Preparation method and application of potential functional water

Abstract

The invention discloses a preparation method and application of potential functional water, and particularly relates to the technical field of disinfectant fluid preparation, the preparation method comprises the following steps: pretreatment: primarily treating tap water through a water inlet valve, a water pressure relay and a filter; adding saline water, namely pumping a concentrated aqueous solution containing sodium chloride or potassium chloride into the pretreated water; electrolysis is conducted under specific conditions, and the oxidation-reduction potential is controlled to be larger than 1100 mV and the like; collecting and storing: respectively collecting and storing acidic functional water in the anode chamber and alkaline functional water in the cathode chamber; controlling and monitoring, and ensuring the process to be stable and safe through a control module. The potential functional water is applied to the washing cage in the washing equipment, the alkaline functional water is used for replacing or partially replacing a detergent in the main washing bin and reducing the temperature, and the acidic functional water is used for neutralizing alkaline wastewater in the neutralizing bin, so that the advantages of energy conservation, consumption reduction, wastewater recycling and zero emission are realized, the preparation process can be optimized, and the antibacterial range of the functional water is widened.

Description

Technical Field

[0001] The present invention relates to the technical field of disinfectant water preparation, and more specifically, to a method for preparing electric potential functional water and application thereof. Background Art

[0002] In the washing industry, traditional washing methods face many problems. On the one hand, a large amount of detergent is usually required in the washing process, which not only increases the washing cost but also may pollute the environment. On the other hand, the high washing temperature (such as 85°C) also consumes a lot of energy. At the same time, the treatment of wastewater generated in the washing process is also a problem, especially the discharge of alkaline wastewater has caused a great burden on the environment.

[0003] Some existing technologies attempt to solve these problems, but some disinfectant water preparation technologies can replace some detergents to a certain extent, but they fail to effectively solve the problem of alkaline wastewater treatment and reuse. Moreover, in the preparation process of functional water, there is a lack of precise control and optimization of the preparation method, which makes it difficult for the quality and preparation efficiency of functional water to meet actual needs.

[0004] Therefore, a method for preparing potential functional water and its application are proposed. Summary of the invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a method for preparing potential functional water and application thereof to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a method for preparing electric potential functional water, comprising the following steps:

[0007] a) Pretreatment: introducing tap water into the pretreatment module, controlling the water inlet volume through the water inlet valve, monitoring the water pressure through the water pressure relay, and removing insoluble substances and colored and odorous impurities in the water through the filter, wherein the filter contains at least one of activated carbon, glass fiber, polyester, and PP cotton;

[0008] b) Brine addition: a concentrated aqueous solution containing sodium chloride or potassium chloride is pumped from a brine tank into the pretreated water through a motor and a pump head to form an electrolyte to be electrolyzed;

[0009] c) Electrolysis: introducing the electrolyte to be electrolyzed into the electrolysis module, and performing electrolysis under the action of a DC voltage. The electrolytic cell is two identical intermittent electrolytic cells connected in parallel, and an anode electrode plate, a cathode electrode plate and a partition are provided in the electrolytic cell. The partition divides the electrolytic cell into an anode chamber and a cathode chamber. An anode water outlet pipe is provided in the anode chamber, and a cathode water outlet pipe is provided in the cathode chamber. By controlling the redox potential to be greater than 1100mV, water with different functions is produced in the anode chamber and the cathode chamber respectively;

[0010] d) Collection and storage: The acidic functional water produced in the anode chamber is introduced into the storage module through the anode outlet pipe for storage, and the alkaline functional water produced in the cathode chamber is introduced out through the cathode outlet pipe for subsequent use;

[0011] e) Control and monitoring: The redox potential in the electrolytic cell and the liquid level in the storage module are monitored by a control module, which includes a potential monitor and a liquid level sensor to ensure the stability and safety of the preparation process.

[0012] Preferably, in the electrolysis step c), the electrolysis process is optimized by adjusting parameters such as current density, electrolysis time and electrolyte concentration to improve the preparation efficiency and quality of functional water.

[0013] Preferably, the method further includes post-treating the collected acidic functional water and alkaline functional water to further remove impurities, adjust the pH value or enhance functional properties.

[0014] An application of the potential functional water in a washing device according to the above-mentioned method, wherein the prepared alkaline functional water is directly introduced into the main washing chamber of the washing device to replace or partially replace the traditional alkaline detergent, while reducing the washing temperature, thereby achieving the purpose of energy saving and consumption reduction and improving washing efficiency.

[0015] Preferably, the prepared acidic functional water is introduced into a neutralization bin of a washing device to neutralize the alkaline wastewater generated during the washing process, thereby achieving recycling and zero discharge of wastewater.

[0016] Preferably, the washing equipment is a washing cage, and by optimizing the ratio and timing of adding alkaline functional water and acidic functional water in different positions of the washing cage, precise control and optimization of the washing process can be achieved, thereby improving the washing quality and efficiency.

[0017] A preparation system comprising the above-mentioned potential functional water, the preparation system comprises a pretreatment module, a brine addition module, an electrolysis module, a storage module and a control module, and the modules are connected by pipelines and valves to form a complete preparation process.

[0018] Preferably, the electrolysis module further comprises an anode water outlet pipe, a cathode water outlet pipe and a stop valve, which are used to collect and lead out the functional water produced by the anode chamber and the cathode chamber respectively.

[0019] Preferably, the control module also includes an automatic sensor and a control system for real-time monitoring and adjusting various parameters in the preparation process to ensure the stability and safety of the preparation process.

[0020] A method for applying the above-mentioned potential functional water preparation system in a washing device, wherein the alkaline functional water and acidic functional water prepared by the preparation system are respectively introduced into the main washing chamber and neutralization chamber of the washing device, and precise control and optimization of the washing process are achieved by optimizing the addition ratio and timing.

[0021] The preparation method of potential functional water and its application provided by the present invention have the following beneficial effects:

[0022] 1. By directly introducing the prepared alkaline functional water into the main washing chamber of the washing equipment, it replaces or partially replaces the traditional alkaline detergent, reducing the amount of detergent used, thereby reducing the washing cost;

[0023] 2. After using this potential functional water, the washing temperature is reduced from the traditional 85°C to 50-60°C, which significantly reduces energy consumption and has energy-saving effects;

[0024] 3. The acidic functional water generated during the preparation process can be introduced into the neutralization bin of the washing equipment to neutralize the alkaline wastewater generated during the washing process, thereby realizing the recycling and zero discharge of wastewater and reducing pollution to the environment.

[0025] 4. During the preparation of potential functional water, the redox potential in the electrolytic cell and the liquid level in the storage module are monitored through the control module, and parameters such as current density, electrolysis time and electrolyte concentration can be adjusted to ensure the stability and safety of the preparation process and improve the preparation efficiency and quality of functional water.

[0026] 5. After antibacterial testing, both acidic functional water and alkaline functional water have high antibacterial rates against Staphylococcus aureus (98.5% and 97.0% respectively). Acidic functional water also has a certain antibacterial effect on Escherichia coli and Candida albicans, improving the sanitary quality after washing. DETAILED DESCRIPTION

[0027] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present invention.

[0028] The present embodiment provides a method for preparing electric potential functional water, comprising the following steps:

[0029] a) Pretreatment: introducing tap water into the pretreatment module, controlling the water inlet volume through the water inlet valve, monitoring the water pressure through the water pressure relay, and removing insoluble substances and colored and odorous impurities in the water through the filter, wherein the filter contains at least one of activated carbon, glass fiber, polyester, and PP cotton;

[0030] b) Brine addition: a concentrated aqueous solution containing sodium chloride or potassium chloride is pumped from a brine tank into the pretreated water through a motor and a pump head to form an electrolyte to be electrolyzed;

[0031] c) Electrolysis: introducing the electrolyte to be electrolyzed into the electrolysis module, and performing electrolysis under the action of a DC voltage. The electrolytic cell is two identical intermittent electrolytic cells connected in parallel, and an anode electrode plate, a cathode electrode plate and a partition are provided in the electrolytic cell. The partition divides the electrolytic cell into an anode chamber and a cathode chamber. An anode water outlet pipe is provided in the anode chamber, and a cathode water outlet pipe is provided in the cathode chamber. By controlling the redox potential to be greater than 1100mV, water with different functions is produced in the anode chamber and the cathode chamber respectively;

[0032] d) Collection and storage: The acidic functional water produced in the anode chamber is introduced into the storage module through the anode outlet pipe for storage, and the alkaline functional water produced in the cathode chamber is introduced out through the cathode outlet pipe for subsequent use;

[0033] e) Control and monitoring: The redox potential in the electrolytic cell and the liquid level in the storage module are monitored by a control module, which includes a potential monitor and a liquid level sensor to ensure the stability and safety of the preparation process.

[0034] In the electrolysis step c), the electrolysis process is optimized by adjusting parameters such as current density, electrolysis time and electrolyte concentration to improve the preparation efficiency and quality of functional water.

[0035] In specific implementation, tap water first enters the pretreatment module, the core component of which is the filter. The activated carbon in the filter mainly absorbs organic impurities and odors in the water, while the PP cotton intercepts particulate impurities in the water. The water inlet valve automatically adjusts according to the set water inlet volume to ensure a stable water flow into the system. The water pressure relay monitors the water pressure at all times and sends a signal when the water pressure is abnormal, so as to adjust the water inlet in time and ensure the normal operation of the entire system.

[0036] The concentrated aqueous solution of sodium chloride or potassium chloride in the brine tank is pumped into the pretreated water at a set flow rate through a motor-driven pump head. The key to this step is to ensure that the brine and the pretreated water are fully mixed to form a uniform electrolyte to provide the appropriate ion concentration for the electrolysis module;

[0037] After the electrolyte enters the electrolysis module, an electrolysis reaction occurs under the action of a DC voltage. The special design of the electrolytic cell (two identical intermittent electrolytic cells in parallel) is conducive to improving the efficiency and stability of electrolysis. The material selection of the anode electrode plate and the cathode electrode plate should take into account their conductivity and corrosion resistance to ensure the smooth progress of the electrolysis process. The partition divides the electrolytic cell into an anode chamber and a cathode chamber, so that the electrolysis products of the anode and cathode can be collected separately. By controlling the redox potential to be greater than 1100mV, the direction and degree of the electrolysis reaction can be accurately controlled. At the same time, the current density, electrolysis time, electrolyte concentration and other parameters can be adjusted to further optimize the electrolysis process and improve the efficiency and quality of functional water preparation.

[0038] The acidic functional water produced in the anode chamber and the alkaline functional water produced in the cathode chamber are introduced into different water storage tanks of the storage module through the anode outlet pipe and the cathode outlet pipe respectively. The storage module must ensure the good preservation of the functional water and prevent the pollution and influence of external factors on the water. The liquid level sensor monitors the liquid level of the water storage tank in real time. When the liquid level reaches the set upper or lower limit, the control system will make corresponding operations, such as stopping water intake or starting water pumping, to ensure the safety and stability of the storage process;

[0039] The control module plays a vital role in the entire preparation process. The potential monitor accurately monitors the redox potential in the electrolytic cell to ensure that the electrolysis reaction proceeds in the set direction and degree. The liquid level sensor monitors the liquid level in the storage module with high precision to provide accurate information for the control system. The automatic sensor can provide real-time feedback on various parameters of the electrolytic cell and water storage tank. The control system automatically adjusts the voltage and current during the electrolysis process and the water inlet and outlet of the water storage tank according to these parameters, thereby ensuring the stability and safety of the preparation process.

[0040] Example

[0041] Preparation system construction

[0042] Pretreatment module: A filter containing activated carbon and PP cotton is selected, the water inlet valve adopts a conventional electric valve, and the water pressure relay is set to alarm when the water pressure is lower than 0.2MPa.

[0043] Brine addition module: The brine tank is equipped with a sodium chloride aqueous solution with a concentration of 3 mol / L, the motor power is 500 W, and the pump head flow rate is 2 L / min.

[0044] Electrolysis module: Two identical intermittent electrolytic cells are connected in parallel, each with a capacity of 20L. The anode and cathode electrode plates are made of titanium plated with platinum, and the separator is made of polytetrafluoroethylene, which effectively divides the electrolytic cell into an anode chamber and a cathode chamber. The anode and cathode outlet pipes are both made of PVC with an inner diameter of 20mm, and the stop valve is a stainless steel ball valve.

[0045] Storage module: Two stainless steel water storage tanks with a capacity of 50L each are used to store acidic functional water and alkaline functional water respectively, and are connected to the control module through a liquid level sensor.

[0046] Control module: The potential monitor has an accuracy of ±10mV, the liquid level sensor has an accuracy of ±5mm, and the automatic sensor can provide real-time feedback on the various parameters of the electrolytic cell and water storage tank. The control system automatically adjusts the electrolysis process and water storage according to the set parameters.

[0047] Preparation process

[0048] Pretreatment: Introduce tap water into the pretreatment module, open the water inlet valve, control the water inlet volume to 5L / min, and remove insoluble substances and colored and odorous impurities in the water through the filter. The water pressure relay monitors the water pressure in real time to ensure that the water pressure is stable between 0.2-0.4MPa.

[0049] Brine addition: Start the motor of the brine addition module, and the pump head pumps the sodium chloride aqueous solution in the brine tank into the pretreated water at a flow rate of 2L / min to form the electrolyte to be electrolyzed, which enters the electrolysis module after being evenly mixed.

[0050] Electrolysis: After the electrolyte enters the electrolysis module, electrolysis is carried out under the action of a DC voltage of 30V. By controlling the redox potential to be greater than 1100mV (actually controlled at around 1200mV), the current density is adjusted to 0.5A / dm 2 The electrolysis time is 30 min, the electrolyte concentration is maintained at about 2 mol / L (taking into account the addition of brine and the consumption during the electrolysis process), and acidic functional water and alkaline functional water are produced in the anode chamber and cathode chamber, respectively.

[0051] Collection and storage: The acidic functional water produced in the anode chamber is introduced into a water storage tank of the storage module through the anode outlet pipe for storage, and the alkaline functional water produced in the cathode chamber is introduced into another water storage tank through the cathode outlet pipe for storage for subsequent use.

[0052] Control and monitoring: The potential monitor of the control module monitors the redox potential in the electrolytic cell in real time. The liquid level sensor monitors the liquid level of the two water storage tanks in the storage module. The automatic sensor and control system automatically adjust the voltage, current and water inlet and outlet of the water storage tank during the electrolysis process according to the monitoring results to ensure the stability and safety of the preparation process.

[0053] Application in washing cage

[0054] The prepared alkaline functional water is directly introduced into the main washing chamber of the washing cage to replace part of the traditional alkaline detergent, and the acidic functional water is introduced into the neutralization chamber of the washing cage. By optimizing the addition ratio and timing of alkaline functional water and acidic functional water in different chambers of the washing cage, the amount of alkaline functional water added is adjusted according to the weight and degree of dirtiness of the clothes. Generally, 2-3L alkaline functional water is added for every 10kg of clothes, and 1-2L acidic functional water is added for every 10kg of clothes. The washing process is precisely controlled and optimized, and the washing temperature is reduced from the traditional 85℃ to 50-60℃, achieving the purpose of energy saving and consumption reduction and improving washing efficiency.

[0055] Antimicrobial testing process

[0056] Bacterial liquid preparation

[0057] Staphylococcus aureus, Escherichia coli and Candida albicans were cultured separately to reach the logarithmic growth phase. Then the bacterial solution was diluted to an appropriate concentration with sterile saline. Generally, the inoculation concentration of Staphylococcus aureus and Escherichia coli was 1.0×10 5 -2.0×10 5 CFU / mL, the inoculation concentration of Candida albicans was 1.0×10 4 -2.0×10 4 CFU / mL.

[0058] Test sample preparation

[0059] Take the prepared potential functional water, acidic functional water and alkaline functional water samples respectively, take 50 mL of each sample and put them into a sterile conical flask.

[0060] Antimicrobial testing

[0061] The antibacterial test was carried out by oscillation method. The prepared bacterial solution was added to the conical flasks containing acidic functional water and alkaline functional water samples, and the amount of bacterial solution added was 10 mL. Then the conical flask was placed in a constant temperature oscillator and cultured at 37°C for 24 hours.

[0062] Colony count

[0063] After the shaking culture is completed, the colonies in the conical flask are counted using the plate counting method. The antibacterial rates of acidic functional water and alkaline functional water against different bacteria are calculated respectively. The antibacterial rate calculation formula is:

[0064] Bacterial inhibition rate = (control colony count - test colony count) / control colony count × 100%, where the control colony count is the colony count of the bacterial solution without adding functional water after culturing under the same conditions. The antibacterial test results are shown in Table 1 below.

[0065] Table 1 Antibacterial data table

[0066]

[0067] As can be seen from Table 1, acidic functional water has different degrees of antibacterial effect on the three test bacteria, among which the antibacterial effect on Staphylococcus aureus is the most significant. Alkaline functional water has a certain antibacterial effect on Staphylococcus aureus and Escherichia coli, but has no antibacterial effect on Candida albicans.

[0068] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for preparing potential functional water, characterized in that: The following steps are involved: a) Pretreatment: introducing tap water into the pretreatment module, controlling the water inlet volume through the water inlet valve, monitoring the water pressure through the water pressure relay, and removing insoluble substances and colored and odorous impurities in the water through the filter, wherein the filter contains at least one of activated carbon, glass fiber, polyester, and PP cotton; b) Brine addition: a concentrated aqueous solution containing sodium chloride or potassium chloride is pumped from a brine tank into the pretreated water through a motor and a pump head to form an electrolyte to be electrolyzed; c) Electrolysis: introducing the electrolyte to be electrolyzed into the electrolysis module, and performing electrolysis under the action of a DC voltage. The electrolytic cell is two identical intermittent electrolytic cells connected in parallel, and an anode electrode plate, a cathode electrode plate and a partition are provided in the electrolytic cell. The partition divides the electrolytic cell into an anode chamber and a cathode chamber. An anode water outlet pipe is provided in the anode chamber, and a cathode water outlet pipe is provided in the cathode chamber. By controlling the redox potential to be greater than 1100mV, water with different functions is produced in the anode chamber and the cathode chamber respectively; d) Collection and storage: The acidic functional water produced in the anode chamber is introduced into the storage module through the anode outlet pipe for storage, and the alkaline functional water produced in the cathode chamber is introduced out through the cathode outlet pipe for subsequent use; e) Control and monitoring: The redox potential in the electrolytic cell and the liquid level in the storage module are monitored by a control module, which includes a potential monitor and a liquid level sensor to ensure the stability and safety of the preparation process.

2. The method for preparing potential functional water according to claim 1, characterized in that: In the electrolysis step c), the electrolysis process is optimized by adjusting parameters such as current density, electrolysis time and electrolyte concentration to improve the preparation efficiency and quality of functional water.

3. The method for preparing potential functional water according to claim 2, characterized in that: The method also includes a step of post-treating the collected acidic functional water and alkaline functional water to further remove impurities, adjust the pH value or enhance functional properties.

4. Application of the potential functional water according to claim 3 in a washing device, characterized in that: The prepared alkaline functional water is directly introduced into the main washing chamber of the washing equipment to replace or partially replace the traditional alkaline detergent, while reducing the washing temperature, thereby achieving the purpose of energy saving and consumption reduction and improving washing efficiency.

5. The use of the potential functional water in a washing device according to claim 4, characterized in that: The prepared acidic functional water is introduced into the neutralization bin of the washing equipment to neutralize the alkaline wastewater generated during the washing process, thereby achieving recycling and zero discharge of the wastewater.

6. The use of the potential functional water in a washing device according to claim 5, characterized in that: The washing equipment is a washing cage, which achieves precise control and optimization of the washing process and improves washing quality and efficiency by optimizing the proportion and timing of adding alkaline functional water and acidic functional water in different positions of the washing cage.

7. A preparation system comprising the potential functional water according to claim 3, characterized in that: The preparation system includes a pretreatment module, a brine addition module, an electrolysis module, a storage module and a control module. The modules are connected by pipelines and valves to form a complete preparation process.

8. The system for preparing potential functional water according to claim 7, characterized in that: The electrolysis module also includes an anode water outlet pipe, a cathode water outlet pipe and a stop valve, which are used to collect and lead out the functional water generated in the anode chamber and the cathode chamber respectively.

9. The system for preparing potential functional water according to claim 8, characterized in that: The control module also includes automatic sensors and control systems for real-time monitoring and adjusting various parameters in the preparation process to ensure the stability and safety of the preparation process.

10. A method for using the system for preparing electric potential functional water according to claim 9 in a washing device, characterized in that: The alkaline functional water and acidic functional water prepared by the preparation system are respectively introduced into the main washing chamber and neutralization chamber of the washing equipment. By optimizing the addition ratio and timing, precise control and optimization of the washing process can be achieved.

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