CN101698524A - Method for purifying quality of household drinking water by adopting lower temperature plasma technology and device thereof - Google Patents
Method for purifying quality of household drinking water by adopting lower temperature plasma technology and device thereof Download PDFInfo
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- CN101698524A CN101698524A CN200910185297A CN200910185297A CN101698524A CN 101698524 A CN101698524 A CN 101698524A CN 200910185297 A CN200910185297 A CN 200910185297A CN 200910185297 A CN200910185297 A CN 200910185297A CN 101698524 A CN101698524 A CN 101698524A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
Abstract
The invention discloses a method for purifying quality of household drinking water by adopting lower temperature plasma technology and device thereof, which is characterized in that water is electrolyzed to produce hydrogen and oxygen; the hydrogen and oxygen are taken as electro-discharging gases of reaction of plasma, the drinking water to be processed as well as the hydrogen and oxygen are subject to gas-liquid mixed electro-discharging; the water to be processed after finishing gas-liquid mixed electro-discharging is led into a water storage tank for storing until the sterilization by-products DBPs, bacteria and virus are eliminated and killed. The inventive method can effectively reduce DBPs in water, and has relatively thorough sterilization; fill-in of electrolyzed gases and decomposition of part of ozone during the reaction process both can increase oxygen content in the drinking water, being conducive to safety of drinking water.
Description
Technical field
The present invention relates to quality of household drinking water purifying method and device, a kind of method and device thereof that adopts the lower temperature plasma technology purifying quality of household drinking water of more specifically saying so.
Background technology
At present, adopt the mode of chlorination in the Drinking Water in China decontamination process mostly.According to national water hygiene standard, pipe network tip water available chlorine must could ensure water hygiene safety greater than 0.05mg/L.And to reach this effective chlorine density, the waterworks chlorine-throwed quantity generally is greater than 2mg/L.But, carrying out tap water prechlorination and when sterilization, chlorine easily with water in generation oxidizing reactions such as some organism such as humic acid, electrophilic substitution reaction takes place simultaneously, produce a large amount of disinfection byproduct (DBP) DBPs.At present, detecting the highest DBPs of content in tap water is THMs and HAAs two big classes, and the content of THMs and HAAs accounts for 46% and 42% of DBPs respectively in the liquid chlorine disinfection way; Chloramines disinfection is respectively 24% and 54%.As seen, the main by product of chlorination is THMs and HAAs, and both account for more than 80% of whole DBPs at the content sum.Chlorination is in order to reduce the danger of tap water microbial contamination, but has improved the danger of the chemical pollution of tap water simultaneously.Massive epidemiology investigation proof, the water of long-term drinking chlorination can increase the cancered possibility of people.
After tap water is handled through chlorination,, in the water outlet of waterworks, still have the part survival, mainly contain poliovirus, Coxsackie virus, rotavirus, hepatitis A virus etc. though wherein most of virus can be killed.Along with the variation of water environment pollution situation, original virus also may change in the water body, and new virus occurs.
Plasma body is the 4th kind of state that material exists, and it is made up of ionized conducting gas, comprising six kinds of typical particles, the i.e. atom of the atom of electronics, positive ion, negative ion, excited state or molecule, ground state or molecule and photon.The method of the most frequently used artificial generation plasma body is an electrion, forms a large amount of high-energy electrons in the electrion process, and when having water molecules to exist, high-energy electron is at the utmost point in the short period of time (10
-7S) form a large amount of free radicals and ozone with the water reaction, the free radical kind is a lot of in the electrion plasma body, mainly contains hydroxyl radical free radical OH, hydrated electron e
Aq -, O, HO
2Deng, they all have strong oxidizing property.
O
2+·O→O
3
Ozone has very strong water-soluble, and its solubleness in water is about 13 times of oxygen, and the water-soluble back of ozone series reaction takes place generates the extremely strong OH of oxidation capacity.
O
3→O
2+·O
·O+H
++e→·OH
O
3+H
2O
2→·OH+O
2+HO
2·
O
3+HO
2·→·OH+O
2+O
2 -
Owing to the bombardment effect of high-energy electron, can in the aqueous solution, generate H in the electrion process
2O
2, and under the effect of the UV that electrion produces, further be decomposed into the extremely strong OH of oxidation capacity.
O
3+H
2O+hv→H
2O
2+O
2
H
2O
2+hv→2·OH
Utilize electrion to produce plasma body, be applied to fields such as electrostatic precipitation, sewage disposal, purifying air, but the purification of water quality that is applied to household drinking water is not seen relevant report.
Summary of the invention
The present invention is for avoiding above-mentioned existing in prior technology deficiency, a kind of method and device that adopts the lower temperature plasma technology purifying quality of household drinking water being provided, to reduce DBPs and the thorough sterilization and disinfection of energy in the tap water.
Technical solution problem of the present invention adopts following technical scheme:
It is to carry out according to the following procedure that the present invention adopts the characteristics of the method for lower temperature plasma technology purifying quality of household drinking water:
A, produce hydrogen and oxygen by brine electrolysis;
B, with the described hydrogen of step a and oxygen discharge gas as plasma reaction, pending tap water and described hydrogen and oxygen are carried out gas-liquid mixed discharge jointly;
C, introduce in the water storing tank and store finishing processed water after the gas-liquid mixed discharge among the step b, the disinfection byproduct (DBP) DBPs in water, bacterium and virus are eliminated and kill.
The present invention adopts the characteristics of the method for lower temperature plasma technology purifying quality of household drinking water also to be:
Described processed water is mixed with pending tap water, introduce water storing tank jointly and store.
With the unnecessary O in the described water storing tank
3Reflux to pending tap water ingress.
The present invention adopts the device of lower temperature plasma technology purifying quality of household drinking water, and its constructional feature is to have:
One electrolyzer, brine electrolysis is to obtain hydrogen and oxygen;
One plasma reactor with the hydrogen that produces in the described electrolyzer and the oxygen discharge gas as plasma reaction, and inserts pending tap water by under meter, finishes gas-liquid mixed discharge;
One water storing tank is finished the processed water of gas-liquid mixed discharge and is introduced water storing tank in described plasma reactor, and seasoning in water storing tank.
The present invention adopts the apparatus features of lower temperature plasma technology purifying quality of household drinking water also to be:
The power that high-frequency and high-voltage power supply in the described plasma reactor is set is 20～100W, and power frequency is 5～35kHz.
The present invention adopts the constructional feature of the device of lower temperature plasma technology purifying quality of household drinking water also to be:
On the water outlet of plasma reactor Venturi tube is set, at described pending tap water water inlet the bypass water channel is set, the introducing water of described bypass water channel mixes the back with the water outlet of plasma reactor and introduces water storing tank in described Venturi tube.
Between described water storing tank and pending tap water water inlet, O is set
3Return line.
It is at the reactor bottom injecting gas that gas-liquid mixed discharge produces low-temperature plasma, make the gas uniform distribution in lower floor's solution, applying high-voltage pulse between corresponding pin electrode that is provided with and the plate electrode between lower floor's solution and the upper solution, under the high-strength electric field effect, produce plasma reaction.The gas-liquid mixed discharge method not only can produce O
3, H
2O
2, high-energy electron and ultraviolet radiation, but also can produce a large amount of active substance (OH, H, O etc.).These high-octane electronics (1-10eV) and the strong oxidizing property material DBPs in the water body that can effectively degrade plays the effect of thorough sterilization and disinfection simultaneously.
Compared with the prior art, beneficial effect of the present invention is embodied in:
1, the high-energy electron, the O that in its reaction process, produce of the inventive method
3, H
2O
2DBPs reaction with in non-selectivities such as active substance OH, H, O ground and the water effectively reduces the DBPs in the water;
2, the inventive method and device sterilization, disinfecting power are more thorough;
3, water electrolytic gas of the present invention charge into and reaction process in the decomposition of part ozone all can increase oxygen level in the tap water.
Description of drawings
Fig. 1 is a process flow diagram of the present invention.
Fig. 2 is a plasma reaction device synoptic diagram of the present invention.
Number in the figure: 1 plasma reactor, 2 bombs, 3 electrolyzers, 4 water storing tanks, 5 under meters, 6 Venturi tubes, 7 wash plates, 8 plate electrodes, 9 pin electrodes, 10 gas meters, 11 high-frequency and high-voltage power supplies.
Below pass through embodiment, and the invention will be further described in conjunction with the accompanying drawings:
Embodiment
Adopting the method for low-temperature plasma purifying quality of household drinking water in the present embodiment is to carry out according to the following procedure:
A, produce hydrogen and oxygen by brine electrolysis;
B, with the described hydrogen of step a and oxygen discharge gas as plasma reaction, pending tap water and described hydrogen and oxygen are carried out gas-liquid mixed discharge jointly;
C, introduce in the water storing tank and store finishing processed water after the gas-liquid mixed discharge among the step b, the disinfection byproduct (DBP) DBPs in water, bacterium and virus are eliminated and kill.
In concrete the enforcement, processed water can be mixed with pending tap water, processed water is diluted, introduce water storing tank more jointly and store.
Also can be with the unnecessary O in the water storing tank
3To the use that refluxes of pending tap water ingress.
Referring to Fig. 1, Fig. 2, adopt the device of low-temperature plasma purifying quality of household drinking water to have in the present embodiment:
One electrolyzer 3, brine electrolysis is to obtain hydrogen and oxygen;
One plasma reactor 1 with the hydrogen that produces in the electrolyzer 3 and the oxygen discharge gas as plasma reaction, and inserts pending tap water by under meter 5, finishes gas-liquid mixed discharge;
One water storing tank 4 is finished the processed water of gas-liquid mixed discharge and is introduced water storing tank 4 in plasma reactor 1, and seasoning in water storing tank 4.
In concrete the enforcement, the corresponding structure setting also comprises:
The power that high-frequency and high-voltage power supply 11 in the plasma reactor 1 is set is 20～100W, and power frequency is 5～35kHz, is preferably 15～25kHz, can be chosen as 20kHz;
Can between water storing tank 4 and pending tap water water inlet, O be set
3Return line is to unnecessary O in the storage not jar
3The use that refluxes can reduce effluxing of discharge gas, has effectively saved the working hour of electrolyzer 3.
Present embodiment is to adopt the mode of electrion to produce plasma body, utilizes the O in the plasma body
3, H
2O
2, OH, e
Aq -, O, HO
2Etc. the DBPs in the degradation water, can reach thorough sterilization, disinfectant purpose simultaneously;
In concrete the enforcement, electrion can adopt needle plate formula reactor, and needle plate formula reactor has the synthetic glass cylindrical drum that specification is diameter 5～10cm, high 10～25cm, and the selection of concrete specification can be provided with according to the maximum amount of water by under meter 5; The pin electrode 9 of needle plate formula reactor adopts the stainless steel needle electrode of hollow, and plate electrode 8 is that area is 4cm
2Square stainless steel plate, positive and negative electrode spacing 3～5mm, hydrogen and oxygen that electrolysis produces are collected in bomb 2, discharge gas is supplied with by bomb 2.
In the present embodiment, the CTP-2000K discharge power supply that adopts Nanjing Su Man Electronics Co., Ltd. to produce, the sparking voltage peak value that is used for gas-liquid mixed discharge that this power supply produced is 8000-12000V, AC sine wave mode, and maximum discharge current is 20-50mA, and power frequency is 2.5kHz～30kHz.
Technical process as shown in Figure 1, consider in the water tank 4 in the water residual ozone can within a short period of time natural decomposition, therefore, the plasma water that plasma reactor 1 be discharged is by diluting, the ratio of dilution can be controlled by under meter 5.
Tap water is divided into two portions through water inlet pipe, and wherein a part enters plasma reactor 1 through under meter 5, carries out plasma reaction, and water outlet enters Venturi tube 6 through nozzle; And another part directly enters Venturi tube 6, carries out thorough mixing with plasma water at the trunnion place of Venturi tube 6, together injects water tank 4;
Shown in Figure 1, in water tank 4, water inlet and water outlet branch are in both sides, and the wash plate 7 that suspended between the both sides is the small amount of ozone natural decomposition that is dissolved in the water in order to prolong the residence time of tap water at water tank 4, to make on the one hand; Be to enter water inlet pipe, the effect of DBPs and sterilization and disinfection in the enhancing degradation water on the other hand for the ozone that is not dissolved in water can be refluxed.
The working process of plasma reaction device as shown in Figure 2, in plasma reactor 1, inject an amount of tap water, water level should flood plate electrode 8, wrap up with insulation covering the outside of plasma reactor 1, and the difference of work period between electrolyzer 3 and the plasma reactor 1 can be effectively regulated in the setting of bomb 2.Discharge gas is successively through bomb 2, gas meter 10 and pin electrode 9, enters plasma reactor 1 with the form of discharge bubble.After the inflation several seconds, connect high-frequency and high-voltage power supply 11, form high-voltage electric field between plate electrode 8 and the pin electrode 9 this moment, and ionic discharge gas forms a large amount of high-energy electrons, and high-energy electron is at the utmost point in the short period of time (10
-7S) generate a large amount of OH, hydrated electron e with the water reaction
Aq -, O, HO
2Deng free radical and ozone.
Plasma reaction is carried out moments later, and the plasma water in the plasma reactor 1 is entered Venturi tube 6 by aqueduct, behind the dilution water thorough mixing, together enters water tank 4.
Claims (7)
1. method that adopts the lower temperature plasma technology purifying quality of household drinking water is characterized in that carrying out according to the following procedure:
A, produce hydrogen and oxygen by brine electrolysis;
B, with the described hydrogen of step a and oxygen discharge gas as plasma reaction, pending tap water and described hydrogen and oxygen are carried out gas-liquid mixed discharge jointly;
C, introduce in the water storing tank and store finishing processed water after the gas-liquid mixed discharge among the step b, the disinfection byproduct (DBP) DBPs in water, bacterium and virus are eliminated and kill.
2. the method for employing low-temperature plasma purifying quality of household drinking water according to claim 1 is characterized in that described processed water is mixed with pending tap water, introduces water storing tank jointly and stores.
3. method according to claim 1 and 2 is characterized in that unnecessary 03 in the described water storing tank refluxed to pending tap water ingress.
4. device that adopts the lower temperature plasma technology purifying quality of household drinking water is characterized in that having:
One electrolyzer (3), brine electrolysis is to obtain hydrogen and oxygen;
One plasma reactor (1) with the hydrogen that produces in the described electrolyzer (3) and the oxygen discharge gas as plasma reaction, and inserts pending tap water by under meter (5), finishes gas-liquid mixed discharge;
One water storing tank (4) is finished the processed water of gas-liquid mixed discharge and is introduced water storing tank (4) in described plasma reactor (1), and seasoning in water storing tank (4).
5. according to the device of the described employing lower temperature plasma technology of claim 4 purifying quality of household drinking water, the power that it is characterized in that being provided with the high-frequency and high-voltage power supply (11) in the described plasma reactor (1) is 20～100W, and power frequency is 5～35kHz.
6. according to the device of the described employing lower temperature plasma technology of claim 4 purifying quality of household drinking water, it is characterized in that on the water outlet of plasma reactor (1), being provided with Venturi tube (6), at described pending tap water water inlet the bypass water channel is set, the introducing water of described bypass water channel mixes the back with the water outlet of plasma reactor (1) and introduces water storing tank (4) in described Venturi tube (6).
7. the device of employing low-temperature plasma purifying quality of household drinking water according to claim 4 is characterized in that between described water storing tank and pending tap water water inlet O being set
3Return line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910185297A CN101698524A (en) | 2009-11-04 | 2009-11-04 | Method for purifying quality of household drinking water by adopting lower temperature plasma technology and device thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910185297A CN101698524A (en) | 2009-11-04 | 2009-11-04 | Method for purifying quality of household drinking water by adopting lower temperature plasma technology and device thereof |
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| Publication Number | Publication Date |
|---|---|
| CN101698524A true CN101698524A (en) | 2010-04-28 |
Family
ID=42146984
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|---|---|---|---|
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101862169A (en) * | 2010-06-18 | 2010-10-20 | 南京大学 | Electric rotating brush type oil stain table top cleaning device based on low-temperature plasma bodies |
| CN101928090A (en) * | 2010-08-05 | 2010-12-29 | 南京大学 | Method and device for governing landscape water by low-temperature plasma and air stripping combination process |
| CN102020386A (en) * | 2010-12-09 | 2011-04-20 | 浙江米利空气制水科技有限公司 | Multifunctional drinking water producing equipment and water treatment process |
| CN102557203A (en) * | 2010-12-20 | 2012-07-11 | 西安航科等离子体科技有限公司 | Method for purifying outdoor drinking water and portable outdoor drinking water purifying device |
| CN107410835A (en) * | 2017-04-05 | 2017-12-01 | 宁波欧琳厨具有限公司 | A kind of degradation of pesticide device |
| CN107715141A (en) * | 2017-09-29 | 2018-02-23 | 北京市农林科学院 | A kind of method based on atmos low-temperature plasma activated solution inactivation of viruses |
| WO2019024802A1 (en) * | 2017-07-31 | 2019-02-07 | 湖南长翔实业有限公司 | Water purification quality assurance system |
| CN112023239A (en) * | 2020-08-27 | 2020-12-04 | 北京化工大学 | Plasma hand disinfection device |
-
2009
- 2009-11-04 CN CN200910185297A patent/CN101698524A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101862169A (en) * | 2010-06-18 | 2010-10-20 | 南京大学 | Electric rotating brush type oil stain table top cleaning device based on low-temperature plasma bodies |
| CN101928090A (en) * | 2010-08-05 | 2010-12-29 | 南京大学 | Method and device for governing landscape water by low-temperature plasma and air stripping combination process |
| CN102020386A (en) * | 2010-12-09 | 2011-04-20 | 浙江米利空气制水科技有限公司 | Multifunctional drinking water producing equipment and water treatment process |
| CN102557203A (en) * | 2010-12-20 | 2012-07-11 | 西安航科等离子体科技有限公司 | Method for purifying outdoor drinking water and portable outdoor drinking water purifying device |
| CN107410835A (en) * | 2017-04-05 | 2017-12-01 | 宁波欧琳厨具有限公司 | A kind of degradation of pesticide device |
| WO2019024802A1 (en) * | 2017-07-31 | 2019-02-07 | 湖南长翔实业有限公司 | Water purification quality assurance system |
| CN107715141A (en) * | 2017-09-29 | 2018-02-23 | 北京市农林科学院 | A kind of method based on atmos low-temperature plasma activated solution inactivation of viruses |
| CN112023239A (en) * | 2020-08-27 | 2020-12-04 | 北京化工大学 | Plasma hand disinfection device |
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Open date: 20100428 |