within it.

[0100] Figure 1 FIG. 1 shows an overall structural block diagram of an embodiment of the present invention. Figure 3 FIG. 1 shows a connection structure diagram of an embodiment of the present invention; FIG. Figure 1 and Figure 3 Shown, including:

[0101] NO3 generation module 100, NO3 detection module 200, prefabricated solution supply module 300, activation module 400 and control module 500;

[0102] The NO3 generation module 100, the NO3 detection module 200 and the activation module 400 are in communication;

[0103] The prefabricated solution supply module 300 is in communication with the activation module 400;

[0104] The NO3 generation module 100 and the NO3 detection module 200 are respectively connected to the control module signal 500;

[0105] The NO3 generating module 100 generates generated gas from the inhaled ambient air and detects state parameters, passes the generated gas into the NO3 detecting module 200, and transmits the detected state parameters to the control module 500. The generated gas contains NO3;

[0106] The NO3 detection module 200 is used to detect the NO3 concentration in the generated gas, transmit the detection result to the control module 500, and pass the generated gas into the activation module 400;

[0107] The control module 500 adjusts the NO3 generating module 100 according to the detection result and the detection state parameter, so that the NO3 output generated by the NO3 generating module 100 is greater than or equal to a preset stable output;

[0108] The prefabricated solution supply module 300 is used to store the acidic aqueous solution to be treated and pass the acidic aqueous solution to be treated into the activation module 400;

[0109] The activation module 400 is used to mix the generated gas with the acidic aqueous solution to be treated, so as to activate the acidic aqueous solution to be treated.

[0110] Furthermore, in this embodiment, the NO3 generating module 100 includes: an air supply component 110, a NO3 generator 120, a power supply component 130 and a temperature detection component 140;

[0111] The air supply component 110, the power supply component 130 and the temperature detection component 140 are respectively connected to the control module 500 by signal;

[0112] The detection state parameters include the operating parameters of the air supply component and the temperature parameters of the NO3 generating module;

[0113] The air supply component 110 is connected to the NO3 generator 120. The air supply component 110 is used to inhale ambient air and introduce it into the NO3 generator 120. The air supply component 110 transmits the air supply component operating parameters to the control module 500.

[0114] The power supply component 130 is connected to the NO3 generator 120, and the power supply component 130 supplies power to the NO3 generator 120;

[0115] The temperature detection component 140 detects the temperature parameters of the NO3 generating module 100 and transmits the temperature parameters of the NO3 generating module 100 to the control module 500;

[0116] The control module 500 adjusts the air supply component 110 and the power supply component 130 according to the detection result and the air supply component operating parameters or the temperature parameters of the NO3 generating module, so that the NO3 output generated by the NO3 generating module 100 is greater than or equal to the preset stable output.

[0117] In this embodiment, the air delivery component 110 includes an air pump with adjustable flow rate, which is connected in series with the NO3 generator 120 air circuit. The adjustable air pump includes a vortex air pump, a membrane air pump and a turbine air pump. The air pump with adjustable flow rate adjusts the flow rate by changing the duty cycle of the PWM wave or the power supply voltage, and feeds back the flow rate through the number of pulses.

[0118] In this embodiment, the power supply component 130 includes a high-voltage power supply, which supplies power to the NO3 generator 120. The high-voltage power supply includes a high-voltage pulse power supply, a high-voltage radio frequency power supply, a high-voltage sinusoidal power supply and a high-voltage direct current power supply. The amount of gas introduced into the NO3 generator is controlled by an air pump with an adjustable flow rate, and the NO3 generator discharges under the adjustable high voltage provided by the high-voltage power supply.

[0119] In this embodiment, the temperature detection component 140 includes a thermometer or a temperature sensor. The temperature detection component 140 is used to detect the temperature of the NO 3 generating module 100 and feed the temperature back to the control module.

[0120] like Figure 1 As shown, the NO3 generator 120 includes a single reactor 121;

[0121] The single reactor 121 is connected to the air supply member 110, which draws ambient air into the reactor 121. The power supply member 130 is connected to the reactor 121 to supply power to the reactor 121. The reactor 121 uses air as the working gas to directly generate NO3. The discharge method of the NO3 reactor includes, but is not limited to, at least one of dielectric barrier discharge, sliding arc discharge, jet discharge, corona discharge, microwave discharge, and radio frequency discharge.

[0122] Figure 2 FIG. 1 shows an overall structural block diagram of another embodiment of the present invention, as shown in FIG. Figure 2 As shown,

[0123] The NO3 generator 120 includes a dual reactor;

[0124] The NO3 generator includes a first reactor 122 and a second reactor 123, the air supply component 110 includes a first air supply component 111 and a second air supply component 112, and the power supply component 130 includes a first power supply component 131 and a second power supply component 132;

[0125] The first gas supply component 111 is connected to the first reactor 122, and the first power supply component 131 supplies power to the first reactor 122;

[0126] The second gas supply component 112 is connected to the second reactor 123, and the second power supply component 132 supplies power to the second reactor 123;

[0127] The first reactor 122, the second reactor 123 and the NO3 detection module 200 are connected in pairs; the three are connected by a three-way valve to achieve two-to-two communication.

[0128] The first air supply component 111 sucks in ambient air or O2 and introduces it into the first reactor 122 to generate O3;

[0129] The ambient air sucked in by the second air delivery component 112 is introduced into the second reactor 123 to generate NO and NO2;

[0130] O3 reacts with NO and NO2 to form NO3.

[0131] The dual reactor discharge method includes, but is not limited to, at least one of dielectric barrier discharge, sliding arc discharge, jet discharge, corona discharge, microwave discharge, and radio frequency discharge. The dual reactor generates reactive gases with an N2O5 concentration greater than 40 ppm and an O3 concentration greater than 300 ppm, with a gas flow rate of no less than 1 SLM.

[0132] In this embodiment, further, the NO3 detection module 200 includes a light source 210, a sensor 220 and a gas chamber 230;

[0133] The light source 210 includes a single wavelength laser or visible light;

[0134] The sensor 220 includes a single wavelength sensitive probe or a multi-wavelength spectrometer that only measures 662 nm;

[0135] The gas chamber 230 includes a cell body, a reflector and a window;

[0136] The detection principle of NO3 is visible light absorption spectroscopy, and the concentration of NO3 is quantitatively measured by measuring the absorbance at 662nm; the optical paths between the light source 210 and the gas chamber 230 and between the gas chamber 230 and the sensor 220 are connected, and the air inlet of the gas chamber 230 is connected to the air outlet of the NO3 generating module 100; the light source 210 emits visible light into the gas chamber 230 filled with the gas to be measured, and the visible light is reflected multiple times by the reflector and is captured by the sensor 220 after reaching a certain optical path (>50cm). The concentration of NO3 is measured by referring to the degree of absorption of the reflected light by the gas.

[0137] Furthermore, in this embodiment, the reflector inside the gas chamber 230 is used to extend the optical path, and the optical path range is above 50 cm; the reflector coating materials include gold film, aluminum film, silver film and dielectric film; the cell body material includes glass, stainless steel, silicon and composite materials; the window material includes fused quartz, calcium fluoride, barium fluoride and zinc selenide.

[0138] Furthermore, in this embodiment, the prefabricated solution supply module 300 includes a water supply component 310 and a supply tank body 320. The water supply component 310 includes an adjustable-speed water pump, a pneumatically controlled pump, an electromagnetically controlled pump, or a peristaltic pump. The prefabricated solution supply module 300 provides the activation chamber 400 with the acidic aqueous solution to be treated. The acidic aqueous solution to be treated can be a prefabricated acidic solution that is used directly as the acidic aqueous solution to be treated, or a prefabricated acidic concentrate and water are added to prepare the acidic aqueous solution to be treated.

[0139] The acidic aqueous solution to be treated is mainly composed of acid, which is used to make up for the deficiency of NO3 activation in acidifying the aqueous solution. The types of the acid include but are not limited to sulfuric acid, hydrochloric acid and nitric acid. The pH of the acidic aqueous solution to be treated is less than 4;

[0140] Furthermore, H2O2 is added to the acidic prefabricated solution to further enhance the sterilization ability. The concentration of H2O2 in the acidic prefabricated solution is in the range of 0.3-3%. The solvent of the acidic prefabricated solution includes but is not limited to purified water and physiological saline.

[0141] Figure 4 FIG. 1 shows a schematic diagram of the activation chamber structure of an embodiment of the present invention; FIG. Figure 4 As shown,

[0142] Furthermore, the activation module 400 includes an activation chamber 410, which includes an activation chamber air inlet 411, an activation chamber air outlet 412, an activation chamber water inlet, and an activation chamber water outlet. The activation chamber air inlet 411 is provided at the lower end of the activation chamber 410 and is in gas communication with the air outlet of the NO3 detection module gas chamber. The activation chamber air outlet 412 is provided at the upper end of the activation chamber and is in gas communication with the exhaust gas treatment end.

[0143] The activation chamber 410 further includes: a silicone sleeve 413, an aeration net 414, and a one-way valve 415; the silicone sleeve 413 is disposed on the activation chamber air inlet and activation chamber air outlet of the activation chamber to ensure the sealing of the air outlet; the aeration net 414 is disposed between the activation chamber air inlet 411 and the activation chamber 410. When gas passes through the aeration net 414, a large number of fine bubbles are formed on the other side of the aeration net 414, increasing the activation area with the prefabricated acidic aqueous solution; the one-way valve 415 is disposed on the silicone sleeve 413 to control the one-way flow of gas; the activation chamber water inlet is connected to the water outlet of the adjustable water pump of the prefabricated solution supply module, and the activation chamber water outlet is connected to the user-end water channel.

[0144] The present invention adopts a plasma indirect treatment method for aqueous solution, which is to pass plasma activated gas into the acidic aqueous solution to activate it, effectively avoiding the problems of electrode corrosion and impurities affecting biosafety caused by direct plasma treatment.

[0145] The present invention is provided with a NO3 detection module and a control module. The NO3 detection module monitors the instantaneous concentration of NO3 generated by the NO3 generation module in real time, and then feeds back the detection result to the control module. The control module ensures that the NO3 output is greater than or equal to a preset stable output; it overcomes the technical difficulties of low NO3 preparation efficiency and unstable NO3 output, which are prone to significant changes with discharge parameters and environmental conditions, and ensures the high preparation efficiency of plasma indirect activated water and the consistency of its preparation quality.

[0146] The present invention incorporates a prefabricated solution supply module, using a prefabricated acidic aqueous solution as the activation medium. The acid in the prefabricated solution supply module compensates for the insufficient acidification of the aqueous solution by NO activation. While enhancing sterilization and disinfection capabilities, the prefabricated acidic aqueous solution offers numerous advantages, including convenient solute and solvent access, low cost, and a simple preparation process.

[0147] The NO3 generator of the present invention can use a single reactor with a simple structure. While ensuring the sterilization effect, it realizes the lightweight, miniaturization and portability of the device, broadens its application scenarios, and has significant advantages in transportation, outdoor operations, space occupation and other issues.

[0148] Example 2

[0149] A control method for a disinfection system for treating an acidic aqueous solution by activation of NO3 gas.

[0150] Figure 5 The control method according to one embodiment of the present invention is applicable to the disinfection system described above, and the control method includes:

[0151] The prefabricated solution supply module introduces the acidic aqueous solution to be treated into the activation module;

[0152] The ambient air inhaled by the NO3 generating module is converted into generated gas and state parameters are detected, the generated gas is passed into the NO3 detecting module, and the detected state parameters are transmitted to the control module;

[0153] The NO3 detection module detects the NO3 concentration in the generated gas, transmits the detection result to the control module, and passes the generated gas into the activation module;

[0154] The generated gas and the prefabricated solution are activated in the activation module to generate activated water;

[0155] The control module calculates the real-time output of NO3 in the generated gas of the NO3 generating module according to the detection result and the detection state parameter;

[0156] The NO3 generating module is adjusted according to the real-time NO3 production in the generated gas, so that the NO3 production in the generated gas by the NO3 generating module is greater than or equal to a preset stable production.

[0157] In this embodiment, the real-time production of NO3 in the generated gas of the NO3 generating module is calculated by the following formula:

[0158]

[0159] Wherein, P represents the real-time production of NO3 in the generated gas, V represents the flow rate of the gas supply component, and C NO3 Indicates that the NO3 detection module detects the NO3 concentration in the generated gas.

[0160] In one embodiment of the present invention, further, adjusting the NO3 generating module according to the real-time NO3 production in the generated gas so that the NO3 production in the generated gas by the NO3 generating module is greater than or equal to a preset stable production comprises:

[0161] Obtaining NO3 production at a first moment, expressed as a first production; the power of the power supply component at the first moment is a first power, the flow rate of the gas supply component at the first moment is a first flow rate, and the temperature of the temperature detection component at the first moment is a first temperature;

[0162] If the first yield is less than the stable yield;

[0163] If the first temperature is higher than 55°C;

[0164] Stop the power supply component and adjust the flow rate of the gas supply component to the maximum;

[0165] If the first temperature is between 45°C and 55°C;

[0166] Reduce the power of the power supply component by half and adjust the flow rate of the air supply component to the maximum;

[0167] If the first temperature is lower than 45°C;

[0168] Determine whether it is an initial adjustment;

[0169] If it is the first adjustment, reduce the power of the power supply component and increase the flow rate of the air supply component;

[0170] If it is not the first adjustment, after adjusting the power of the power supply component to the first power and the flow rate of the air supply component to the first flow rate at the same time, increase the power of the power supply component.

[0171] In another embodiment of the present invention, further, adjusting the NO3 generating module according to the real-time NO3 production in the generated gas so that the NO3 production in the generated gas by the NO3 generating module is greater than or equal to a preset stable production comprises:

[0172] Obtaining the NO3 production at a first moment, denoted as a first production; the power of the power supply component at the first moment is a first power, and the flow rate of the gas supply component at the first moment is a first flow rate;

[0173] If the first output is less than the stable output, calculating a first decreasing rate of the first output relative to the stable output;

[0174] The control module reduces the power of the power supply component to a second power and increases the flow rate of the air supply component to a second flow rate;

[0175] Obtain the NO3 production at the second moment, denoted as the second production;

[0176] If the second output is equal to the stable output, the control module controls the power of the power supply component to be the second power and the flow rate of the gas supply component to be the second flow rate;

[0177] If the second output is not equal to the stable output, calculating a second decreasing rate of the second output relative to the stable output;

[0178] If the second descent rate is greater than the first descent rate;

[0179] The control module simultaneously adjusts the power of the power supply component to the first power and the flow rate of the air supply component to the first flow rate, and increases the power of the power supply component to the third power.

[0180] Figure 6 : is a diagram of the detection result of the NO3 detection module according to an embodiment of the present invention; Figure 6 As shown, the system uses ambient air, and the adjustable air pump gas flow rate is set to 2SLM. By adjusting the power of the high-voltage power supply, the NO3 generator operates under the state of four power levels of 20W, 30W, 40W and 50W. After discharging for one minute, the visible light absorption spectroscopy of the NO3 detection module detects that NO3 can be prepared under four power levels, and its curve shape remains basically unchanged over time. Among them, the NO3 gas preparation efficiency is the highest when the NO3 generator is under the working state of 40W, followed by 50W and 30W. The NO3 generator has the lowest NO3 preparation efficiency when it is under the working state of 20W. The above test results show that the NO3 preparation efficiency of the present invention is high, the NO3 concentration is stable and is not easily significantly changed with discharge parameters and environmental conditions, effectively solving the problems of low preparation efficiency and poor consistency of current plasma-activated water.

[0181] The following are examples of the sterilization effect of NO3 gas activation treatment of acidic aqueous solution:

[0182] Figure 7 : is a diagram showing the sterilization effect of Staphylococcus aureus according to an embodiment of the present invention. Figure 7As shown, the treatment method involves using a NO3 gas-activated acidic aqueous solution disinfection device to activate 100ml of activated acidic aqueous solution and 100μl of a Staphylococcus aureus solution with an OD600 of approximately 1, for 5 minutes. The acidic aqueous solution contains HNO3 and 0.5% H2O2, and has a pH of 3. Measurement of the number of Staphylococcus aureus in the solution reveals that neither deionized water nor the acidic aqueous solution, used as controls, has any inactivation ability. However, the deionized water treated with NO3 exhibits a sterilization capability four orders of magnitude greater than that of the deionized water; the acidic aqueous solution treated with NO3 completely kills the bacteria.

[0183] Figure 8 : is a comparative diagram of the bactericidal effect of Staphylococcus aureus according to an embodiment of the present invention, as shown in FIG. Figure 8 As shown, the treatment method involves treating an activated acidic aqueous solution prepared in an acidic aqueous solution disinfection apparatus using NO3 gas activation with 100 μl of a Staphylococcus aureus solution with an OD600 of approximately 1, for 5 minutes. The HNO3 group contains only HNO3 as the solute, which has a pH of 3. The HNO3+H2O2 group contains an equal amount of HNO3 as the HNO3 group, resulting in a pH of 3, and also contains 0.5% H2O2 as the solute. In the embodiment, the HNO3 group and the HNO3+H2O2 group were sterilized with the solution volume as a variable, and the volumes were divided into 500, 1000, 1500 and 2000 ml. A comparison of the number of Staphylococcus aureus in the solution showed that the HNO3 group had very weak bactericidal ability in the four volume experiments, with a sterilization ability of at most 2 orders of magnitude; the HNO3+H2O2 group could completely kill the bacterial solution at water volumes of 500 and 1000 ml, and had a sterilization ability of 6 and 5 orders of magnitude at water volumes of 1500 and 2000 ml, respectively.

[0184] The above experimental results show that the disinfection device for treating acidic aqueous solution by activation of NO3 gas can prepare a large amount of prefabricated acidic aqueous solution at one time under the condition of appropriate solute, thereby improving the production efficiency of disinfectant water.

[0185] It should be understood that the above-described specific embodiments of the present invention are merely illustrative or illustrative of the principles of the present invention and do not constitute limitations of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included within the scope of protection of the present invention. In addition, the appended claims are intended to cover all variations and modifications that fall within the scope and metes and bounds of the appended claims, or equivalents thereof.

[0186] While the above description does not provide detailed technical details regarding patterning and etching of each layer, those skilled in the art will appreciate that various conventional methods can be used to form layers, regions, and the like in desired shapes. Furthermore, those skilled in the art may devise methods that differ from those described above to achieve the same structure.

[0187] The present invention has been described above with reference to the embodiments thereof. However, these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. The scope of the present invention is defined by the appended claims and their equivalents. Those skilled in the art may make various substitutions and modifications without departing from the scope of the present invention, and such substitutions and modifications are intended to fall within the scope of the present invention.

[0188] Although the embodiments of the present invention have been described in detail, it should be understood that the various changes, substitutions, and alterations could be made hereto without departing from the spirit and scope of the invention.

[0189] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A disinfection system for treating acidic aqueous solution by activation of NO3 gas, characterized in that: include: NO3 generation module (100), NO3 detection module (200), activation module (400) and control module (500); The NO3 generation module (100), the NO3 detection module (200) and the activation module (400) are connected in sequence; The NO3 generating module (100) is used to generate generated gas from the inhaled ambient air, wherein the generated gas includes NO3; The NO3 detection module (200) is used to detect the generated gas, output the detection result to the control module (500), and output the generated gas after detection to the activation module (400); The activation module (400) contains the acidic aqueous solution to be treated, and the generated gas is mixed with the acidic aqueous solution to be treated in the activation module (400) to activate the acidic aqueous solution to be treated; The control module (500) is used to adjust the operating parameters of the NO3 generating module (100) according to the detection result and the state parameters of the NO3 generating module (100), so that the NO3 output generated by the NO3 generating module (100) is greater than or equal to a preset stable output; The NO3 generating module (100) comprises: an air supply component (110), an NO3 generator (120), a power supply component (130), and a temperature detection component (140); the state parameters comprise operating parameters of the air supply component and temperature parameters of the NO3 generating module; the temperature detection component (140) is used to detect the temperature parameters of the NO3 generating module (100); The air supply component (110) is connected to the NO3 generator (120), and the air supply component (110) is used to inhale ambient air and introduce it into the NO3 generator (120); The power supply component (130) is connected to the NO3 generator (120), and the power supply component (130) supplies power to the NO3 generator (120); The control module (500) adjusts the air supply component (110) and the power supply component (130) according to the detection result and the operating parameters of the air supply component or the temperature parameters of the NO3 generating module, so that the NO3 output generated by the NO3 generating module (100) is greater than or equal to a preset stable output.

2. The disinfection system according to claim 1, characterized in that The disinfection system further comprises a prefabricated solution supply module (300); The prefabricated solution supply module (300) is used to store the acidic aqueous solution to be treated and pass the acidic aqueous solution to be treated into the activation module (400); The acidic aqueous solution to be treated includes an inorganic acid; The inorganic acid includes sulfuric acid, hydrochloric acid and nitric acid; The pH of the acidic aqueous solution to be treated is less than 4.

3. The disinfection system according to claim 1, characterized in that The NO3 generator (120) includes a single reactor (121) or a dual reactor; When the NO3 generator (120) is a single reactor (121); The single reactor (121) is connected to the air supply component (110), the air supply component (110) sucks in ambient air and introduces it into the single reactor (121), the power supply component (130) is connected to the single reactor (121), and the power supply component (130) supplies power to the single reactor (121); When the NO3 generator (120) is a dual reactor; The dual reactor includes a first reactor (122) and a second reactor (123); the air supply component (110) includes a first air supply component (111) and a second air supply component (112); and the power supply component (130) includes a first power supply component (131) and a second power supply component (132); The first gas supply component (111) is connected to the first reactor (122), and the first power supply component (131) supplies power to the first reactor (122); The second air supply component (112) is connected to the second reactor (123), and the second power supply component (132) supplies power to the second reactor (123); The first reactor (122), the second reactor (123) and the NO3 detection module (200) are connected in pairs; The first air supply component (111) sucks in ambient air or O2 and introduces it into the first reactor (122) to generate O3; The second air supply component (112) sucks in ambient air and introduces it into the second reactor (123) to generate NO and NO2; O3 reacts with NO and NO2 to form NO3.

4. The disinfection system according to claim 1, characterized in that The NO3 detection module (200) comprises a light source (210), a sensor (220) and a gas chamber (230); The light source (210) is used to generate light; The sensor (220) is used to detect the concentration of NO3 in the generated gas; The gas chamber (230) is used to accommodate the generated gas and reflect the light generated by the light source (210); The generated gas flows through the gas chamber (230), the light generated by the light source (210) is reflected in the gas chamber (230), and the sensor (220) obtains the concentration of NO3 in the generated gas based on the absorption of the reflected light by the generated gas.

5. The disinfection system according to claim 2, characterized in that The prefabricated solution supply module (300) comprises a water supply component (310) and a supply tank body (320). The supply tank body (320) is used to accommodate the acidic aqueous solution to be treated. The water supply component (310) passes the acidic aqueous solution to be treated into the activation module (400).

6. A control method for a disinfection system for treating an acidic aqueous solution by activation of NO3 gas, characterized in that: The control method is applicable to the disinfection system according to any one of claims 1 to 5, and the control method includes: The ambient air inhaled by the NO3 generating module is converted into generated gas and state parameters are detected, the generated gas is passed into the NO3 detecting module, and the detected state parameters are transmitted to the control module; The NO3 detection module detects the NO3 concentration in the generated gas, transmits the detection result to the control module, and passes the generated gas into the activation module; The generated gas and the acidic aqueous solution to be treated are activated in the activation module to generate activated water; The control module calculates the real-time output of NO3 in the generated gas of the NO3 generating module according to the detection result and the detection state parameter; The operating parameters of the NO3 generating module are adjusted according to the real-time NO3 production in the generated gas, so that the NO3 production in the generated gas by the NO3 generating module is greater than or equal to a preset stable production.

7. The control method according to claim 6, characterized in that: The real-time output of NO3 in the generated gas of the NO3 generating module is calculated by the following formula: Wherein, P represents the real-time production of NO3 in the generated gas, V represents the flow rate of the gas supply component, and C NO3 Indicates that the NO3 detection module detects the NO3 concentration in the generated gas.

8. The control method according to claim 7, characterized in that: Adjusting the operating parameters of the NO3 generating module according to the real-time NO3 production in the generated gas so that the NO3 production in the generated gas by the NO3 generating module is greater than or equal to a preset stable production includes: Obtaining NO3 production at a first moment, expressed as a first production; the power of the power supply component at the first moment is a first power, the flow rate of the gas supply component at the first moment is a first flow rate, and the temperature of the temperature detection component at the first moment is a first temperature; If the first yield is less than the stable yield; If the first temperature is higher than a first threshold; Stop the power supply component and adjust the flow rate of the gas supply component to the maximum; If the first temperature is between the second threshold and the first threshold; Reduce the power of the power supply component by half and adjust the flow rate of the air supply component to the maximum; If the first temperature is lower than a second threshold; Determine whether it is an initial adjustment; If it is the first adjustment, reduce the power of the power supply component and increase the flow rate of the air supply component; If it is not the first adjustment, after adjusting the power of the power supply component to the first power and the flow rate of the air supply component to the first flow rate at the same time, increase the power of the power supply component; The first threshold is 55-60°C; the second threshold is 40-45°C.

9. The control method according to claim 7, characterized in that: Adjusting the NO3 generating module according to the real-time NO3 production in the generated gas so that the NO3 production in the generated gas by the NO3 generating module is greater than or equal to a preset stable production includes: Obtaining the NO3 production at a first moment, denoted as a first production; the power of the power supply component at the first moment is a first power, and the flow rate of the gas supply component at the first moment is a first flow rate; If the first output is less than the stable output, calculating a first decreasing rate of the first output relative to the stable output; The control module reduces the power of the power supply component to a second power and increases the flow rate of the air supply component to a second flow rate; Obtain the NO3 production at the second moment, denoted as the second production; If the second output is equal to the stable output, the control module controls the power of the power supply component to be the second power and the flow rate of the gas supply component to be the second flow rate; If the second output is not equal to the stable output, calculating a second decreasing rate of the second output relative to the stable output; If the second descent rate is greater than the first descent rate; The control module simultaneously adjusts the power of the power supply component to the first power and the flow rate of the air supply component to the first flow rate, and increases the power of the power supply component to the third power.

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