CN103435131B - A kind of device producing acidic electrolytic water - Google Patents
A kind of device producing acidic electrolytic water Download PDFInfo
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- CN103435131B CN103435131B CN201310350759.8A CN201310350759A CN103435131B CN 103435131 B CN103435131 B CN 103435131B CN 201310350759 A CN201310350759 A CN 201310350759A CN 103435131 B CN103435131 B CN 103435131B
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Abstract
The invention provides a kind of method and the device of producing acidic electrolytic water, hold the mixed aqueous solution of acetic acid and sodium-chlor in a reservoir, the electrode of a pair loading volts DS is set, mixed aqueous solution is ionized; Concrete, sodium-chlor ionization produces Na
+and Cl
-, acetic acid ionization produce CH3COO
-and H
+, Cl
-and H
+in conjunction with generation HCl; Because acetic acid can carry out strong dehydrogenation reaction, make H in mixed aqueous solution under electric field action
+concentration greatly increase, thus accelerate Cl
-and H
+combination, mixed aqueous solution electrolysis the is obtained acidic electrolysis aqueous solution that effective chlorine density is 20 ~ 200ppm.Organic acid is used in the producing of strong acidic electrolyzed water solution by the present invention worldwide initiatively; Starting material very easily obtain, with low cost, making method is simple, safe and reliable, and apparatus structure is simple, easy to use, is beneficial to and uses on a large scale and promote.
Description
Technical field
The present invention relates to technical field water electrolysis being produced to function water, specifically a kind of method and apparatus producing acidic electrolytic water.
Background technology
By producing to the electrolysis of water salt adding the acidic electrolytic water obtained, there is broad-spectrum sterilization, rapidly, easy to use, cost is low, to advantages such as human non-toxic's side effect, corrodibility are little, be a kind of novel environment-friendlydisinfectant disinfectant.
Acidic electrolytic water complies with its difference that is acid and preparation method, be divided into again strong acidic electrolyzed water (below pH2.7), slightly acidic brine electrolysis (pH2.7 ~ 5), subacidity brine electrolysis (pH5 ~ 6.5), electrolysis time sub-water (pH>7.5), etc.Wherein, the physical and chemical index of strong acidic electrolyzed water is: pH is between 2.0 ~ 3.5; ORP value reaches 1000 ~ 1200mv; Effective chlorine density is 20 ~ 200ppm.The high ORP value of strong oxidized water and low pH, beyond the scope of microorganism.When ORP value reaches 600mv, the bacterium of 80% can not survive; When ORP value reaches more than 800mv, all bacteriums are all dead in several minutes; When ORP value reaches more than 900mv, then membranolysis even reaches the degree of bacteria breaking.And the complicated chemical factor be rich in acidic electrolytic water, comprising: hypochlorous acid, hydrogen peroxide and OH hydroxyl etc., then form the chemical factor of potent kill bacteria.Another advantage of acidic electrolytic water is then non-residual toxicity.The Study and appliance document of domestic and international magnanimity proves, acidic electrolytic water, in health care, food-processing, agricultural, livestock industry, family and even natural disaster emergence period and the virus public place disinfection of wreaking havoc the phase etc. occasion, has and applies extremely widely.
Produce the basic skills of acidic electrolytic water at present, be divided into and have barrier film electrolysis (two Xing Huosan room, Room types) and non-isolating film electrolysis (a Room type) mode.
The subject matter having barrier film salt adding electrolysis mode to exist is: apparatus structure is complicated, high to the requirement of electrode and barrier film, high to the pre-processing requirements of water, and energy consumption is large, and must produce out acid and alkalescence two kinds of water, the expensive cost performance of device is not high etc. simultaneously.
In order to overcome the deficiency having film Electrowinning acidic electrolytic water, publicity has " salt+hydrochloric acid " without film electrolysis patents technology (such as: China Patent No. 200410021043), but hydrochloric acid is as the hazardous chemical of restrict sales, and general family is difficult to buy.
In addition, there is the shortcoming of not easily preserving in the less stable of acidic electrolytic water.Along with the time director and with the contacting of light and air, the sterilization effect of acidic electrolytic water can decline thereupon.Therefore, the best now-making-now-using of acidic electrolytic water, and the method preparing acidic electrolytic water is on the market very complicated, installation cost is high, is not easy in the on-the-spot now-making-now-using needing to use acidic electrolytic water.
The variety of problems that existing acidic electrolytic water preparation method and device exist, significantly limit popularizing of this excellent sterilized product of acidic electrolytic water.The drinking water safety of depending on for existence people, air-safety, food safe environment lose guarantee day by day, nature calamity constantly, virus unscrupulous today of wreaking havoc, develop a kind of starting material be seen everywhere in daily life be easy to get, every household can the method and apparatus of low cost now-making-now-using disinfection water, has extremely important realistic meaning.
Summary of the invention
The object of the invention is to: a kind of method and the device of producing acidic electrolytic water are provided, its starting material be seen everywhere in daily life be easy to get, every household can now-making-now-using, low cost obtains disinfection water.
The technical solution adopted in the present invention is:
Produce a method for acidic electrolytic water, hold the mixed aqueous solution of acetic acid and sodium-chlor in a reservoir, the electrode of a pair loading volts DS is set, mixed aqueous solution is ionized; Concrete, sodium-chlor ionization produces Na
+and Cl
-, acetic acid ionization produce CH3COO
-and H
+, Cl
-and H
+in conjunction with generation HCl; Because acetic acid can carry out strong dehydrogenation reaction, make H in mixed aqueous solution under electric field action
+concentration greatly increase, thus accelerate Cl
-and H
+combination, mixed aqueous solution electrolysis the is obtained acidic electrolysis aqueous solution that effective chlorine density is 20 ~ 200 ppm.
In described mixed aqueous solution, the concentration of sodium-chlor is 0.3 ~ 15g/L, and the concentration of acetic acid is 0.1 ~ 7 g/L.
The pH value of the described acidic electrolysis aqueous solution between 2.0 ~ 3.5, redox potential is between 1000 ~ 1200mv.
Produce a device for acidic electrolytic water, comprise container, be provided with pair of electrodes in described container and the anode of electrode and negative electrode be connected respectively the positive and negative end of power supply; Described power supply is direct supply, holds the mixed aqueous solution of acetic acid and sodium-chlor in container.
As the improvement to said apparatus, described negative electrode adopts absorbent charcoal material to obtain.
Improve as to the first of said apparatus, described container is that electro-conductive material obtains, as one end of electrode, the other end of electrode is arranged on internal tank.
Improve as to the second of said apparatus, portion's vertical direction arranges one piece of barrier film in the above-described container, container is divided into 2 chambers and arranges anode and negative electrode respectively in 2 chambers.
Further improvement, all holds the mixed aqueous solution of acetic acid and sodium-chlor in described anode chamber and cathode chamber.
Or, be close to barrier film both sides at described anode and negative electrode and arrange and uniform perforate on anode and negative electrode, in anode chamber and cathode chamber, select a chamber to hold the mixed aqueous solution of acetic acid and sodium-chlor, another chamber before electrolytic reaction starts for empty.
Further improve, pressurizing device is provided with in the described chamber holding mixed aqueous solution, mixed aqueous solution is from this chamber under the effect of pressurizing device, and unidirectional electrode, barrier film and the other end electrode passed through corresponding to this chamber, finally enters another chamber successively.
The beneficial effect that the present invention produces:
The present invention is applicant on the basis of further investigation and long-term test results, a kind of method and the device producing acidic electrolytic water worked out.Technological innovation of the present invention is: the ingenious carboxylic-acid organic acid that utilizes ionizes dehydrogenation reaction, strengthens and improves the electrolytic reaction process producing sour water, and then electrolytic efficiency is improved; Novelty of the present invention is: in world wide initiatively, is used for by organic acid in the producing of the acidic electrolysis aqueous solution.The most remarkable technical progress of the present invention is: salt (sodium-chlor) and these two kinds of starting material of vinegar (acetic acid) belong to the requisite in daily life, be seen everywhere, very easily obtain, therefore, the inventive method is adopted extremely low cost, extremely easily step can to produce the acidic electrolysis aqueous solution.Method of the present invention is simple, safe and reliable, and apparatus structure is simple, easy to use, is beneficial to and uses on a large scale and promote.
The sterilized water (the acidic electrolysis aqueous solution) adopting present method to produce is when applicant maintains secrecy to its preparation method and device, use in the following areas in recent years has good effect, as: in the bactericidal assay of Taishan, Guangdong 800 mu of Hai Xiayangzhichang, the blue-green algae inactivation test in Taihu Lake, Wuxi and treatment beriberi tinea unguium etc.Above-mentioned successfully use shows, adopt the acidic electrolytic water that the inventive method and device are produced, not only there is barrier film electrolysis index (ORP, pH, available chlorine) identical with tradition, and sterilization effect is remarkable, water producing cost then has one of percentage of barrier film electrolyzer lower than commercially available, and preparation method is extremely simple, convenient.
Accompanying drawing explanation
Fig. 1 is the structural representation that the present invention produces the first embodiment of device of acidic electrolytic water;
Fig. 2 is the structural representation that the present invention produces device the second embodiment of acidic electrolytic water;
Fig. 3 is the structural representation that the present invention produces the third embodiment of device of acidic electrolytic water;
Fig. 4 is the structural representation that the present invention produces device the 4th kind of embodiment of acidic electrolytic water;
Fig. 5 is the structural representation that the present invention produces device the 5th kind of embodiment of acidic electrolytic water;
Number in the figure represents: 1-container, 2-anode, 3-negative electrode, 4-power supply, 5-barrier film, the mixed aqueous solution of a-acetic acid and sodium-chlor, the b-acidic electrolysis aqueous solution, c-aqueous alkaline electrolyte.
Embodiment
The crucial part producing acidic electrolytic water method of the present invention is: the acetic acid (acetic acid) adding suitable proportion in sodium-chlor (salt) aqueous solution, and carries out electrolysis to both mixed aqueous solution applying volts DSs.Concrete: the mixed aqueous solution a holding acetic acid and sodium-chlor in the container 1, arranges the electrode of a pair loading volts DS, ionizes the mixed aqueous solution a of acetic acid and sodium-chlor.In this embodiment, in the mixed aqueous solution a of acetic acid and sodium-chlor: the concentration of sodium chloride nacl is 0.3 ~ 15g/L, the concentration of acetic acid CH3COOH is 0.1 ~ 7 g/L.Concrete ionization process is as described below:
Sodium chloride nacl ionization in the mixed aqueous solution a of acetic acid and sodium-chlor produces sodium ion Na+ and chlorion Cl-, acetic acid CH3COOH ionization and produces acetate ion CH3COO-and hydrogen ion H+, afterwards, the chlorion Cl-ionized out and hydrogen ion H+ combines and produces salt acid molecule HCl.Because acetic acid CH3COOH can carry out strong dehydrogenation reaction, make the concentration of hydrogen ion H+ in the mixed aqueous solution a of acetic acid and sodium-chlor greatly increase under electric field action, thus accelerate the combination of chlorion Cl-and hydrogen ion H+, mixed aqueous solution electrolysis is obtained acidic electrolysis aqueous solution b that effective chlorine density is 20 ~ 200 ppm.Certainly, when ionizing the mixed aqueous solution a of acetic acid and sodium-chlor, other auxiliary products such as sodium-acetate CH3COONa, hypochlorous acid HClO, clorox NaClO, sodium hydroxide NaOH, hydrogen H2, chlorine Cl2 also can be produced.But, because the ionization dehydrogenation reaction speed of acetic acid CH3COOH is faster than the ionization rate of sodium-chlor, therefore, the hydrogen ion H+ produced continually, hydrogen ion H+ is constantly combined with chlorion Cl-, causes the hydrogen ion concentration (i.e. pH value) of the acidic electrolysis aqueous solution b finally obtained between 2.0 ~ 3.5, redox potential ORP is between 1000 ~ 1200mv.
From the principles of chemistry, carboxylic-acid organic acid itself under field conditions (factors), has ionization dehydrogenation reaction to occur, thus shows certain acidity.After obtaining certain electric field energy, the desorption process of hydrogen can be strengthened further.Molecular acid formula is C2H4O2 (CH3COOH), because acetic acid is the main component of vinegar, also known as acetic acid, itself has sterilization effect.Saturated carboxylic acid containing two carbon atoms in molecular acid, be the important containing oxygen derivative of hydrocarbon, functional group is carboxyl, and the carboxyl hydrogen atom of acetic acid partial ionization can become hydrogen ion (or proton) and discharge.In water, add acetic acid (there is the material of carboxyl structure), contribute to the increase of hydrogen ion H+ concentration in water, i.e. the reduction of pH value.
For in a Room type electrolyzer (container 1) of non-isolating film, electrolysis is carried out to sodium chloride nacl (salt) aqueous solution, often can only obtain partial neutral or faint alkalescence, redox potential ORP at the electrolysis time sub-water of 600 ~ 800mv.But, if add acetic acid CH3COOH(acetic acid in the electrolyzer of sodium chloride nacl (salt) aqueous solution), and when electrolysis is carried out to both mixed aqueous solution a, due to the strengthening dehydrogenation reaction of acetic acid under electric field action, the concentration of hydrogen ion H+ in mixed electrolyzed water solution is increased greatly, thus cause that the pH value of mixed electrolyzed water solution declines fast and redox potential increases rapidly, finally obtain pH value between 2.0 ~ 3.5, redox potential ORP reaches 1000 ~ 1200mv, effective chlorine density is 20 ~ 200ppm acidic electrolysis aqueous solution b.Said process is equally applicable to use the electrolyzer (container 1) that the is provided with barrier film mixed aqueous solution a to acetic acid and sodium-chlor to carry out the situation of electrolysis, and when adding acetic acid, can greatly reduce the watt consumption producing acidic electrolysis aqueous solution b, or shorten preparation time.
Present invention applicant needs ben, and electrochemical water treatment technology itself is an experimental extremely strong science.For the situation of organic acid soln electrolysis, especially to the electrolysis situation of the mixed aqueous solution a of acetic acid and sodium-chlor, although real reaction process and produce the mechanism of strong oxidized water may be very complicated, but the actual tests of present invention applicant through the several years proves, technique scheme produces the data of strong oxidized water, be then truly stablize and can revision test verify, sterilization effect is also significantly effective.
As shown in Figure 1, be the present invention produce the device of acidic electrolytic water the first embodiment, be also the basic structure of this device, comprise container 1, be provided with pair of electrodes in this container 1 and the anode 2 of electrode and negative electrode 3 be connected respectively the positive and negative end of power supply 4.This power supply 4 is direct supplys, holds the mixed aqueous solution a of acetic acid and sodium-chlor in container 1.Concrete: in non-conductive water container 1, be provided with a pair electrolysis electrode: anode 2 and negative electrode 3, salt and the acetic acid (vinegar) of suitable proportion is added in water in water container 1, there is provided volts DS to carry out electrolysis by DC electrolysis power supply 4 to its mixed aqueous solution, produce acidic electrolytic water.
Research finds, the low ph value of acidic electrolysis aqueous solution b causes primarily of oxygen evolution reaction, and high redox potential ORP mainly to react and oxygen evolution reaction causes jointly by analysing chlorine.Therefore, for above-mentioned another improvement of producing acidic electrolytic water device: the negative electrode 3 of electrode can be made up of gac class material, to suppress the liberation of hydrogen process on negative electrode 3, strengthen the oxygen evolution reaction of anode 2 and analyse chlorine reaction.
Further, as shown in Figure 2, be the second embodiment that the present invention produces the device of acidic electrolytic water, container 1 can adopt electro-conductive material to obtain, as one end of electrode, and it is inner that the other end of electrode is arranged on container 1.Namely container 1 is anode 2 or negative electrode 3, and remaining negative electrode 3 or anode 2 are then arranged on the inside of container 1.This is to the improvement of producing acidic electrolytic water device technique scheme shown in Fig. 1, its water container 1 can with one of electrolysis electrode substitute (negative electrode or anode).
Further, can arrange one piece of barrier film 5 by portion's vertical direction in the container 1, this barrier film 5 is commercially available electrolytic separator 5.Container 1 is divided into 2 independently electrolysis chambers arrange anode 2 and negative electrode 3 in 2 chambers respectively by barrier film 5.Concrete: the chamber being provided with anode 2 is referred to as anode chamber 1-1, and the chamber being provided with negative electrode 3 is referred to as cathode chamber 1-2.
As shown in Figure 3, be the third embodiment that the present invention produces the device of acidic electrolytic water, the mixed aqueous solution a of acetic acid and sodium-chlor is all held in anode chamber 1-1 and cathode chamber 1-2, after carrying out ionization reaction, acidic electrolysis aqueous solution b can be obtained in anode chamber 1-1, in cathode chamber 1-2, aqueous alkaline electrolyte c can be obtained.This device is adapted at using in family or restaurant, hotel, is specially adapted to for the cleaning of fruits and vegetables and the washing of tableware.The aqueous alkaline electrolyte c obtained in cathode chamber 1-2 may be used for degrade agricultural chemicals residual in fruits and vegetables and heavy metal, and the acidic electrolysis aqueous solution b obtained in anode chamber 1-1 may be used for fruits and vegetables tableware etc. clean after sterilization and disinfection process.
The present invention being produced to the further change of acidic electrolytic water device, is that both sides anode 2 and negative electrode 3 being close to barrier film 5 are arranged and uniform perforate on anode 2 and negative electrode 3.In anode chamber 1-1 and cathode chamber 1-2, select a chamber to hold the mixed aqueous solution a of acetic acid and sodium-chlor, another chamber is sky before electrolytic reaction starts.This is the further improvement to the acidic electrolytic water device with barrier film 5, comprise: barrier film 5 and negative electrode 3, distance between barrier film 5 and anode 2 are all reduced into zero, and on negative electrode 3 and anode 2, open several permeable (gas) holes, make the device producing acidic electrolytic water develop into zero spacing barrier film electrolysis water structure, be specifically divided into intermittent type water (Fig. 4) and water processed (Fig. 5) two kinds of structures continuously.
As shown in Figure 4, be the 4th kind of embodiment that the present invention produces the device of acidic electrolytic water, in the anode chamber 1-1 of water container 1, only inject the mixed aqueous solution a of acetic acid and sodium-chlor, and provide volts DS to carry out electrolysis to this solution by power supply 4.Finally obtain acidic electrolysis aqueous solution b at anode chamber 1-1, only have the aqueous alkaline electrolyte c of minute quantity successively by anode 2, barrier film 5 and negative electrode 3, leak into cathode chamber 1-2.Such main purpose is: reduce and do not produce aqueous alkaline electrolyte c even, only produce required acidic electrolysis aqueous solution b.
In like manner, also the mixed aqueous solution a of acetic acid and sodium-chlor can be injected in the cathode chamber 1-2 of water container 1, and provide volts DS to carry out electrolysis to this solution by power supply 4, aqueous alkaline electrolyte c is finally obtained at cathode chamber 1-2, only there is the acidic electrolysis aqueous solution b of minute quantity successively by negative electrode 3, barrier film 5 and anode 2, leak into anode chamber 1-1.
Zero spacing barrier film of continuous water structure processed, the constitutional features of device producing acidic electrolytic water are: in the chamber of mixed aqueous solution a holding acetic acid and sodium-chlor, be provided with pressurizing device, the mixed aqueous solution a of acetic acid and sodium-chlor under the effect of pressurizing device from this chamber, unidirectional by electrode, barrier film 5 and the other end electrode corresponding to this chamber successively, finally enter another chamber.Concrete as shown in Figure 5, be the 5th kind of embodiment that the present invention produces the device of acidic electrolytic water, cathode chamber 1-2, for holding the mixed aqueous solution a of acetic acid and sodium-chlor, is therefore provided with pressurizing device on cathode chamber 1-2.The mixed aqueous solution a of acetic acid and sodium-chlor enters the cathode chamber 1-2 of water container 1 seal and pressure bearing under the pressure effect of pressurizing device, and making it by the permeable hole on negative electrode 3 and anode 2, the direction along negative electrode 3 → barrier film 5 → anode 2 flow to anode chamber 1-1.Meanwhile, continuous electrolysis under the effect of the volts DS that the mixed aqueous solution a of acetic acid and sodium-chlor provides at electrolysis power 4, obtains required acidic electrolysis aqueous solution b in the anode chamber 1-1 of water container 1.
Below, we use two specific embodiments, carry out the simple and easy method of the acid sterilized water of Electrowinning and device is specifically described to based on the above-mentioned carboxylic-acid organic acid that adds in common salt aqueous solution:
Embodiment one one kinds of non-isolating films produce the device of acidic electrolytic water
See Fig. 1, water container 1 is the rectangular plastic magazine of commercially available 2.9 liters; The inner side-wall on the long limit of water container 1 is fixed a pair shape is identical, be of a size of 80mm × 100mm × 0.8mm battery lead plate (i.e. negative electrode 3 and anode 2) respectively.Described battery lead plate is the noble electrode of titanium base coating platinum group oxide, and the spacing between negative electrode 3 and anode 2 is 190mm.Electrolysis power 4 adopts commercially available 30V2A D.C. regulated power supply 4.
Water container 1 is injected for about 2.7 liters, tap water in city, add a small amount of salt (sodium-chlor), be about 2 ~ 10 g/L with the concentration adjusting to sodium-chlor, and Xiang Shuizhong adds the commercially available light-coloured vinegar essence of about 5 ~ 60 milliliters, makes the acetic acid concentration contained by it be about 0.6 ~ 1 g/L.Connect D.C. regulated power supply 4, export 12V constant voltage and power continuously to electrode, Faradaic current is 0.5 ~ 0.3A about.Water processed power-off after 50 minutes, actual measurement to produce the parameter of acidic electrolytic water solution b as follows: pH value is 2.6, redox potential ORP is 1080mv, effective chlorine density is 45ppm, and this acidic electrolysis aqueous solution b is strong acidic electrolyzed water solution b.
Embodiment 2 a kind of zero spacing barrier film Electrowinning sour water device
See Fig. 4, water container 1 is the rectangular plastic magazine of commercially available 2.9 liters, is divided into cathode chamber 1-2 and anode chamber 1-1 these two separate, fluid-tight regions along its length at middle part barrier film 5.Negative electrode 3 and anode 2 are close to both sides, the gapless setting of barrier film 5 respectively, and negative electrode 3 and anode 2 are the noble electrode plate of identical titanium base coating platinum group oxide, be of a size of 80mm × 100mm × 0.8mm, each uniform hole, garden having 40 φ 5 on negative electrode 3 and anode 2.Electrolysis power 4 adopts commercially available 30V2A D.C. regulated power supply 4.
City is injected for tap water, the water yield about 1.2 liters in the anode chamber 1-1 of water container 1.Add a small amount of salt, concentration is 7g/L, and Xiang Shuizhong adds commercially available light-coloured vinegar essence, makes the acetic acid concentration contained by it be about 1 ~ 3 g/L.Connect D.C. regulated power supply 4, export 7.5V constant voltage and power continuously to electrode, Faradaic current is 0.4 ~ 0.25A about.Water processed power-off after 35 minutes, actual measurement to produce the parameter of acidic electrolytic water solution b as follows: pH value is 2.3, redox potential ORP is 1250mv, effective chlorine density is 70ppm, and this acidic electrolysis aqueous solution b is strong acidic electrolyzed water solution b.
The concrete technical scheme be not limited to described in above-described embodiment of the present invention, all employings are equal to replaces the protection domain that the technical scheme formed is application claims.
Claims (2)
1. produce a device for acidic electrolytic water, it is characterized in that: comprise container, be provided with pair of electrodes in described container and the anode of electrode and negative electrode be connected respectively the positive and negative end of power supply; Described power supply is direct supply, holds the mixed aqueous solution of acetic acid and sodium-chlor in container; In the middle part of described container, vertical direction arranges one piece of barrier film, container is divided into 2 chambers and arranges anode and negative electrode respectively in 2 chambers; Described anode and negative electrode are close to barrier film both sides and are arranged and uniform perforate on anode and negative electrode, select a chamber to hold the mixed aqueous solution of acetic acid and sodium-chlor in anode chamber and cathode chamber, another chamber before electrolytic reaction starts for empty.
2. the device producing acidic electrolytic water according to claim 1, it is characterized in that: described in hold mixed aqueous solution chamber in be provided with pressurizing device, mixed aqueous solution under the effect of pressurizing device from this chamber, unidirectional by electrode, barrier film and the other end electrode corresponding to this chamber successively, finally enter another chamber.
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| CN105940889A (en) * | 2016-04-22 | 2016-09-21 | 北京建元天地环保科技有限公司 | Method for planting potato by functional water |
| CN105941029A (en) * | 2016-04-26 | 2016-09-21 | 北京建元天地环保科技有限公司 | Method for carrying out paddy rice planting with functional water |
| CN105923711B (en) * | 2016-04-27 | 2019-04-02 | 山东富莱环保科技有限公司 | A kind of functional water and its functional water dimension stereo agriculture planting method |
| CN113929186A (en) * | 2021-10-08 | 2022-01-14 | 济南飞蓝水处理设备有限公司 | Method and device for adjusting pH value of acidic electrolyzed water |
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