CN106044955A - Method for improving micro-plasma arc discharge catalysis water treatment by adding surfactant - Google Patents
Method for improving micro-plasma arc discharge catalysis water treatment by adding surfactant Download PDFInfo
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- CN106044955A CN106044955A CN201610346177.6A CN201610346177A CN106044955A CN 106044955 A CN106044955 A CN 106044955A CN 201610346177 A CN201610346177 A CN 201610346177A CN 106044955 A CN106044955 A CN 106044955A
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- Prior art keywords
- electrode
- surfactant
- power supply
- additive
- water treatment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/46—Apparatus for electrochemical processes
- C02F2201/461—Electrolysis apparatus
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Plasma Technology (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The invention discloses a method for improving micro-plasma arc discharge catalysis water treatment by adding a surfactant. The method comprises the following steps: adding an additive and the surfactant into a to-be-treated liquid; opening a cooling water circulation system and a stirring system; inserting an electrode I and an electrode II into a reaction pool; adding the to-be-treated liquid containing the additive and the surfactant into the reaction pool; switching on a power supply between the electrode I and the electrode II, gradually increasing voltage, and allowing the power supply to stably discharge under parameters of the power supply; analyzing water treatment effects; and completing water treatment. According to the invention, the surfactant is added for micro-arc discharge treatment of wastewater; and the addition of a small amount of the surfactant can reinforce stability of bubbles generated in discharge and stirring. Since the bubbles exert promoting effects on discharge through influences on plasma in the aspects of chemical reactions and mass transfer, treatment effect is also improved with the increase of the addition amount of the surfactant.
Description
Technical field
The invention belongs to environmental project water-treatment technology field, relate to a kind of surfactant that adds and improve microplasma
Arc discharging catalytic water treatment method.
Background technology
Under electric field action, containing a large amount of high energy active particles in the plasma that discharge in water process produces, to many
Molecule has destruction.These high energy active particles combine with catalyst, can be effectively improved discharge process effect, promote organic
Molecular breakdown, thus become pollution Processing Technology Research and the focus of exploitation.
The micro-arc discharge carried out as working electrode using the valve metal of titaniferous, can on electrode generated in-situ titanium dioxide
Titanium, plays catalytic action, the formation of strengthening hydroxyl radical free radical in the plasma that electric discharge produces.It is to say, discharge system
Define a most integrated liquid phase plasma-catalyzing cooperation system.Meanwhile, O working electrode produced because of electrolysis2Gas
Body, it is provided that the easily gas-phase space of electric discharge, O2Reactant is provided for OH free radical.Therefore, compare add in the electrolytic solution catalyst and
Logical oxygen-containing gas carrys out enhanced discharge, and this system can more give full play to produce in discharge process high energy particle, the effect of high-energy environment,
Present the multiformity of reaction, concertedness and the catalyst good selectivity to OH free radical reaction of formation.
For enhanced discharge intensity, improve water treatment efficiency, general discharge in water can consider the logical gas containing oxygen,
Carrying out enhanced discharge by gas phase, oxygen therein promotes the formation of hydroxyl radical free radical.But which increase complexity and the water of equipment
The cost processed.
Summary of the invention
According to technical problem set forth above, and a kind of surfactant improvement micro plasma arc discharging that adds is provided to urge
Water chemical treatment method.
The technological means that the present invention uses is as follows:
A kind of surfactant that adds improves micro plasma arc discharging catalytic water treatment method, has following steps:
S1, in pending liquid, add additive and surfactant；
S2, open cooling water recirculation system and stirring system；
S3, electrode I and electrode II are inserted in reaction tank；
S4, will join in described reaction tank containing the pending liquid of additive and surfactant；
S5, the power supply connected between described electrode I and described electrode II, and gradually rise voltage, make described power supply in institute
State stable discharging under the parameter of power supply；
S6, analysis water treatment efficiency；
S7, water process terminate,
Said method can be divided into static treatment method and method for dynamically processing according to the state difference of pending liquid,
Described static treatment method has following steps:
1) in pending liquid, additive and surfactant are added；
2) cooling water recirculation system and stirring system are opened；
3) electrode I and electrode II are inserted in reaction tank；
4) will join in described reaction tank containing the pending liquid of additive and surfactant；
5) connect the power supply between described electrode I and described electrode II, and gradually rise voltage, make described power supply described
Stable discharging under the parameter of power supply；
6) water treatment efficiency is analyzed: the change of water quality of pending liquid chemically examined by timing sampling, by calculating treatmenting time in advance,
And combine result of laboratory test, determine the process end time；
7) water process terminates: be gradually lowered described supply voltage to after 10-20V, then close successively power supply, stirring system and
Cooling water recirculation system,
Described method for dynamically processing has following steps:
1) in pending liquid, add additive and surfactant, i.e. add in pending liquid input tube road and add
Agent and surfactant；
2) cooling water recirculation system and stirring system are opened；
3) electrode I and electrode II are inserted in reaction tank；
4) will join in described reaction tank containing the pending liquid of additive and surfactant；
5) connect the power supply between described electrode I and described electrode II, and gradually rise voltage, make described power supply described
Stable discharging under the parameter of power supply；
6) analyze water treatment efficiency: analyze the water quality after the process that reaction tank flows out, according to result of laboratory test, regulate liquid
The flow of turnover reaction tank, makes treatment effect meet requirement；
7) water process terminates: stop inputting pending liquid in described reaction tank, is gradually lowered voltage to after 10-20V, then
Close power supply, stirring system and cooling water recirculation system successively.
When described power supply is unipolar power source, described electrode I is working electrode；
When described power supply is bipolar power supply, described electrode I and electrode II electrode are working electrode,
The material of described working electrode is valve metal and the alloy thereof of titaniferous,
The concentration of described additive is 0.5-50g/L, and described additive is sodium silicate, sodium carbonate, sodium aluminate or sodium sulfate
In one or several.
By described electrode I and described electrode II, reaction system is applied voltage, enable described working electrode surface former
Position generates loaded catalyst and carries out discharge catalytic.
The concentration of described surfactant is 0.1-500ppm, and described surfactant is alkyl polyglucoside, amine-oxides, thiazolinyl
One or several in glycol ester, glyceride or alkylolamides series.Surface-active contents is less than relevant discharge of wastewater
Restriction to COD in standard.
Reaction before pending liquid begin to sufficiently stir, this not only for strengthen mass transfer, especially in order to
The bubble containing air can be produced, it addition, during reaction, working electrode also can produce the bubble containing oxygen.Surfactant has
There is higher surface activity, can effectively reduce the surface tension of liquid, and surround air in the arrangement of liquid film surface electric double layer,
Form bubble, then formed foam by single isolated bubbles.Therefore the bubble during surfactant can make pending liquid is the most relatively
For stably existing.Because with the addition of trace surfactant, only by strengthening stirring action, it is possible to make treatment effect promote.
Described unipolar power source be voltage be DC source or unipolar pulse that voltage peak the is 80V-1kV electricity of 80V-1kV
Source.
Described bipolar power supply be voltage peak be 80V-1kV, exchange frequency be 10-3-105The alternating current power supply of Hz or bipolar arteries and veins
Rush power supply.
Described valve metal is titanium, magnesium or aluminum.
Described working electrode is shaped as tabular or needle-like.
It is 5mm that described working electrode is positioned at the electrode surface area in pending liquid2-1dm2。
Electrode spacing between described electrode I and described electrode II is 2-50mm.
Above-mentioned each parameter should be divided according to kinetic reaction speed constant according to processing system structure, the water quality of pending liquid
Analysis and discharge stability and actual processing effect, determine its optimum.
The invention have the advantages that
The present invention uses interpolation surfactant to carry out micro-arc discharge and processes waste water.It is fixing that surfactant is that one has
Hydrophilic and oleophilic group, a small amount of interpolation can make the interface state of solution system that the material substantially changed occurs, have good
Foaming characteristic and foam stability, a small amount of surfactant of addition can make the bubble stability that the bubble produced in electric discharge and stirring produce
Strengthen.Owing to electric discharge is played a driving role by bubble by the impact in terms of plasma chemical reaction and mass transfer, so with
The addition surfactant increases, and treatment effect increases equally.
The present invention can be widely popularized in fields such as environmental project water technologies for the foregoing reasons.
Accompanying drawing explanation
The present invention is further detailed explanation with detailed description of the invention below in conjunction with the accompanying drawings.
Fig. 1 is the processing means structural representation in the detailed description of the invention of the present invention.
Detailed description of the invention
A kind of surfactant that adds improves micro plasma arc discharging catalytic water treatment method, has following steps:
S1, in pending liquid, add additive and surfactant；
S2, open cooling water recirculation system and stirring system；
S3, electrode I and electrode II are inserted in reaction tank；
S4, will join in described reaction tank containing the pending liquid of additive and surfactant；
S5, the power supply connected between described electrode I and described electrode II, and gradually rise voltage, make described power supply in institute
State stable discharging under the parameter of power supply；
S6, analysis water treatment efficiency；
S7, water process terminate,
When described power supply is unipolar power source, described electrode I is working electrode；
When described power supply is bipolar power supply, described electrode I and electrode II electrode are working electrode,
The material of described working electrode is valve metal and the alloy thereof of titaniferous,
The concentration of described additive is 0.5-50g/L, and described additive is sodium silicate, sodium carbonate, sodium aluminate or sodium sulfate
In one or several.
The concentration of described surfactant is 0.1-500ppm, and described surfactant is alkyl polyglucoside, amine-oxides, thiazolinyl
One or several in glycol ester, glyceride or alkylolamides series.
Described unipolar power source be voltage be DC source or unipolar pulse that voltage peak the is 80V-1kV electricity of 80V-1kV
Source.
Described bipolar power supply be voltage peak be 80V-1kV, exchange frequency be 10-3-105The alternating current power supply of Hz or bipolar arteries and veins
Rush power supply.
Described valve metal is titanium, magnesium or aluminum.
Described working electrode is shaped as tabular or needle-like.
It is 5mm that described working electrode is positioned at the electrode surface area in pending liquid2-1dm2。
Electrode spacing between described electrode I and described electrode II is 2-50mm.
Embodiment 1
A kind of surfactant that adds improves micro plasma arc discharging catalytic water treatment method, has following steps:
1) in pending liquid 1, additive and surfactant are added；
2) cooling water recirculation system 2 and magnetic agitation system 3 are opened；
3) electrode I 4 and electrode II 5 are inserted in reaction tank 6；
4) the pending liquid 1 containing additive and surfactant is joined in described reaction tank 6；
5) connect the DC source 7 between described electrode I 4 and described electrode II 5, and gradually rise voltage, make described directly
Stream power supply 7 stable discharging under the parameter of described DC source 7；
6) water treatment efficiency is analyzed: the change of water quality of pending liquid 1 chemically examined by timing sampling, when processing by calculating in advance
Between, and combine result of laboratory test, determine the process end time；
7) water process terminates: is gradually lowered described DC source 7 voltage to after 10-20V, then closes described unidirectional current successively
Source 7, described magnetic agitation system 3 and cooling water recirculation system 2,
The concentration of described additive is 15g/L, and described additive is sodium silicate, and described surfactant is coconut oil list second
Alkylolamides, concentration is 10ppm.Described Coconut Fatty Acid Monoethanolamide belongs to alkylolamides series.
Described electrode I 4 is working electrode, and material includes the material of following weight portion: titanium: 70 parts, aluminum: 30 parts, and not
Evitable trace element, the material of electrode II 5 is rustless steel,
Described DC source 7 is the DC source of 500V for voltage.
Electrode spacing between described electrode I 4 and described electrode II 5 is 10mm.
The electrode surface area that described electrode I 4 and described electrode II 5 are positioned in pending liquid 1 is 6000mm2。
Described electrode I 4 and described electrode II 5 are plate electrode.
To be added with the distilled water pending liquid 1 of simulation of bright red B in the present embodiment, it is weak that described bright red B belongs to azo dyes
Acid stain, is dyestuff conventional in printing and dyeing industry and textile industry, and containing phenyl ring, processes such by methods such as chemistry and biologies
The effect of waste water is the most undesirable.The initial concentration of bright red B solution is 20mg/L, and the content of described pending liquid 1 is 1000mL.
During processing pending liquid 1, measured the absorption maximum of pending liquid 1 by ultraviolet-visible spectrophotometer
Absorbance change at wavelength, to reflect the decolorizing effect of bright red B solution.
Test result indicate that, compared with not attaching surfactant, add the pending liquid 1 of surfactant in 6min
Percent of decolourization can promote 10%.
Embodiment 2
A kind of surfactant that adds improves micro plasma arc discharging catalytic water treatment method, its with described in embodiment 1
A kind of add surfactant improve micro plasma arc discharging catalytic water treatment method distinguishing characteristics be:
Described surfactant is thiazolinyl glycol ester, and concentration is 5ppm.
Test result indicate that, add the surfactant of same amount, only stirring intensity is suitably strengthened before reaction, process effect
Fruit also can be improved.The treatment effect that before reaction, 150s starts to stir starts the treatment effect of stirring higher than 30s before reaction, about
Promote 10%.
Embodiment 3
A kind of surfactant that adds improves micro plasma arc discharging catalytic water treatment method, its with described in embodiment 1
A kind of add surfactant improve micro plasma arc discharging catalytic water treatment method distinguishing characteristics be:
Described surfactant is alkyl polyglucoside, and concentration is 10ppm.
Test result indicate that, adding surfactant appropriate ways stirring, because introducing bubble, and bubble can be stablized relatively
Stopping in liquid phase, ratio is not added with surfactant, and 4min can make percent of decolourization improve 8%.
The above, the only present invention preferably detailed description of the invention, but protection scope of the present invention is not limited thereto,
Any those familiar with the art in the technical scope that the invention discloses, according to technical scheme and
Inventive concept equivalent or change in addition, all should contain within protection scope of the present invention.
Claims (8)
1. one kind is added surfactant improvement micro plasma arc discharging catalytic water treatment method, it is characterised in that have as follows
Step:
S1, in pending liquid, add additive and surfactant；
S2, open cooling water recirculation system and stirring system；
S3, electrode I and electrode II are inserted in reaction tank；
S4, will join in described reaction tank containing the pending liquid of additive and surfactant；
S5, the power supply connected between described electrode I and described electrode II, and gradually rise voltage, make described power supply at described electricity
Stable discharging under the parameter in source；
S6, analysis water treatment efficiency；
S7, water process terminate,
When described power supply is unipolar power source, described electrode I is working electrode；
When described power supply is bipolar power supply, described electrode I and electrode II electrode are working electrode,
The material of described working electrode is valve metal and the alloy thereof of titaniferous,
The concentration of described additive is 0.5-50g/L, and described additive is in sodium silicate, sodium carbonate, sodium aluminate or sodium sulfate
One or several.
Method the most according to claim 1, it is characterised in that: the concentration of described surfactant is 0.1-500ppm, institute
Stating surfactant is the one in alkyl polyglucoside, amine-oxides, thiazolinyl glycol ester, glyceride or alkylolamides series or number
Kind.
Method the most according to claim 1, it is characterised in that: described unipolar power source be voltage be the unidirectional current of 80V-1kV
Source or the unipolar pulse power supply that voltage peak is 80V-1kV.
Method the most according to claim 1, it is characterised in that: described bipolar power supply be voltage peak be 80V-1kV, exchange
Frequency is 10-3-105The alternating current power supply of Hz or bipolar pulse power supply.
Method the most according to claim 1, it is characterised in that: described valve metal is titanium, magnesium or aluminum.
Method the most according to claim 1, it is characterised in that: described working electrode is shaped as tabular or needle-like.
Method the most according to claim 1, it is characterised in that: described working electrode is positioned at the electrode surface in pending liquid
Amass as 5mm2-1dm2。
Method the most according to claim 1, it is characterised in that: the electrode spacing between described electrode I and described electrode II
For 2-50mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610346177.6A CN106044955A (en) | 2016-05-23 | 2016-05-23 | Method for improving micro-plasma arc discharge catalysis water treatment by adding surfactant |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610346177.6A CN106044955A (en) | 2016-05-23 | 2016-05-23 | Method for improving micro-plasma arc discharge catalysis water treatment by adding surfactant |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1653865A (en) * | 2002-05-08 | 2005-08-10 | 译民·托马斯·张 | A plasma formed in a fluid |
| KR20120012020A (en) * | 2010-07-30 | 2012-02-09 | 한국기계연구원 | Ballast water treatment apparatus based on plasma discharging using micro bubble |
| CN104692484A (en) * | 2015-03-20 | 2015-06-10 | 大连海事大学 | Water treatment method for carrying out microplasma arc discharge catalysis through titanium-aluminum bimetallic electrodes |
| CN104709970A (en) * | 2015-03-20 | 2015-06-17 | 大连海事大学 | Method for catalyzing water treatment by performing microplasma arc discharge with asymmetric electrodes |
| CN104709971A (en) * | 2015-03-20 | 2015-06-17 | 大连海事大学 | Micro-plasma arc discharge catalyzed water treatment method utilizing alternating-current power source |
| US20160137529A1 (en) * | 2014-11-17 | 2016-05-19 | Drexel University | Plasma Spark Discharge Reactor and Durable Electrode |
-
2016
- 2016-05-23 CN CN201610346177.6A patent/CN106044955A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1653865A (en) * | 2002-05-08 | 2005-08-10 | 译民·托马斯·张 | A plasma formed in a fluid |
| KR20120012020A (en) * | 2010-07-30 | 2012-02-09 | 한국기계연구원 | Ballast water treatment apparatus based on plasma discharging using micro bubble |
| US20160137529A1 (en) * | 2014-11-17 | 2016-05-19 | Drexel University | Plasma Spark Discharge Reactor and Durable Electrode |
| CN104692484A (en) * | 2015-03-20 | 2015-06-10 | 大连海事大学 | Water treatment method for carrying out microplasma arc discharge catalysis through titanium-aluminum bimetallic electrodes |
| CN104709970A (en) * | 2015-03-20 | 2015-06-17 | 大连海事大学 | Method for catalyzing water treatment by performing microplasma arc discharge with asymmetric electrodes |
| CN104709971A (en) * | 2015-03-20 | 2015-06-17 | 大连海事大学 | Micro-plasma arc discharge catalyzed water treatment method utilizing alternating-current power source |
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