CN100480192C - Method and apparatus for treating electrodeless discharging liquid - Google Patents
Method and apparatus for treating electrodeless discharging liquid Download PDFInfo
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- CN100480192C CN100480192C CNB2007100116915A CN200710011691A CN100480192C CN 100480192 C CN100480192 C CN 100480192C CN B2007100116915 A CNB2007100116915 A CN B2007100116915A CN 200710011691 A CN200710011691 A CN 200710011691A CN 100480192 C CN100480192 C CN 100480192C
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Abstract
A non-polarized discharge liquid treating device and treatment are disclosed. Plated electrode (7) and plated electrode (8) are discharging in liquid-phase, gas-liquid phase or gas-liquid mixed phase to realize high-voltage discharging plasma by high-voltage pulse or DC, heat-resistant insulating board (14) with hole (13) focuses electric field to locality, which makes local electric filed a certain height. It can realize plasma discharge, produce shock wave, ultraviolet ray and various active free radicals and remove various pollutants effectively. It's efficient and has no electrode melt.
Description
Technical field
The invention belongs to lower temperature plasma technology and water-treatment technology field, relate to a kind of method and device of high pressure pulse discharge Cement Composite Treated by Plasma waste water.
Background technology
Along with pollution is on the rise, the quality of water environment degradating trend further develops, make the traditional water treatment process be subjected to more stern challenge, particularly use the insoluble many water environment pollution problems of traditional chemical-biology, as removing of dephosphorization, denitrogenation, deodorization, decolouring, sterilization, micropollutant Dioxins etc.At present, carry out chemical reaction with pulsed discharge plasma technology in conjunction with the chemical free radical of the high reactivity of UV-light generation and carry out sewage disposal, become very important.
Sewage disposal technology discharges in the liquid, be plasma body, free radical, the uv-radiation that utilizes the Pulsed Discharge of the high-voltage 2～240kV that is dipped in the water, the big tens of kilo-amperes of electric current, and the shockwave of the rapid down generation of expanding of plasma channel hard condition is to the organic compound effect, the interrupt chain structure finally produces CO
2With H
2Simple molecules such as O make waste water innoxious fully.The plasma body that the strong pulse discharge is produced has high density storage energy and high bulking effect, can form intensive heat energy, swelling pressure heat energy, luminous energy, acoustic energy and radiation capacity, and then in water, produce various radicals, these active radicals can destroy the oxious component in the trade effluent, make trade effluent innoxious fully.
With high-voltage great-current impulsive discharge technical finesse waste water from dyestuff, can effectively destroy the dyestuff chromophoric group, dye solution is decoloured substantially, destroyed dye molecule, improved the biodegradable of solution, be a kind of promising dyestuff New Method for Processing.The high pressure pulse discharge water treatment is brought into play bigger effect at aspects such as the various difficult trade effluents of degraded, organic pesticide, extraordinary objectionable impuritiess.
As shown in Figure 1, it is an electric field distribution synoptic diagram in the existing high-voltage pulse discharge in water water treatment device.This device is that board-like electrode 1 and needle electrode 2 are inserted in the insulated case 3, board-like electrode 1 usefulness electrode suppor 4 is fixed in the insulated case 3, insulated case 3 is provided with water-in 5 and water outlet 6, sewage feeds in the insulated case 3 from water-in 5, between two electrodes, apply high-voltage pulse, make between board-like electrode 1 and the needle electrode 2 discharge in water takes place, its electric field distribution as shown in Figure 1.The plasma body that discharge in water produces can produce active substance, ultraviolet ray and shockwave, effectively removes pollutants in sewage.
Although the high pressure pulse discharge water treatment method has good effect and wide application prospect, because the localized hyperthermia of discharge electrode can make consumption of electrode too fast in the existing this device, the dissolved electrode can cause that water body pollutes once more; The deficiency that discharge difficulty, effect descend when in addition, also existing high conductivity.
Summary of the invention
The purpose of this invention is to provide a kind of stepless discharging liquid treatment process and treatment unit, electrode dissolves problem and high conductivity decrease in efficiency problem in the time of can solving discharge, removes all contaminations matter in the trade effluent effectively.
For reaching above-mentioned purpose, technical scheme of the present invention is as follows:
A kind of stepless discharging liquid treatment process, comprise the steps: board-like electrode 7, board-like electrode 8 is used electrode suppor 9 respectively, electrode suppor 10 is fixed in the two ends of discharge vessel 11, electrode suppor 9, electrode suppor 10 is connected to two output terminals of high-voltage pulse power source 12, with the insulcrete 14 that is provided with aperture 13 discharge vessel 11 is separated into top region of discharge 15, bottom region of discharge 16, by high-voltage pulse power source 12 at board-like electrode 7, applying crest voltage between the board-like electrode 8 is 2～60kV, frequency is the pulsed voltage of 1～10kHz, in bottom region of discharge 16, feed gas by gas inlet 19 earlier, make and produce the gas phase discharge process in the bottom region of discharge 16, in top region of discharge 15, feed waste water by liquid inlet 17 again, make and produce the discharge in water effect in the top region of discharge 15, be purified after the acting in conjunction of waste water through gas phase discharge and discharge in water, and then discharge discharge vessel 11 from liquid exit 18.
A kind of stepless discharging liquid treatment process, comprise the steps: board-like electrode 7, board-like electrode 8 is used electrode suppor 9 respectively, electrode suppor 10 is fixed in the two ends of discharge vessel 11, electrode suppor 9, electrode suppor 10 is connected to two output terminals of high-voltage pulse power source 12, with the insulcrete 14 that is provided with aperture 13 discharge vessel 11 is separated into top region of discharge 15, bottom region of discharge 16, by high-voltage pulse power source 12 at board-like electrode 7, applying crest voltage between the board-like electrode 8 is 2～60kV, frequency is the pulsed voltage of 1～10kHz, in bottom region of discharge 16, feed waste water by liquid inlet 21 earlier, make and produce the discharge in water effect in the bottom region of discharge 16, when waste water is in aperture 13 enters top region of discharge 15, in bottom region of discharge 16, feed gas by gas inlet 19 again, make bottom region of discharge 16 near aperture 13, produce the gas-liquid mixed discharge effect, be purified after the acting in conjunction of waste water through discharge in water and gas-liquid mixed discharge, and then discharge discharge vessel 11 from liquid exit 18.
A kind of stepless discharging liquid treatment unit, this device is by board-like electrode 7, board-like electrode 8, electrode suppor 9, electrode suppor 10, discharge vessel 11, high-voltage pulse power source 12, be provided with the insulcrete 14 of one or more apertures 13, liquid inlet 17, liquid exit 18, gas inlet 19, valve 20 and liquid inlet 21 are formed, board-like electrode 7, board-like electrode 8 is respectively by electrode suppor 9, electrode suppor 10 is fixed in the two ends up and down of discharge vessel 11, electrode suppor 9, electrode suppor 10 is connected to two output terminals of high-voltage pulse power source 12, insulcrete 14 is separated into top region of discharge 15 and bottom region of discharge 16 two portions with discharge vessel 11, liquid inlet 17 and liquid exit 18 are located in the top region of discharge 15 of discharge vessel 11, gas inlet 19 and liquid inlet 21 are located in the bottom region of discharge 16 of discharge vessel 11, and 19 places, gas inlet are provided with valve 20.
Described discharge vessel 11 is insulated case or insulating cylinder; The diameter of described aperture 13 is 0.5～3mm.
A kind of stepless discharging liquid treatment process, comprise the steps: board-like electrode 7, board-like electrode 8 is used electrode suppor 9 respectively, electrode suppor 10 is fixed in the two ends of discharge vessel 11, electrode suppor 9, electrode suppor 10 is connected to two output terminals of high-voltage pulse power source 12, with the insulcrete 14 that is provided with aperture 13 discharge vessel 11 is separated into top region of discharge 15, bottom region of discharge 16, by high-voltage pulse power source 12 at board-like electrode 7, applying crest voltage between the board-like electrode 8 is 2～60kV, frequency is the pulsed voltage of 1～10kHz, in bottom region of discharge 16, feed waste water by liquid inlet 21, waste water flows into top region of discharge 15 through aperture 13, make top region of discharge 15, all produce the discharge in water effect in the bottom region of discharge 16, be purified after the effect of waste water process discharge in water, and then discharge discharge vessels 11 from liquid exit 18.
Beneficial effect of the present invention is: utilize high-voltage pulse or direct current, in narrow positions internal field is concentrated reinforcement, make internal field reach enough height, realize plasma discharge in narrow positions, the present invention inserts heat-resistant insulation material between two electrodes, effectively virtual electrode is separated with discharge electrode, electrode dissolves problem when having solved discharge, and time discharge in the realization liquids and gases, improved the generation probability of active particle effectively, improved the removal efficient of organic pollutant, still effective to the processing of high conductivity liquid.
Description of drawings
Fig. 1 is an electric field distribution synoptic diagram in the existing high-voltage pulse discharge in water water treatment device.
Fig. 2 is an electric field distribution synoptic diagram in a kind of stepless discharging liquid treatment unit of the present invention.
Fig. 3 is a kind of stepless discharging liquid treatment unit synoptic diagram of one embodiment of the invention.
Fig. 4 is a kind of stepless discharging liquid treatment unit synoptic diagram of another embodiment of the present invention.
Among the figure: 1, board-like electrode, 2, needle electrode, 3, insulated case, 4, electrode suppor, 5, water-in, 6, water outlet, 7, board-like electrode, 8, board-like electrode, 9, electrode suppor, 10, electrode suppor, 11, discharge vessel, 12, high-voltage pulse power source, 13, aperture, 14, insulcrete, 15, the top region of discharge, 16, bottom region of discharge, 17, the liquid inlet, 18, liquid exit, 19, gas inlet, 20, valve, 21, the liquid inlet.
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further details:
As shown in Figures 2 and 3, be used for the electrodeless discharge pulse plasma body fluid gas electric discharge device of wastewater treatment, comprise high-voltage pulse power source 12, board-like electrode 7, board-like electrode 8, electrode suppor 9, electrode suppor 10 and have the discharge vessel 11 of insulcrete 14.Discharge vessel 11 is an insulated case, this insulated case is the cylinder of diameter 45mm, insulcrete 14 is a ceramic plate, electrode suppor 9, electrode suppor 10 are two metallic rod, and diameter is the board-like electrode 7 of 40mm and board-like electrode 8 above and below by the insulcrete 14 of described two metallic rod horizontal fixed in insulated case.Have the aperture 13 of one or more 0.5～3mm on the insulcrete 14, insulcrete 14 is separated into top region of discharge 15 and bottom region of discharge 16 two portions with insulated case.Insulated case is provided with a liquid inlet 17 and a liquid exit 18 in top region of discharge 15, be provided with a gas inlet 19 in bottom region of discharge 16.
Board-like electrode 7, board-like electrode 8 are connected in the positive-negative output end of high-voltage pulse power source 12 respectively by electrode suppor 9, electrode suppor 10, the pulse power parameter that applies between two electrodes is: crest voltage 2～60kV, frequency 1～10kHz, rising front≤100ns.Under the effect of high-voltage pulse, the electric field distribution that forms in the discharge vessel 11 is concentrated reinforcement in narrow positions with internal field as shown in Figure 2, makes internal field reach enough height, realizes plasma discharge in narrow positions.
During treatment liq waste water, earlier 19 feed gases, 17 feed the liquid waste water from the liquid inlet again to top region of discharge 15 to bottom region of discharge 16 from the gas inlet.The discharge in water plasma physical efficiency that forms at top region of discharge 15 discharge in water produces a large amount of various active substances, ultraviolet ray, shockwave, the active substance that forms through the discharge of bottom region of discharge 16 gas phases enters in the liquid waste water by aperture 13, combined action by these active substances, ultraviolet ray, blast effect, can more effectively remove all contaminations in the waste water, improve the efficient of wastewater treatment to a great extent.
As shown in Figure 4, it is a kind of stepless discharging liquid treatment unit synoptic diagram of another embodiment of the present invention.The difference of this device and device shown in Figure 3 is that discharge vessel 11 is provided with a liquid exit 18 in top region of discharge 15, is provided with a gas inlet 19 and a liquid inlet 21 in bottom region of discharge 16.
Device shown in Figure 4 has two kinds of embodiment when treatment liq waste water:
A kind of embodiment is: earlier 21 feed the liquid waste water, make waste water enter top region of discharge 15 by the aperture on the insulcrete 14 13 to bottom region of discharge 16 from the liquid inlet, open again valve 20 from the gas inlet 19 downward region of discharges 16 feeding gases.Gas forms bubble through bottom region of discharge 16 near aperture 13, the discharge that forms in the bubble forms the phenomenon of gas-liquid discharge coexistence to the top of both sides region of discharge 15 and 16 expansions of bottom region of discharge, and gas liquid mixture enters top region of discharge 15 through small holes 13.The active substance that forms through the discharge of gas-liquid mixed discharge district enters in the liquid waste water of top region of discharge 15 by aperture 13, the discharge in water plasma physical efficiency that forms at top region of discharge 15 discharge in water produces a large amount of various active substances, ultraviolet ray, shockwave simultaneously, combined action by these active substances, ultraviolet ray, blast effect, can more effectively remove all contaminations in the waste water, active substance enters in the liquid waste water by aperture 13, has improved the efficient of wastewater treatment to a great extent.
Another kind of embodiment is: only 21 feed the liquid waste water to bottom region of discharge 16 from the liquid inlet, valve 20 remains closing condition, and promptly gas flow is always zero.Waste water flows into top region of discharge 15 through small holes 13, in two region of discharges, produce discharge in water, the discharge in water plasma physical efficiency that is formed by discharge in water produces a large amount of various active substances, ultraviolet ray, shockwave, by the combined action of these active substances, ultraviolet ray, blast effect, can more effectively remove all contaminations in the waste water.
Following table is respectively that the experimental result of utilizing Fig. 3 of the present invention, Fig. 4 device to handle waste water is handled the experimental result of waste water with utilizing prior art Fig. 1 device:
| Electric discharge device | Pollutent | Initial concentration (mg/L) | Specific conductivity (mS/em) | Time (min) | Decreasing ratio (%) |
| Fig. 1 | Phenol | 50 | 0.14 0.8? | 30 | 95.6 10.5 |
| Fig. 3 | Tropeolin-D | 30 | 0.14 0.8? | 30 | 98.8 95.2 |
| Fig. 4 | Phenol | 50 | 0.14 0.8? | 30 | 100? 98.3 |
Comparison by last table, as can be seen, the present invention utilizes high-voltage pulse or direct current, in narrow positions internal field is concentrated reinforcement, make internal field reach enough height, realize plasma discharge in narrow positions, between two electrodes, insert heat-resistant insulation material, effectively virtual electrode is separated with discharge electrode, electrode dissolves problem when having solved discharge, and discharge when realizing in the liquids and gases, has improved the generation probability of active particle effectively, improved the removal efficient of organic pollutant, still effective to the processing of high conductivity liquid.
Claims (6)
1, a kind of stepless discharging liquid treatment process, it is characterized in that, this method comprises the steps: the first board-like electrode (7), the second board-like electrode (8) is used first electrode suppor (9) respectively, second electrode suppor (10) is fixed in the two ends of discharge vessel (11), first electrode suppor (9), second electrode suppor (10) is connected to two output terminals of high-voltage pulse power source (12), with the insulcrete that is provided with aperture (13) (14) discharge vessel (11) is separated into top region of discharge (15), bottom region of discharge (16), by high-voltage pulse power source (12) at the first board-like electrode (7), applying crest voltage between the second board-like electrode (8) is 2～60kV, frequency is the pulsed voltage of 1～10kHz, in bottom region of discharge (16), feed gas by gas inlet (19) earlier, make and produce the gas phase discharge process in the bottom region of discharge (16), in top region of discharge (15), feed waste water by first liquid inlet (17) again, make and produce the discharge in water effect in the top region of discharge (15), be purified after the acting in conjunction of waste water through gas phase discharge and discharge in water, and then discharge discharge vessel (11) from liquid exit (18).
2, a kind of stepless discharging liquid treatment process, it is characterized in that, this method comprises the steps: the first board-like electrode (7), the second board-like electrode (8) is used first electrode suppor (9) respectively, second electrode suppor (10) is fixed in the two ends of discharge vessel (11), first electrode suppor (9), second electrode suppor (10) is connected to two output terminals of high-voltage pulse power source (12), with the insulcrete that is provided with aperture (13) (14) discharge vessel (11) is separated into top region of discharge (15), bottom region of discharge (16), by high-voltage pulse power source (12) at the first board-like electrode (7), applying crest voltage between the second board-like electrode (8) is 2～60kV, frequency is the pulsed voltage of 1～10kHz, in bottom region of discharge (16), feed waste water by second liquid inlet (21) earlier, make and produce the discharge in water effect in the bottom region of discharge (16), when waste water is in aperture (13) enters top region of discharge (15), in bottom region of discharge (16), feed gas by gas inlet (19) again, make bottom region of discharge (16) near aperture (13), produce the gas-liquid mixed discharge effect, be purified after the acting in conjunction of waste water through discharge in water and gas-liquid mixed discharge, and then discharge discharge vessel (11) from liquid exit (18).
3, a kind of stepless discharging liquid treatment process, it is characterized in that, this method comprises the steps: the first board-like electrode (7), the second board-like electrode (8) is used first electrode suppor (9) respectively, second electrode suppor (10) is fixed in the two ends of discharge vessel (11), first electrode suppor (9), second electrode suppor (10) is connected to two output terminals of high-voltage pulse power source (12), with the insulcrete that is provided with aperture (13) (14) discharge vessel (11) is separated into top region of discharge (15), bottom region of discharge (16), by high-voltage pulse power source (12) at the first board-like electrode (7), applying crest voltage between the second board-like electrode (8) is 2～60kV, frequency is the pulsed voltage of 1～10kHz, in bottom region of discharge (16), feed waste water by second liquid inlet (21), waste water flows into top region of discharge (15) through aperture (13), make top region of discharge (15), the bottom region of discharge all produces the discharge in water effect in (16), be purified after the effect of waste water process discharge in water, and then discharge discharge vessel (11) from liquid exit (18).
4, use as claim 1, the device of 2 or 3 described a kind of stepless discharging liquid treatment processs, it is characterized in that, this device is by the first board-like electrode (7), the second board-like electrode (8), first electrode suppor (9), second electrode suppor (10), discharge vessel (11), high-voltage pulse power source (12), be provided with the insulcrete (14) of one or more apertures (13), first liquid inlet (17), liquid exit (18), gas inlet (19), valve (20) and second liquid inlet (21) are formed, the first board-like electrode (7), the second board-like electrode (8) is respectively by first electrode suppor (9), second electrode suppor (10) is fixed in the two ends up and down of discharge vessel (11), first electrode suppor (9), second electrode suppor (10) is connected to two output terminals of high-voltage pulse power source (12), insulcrete (14) is separated into top region of discharge (15) and bottom region of discharge (16) two portions with discharge vessel (11), first liquid inlet (17) and liquid exit (18) are located in the top region of discharge (15) of discharge vessel (11), gas inlet (19) and second liquid inlet (21) are located in the bottom region of discharge (16) of discharge vessel (11), and gas inlet (19) locate to be provided with valve (20).
5, the device of a kind of stepless discharging liquid treatment process as claimed in claim 4 is characterized in that, described discharge vessel (11) is insulated case or insulating cylinder.
6, the device of a kind of stepless discharging liquid treatment process as claimed in claim 4 is characterized in that, the diameter of described aperture (13) is 0.5～3mm.
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| CNB2007100116915A CN100480192C (en) | 2007-06-11 | 2007-06-11 | Method and apparatus for treating electrodeless discharging liquid |
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| CNB2007100116915A CN100480192C (en) | 2007-06-11 | 2007-06-11 | Method and apparatus for treating electrodeless discharging liquid |
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| CN100480192C true CN100480192C (en) | 2009-04-22 |
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| EP2902370B1 (en) * | 2012-09-28 | 2020-10-21 | Daikin Industries, Ltd. | Water treatment device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP2902370B1 (en) * | 2012-09-28 | 2020-10-21 | Daikin Industries, Ltd. | Water treatment device |
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