CN210214890U - Electrocatalytic oxidation device for treating high-concentration wastewater - Google Patents

Abstract

The utility model discloses an handle electrocatalytic oxidation device of high concentration waste water, it includes the casing, be equipped with a plurality of consecutive electrocatalytic oxidation reaction tanks in the casing, electrocatalytic oxidation reaction tank includes negative pole and anodal, and the higher authority of negative pole and the higher authority of anodal are equipped with the plate electrode, is equipped with the PP board below the negative pole and below the anodal, and negative pole and anodal are connected with a graphite cake through an electric wire respectively, and one side of casing is equipped with the inlet tube, and the opposite side of casing is equipped with overflow hole and clean water tank, and the below of graphite cake is equipped with the PP backup pad, and the below of PP backup pad is equipped with a plurality of aeration dishes, and the opposite side of clean water tank is equipped with the outlet pipe. The utility model has the advantages that: ozone is input into wastewater through the disc type microporous aerator which is arranged in a grading way, so that insufficient contact of the area of air and water is avoided, the influence of the size of bubbles on the air and water mixing effect is improved, and the utilization efficiency of ozone in water is greatly improved.

Description

Electrocatalytic oxidation device for treating high-concentration wastewater

Technical Field

The utility model relates to a water treatment device, in particular to an electrocatalytic oxidation device for treating high-concentration wastewater.

Background

Heavy industry is one of the sources of economic development in China, but high pollution and high discharge caused by the heavy industry are also the pain points of relevant departments in heavy industry construction, and especially the discharge of high-concentration wastewater has the characteristics of complex components and difficult degradation, so that the sewage treatment cost is increased, and the effluent quality is not ideal. The application of the electrocatalytic oxidation technology can well and quickly degrade high-concentration wastewater discharged by related industrial enterprises, and can reach the national drainage process standard. The discharged water can be well applied, and good help is provided for garden landscape of urban afforestation, water for municipal facilities and the like.

At present, in practical application, electrocatalytic oxidation has a series of problems: firstly, noble metals are expensive as electrode materials, cannot be used in large quantities, and select appropriate electrode materials to accelerate the electrode reaction, thus requiring urgent solution. Secondly, the existing reaction device adopts a large-volume reaction tank to install a plurality of groups of electrodes to work simultaneously, which causes overlong hydraulic retention time and low treatment effect and treatment efficiency. Thirdly, the existing electrocatalytic oxidation reaction device has low utilization rate of the active surface layer of the anode plate. Fourthly, the existing reaction device has single water inlet and distribution equipment form, and wastewater is easy to form hydraulic short flow or dead angle in the reaction device, thereby having the effect of treatment.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing an electrocatalytic oxidation device for treating high-concentration wastewater.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides an handle electrocatalytic oxidation device of high concentration waste water, its characterized in that, it includes the casing, be equipped with a plurality of consecutive electrocatalytic oxidation reaction tanks in the casing, the electrocatalytic oxidation reaction tank includes negative pole and anodal, is equipped with the plate electrode above the negative pole and the anodal, is equipped with PP (polypropylene) board below the negative pole and below the anodal, and negative pole and anodal are connected with a graphite cake through an electric wire respectively, and one side of casing is equipped with the inlet tube, and the opposite side of casing is equipped with overflow hole and clear water case, and the below of graphite cake is equipped with the PP backup pad, and the below of PP backup pad is equipped with a plurality of aeration discs, and the opposite side of clear water case is equipped with the outlet pipe.

Preferably, the aeration disc is in communication with an aeration tube.

Preferably, the electrode plate is a copper plate.

Preferably, the electrocatalytic oxidation reaction tank adopts a graphite plate electrode reaction unit.

Preferably, the shell is a shell filled with composite ceramsite.

Preferably, the number of the water inlet pipes and the number of the overflow holes are three.

Preferably, the aeration disc adopts a disc type microporous aerator.

Preferably, the electrode plate is a semiconductor-graphite composite material.

The utility model discloses an actively advance the effect and lie in: ozone is input into wastewater through the disc type microporous aerator which is arranged in a grading way, so that insufficient contact of the area of air and water is avoided, the influence of the size of bubbles on the air and water mixing effect is improved, and the utilization efficiency of ozone in water is greatly improved. The utility model adopts a circulating electrolysis scheme, and the wastewater circulates ceaselessly in a circulating storage tank and an electrocatalytic oxidation device so as to ensure that the electrolytic effect reaches design parameters.

Drawings

FIG. 1 is a schematic structural view of the electrocatalytic oxidation apparatus for treating high-concentration wastewater of the present invention.

In the figure: the device comprises a copper plate 1, a shell 2, a negative electrode 3, a positive electrode 4, an electrode plate 5, an electric wire 6, a PP plate 7, an overflow hole 8, a water inlet pipe 9, a graphite plate 10, ceramsite 11, a clear water tank 12, a PP supporting plate 13, an aeration pipe 14, an aeration disc 15 and a water outlet pipe 16.

Detailed Description

The following provides a preferred embodiment of the present invention with reference to the accompanying drawings to explain the technical solutions of the present invention in detail.

As shown in fig. 1, the utility model discloses handle electrocatalytic oxidation device of high concentration waste water includes casing 2, be equipped with a plurality of consecutive electrocatalytic oxidation reaction tanks in the casing, electrocatalytic oxidation reaction tank includes negative pole 3 and anodal 4, and the higher authority of negative pole 3 and the higher authority of anodal 4 are equipped with plate electrode 5, are equipped with PP (polypropylene) board 7 below negative pole 3 and below anodal 4, and negative pole 3 and anodal 4 are connected with a graphite cake 10 through an electric wire 6 respectively, and one side of casing 2 is equipped with inlet tube 9, and the opposite side of casing 2 is equipped with overflow hole 8 and clear water tank 12, and the below of graphite cake 10 is equipped with PP backup pad 13, and the below of PP backup pad 13 is equipped with a plurality of aeration dish 15, and the opposite side of clear water tank 12 is equipped with outlet pipe 16.

The aeration disc 15 is in communication with an aeration pipe 14, which facilitates the supply of air to the aeration disc.

The electrode plate 5 can adopt the copper plate 1, thereby reducing the cost.

The electrocatalytic oxidation reaction tank adopts a graphite plate electrode reaction unit, is high-temperature resistant and corrosion resistant, and can reduce the cost.

The shell is a shell filled with the composite ceramsite 11, the composite ceramsite is a catalyst carrier, and the catalyst has the advantages of low density, high cylinder pressure strength, high porosity, high softening coefficient, good frost resistance, shock resistance and the like, and the hydrogen peroxide solution with 20 percent of active component solution immersed in the catalyst can effectively increase the generation of hydroxyl radicals. Under the condition of normal temperature and pressure, the electrochemical principle is applied to realize the rapid generation of hydroxyl free radical OH active group, toxic and harmful substances in the sewage are subjected to direct electrochemical reaction on an electrode and a composite catalyst filler through direct oxidation and indirect oxidation, and organic substances in the sewage are thoroughly oxidized into carbon dioxide and water by utilizing strong oxidizing substances such as OH free radical and the like generated under the action of an electric field.

The quantity of inlet tube 16 and the quantity of overflow hole 8 all are three groups, and three groups are intake simultaneously, and the water inlet height is the same, and the clear water tank is reached through three overflow holes to the play water mode, and unified discharge has changed traditional single formula mode of intaking.

The aeration disc 15 adopts a disc type microporous aerator which diffuses air in high-concentration wastewater in a micro-bubble mode, so that on one hand, the composite ceramsite can be washed, and on the other hand, the reaction rate is increased.

The electrode plate is made of a semiconductor-graphite composite material, and the conductivity of current is improved.

The utility model discloses handle the electric catalytic oxidation device of high concentration waste water's working process as follows: pretreating high-concentration wastewater, and adjusting the pH value; then inputting the wastewater into an electrocatalytic oxidation box for advanced oxidation treatment, wherein the filler is composite ceramsite; adding 20% hydrogen peroxide solution into each reaction unit, and intermittently feeding water for 10min, electrolyzing for 20min, and aerating for 5 min. And (3) conveying the effluent of the electrocatalytic oxidation box to a circulating tank, and when the quality of the effluent does not meet the requirement, conveying the water in the circulating tank to the electrocatalytic oxidation box to further oxidize and degrade organic matters, so that the effluent is finally discharged after reaching the standard. The utility model discloses handle the electric catalytic oxidation device of high concentration waste water can adopt one-level ozone catalytic oxidation jar and second grade ozone catalytic oxidation jar, and circulation treatment coal chemical industry waste water improves the utilization ratio of ozone between one-level ozone catalytic oxidation jar and the second grade ozone catalytic oxidation jar. Ozone is input into wastewater through the disc type microporous aerator which is arranged in a grading way, so that insufficient contact of the area of air and water is avoided, the influence of the size of bubbles on the air and water mixing effect is improved, and the utilization efficiency of ozone in water is greatly improved. The utility model adopts a circulating electrolysis scheme, and the wastewater circulates ceaselessly in a circulating storage tank and an electrocatalytic oxidation device so as to ensure that the electrolytic effect reaches design parameters. Depending on the wastewater, a pilot test is required before design to determine the operating and capital costs of wastewater treatment.

The above-mentioned embodiments further explain the technical problems, technical solutions and advantages of the present invention in detail, it should be understood that the above-mentioned embodiments are only examples of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (8)

1. An electrocatalytic oxidation device for treating high-concentration wastewater is characterized by comprising a shell (2), the casing is internally provided with a plurality of sequentially connected electrocatalytic oxidation reaction tanks, each electrocatalytic oxidation reaction tank comprises a negative electrode (3) and a positive electrode (4), the upper surface of each negative electrode (3) and the upper surface of each positive electrode (4) are provided with an electrode plate (5), the lower surfaces of the negative electrodes (3) and the lower surfaces of the positive electrodes (4) are provided with PP plates (7), the negative electrodes (3) and the positive electrodes (4) are respectively connected with a graphite plate (10) through an electric wire (6), one side of the casing (2) is provided with a water inlet pipe (9), the other side of the casing (2) is provided with an overflow hole (8) and a clear water tank (12), the lower surface of the graphite plate (10) is provided with a PP supporting plate (13), the lower surface of the PP supporting plate (13) is provided with a plurality of aeration discs (15), and the other side.

2. An electrocatalytic oxidation apparatus for treating high concentration wastewater as set forth in claim 1, wherein said aeration tray (15) is in communication with an aeration pipe (14).

3. An electrocatalytic oxidation apparatus for treating high concentration wastewater as set forth in claim 1, wherein said electrode plate (5) employs a copper plate (1).

4. The electrocatalytic oxidation apparatus for treating high concentration wastewater as set forth in claim 1, wherein said electrocatalytic oxidation reaction tank employs a graphite plate electrode reaction unit.

5. The electrocatalytic oxidation apparatus for treating high concentration wastewater as set forth in claim 1, wherein said housing is a housing containing composite ceramsite (11).

6. An electrocatalytic oxidation apparatus for treating high concentration wastewater as set forth in claim 1, wherein the number of said inlet pipes (9) and the number of said overflow holes (8) are three groups.

7. An electrocatalytic oxidation apparatus for treating high concentration wastewater as set forth in claim 1, wherein said aeration tray (15) employs a tray-type micro-porous aerator.

8. An electrocatalytic oxidation apparatus for treating high concentration wastewater as set forth in claim 1, wherein said electrode plate (5) is a semiconductor-graphite composite material.

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