CN212740823U

CN212740823U - Plug-flow type electrocatalytic oxidation device

Info

Publication number: CN212740823U
Application number: CN202021187784.0U
Authority: CN
Inventors: 金明波; 撒文龙; 陈虎
Original assignee: Ningxia Beiguo Environemntal Protection Energy Saving Co ltd
Current assignee: Ningxia Beiguo Environemntal Protection Energy Saving Co ltd
Priority date: 2020-06-23
Filing date: 2020-06-23
Publication date: 2021-03-19
Anticipated expiration: 2030-06-23

Abstract

The application discloses plug-flow type electrocatalytic oxidation device, including the reactor, be provided with the negative plate in the reactor, be provided with the anode plate between the adjacent negative plate, the negative plate is fixed in the reactor bottom, the anode plate hangs in the reactor, adjacent negative plate, anode plate are a reacting chamber, be provided with an aeration equipment in every reacting chamber, aeration equipment is located the reacting chamber bottom, aeration equipment is connected with the aeration pump, anode plate, negative plate are connected with the positive negative pole switch of direct current, the reactor both sides are connected with inlet tube, outlet pipe respectively, it has the intake pump to advance water piping connection. This application is through opening the structural bond of difficult degradation, the more cloudy organic matter of toxicity in with waste water under direct current electric field's effect, or break into short chain molecule with long chain molecule to reduce toxicity, improve the biochemical nature, adopt plug-flow type and aeration operation mode, improve catalytic effect.

Description

Plug-flow type electrocatalytic oxidation device

Technical Field

The application relates to catalytic oxidation, in particular to a plug-flow type electrocatalytic oxidation device.

Background

In the prior art, a method combining physicochemical pretreatment and biochemical method is adopted for high-concentration degradation-resistant wastewater, so that pollutants at the pudendum part can be removed. The oxidizing agent used in the conventional physical and chemical pretreatment method is O₃、H₂O₂And NaCLO, but these oxidizing agents have problems such as weak oxidizing ability, relatively negative addition amount, and easy secondary pollution. Therefore, more industrial wastewater is treated by the advanced oxidation method. After the industrial wastewater is treated by the advanced oxidation method, the toxicity, CODCr and BOD5 are reduced to a certain extent, but the wastewater with high salt and high concentration and the toxic and harmful wastewater are difficult to degrade, and the biochemical property of the wastewater is improved, so a plug-flow type electrocatalytic oxidation device needs to be found to solve the problems.

SUMMERY OF THE UTILITY MODEL

The application provides a plug-flow type electrocatalytic oxidation device, which solves the problem that high-salt high-concentration wastewater and toxic and harmful wastewater in the prior art are difficult to treat.

The application provides a plug-flow type electrocatalytic oxidation device, which comprises a reactor, be provided with the negative plate in the reactor, be provided with the anode plate between the adjacent negative plate, the negative plate is fixed in the reactor bottom, the anode plate hangs in the reactor, adjacent negative plate, anode plate are a reacting chamber, be provided with an aeration equipment in every reacting chamber, aeration equipment is located the reacting chamber bottom, aeration equipment is connected with the aeration pump, anode plate, negative plate are connected with the positive negative pole switch of direct current, the reactor both sides are connected with inlet tube, outlet pipe respectively, it has the intake pump to advance water piping connection.

Further, the plug-flow type electrocatalytic oxidation device is characterized in that the cathode plate is a diamond electrode cathode plate, and the anode plate is a titanium plate anode plate.

Further, the plug-flow type electrocatalytic oxidation device is characterized in that the cathode plate is connected with the positive electrode of the direct current positive and negative electrode switcher, and the anode plate is connected with the negative electrode of the direct current positive and negative electrode switcher.

Furthermore, the water outlet pipe of the plug-flow electrocatalytic oxidation device is also connected with a trash removal pipeline.

Furthermore, the plug-flow type electrocatalytic oxidation device is characterized in that the water outlet pipe and the impurity discharging pipeline are respectively provided with a control valve.

According to the technical scheme, the plug-flow type electrocatalytic oxidation device has the advantages that structural bonds of organic matters which are difficult to degrade and have relatively negative toxicity in wastewater are opened under the action of a direct-current electric field, or long-chain molecules are broken into short-chain molecules, so that toxicity is reduced, biochemical property is improved, or the organic matters are directly oxidized into CO2, H2O and the like, the plug-flow type electrocatalytic oxidation device can enable the wastewater to be in full and effective contact with a polar plate by adopting plug-flow type and aeration operation modes, and the catalytic effect is improved. The positive and negative poles of the direct current positive and negative pole switcher are exchanged during operation, so that the function of automatically cleaning the electrodes is achieved, the corrosion loss of the electrode plates is reduced, the service life of the electrode plates is prolonged, and other problems caused by the process of periodically disassembling and washing the electrode plates are avoided.

Drawings

In order to more clearly illustrate the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without any creative effort.

Fig. 1 is a schematic structural diagram of the present application.

Illustration of the drawings:

the device comprises a direct current positive and negative electrode switcher 1, an anode plate 2, a cathode plate 3, a water inlet pump 4, an aeration device 5, an aeration pump 6, a water inlet pipe 7 and a water outlet pipe 8.

Detailed Description

In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

See FIG. 1

According to the technical scheme, the plug-flow type electrocatalytic oxidation device comprises a reactor, cathode plates 3 are arranged in the reactor, anode plates 2 are arranged between the adjacent cathode plates 3, the cathode plates 3 are fixed at the bottom of the reactor, the anode plates 2 are suspended in the reactor, the adjacent cathode plates 3 and the anode plates 2 are reaction chambers, an aeration device 5 is arranged in each reaction chamber, the aeration device 5 is positioned at the bottom of the reaction chamber, the aeration device 5 is connected with an aeration pump 6, the anode plates 2 and the cathode plates 3 are connected with a direct-current positive-negative electrode switcher 1, the two sides of the reactor are respectively connected with a water inlet pipe 7 and a water outlet pipe 8, and the water inlet pipe 7 is connected with a water inlet pump 4.

A plurality of cathode plates 3 are arranged in the reactor, and the anode plates 2 are positioned between the cathode plates 3, namely N anode plates 2 and N +1 cathode plates 3. The cathode plate 3 is fixed at the bottom of the reactor, and the anode plate 2 is suspended in the reactor, namely, the position of water passing through is reserved at the bottom of the anode plate 2. Water enters from the inlet tube 7, because blocked by first negative plate 3, so the water level rises gradually, get into first reaction chamber after not first negative plate 3, then under the promotion of intake pump 4, promote rivers and flow through each reaction chamber in proper order, flow out from outlet pipe 8 at last, in the time of flow through each reaction chamber, negative plate 3, anode plate 2 can adsorb harmful ion in the hand, the structural bond of the organic matter of difficult degradation, the toxicity is great is opened in the waste water under direct current electric field's effect, or break into short chain molecule with long chain molecule, thereby reduce toxicity, improve the biodegradability, or direct oxidation is CO2 and H2O etc.. The operation cost is lower when the high-salinity wastewater is treated, because the high-salinity wastewater has high conductivity and high current efficiency.

The biochemical effluent of a certain chemical plant is taken as a treatment object, the effluent is treated by adopting the plug-flow type electrocatalytic oxidation device after pretreatment, and the COD of the influent water_CrIs about 221.2mg/LOn the right, the conventional method can not degrade the waste water, but the COD of the effluent of the waste water stays for 30min by adopting the device_CrReduce to less than 50 mg/L.

TABLE 1 catalytic Oxidation of effluent COD_Cr

Preferably, the cathode plate 3 is a diamond electrode cathode plate, and the anode plate 2 is a titanium plate anode plate.

Preferably, the cathode plate 3 is connected with the negative electrode of the direct current positive and negative electrode switcher, and the anode plate 2 is connected with the positive electrode of the direct current positive and negative electrode switcher.

Preferably, the water outlet pipe 8 is further connected with a trash discharging pipeline.

In addition, after the device works for a long time, more ions are adsorbed on the cathode plate 3 and the anode plate 2, and the adsorption capacity is reduced by closing the water outlet pipe 8 at a position relatively behind, opening the impurity discharging channel at the front position, and then switching the anode and the cathode of the direct current anode and cathode switcher 1, so that the ions fall off and are discharged from the impurity discharging channel.

Preferably, the water outlet pipe 8 and the impurity discharging pipeline are both provided with control valves.

Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope of the disclosure being indicated by the following claims.

It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The above-described embodiments of the present application do not limit the scope of the present application.

Claims

1. A plug-flow electrocatalytic oxidation device is characterized by comprising a reactor, wherein a negative plate (3) is arranged in the reactor, an anode plate (2) is arranged between the adjacent cathode plates (3), the cathode plates (3) are fixed at the bottom of the reactor, the anode plate (2) is suspended in the reactor, the adjacent cathode plate (3) and anode plate (2) are a reaction chamber, an aeration device (5) is arranged in each reaction chamber, the aeration device (5) is positioned at the bottom of the reaction chamber, the aeration device (5) is connected with an aeration pump (6), the anode plate (2) and the cathode plate (3) are connected with a direct current positive and negative electrode switcher (1), the reactor is characterized in that the two sides of the reactor are respectively connected with a water inlet pipe (7) and a water outlet pipe (8), and the water inlet pipe (7) is connected with a water inlet pump (4).

2. A plug-flow electrocatalytic oxidation apparatus according to claim 1, wherein said cathode plate (3) is a diamond electrode cathode plate and said anode plate (2) is a titanium plate anode plate.

3. The plug-flow type electrocatalytic oxidation apparatus as set forth in claim 1, wherein said cathode plate (3) is connected to the negative electrode of a dc positive-negative electrode switcher, and said anode plate (2) is connected to the positive electrode of the dc positive-negative electrode switcher.

4. A plug-flow electrocatalytic oxidation apparatus as set forth in claim 1, wherein said outlet pipe (8) is further connected with a drainage pipe.

5. A plug-flow electrocatalytic oxidation apparatus as set forth in claim 4, wherein said outlet pipe (8) and said impurity removal pipe are provided with control valves.