CN210973979U

CN210973979U - Waste water treatment device adopting photolysis and electrochemical reaction

Info

Publication number: CN210973979U
Application number: CN201920981533.0U
Authority: CN
Inventors: 包禾欣; 韦君杭
Original assignee: Zhejiang Sen Jing Science And Technology Co ltd
Current assignee: Zhejiang Senjing Biotechnology Co ltd
Priority date: 2019-06-27
Filing date: 2019-06-27
Publication date: 2020-07-10
Anticipated expiration: 2029-06-27

Abstract

The utility model relates to a photodissociation is electrochemical reaction handles effluent plant in coordination. The device comprises at least one group of device body, wherein a plurality of anodes, a plurality of cathodes and a reference electrode are arranged in the device body to form a three-electrode multi-channel electric field, the anodes adopt titanium nets loaded with photocatalysts, the cathodes are the titanium nets with the same area, the anodes and the cathodes are electrically connected with a direct current power supply, the direct current power supply adopts a pulse power supply, and a plurality of ultraviolet lamps are further arranged around the anodes and the cathodes and used for cooperation of photolysis. The utility model has the advantages that: the utility model has the advantages of reasonable design, the installation is used and is maintained conveniently, can divide the characteristics of performance photodissociation in coordination with electrochemical reaction by weight, can form a complete set with other effluent treatment plant and use, satisfies the processing demand of different waste water quality.

Description

Waste water treatment device adopting photolysis and electrochemical reaction

Technical Field

The utility model relates to a effluent treatment plant, specific theory relate to a photodissociation is electrochemical reaction handles effluent treatment plant in coordination.

Background

The photolysis-electrochemical reaction synergistic treatment method mainly has the functions of: reducing COD, decoloring, removing ammonia nitrogen and total nitrogen, and combining the characteristics of electrochemistry and photochemistry. There are four mechanisms of action that can be summarized: 1) direct oxidation reaction; 2) carrying out indirect oxidation reaction; 3) carrying out UV/Fenton oxidation reaction; 4) and carrying out electrocatalytic reduction reaction on the cathode.

1) And direct oxidation reaction of the anode: by utilizing the high oxidation potential of the anode, when organic pollutants and ammonium ions are in contact with the anode, the organic pollutants and the ammonium ions are directly oxidized, and the organic matters with the oxidation potential are reduced and degraded at the cathode. 2) And indirect oxidation reaction: because the landfill leachate contains Cl-ions (salt) with high concentration, the Cl-ions can be used as an ideal electrolyte and can also be used as a medium for generating an oxidant in an electrochemical reaction. OH-, Cl-in water is oxidized at the anode to generate OH, HClO and Cl₂And oxygen in the cathode water is reduced to [ O ]]、H₂O₂And the like, the oxidizing agents oxidize organic matters and ammonia nitrogen in water, and particularly hydroxyl radical OH has extremely strong oxidation potential. 3) UV/Fenton oxidation reaction: under the irradiation of ultraviolet light (254nm), oxidizing agents HClO and H with low oxidation potential energy₂O₂Can be converted into free radicals with high oxidation potential.

HClO+hv→·OH+Cl

H₂O₂+hv→2·OH

4) Cathodic electrocatalytic reduction reaction

Nascent hydrogen [ H ] produced at the cathode]Can reduce oxidative organic matter for degradation, and more importantly can directly reduce nitroso Nitrogen (NO)₂ ^-) And nitrate Nitrogen (NO)₃ ^-) And can inhibit the generation of nitrite nitrogen and nitrate nitrogen in the oxidation process of ammonia nitrogen.

The characteristics of photolysis cooperated with electrochemical reaction:

1) the reaction efficiency is greatly improved by adopting photolysis in cooperation with electrochemical reaction: because of the addition of photolysis, the oxidant with low oxidation potential energy is converted into the free radical with high oxidation potential energy, thereby not only greatly improving the oxidation function of the electrochemical reaction, but also shortening the reaction time and obviously reducing the energy consumption.

2) And the strong reduction of nascent hydrogen H can inhibit the generation of nitroso nitrogen and nitrate nitrogen in the oxidation process of ammonia nitrogen. More than 90-100% of ammonia nitrogen is oxidized into nitrogen and then removed.

3) The electrode is a titanium electrode, is acid-resistant and alkali-resistant and has long service life, and the surface of the anode is covered with a catalyst consisting of noble metal, so that the oxidation function of the anode is enhanced.

4) And the energy consumption is reduced by 1/3-1/2 by adopting a pulse power supply, and the anode passivation phenomenon can be reduced.

In the invention, the electric field is cooperated with the photocatalytic oxidation reaction, and the functions of the electric field and the photocatalytic oxidation reaction are mainly as follows: deep COD reduction, decoloration, peculiar smell removal and sterilization.

The utility model aims at providing a photodissociation is device of electrochemical reaction processing waste water in coordination.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve the not enough of prior art, provide a photodissociation is device of electrochemical reaction processing waste water in coordination.

The utility model provides a technical scheme that its technical problem adopted is:

the utility model provides a photodissociation is device of electrochemical reaction processing waste water in coordination, the device includes at least a set of device body, and this internal a plurality of positive poles and a plurality of negative poles and reference electrode constitution three electrode multichannel electric field that is equipped with of device, and the positive pole adopts the titanium net that has the load photocatalyst, and the negative pole is the titanium net of the same area, and positive pole and negative pole are connected with DC power supply electricity, and DC power supply adopts pulse power supply, still installs a plurality of ultraviolet lamps around positive, the negative pole for photodissociation is in coordination.

Preferably, the device is formed by connecting at least two groups of device bodies in parallel.

Preferably, the areas of the anode and cathode plates are determined according to the volume of the device body.

Preferably, the anode potential is adjusted according to a required current density between the anode and cathode plates, and the anode and cathode plate spacing is adjusted according to the conductivity.

Preferably, the anode and cathode plates are symmetrically arranged on both sides of the reference electrode.

Preferably, the photocatalyst and the titanium mesh are supported in a coating or soaking and drying fixing mode.

More preferably, the photocatalyst and the titanium mesh are loaded in a drying and fixing mode after coating, and the coating amount is 0.2-0.3 g/square centimeter.

More preferably, the photocatalyst and the titanium mesh are loaded in a manner of drying and fixing after soaking, and the soaking time is 20-30 s.

The utility model has the advantages that: the utility model has the advantages of reasonable design, the installation is used and is maintained conveniently, can divide the characteristics of performance photodissociation in coordination with electrochemical reaction by weight, can form a complete set with other effluent treatment plant and use, satisfies the processing demand of different waste water quality.

Drawings

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

In the figure: 1. the device comprises a device body, 2, an anode, 3, a cathode, 4, a reference electrode, 5 and an ultraviolet lamp.

Detailed Description

The technical solution of the present invention is further specifically described below by way of specific embodiments and with reference to the accompanying drawings.

Example (b):

the device for treating wastewater through photolysis-synergetic electrochemical reaction comprises at least one group of device body 1, wherein a plurality of anodes 2, a plurality of cathodes 3 and reference electrodes 4 are arranged in the device body 1 to form a three-electrode multi-channel electric field, the anodes 2 adopt titanium nets loaded with photocatalysts, the cathodes 3 are titanium nets with the same area, the anodes 2 and the cathodes 3 are electrically connected with a direct-current power supply, the direct-current power supply adopts a pulse power supply, and a plurality of ultraviolet lamps 5 are further arranged around the anodes and the cathodes and used for photolysis-synergetic effect.

Specifically, the device is formed by connecting at least two groups of device bodies 1 in parallel.

Further, the areas of the anode plate and the cathode plate are determined according to the volume of the device body.

The utility model discloses in, the 2 potentiometres of positive pole are according to the current density adjustment that anode, negative pole interplate required, and anode, negative pole interplate interval are according to the conductivity adjustment.

In addition, in order to achieve the best effect, the anode and cathode plates are symmetrically arranged on two sides of the reference electrode 4.

Specifically, the photocatalyst and the titanium mesh are loaded in a coating or drying and fixing mode after soaking.

Specifically, the photocatalyst and titanium mesh loading method described in this embodiment is a method of drying and fixing after coating, and the coating amount is 0.2-0.3 g/cm.

The process for loading the catalyst and the titanium mesh comprises the following steps:

s1: fully coating the titanium mesh with a water-based adhesive, taking out the titanium mesh, and naturally drying the titanium mesh in a dust-free environment;

s2: s1, coating photocatalyst on the dried titanium mesh;

s3: after the coating process is finished, drying for 1-1.5h in a medium-temperature drying oven at the temperature of 250-600 ℃;

s4, repeating the steps S2 and S30-N times, wherein N is a natural number more than or equal to 1. The conditions of the dust-free environment in step S1 are: the environmental temperature is less than or equal to 22 ℃, and the environmental humidity is less than or equal to RH 55%.

The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the scope of the claims. Such as: the loading mode of the photocatalyst and the titanium mesh is a mode of drying and fixing after soaking, and the soaking time is 20-30 s.

Claims

1. The device for treating wastewater through photolysis-coordinated electrochemical reaction is characterized by comprising at least one group of device body, wherein a plurality of anodes, a plurality of cathodes and reference electrodes are arranged in the device body to form a three-electrode multi-channel electric field, the anodes adopt titanium nets loaded with photocatalysts, the cathodes are the titanium nets with the same area, the anodes and the cathodes are electrically connected with a direct-current power supply, the direct-current power supply adopts a pulse power supply, and a plurality of ultraviolet lamps are further arranged around the anodes and the cathodes and used for photolysis coordination.

2. The apparatus for wastewater treatment by photolysis in cooperation with electrochemical reaction according to claim 1, wherein said apparatus is composed of at least two sets of apparatus bodies connected in parallel.

3. The apparatus for wastewater treatment by photolysis-cooperative electrochemical reaction according to claim 1 or 2, wherein the areas of the anode plate and the cathode plate are determined according to the volume of the apparatus body.

4. The apparatus for wastewater treatment by photolysis in cooperation with electrochemical reaction according to claim 1 or 2, wherein the anode potential is adjusted according to the required current density between the anode and cathode plates, and the distance between the anode and cathode plates is adjusted according to the electric conductivity.

5. The apparatus for wastewater treatment by photolysis in cooperation with electrochemical reaction according to claim 1 or 2, wherein the anode and cathode plates are symmetrically disposed on both sides of the reference electrode.

6. The apparatus for wastewater treatment by photolysis cooperative electrochemical reaction according to claim 1 or 2, wherein the photocatalyst and the titanium mesh are supported by coating or drying and fixing after soaking.