CN209890305U

CN209890305U - Electrochemical reactor

Info

Publication number: CN209890305U
Application number: CN201920405623.5U
Authority: CN
Inventors: 霍树营
Original assignee: Hebei University
Current assignee: Hebei University
Priority date: 2019-03-28
Filing date: 2019-03-28
Publication date: 2020-01-03
Anticipated expiration: 2029-03-28

Abstract

The utility model discloses an electrochemical reactor, which comprises a water collecting tank, an electrolysis chamber and a water feeder; the water collecting tank, the electrolysis chamber and the water feeder are sequentially arranged from top to bottom, a gas distribution plate is arranged at the bottom end of the water collecting tank, 2N concentric cylindrical electrodes with different inner diameters are arranged in the electrolysis chamber, and a set distance is reserved between every two adjacent cylindrical electrodes; the upper end of the electrolysis chamber is provided with a water outlet, and the lower end of the electrolysis chamber is provided with a first water inlet; the side of the water feeder is provided with a second water inlet, and the bottom of the water feeder is provided with an air inlet. Through the utility model discloses an organic pollutant in the waste water can be got rid of to the electrochemical reactor high-efficiently.

Description

Electrochemical reactor

Technical Field

The utility model relates to a waste water treatment field especially relates to an electrochemical reactor.

Background

The waste water treatment is always a research hotspot, the electrochemical method treats the sewage, has the advantages of no addition of chemical medicines such as oxidant, flocculating agent and the like, small equipment volume, small occupied area, simple and flexible operation and the like, and is called as a green treatment process. The existing similar technology can only be independently applied to the air flotation and the water hardness removal, because the polar plates in the prior art are all plane plate-shaped, the polar plates used in unit volume are more, the utilization rate is not high, the distribution of the treated water flow is not uniform, the treatment effect is not ideal, and more, the high efficiency and the multiple treatment purposes can not be simultaneously exerted; and the traditional electrode surface body is smaller, the unit cell body treatment capacity is small, the current efficiency is low, and especially when the conductivity is low, so that breakthrough progress is difficult to achieve in practice. Aiming at the defect of the traditional electrode, Bickhust proposed the concept of three-dimensional electrode/ternary electrode (three-dimensional-electrode) in the last 60 th century. The three-dimensional electrode is a new type of electrochemical reactor, also called particle electrode or bed electrode. Granular or other chippy working electrode materials are filled between electrodes of a traditional two-dimensional electrolytic cell, and the surface of the filled working electrode materials is charged to become a new level (third level) so as to increase the specific surface area of the electrodes, namely, the polar water ratio, improve the sewage treatment efficiency and reduce the treatment cost. However, the particle electrode is easily polluted by pollutants in the use process of the existing three-dimensional electrode electrolytic reactor, and electrode blockage occurs. Electrode clogging will reduce the efficiency of the process. Therefore, the development of a novel and efficient electrolytic reactor for the treatment of industrial and domestic sewage has important significance for reducing water body pollution, protecting the environment, improving the reuse rate of urban domestic sewage, relieving the situation that urban water supply is increasingly tense and maintaining the sustainable development of urban economy.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an electrochemical reactor can get rid of the organic pollutant in the waste water high-efficiently.

In order to achieve the above object, the utility model provides a following scheme:

an electrochemical reactor comprises a water collecting tank, an electrolysis chamber and a water feeder; the water collecting tank, the electrolysis chamber and the water feeder are sequentially arranged from top to bottom, a gas distribution plate is arranged at the bottom end of the water collecting tank, 2N concentric cylindrical electrodes with different inner diameters are arranged in the electrolysis chamber, and a set distance is reserved between every two adjacent cylindrical electrodes; the upper end of the electrolysis chamber is provided with a water outlet, and the lower end of the electrolysis chamber is provided with a first water inlet; the side of the water feeder is provided with a second water inlet, and the bottom of the water feeder is provided with an air inlet.

Optionally, each of the cylindrical electrodes is a plate-shaped, mesh-shaped or fence-shaped cylindrical electrode.

Optionally, each of the cylindrical electrodes is a metal or a metal oxide or a conductive nonmetal.

Optionally, the water collecting tank is fixedly connected with the electrolysis chamber through a bolt, and the electrolysis chamber is fixedly connected with the water feeder through a bolt.

Optionally, the distance between each two adjacent cylindrical electrodes is set to be 2-5 cm.

Optionally, an air distribution pipe is arranged in the water feeder, air distribution holes are arranged on two sides of the air distribution pipe, and the air distribution holes are used for uniformly distributing air.

Optionally, the gas distribution plate is a porous organic glass sieve plate.

Optionally, the electrolysis chamber is in the shape of a cylinder.

According to the utility model provides a concrete embodiment, the utility model discloses a following technological effect: the utility model provides an electrochemical reactor, which comprises a water collecting tank, an electrolysis chamber and a water feeder; the water collecting tank, the electrolysis chamber and the water feeder are sequentially arranged from top to bottom, a gas distribution plate is arranged at the bottom end of the water collecting tank, 2N concentric cylindrical electrodes with different inner diameters are arranged in the electrolysis chamber, and a set distance is reserved between every two adjacent cylindrical electrodes; the upper end of the electrolysis chamber is provided with a water outlet, and the lower end of the electrolysis chamber is provided with a first water inlet; the side of the water feeder is provided with a second water inlet, and the bottom of the water feeder is provided with an air inlet. Through the utility model discloses an organic pollutant in the waste water can be got rid of to the electrochemical reactor high-efficiently.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a schematic structural composition diagram of an electrochemical reactor according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model aims at providing a through the utility model discloses an organic pollutant in the waste water can be got rid of to the electrochemical reactor high-efficiently.

In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.

An electrochemical reactor comprises a water collecting tank 1, an electrolysis chamber 2 and a water feeder 3; the water collecting tank 1, the electrolysis chamber 2 and the water feeder 3 are sequentially arranged from top to bottom, the bottom end of the water collecting tank 1 is provided with a gas distribution plate 4, 2N concentric cylindrical electrodes 5 with different inner diameters are arranged in the electrolysis chamber 2, and a set distance is reserved between every two adjacent cylindrical electrodes 5; the upper end of the electrolysis chamber 2 is provided with a water outlet 6, and the lower end is provided with a first water inlet 7; the side of the water feeder is provided with a second water inlet 8, and the bottom of the water feeder is provided with an air inlet 9.

Each of the cylindrical electrodes 5 is a plate-like, net-like, or fence-like cylindrical electrode 5. Each of the cylindrical electrodes 5 is a metal, a metal oxide, or a conductive nonmetal. The distance between every two adjacent cylindrical electrodes is set to be 2-5 cm.

The water collecting tank 1 and the electrolysis chamber 2 are fixedly connected through bolts, and the electrolysis chamber 2 and the water feeder 3 are fixedly connected through bolts. The electrolytic chamber 2 takes a cylindrical shape.

The water feeder 3 is internally provided with a gas distribution pipe, and gas distribution holes are arranged on two sides of the gas distribution pipe and used for uniformly distributing gas.

The gas distribution plate 4 is a porous organic glass sieve plate. The peripheral edge extension of gas distribution plate 4 is equipped with 12 ~ 16 bolt holes that are used for connecting. The bottom of the electrolysis chamber 2 is supported by the porous organic glass sieve plate, namely the gas distribution plate 4, the upper part of the distribution chamber is also covered by the porous organic glass sieve plate, the two layers are fixedly connected by bolts, and the middle of the two layers of gas distribution plates is tiled with a screen, so that the screen can be replaced at any time, and the gas permeability is good and the electrolysis efficiency is high. The problem of in the past the gas distribution board fix between electrolysis chamber and water feeder, after the electrolysis reactor operation a period, because the gas distribution board is blockked up by charcoal powder and impurity, thereby influence ventilative and the water permeability influences treatment effect is solved.

The utility model provides an electrochemical reactor has following advantage:

1. the electrode group is composed of concentric cylindrical electrodes, the area of the electrode plate is the smallest in unit volume, and the utilization rate of the electrode plate is the highest;

2. the water flow is uniformly distributed, so that multiple treatment effects can be achieved at the same time;

3. the electrochemical electrolytic chamber is designed into a cylindrical shape, so that the electrochemical electrolytic chamber can be operated under normal pressure and high pressure;

4. the electrode group formed by the cylindrical electrodes can adopt a series connection, parallel connection or series-parallel connection mixed operation mode according to different water treatment media, so that the current efficiency is highest, the energy-saving effect is very obvious, and organic pollutants in wastewater can be efficiently removed.

Specific example 1:

a plurality of concentric cylindrical electrodes a, b, c, d and e with different inner diameters are nested with each other to form an electrode assembly, and the electrode assembly is arranged in the electrolytic chamber 2, thereby forming an electrochemical reactor; the upper end and the lower end of the electrolysis chamber 2 are respectively provided with a water outlet and a water inlet. The electrode is a cylindrical electrode composed of a plate shape, a net shape or a fence shape. The electrode is metal or metal oxide such as titanium-based ruthenium-coated iridium oxide or conductive nonmetal such as graphite, conductive plastic. The tubular electrodes a, c, e are connected to the same DC supply line, and the tubular electrodes b, d are connected to another DC supply line to form a parallel connection. The cylindrical electrodes a, b, c, d and e are arranged in a channel for treating water, and the water flow flows from bottom to top.

After water is supplied to the electrolytic cell 2, when the electrode group is turned on by a DC power supply, the cylindrical electrodes a, c, e are anodes, the cylindrical electrodes b, d are cathodes, and strong electric currents are generated between the electrode pairs a, b and the electrode pairs b, e, and between the electrode pairs e, d and the electrode pairs d, eIn the flow field, the electrodes a, c and e generate anodic oxidation reaction and chlorine, oxygen, ozone and hydroxyl products, the electrodes b and d generate reduction reaction and hydrogen is separated out, the redox reaction of the anode and the cathode and the electrode products can carry out biological and chemical reactions on water, fine broken bubbles generated by the electrodes can carry out flotation action on suspended matters in the water, so that solid particles in the water can quickly achieve solid-liquid separation, the ozone, the hydroxyl and the chlorine can achieve strong oxidative decomposition action on COD organic matters in the water, and simultaneously the strong oxidant and the strong electric field jointly carry out oxidation and killing on bacteria and algae in the water, and the reduction action generated by the cathode can carry out reduction action on Cu in the water²⁺、Ni²⁺、Cr⁶⁺And performing reduction reaction on the metals to obtain metallic nickel, copper and trivalent chromium.

Of course, the connection method of the electrodes to the positive and negative of the dc power supply in this embodiment is not limited to the connection relationship described above, and for example: the electrode a is connected with the positive pole of direct current, the electrode e is connected with the negative pole of direct current, and the electrodes b, c and d are not connected with an external power supply to form series connection. They form electromotive force by means of the induced electric field of the electrodes a, e, so that the same electric field intensity occurs between the electrodes b, c, d. Alternatively, the electrodes a, b, c, d, e may be connected in series-parallel by a hybrid junction method, i.e., the electrodes a, c may be connected to the positive pole of a direct current and the electrode e may be connected to the negative pole of a direct current to form a hybrid junction method, thereby forming a series-parallel connection.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The principle and the implementation of the present invention are explained herein by using specific examples, and the above description of the embodiments is only used to help understand the device and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.

Claims

1. An electrochemical reactor is characterized by comprising a water collecting tank, an electrolysis chamber and a water feeder; the water collecting tank, the electrolysis chamber and the water feeder are sequentially arranged from top to bottom, a gas distribution plate is arranged at the bottom end of the water collecting tank, 2N concentric cylindrical electrodes with different inner diameters are arranged in the electrolysis chamber, and a set distance is reserved between every two adjacent cylindrical electrodes; the upper end of the electrolysis chamber is provided with a water outlet, and the lower end of the electrolysis chamber is provided with a first water inlet; the side of the water feeder is provided with a second water inlet, and the bottom of the water feeder is provided with an air inlet.

2. The electrochemical reactor of claim 1, wherein each of the cylindrical electrodes is a plate-like, or a mesh-like, or a fence-like cylindrical electrode.

3. The electrochemical reactor of claim 2, wherein each of the cylindrical electrodes is a metal or a metal oxide or an electrically conductive non-metal.

4. The electrochemical reactor of claim 1, wherein said water collection sump is bolted to said electrolysis chamber, and said electrolysis chamber is bolted to said water feeder.

5. The electrochemical reactor according to claim 1, wherein a distance between each adjacent cylindrical electrodes is set to 2 to 5 cm.

6. The electrochemical reactor of claim 1, wherein the water feeder is provided with a gas distribution pipe, and gas distribution holes are arranged on two sides of the gas distribution pipe and used for uniformly distributing gas.

7. The electrochemical reactor of claim 1, wherein the gas distribution plate is a porous plexiglass sieve plate.

8. The electrochemical reactor of claim 1, wherein the electrolysis chamber is cylindrical in shape.