CN111559788A - Inclined conveyor belt dielectric barrier discharge pollutant treatment device - Google Patents
Inclined conveyor belt dielectric barrier discharge pollutant treatment device Download PDFInfo
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- CN111559788A CN111559788A CN202010426556.2A CN202010426556A CN111559788A CN 111559788 A CN111559788 A CN 111559788A CN 202010426556 A CN202010426556 A CN 202010426556A CN 111559788 A CN111559788 A CN 111559788A
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- water inlet
- tank
- conveyor belt
- water
- dielectric barrier
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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
- C02F1/48—Treatment of water, waste water, or sewage with magnetic or electric fields
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/32—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by electrical effects other than those provided for in group B01D61/00
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/80—Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
- B01D2259/818—Employing electrical discharges or the generation of a plasma
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/32—Hydrocarbons, e.g. oil
- C02F2101/322—Volatile compounds, e.g. benzene
-
- 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
- C02F2201/002—Construction details of the apparatus
-
- 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
- C02F2201/48—Devices for applying magnetic or electric fields
Abstract
The invention discloses a dielectric barrier discharge pollutant treatment device for an inclined conveyor belt, which is characterized in that: comprises a water inlet tank and a water discharge tank; the water inlet of the water inlet tank is connected with a water inlet pipe, and a water inlet pipeline is made of metal and is grounded; the water inlet of the drainage tank is connected with a drainage pipe; the top parts of the water inlet tank and the water discharge tank are provided with inclined conveyor belts, and the front ends of the conveyor belts are immersed into the water inlet tank and can convey sewage into the water discharge tank at the rear end; the upper end of the conveyor belt is provided with a dielectric barrier high-voltage electrode parallel to the conveyor belt, so that sewage on the conveyor belt can be discharged, and high-energy active substances are generated to degrade pollutants. The invention can realize high-efficiency treatment of high-concentration low-fluidity organic polluted sewage.
Description
Technical Field
The invention belongs to the technical field of pollutant treatment, and particularly relates to an inclined conveyor belt dielectric barrier discharge pollutant treatment device.
Background
With the development of the industries such as chemical industry, printing and dyeing, pharmacy and the like and the rise of the industries such as semiconductors, flat panel displays and the like, various novel pollutants emerge endlessly, so that the pollution problem caused by high-concentration refractory organic wastewater is gradually aggravated, and more challenges are brought to environmental protection. The treatment of refractory organic pollutants has been a difficult point and a key point in environmental protection. The organic matter which is difficult to degrade refers to a compound which can not be degraded by organisms or can not be degraded in any environment at a high enough speed so that the organic matter can be accumulated in the environment for a long time, and the organic matter has the characteristics of easy biological enrichment, serious environmental pollution, great harm to human bodies and the like. The common organic pollution difficult to degrade comprises toxic and harmful substances such as heterocyclic compounds, polycyclic aromatic hydrocarbons, halogenated hydrocarbons, cyanogen-containing compounds and the like.
For these refractory organic pollutants, in addition to traditional methods of treatment of symptoms such as adsorption, filtration or chemical methods, advanced oxidation methods are widely used with the development of environmental protection technologies, and can be directly mineralized or oxidized to improve the biodegradability of pollutants, thereby achieving thorough treatment of the root causes. Common advanced oxidation techniques are: fenton, fenton-like, photocatalytic, electrocatalytic, discharge plasma, and the like.
Dielectric barrier discharge (also called silent discharge) is realized by placing one or more insulating media between a high-voltage electrode and a grounding electrode, blocking a current conduction path in the discharge process, limiting the increase of discharge current, and maintaining the discharge form in a corona discharge state and a streamer discharge state, so that a stable discharge system is obtained. In the discharge process, gas is ionized to form plasma, and a plurality of high-energy active substances are generated, most of the active substances have short existence time, but have strong oxidability and no selectivity, and can decompose refractory organic pollutants, thereby achieving the purification process of sewage. The dielectric barrier discharge has the characteristics of high generation efficiency of active substances, low energy consumption, simple operation, high reaction speed at normal temperature and normal pressure, strong working stability, high power density and the like, and shows important practical value and wide application prospect in environmental pollution treatment.
At present, a multi-type dielectric barrier discharge plasma water treatment reaction device is developed and applied to sewage treatment, but due to the structure of a reactor, sewage with poor fluidity and high viscosity is difficult to directly treat, and a complex pretreatment process is required, so that the overall efficiency is low and the operation cost is increased.
Disclosure of Invention
In view of one or more of the above-identified deficiencies in the prior art, the present invention provides an inclined conveyor dielectric barrier discharge contaminant treatment device.
In order to achieve the above object, the present invention provides an inclined conveyor belt dielectric barrier discharge pollutant treatment device, which is characterized in that: the water inlet tank (1) and the water discharge tank (2) are adjacent and separated by a water tank partition plate (10), a water inlet (3) of the water inlet tank (1) is connected with a water inlet pipe, and a water discharge port (4) of the water discharge tank (2) is connected with a water discharge pipe; the driving wheel (6) is positioned inside the water inlet tank (1), and the driven wheel (8) is positioned at the upper part of the drainage tank (2); one end of the transmission shaft (5) is connected to the transmission wheel (6), the other end of the transmission shaft penetrates through the shell of the water inlet tank (1) and is connected to the belt pulley (14), and the belt pulley (14) is externally connected with a motor through a belt to drive the transmission shaft (5) to rotate; one end of the driven shaft (7) is connected to the driven wheel (8), and the other end is fixed on the shell of the drainage box (2); the driving wheel (6) and the driven wheel (8) respectively form two ends of a conveying belt (9), and the inclined conveying belt (9) can convey sewage to the drainage tank (2) from the water inlet tank (1) in one direction through the driving of the transmission shaft (5); the insulating medium (11) is positioned above the conveyor belt (9) and is parallel to the conveyor belt, the high-voltage electrode (12) is positioned on the insulating medium (11) and is tightly attached to the insulating medium, one end of the high-voltage lead (13) is connected to the high-voltage electrode (12), and the other end of the high-voltage lead is connected to an external high-voltage power supply.
Adopt above-mentioned scheme, at the during operation, sewage enters into water tank (1) through water inlet (3), the inlet tube adopts metal material and ground connection, after sewage reachd the water level, external motor passes through the belt and drives belt pulley (14) and rotate, thereby drive wheel (6) that make transmission shaft (5) the other end rotate, conveyer belt (9) promote sewage to drainage box (2), open high voltage power supply and make high-voltage electrode (12) circular telegram discharge the sewage on conveyer belt (9) under the barrier effect of insulating medium (11), its working characteristics analysis is as follows:
firstly, due to the arrangement of the conveyor belt (9), the treatment liquid with poor fluidity forms a liquid film on the surface of the conveyor belt (9).
Second, the formation of a plasma via the discharge of the high voltage electrode (12) generates a large amount of active species that are more easily mass-transferred into the treatment liquid because of the large specific surface area of the water film.
Thirdly, spark discharge is avoided due to the fact that the discharge is blocked by the insulating medium (11), uniform and stable plasma is obtained, and the discharge process has the advantages of being short in pulse delay, wide in applicable voltage frequency range, strong in adaptability and the like after being blocked by the insulating medium (11).
Fourthly, because the discharge area is near the water film and is directly contacted with water, the discharge can be timely cooled, and the device can stably operate for a long time.
Furthermore, the conveyor belt (9) can be made of insulating rough materials such as PVC, polytetrafluoroethylene and the like, the inclination angle is 9.7-23.4%, and the edge of the conveyor belt needs to be provided with a protruding structure to prevent liquid from overflowing.
Furthermore, the high-voltage electrode (2-1) is made of cylindrical flaky and meshed conductive materials.
Furthermore, the water inlet tank (1) is grounded, or the water inlet (3) is made of a conductive metal material and grounded, or a grounding electrode is additionally arranged in the water inlet tank (1).
Further, the insulating medium (2-2) can be made of any one of ceramics, quartz glass and polytetrafluoroethylene materials.
Furthermore, the high-voltage lead (13) needs to be made of rigid materials to ensure that the high-voltage electrode (12) and the insulating medium (11) are supported, and meanwhile, an insulating layer with enough thickness needs to be arranged on the outer portion of the high-voltage lead.
The invention has the beneficial effects that:
firstly, due to the arrangement of the conveyor belt (9), the treatment liquid with poor fluidity forms a liquid film on the surface of the conveyor belt (9).
Second, the formation of a plasma via the discharge of the high voltage electrode (12) generates a large amount of active species that are more easily mass-transferred into the treatment liquid because of the large specific surface area of the water film.
Thirdly, spark discharge is avoided due to the fact that the discharge is blocked by the insulating medium (11), uniform and stable plasma is obtained, and the discharge process has the advantages of being short in pulse delay, wide in applicable voltage frequency range, strong in adaptability and the like after being blocked by the insulating medium (11).
Fourthly, because the discharge area is near the water film and is directly contacted with water, the discharge can be timely cooled, and the device can stably operate for a long time.
Fifthly, due to the structural characteristics of the invention, the requirement on the pretreatment of the sewage is low, the range of the treated water quality is flexible, and the invention is suitable for treating the organic polluted sewage with high concentration and low fluidity.
Sixth, the invention can be used for sewage treatment, and can also be used for volatile sewage treatment, realizes the synchronous treatment of sewage and waste gas, and has no selectivity to pollutants and flexible treatment capacity.
Drawings
Fig. 1 is a schematic cross-sectional view of the present invention.
Fig. 2 is a front plan view of the present invention.
Fig. 3 is an external view of the present invention.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
example (b): referring to fig. 1: an inclined conveyor belt dielectric barrier discharge pollutant treatment device is characterized in that: comprises a water inlet tank (1) and a water discharge tank (2);
the water inlet tank (1) and the water discharge tank (2) are adjacent and separated by a water tank partition plate (10), a water inlet (3) of the water inlet tank (1) is connected with a water inlet pipe, and a water discharge port (4) of the water discharge tank (2) is connected with a water discharge pipe;
the driving wheel (6) is positioned inside the water inlet tank (1), and the driven wheel (8) is positioned at the upper part of the drainage tank (2);
one end of the transmission shaft (5) is connected to the transmission wheel (6), the other end of the transmission shaft penetrates through the shell of the water inlet tank (1) and is connected to the belt pulley (14), and the belt pulley (14) is externally connected with a motor through a belt to drive the transmission shaft (5) to rotate;
one end of the driven shaft (7) is connected to the driven wheel (8), and the other end is fixed on the shell of the drainage box (2);
the driving wheel (6) and the driven wheel (8) respectively form two ends of a conveying belt (9), and the inclined conveying belt (9) can convey sewage to the drainage tank (2) from the water inlet tank (1) in one direction through the driving of the transmission shaft (5);
the insulating medium (11) is positioned above the conveyor belt (9) and is parallel to the conveyor belt, the high-voltage electrode (12) is positioned on the insulating medium (11) and is tightly attached to the insulating medium, one end of the high-voltage lead (13) is connected to the high-voltage electrode (12), and the other end of the high-voltage lead is connected to an external high-voltage power supply.
Furthermore, the conveyor belt (9) can be made of insulating rough materials such as PVC, polytetrafluoroethylene and the like, the inclination angle is 9.7-23.4%, and the edge of the conveyor belt needs to be provided with a protruding structure to prevent liquid from overflowing.
Furthermore, the high-voltage electrode (2-1) is made of cylindrical flaky and meshed conductive materials.
Furthermore, the water inlet tank (1) is grounded, or the water inlet (3) is made of a conductive metal material and grounded, or a grounding electrode is additionally arranged in the water inlet tank (1).
Further, the insulating medium (2-2) can be made of any one of ceramics, quartz glass and polytetrafluoroethylene materials.
Furthermore, the high-voltage lead (13) needs to be made of rigid materials to ensure that the high-voltage electrode (12) and the insulating medium (11) are supported, and meanwhile, an insulating layer with enough thickness needs to be arranged on the outer portion of the high-voltage lead.
In addition, a water supply device can be arranged in front of the water inlet pipe (1), and the belt pulley (9) can be connected with a motor through a belt.
When the device works, the viscosity of high-concentration organic pollutant sewage reaches 15200cP, the sewage enters the water inlet tank (1) through the water inlet (3), the water inlet pipe is made of metal and is grounded, after the sewage reaches a certain water level, the external motor drives the belt pulley (14) to rotate through the belt, so that the driving wheel (6) at the other end of the transmission shaft (5) rotates, the motor is adjusted to enable the rotating speed of the driving wheel (9) to be 2r/min, so that the conveying belt (9) is driven to rotate, the inclination angle of the conveying belt (9) is 2.34 per mill, the conveying belt (9) lifts the sewage to the water drainage tank (2), the high-frequency alternating-current high-voltage power supply is switched on to enable the high-voltage electrode (12) to be electrified, and the sewage on the conveying belt (9:
firstly, due to the arrangement of the conveyor belt (9), the treatment liquid with poor fluidity forms a liquid film on the surface of the conveyor belt (9).
Second, the formation of a plasma via the discharge of the high voltage electrode (12) generates a large amount of active species that are more easily mass-transferred into the treatment liquid because of the large specific surface area of the water film.
Thirdly, spark discharge is avoided due to the fact that the discharge is blocked by the insulating medium (11), uniform and stable plasma is obtained, and the discharge process has the advantages of being short in pulse delay, wide in applicable voltage frequency range, strong in adaptability and the like after being blocked by the insulating medium (11).
Fourthly, because the discharge area is near the water film and is directly contacted with water, the discharge can be timely cooled, and the device can stably operate for a long time.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (6)
1. The invention discloses a dielectric barrier discharge pollutant treatment device for an inclined conveyor belt, which is characterized in that: comprises a water inlet tank (1) and a water discharge tank (2);
the water inlet tank (1) and the water discharge tank (2) are adjacent and separated by a water tank partition plate (10), a water inlet (3) of the water inlet tank (1) is connected with a water inlet pipe, and a water discharge port (4) of the water discharge tank (2) is connected with a water discharge pipe;
the driving wheel (6) is positioned inside the water inlet tank (1), and the driven wheel (8) is positioned at the upper part of the drainage tank (2);
one end of the transmission shaft (5) is connected to the transmission wheel (6), the other end of the transmission shaft penetrates through the shell of the water inlet tank (1) and is connected to the belt pulley (14), and the belt pulley (14) is externally connected with a motor through a belt to drive the transmission shaft (5) to rotate;
one end of the driven shaft (7) is connected to the driven wheel (8), and the other end is fixed on the shell of the drainage box (2);
the driving wheel (6) and the driven wheel (8) respectively form two ends of a conveying belt (9), and the inclined conveying belt (9) can convey sewage to the drainage tank (2) from the water inlet tank (1) in one direction through the driving of the transmission shaft (5);
the insulating medium (11) is positioned above the conveyor belt (9) and is parallel to the conveyor belt, the high-voltage electrode (12) is positioned on the insulating medium (11) and is tightly attached to the insulating medium, one end of the high-voltage lead (13) is connected to the high-voltage electrode (12), and the other end of the high-voltage lead is connected to an external high-voltage power supply.
2. The inclined conveyor belt dielectric barrier discharge contaminant treatment apparatus of claim 1, wherein: the conveying belt (9) can be made of insulating rough materials such as PVC, polytetrafluoroethylene and the like, the inclination angle of the conveying belt is 9.7-23.4 per mill, and the edge of the conveying belt is provided with a protruding structure to prevent liquid from overflowing.
3. The inclined conveyor belt dielectric barrier discharge contaminant treatment apparatus of claim 1, wherein: the high-voltage electrode (12) is made of cylindrical flaky and meshed conductive materials.
4. The inclined conveyor belt dielectric barrier discharge contaminant treatment apparatus of claim 1, wherein: the water inlet tank (1) is grounded, or the water inlet (3) is made of a conductive metal material and grounded, or a grounding electrode is additionally arranged in the water inlet tank (1).
5. The inclined conveyor belt dielectric barrier discharge contaminant treatment apparatus of claim 1, wherein: the insulating medium (11) can be made of any one of ceramics, quartz glass and polytetrafluoroethylene materials.
6. The inclined conveyor belt dielectric barrier discharge contaminant treatment apparatus of claim 1, wherein: the high-voltage lead (13) needs to be made of rigid materials to ensure that the high-voltage electrode (12) and the insulating medium (11) are supported, and meanwhile, an insulating layer with enough thickness needs to be arranged outside.
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| CN202010426556.2A CN111559788B (en) | 2020-05-19 | 2020-05-19 | Inclined conveyor belt dielectric barrier discharge pollutant treatment device |
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| CN202010426556.2A CN111559788B (en) | 2020-05-19 | 2020-05-19 | Inclined conveyor belt dielectric barrier discharge pollutant treatment device |
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| CN111559788B CN111559788B (en) | 2023-06-23 |
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