CN212609709U - Electrocatalytic oxidation reactor for treating high-hardness high-organic matter high-salt wastewater - Google Patents
Electrocatalytic oxidation reactor for treating high-hardness high-organic matter high-salt wastewater Download PDFInfo
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- CN212609709U CN212609709U CN202021586711.9U CN202021586711U CN212609709U CN 212609709 U CN212609709 U CN 212609709U CN 202021586711 U CN202021586711 U CN 202021586711U CN 212609709 U CN212609709 U CN 212609709U
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Abstract
The utility model discloses a handle electrocatalytic oxidation reactor of high organic matter high salt waste water of high rigidity, including the reaction tank, be equipped with negative plate and graininess anode particle electrode in the reaction tank, be equipped with anion exchange membrane in the reaction tank, anion exchange membrane will negative pole district and positive pole district are split into to the reaction tank, the negative plate sets up in the negative pole district, the anode particle electrode sets up in the positive pole district. This electrocatalytic oxidation reactor sets up anion exchange membrane in the reaction tank, cuts apart the reaction tank into negative pole district and positive pole district, places pending waste water in the positive pole district, because there is anion exchange membrane, the easy scale deposit ion in the waste water can't see through anion exchange membrane entering negative pole district, consequently can not produce the dirty object on the negative pole board, sets up graininess anode particle electrode and catalysis filler in the positive pole district, can extend the positive pole board region, can increase the specific surface area of positive pole, improves reaction rate, also can prevent the scale deposit of negative pole board surface to a certain extent.
Description
Technical Field
The utility model relates to a waste water electrocatalytic oxidation treatment device, in particular to a novel electrocatalytic oxidation reactor for high-hardness high-organic matter waste water.
Background
With the increasing strictness of the environmental protection requirements, the treatment of high-salt organic wastewater becomes a difficult point in the environmental protection field. At present, the organic matter degradation in the high-salt system usually adopts an advanced oxidation method, including an ozone oxidation technology, an electrocatalytic oxidation technology, a Fenton oxidation technology, a wet oxidation technology and the like. The Fenton oxidation method has the problem of large mud yield, so that the solid waste treatment cost is high; the ozone oxidation technology needs to provide an oxygen source, the adding amount of ozone to a high-concentration organic system is large, and the problems of tail gas treatment and the like need to be considered; the wet oxidation method needs high temperature and high pressure, has high cost and potential safety hazard in the use process, and does not have the feasibility of large-scale popularization and application.
The electrocatalytic oxidation technology is one of the hot spots of research in recent years, the traditional two-dimensional electrode has small effective reaction area and low current efficiency, and limits the treatment capacity. Compared with the traditional two-dimensional electrode reactor, the three-dimensional electrode reactor has the characteristics of large electrode surface area, high mass transfer efficiency and the like, and greatly improves the electrolysis efficiency. In the practical application process, if ions which are easy to scale such as calcium, magnesium, barium, strontium and the like exist in the wastewater, the ions are easy to scale on the cathode plate side in the continuous operation process, along with the accumulation of scales, the active surface of the cathode reaction is reduced, the current density is reduced, and the integral treatment effect is influenced.
The patent (publication No. CN 203999067U) provides a three-dimensional electrocatalytic oxidation reactor with an expanded cathode or anode, which improves the oxidation effect by purposefully enlarging an oxidation zone and a reduction zone; the patent (CN 102992455A) provides a novel three-dimensional electrode device for non-biodegradable wastewater, iron-carbon micro-electrolysis filler is adopted, cathode plates and anode plates are arranged alternately, the removal rate of COD and chromaticity of the non-biodegradable wastewater is high, but the iron-carbon filler can generate a large sludge production amount; the patent (CN 106365258A) provides a device for three-dimensional electrode catalytic oxidation of high-salt-content and high-COD wastewater, and adopts staggered arrangement of cathode and anode plates, and tourmaline powder is filled between the cathode and anode plates, so that the reaction residence time can be reduced. However, the technical scheme can not effectively solve the problem that the cathode plate is easy to scale, and how to solve the problem that the cathode plate is easy to scale also becomes a technical problem which needs to be solved urgently in the industry.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects in the prior art, the utility model aims to provide a novel electrocatalytic oxidation reactor which can effectively solve the problem of easy scaling of a cathode plate in high-hardness high-organic-matter high-salt wastewater.
The utility model provides a handle electrocatalytic oxidation reactor of high organic matter high salt waste water of high rigidity, includes the reaction tank, be equipped with negative plate and graininess anode particle electrode in the reaction tank, be equipped with anion exchange membrane in the reaction tank, anion exchange membrane will the reaction tank is cut apart into negative pole district and positive pole district, the negative plate sets up in the negative pole district, the anode particle electrode sets up in the positive pole district.
Preferably, an anode mesh enclosure is arranged in the anode region, and the anode particle electrode is arranged in the anode mesh enclosure.
Preferably, the anode particle electrode is doped with a catalyst filler.
Preferably, the catalyst filler is a catalyst filler which takes active alumina as a carrier and loads Mn, Fe, Co or Ni as transition metal ions.
Preferably, the anode mesh enclosure and the anode particle electrode are made of titanium-coated noble metal.
Preferably, the cathode plate and the anode mesh enclosure are respectively arranged at two ends of the reaction tank.
Preferably, the cathode plate is a stainless steel plate or a graphite plate.
The technical scheme has the following beneficial effects: this electrocatalytic oxidation reactor sets up anion exchange membrane in the reaction tank, cuts apart the reaction tank into negative pole district and positive pole district, places pending waste water in the positive pole district, because there is anion exchange membrane, the easy scale deposit ion in the waste water can't see through anion exchange membrane entering negative pole district, consequently can not produce the dirty object on the negative pole board again, sets up graininess anode particle electrode and catalysis filler in the positive pole district, can extend the positive pole board region, can increase the specific surface area of positive pole, improves reaction rate, also can prevent the scale deposit of negative pole board surface to a certain extent.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Element number description: 1. a container housing; 2. a cathode plate; 3. an anion exchange membrane; 4. an anode mesh enclosure; 5. an anode particle electrode; 6. a catalyst filler; 7. a cathode region; 8. an anode region.
Detailed Description
The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the invention. One skilled in the relevant art will recognize, however, that the invention may be practiced without one or more of the specific details, or with other methods, components, devices, steps, and so forth. In other instances, well-known technical solutions have not been shown or described in detail to avoid obscuring aspects of the present invention.
As shown in figure 1, the patent discloses an electrocatalytic oxidation reactor for treating high-hardness high-organic matter high-salt wastewater, which comprises a container shell 1, wherein a reaction tank for wastewater treatment is formed in the container shell 1, an anion exchange membrane 3 is arranged in the reaction tank, the reaction tank is divided into a cathode zone 7 and an anode zone 8 by the anion exchange membrane 3, a cathode plate 1 is arranged in the cathode zone 7, and the cathode plate 1 is a stainless steel plate or a graphite plate. In the anode region, a granular anode particle electrode 5 is provided. During the reaction, sodium chloride is placed in the cathode region 7 as an electrode solution, and wastewater to be treated is continuously introduced into the anode region 8; since scale-prone ions in the anode region 8 cannot penetrate the anion exchange membrane into the cathode region 7, no scale is produced on the cathode plate 1.
In a preferred embodiment, an anode mesh 4 is provided in the anode region 8, the anode particle electrode 5 is mounted in the anode mesh 4, and the cathode plate 1 and the anode mesh 4 are provided at both ends of the reaction tank, respectively. Therefore, the reaction tank is convenient to clean on the premise of not influencing the reaction speed.
In a preferred embodiment, the anode particle electrode 5 is further doped with a catalyst filler 6, and in one embodiment, the catalyst filler is a catalyst filler in which active alumina is used as a carrier and Mn, Fe, Co, or Ni is supported as a transition metal ion. By adopting a mode that the particle electrode and the catalytic filler are arranged in the anode mesh enclosure, the specific surface area of the anode can be increased, the generation amount of hydroxyl radicals can be increased, and the organic matter degradation efficiency can be improved.
As a preferred embodiment, the surfaces of the anode mesh 4 and the anode particle electrode 5 may be coated with a titanium layer, which can further improve the efficiency of degrading organic substances, thereby further preventing the surface of the cathode plate 1 from scaling.
This electrocatalytic oxidation reactor sets up anion exchange membrane in the reaction tank, cuts apart the reaction tank into negative pole district and positive pole district, places pending waste water in the positive pole district, because there is anion exchange membrane, the easy scale deposit ion in the waste water can't see through anion exchange membrane entering negative pole district, consequently can not produce the dirty object on the negative plate again, sets up graininess anode particle electrode and catalysis filler in the positive pole district, can extend the positive plate region, and the specific surface area of increase positive pole improves reaction rate, also can prevent the scale deposit on negative plate surface to a certain extent.
Adopt the utility model discloses the quality of water of intaking that the electric catalytic oxidation reactor carried out processing to shale gas extraction water: the conductivity is 28mS/cm, the chloride ion content is 12g/L, the total hardness is 500mg/L, and the COD is 2600 mg/L. The electric catalytic oxidation reactor is adopted, and partial parameters are as follows: the concentration of the polar liquid is 2-5%, the current density is 5-40 mA/cm2, and the reaction volume ratio of the anode region to the cathode region is 2-5 times. COD after treatment is reduced to below 200mg/L, no obvious scale formation is seen on the surface of the cathode plate after continuous operation, and the current density is not obviously reduced.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (7)
1. The utility model provides a handle electrocatalytic oxidation reactor of high organic matter high salt waste water of high rigidity, includes the reaction tank, be equipped with negative plate and graininess anode particle electrode in the reaction tank, its characterized in that: an anion exchange membrane is arranged in the reaction tank, the anion exchange membrane divides the reaction tank into a cathode area and an anode area, the cathode plate is arranged in the cathode area, and the anode particle electrode is arranged in the anode area.
2. The electrocatalytic oxidation reactor for treating high-hardness high-organic high-salt wastewater as set forth in claim 1, wherein: an anode mesh enclosure is arranged in the anode area, and the anode particle electrode is arranged in the anode mesh enclosure.
3. The electrocatalytic oxidation reactor for treating high-hardness high-organic high-salt wastewater as set forth in claim 1, wherein: the anode particle electrode is doped with a catalyst filler.
4. The electrocatalytic oxidation reactor for treating high-hardness high-organic high-salt wastewater as set forth in claim 3, wherein: the catalyst filler is a catalyst filler which takes active alumina as a carrier and loads Mn, Fe, Co or Ni as transition metal ions.
5. The electrocatalytic oxidation reactor for treating high-hardness high-organic high-salt wastewater as set forth in claim 2, wherein: the anode mesh enclosure and the anode particle electrode are made of titanium-coated noble metal materials.
6. The electrocatalytic oxidation reactor for treating high-hardness high-organic high-salt wastewater as set forth in claim 2, wherein: the negative plate and the anode mesh enclosure are respectively arranged at two ends of the reaction tank.
7. The electrocatalytic oxidation reactor for treating high-hardness high-organic high-salt wastewater as set forth in claim 1, wherein: the cathode plate is a stainless steel plate or a graphite plate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021586711.9U CN212609709U (en) | 2020-08-03 | 2020-08-03 | Electrocatalytic oxidation reactor for treating high-hardness high-organic matter high-salt wastewater |
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| CN202021586711.9U CN212609709U (en) | 2020-08-03 | 2020-08-03 | Electrocatalytic oxidation reactor for treating high-hardness high-organic matter high-salt wastewater |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113233551A (en) * | 2021-05-20 | 2021-08-10 | 燕山大学 | Preparation method of catalytic reduction nitrate electrode and resource utilization technology thereof |
| CN115976578A (en) * | 2022-12-23 | 2023-04-18 | 中国矿业大学 | Cathode film packed bed electrode reactor for wet recovery of metal and recovery method thereof |
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2020
- 2020-08-03 CN CN202021586711.9U patent/CN212609709U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113233551A (en) * | 2021-05-20 | 2021-08-10 | 燕山大学 | Preparation method of catalytic reduction nitrate electrode and resource utilization technology thereof |
| CN113233551B (en) * | 2021-05-20 | 2022-07-01 | 燕山大学 | Preparation method of catalytic reduction nitrate electrode and resource utilization technology thereof |
| CN115976578A (en) * | 2022-12-23 | 2023-04-18 | 中国矿业大学 | Cathode film packed bed electrode reactor for wet recovery of metal and recovery method thereof |
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