CN213924150U

CN213924150U - Mariculture tail water electrochemical treatment device

Info

Publication number: CN213924150U
Application number: CN202022587035.3U
Authority: CN
Inventors: 朱明�
Original assignee: Beijing Teconokang Environmental Technology Co ltd
Current assignee: Beijing Teconokang Environmental Technology Co ltd
Priority date: 2020-11-10
Filing date: 2020-11-10
Publication date: 2021-08-10
Anticipated expiration: 2030-11-10

Abstract

The utility model provides a mariculture tail water electrochemical treatment device, including DC power supply, processing case and electrochemical module, the upper portion of handling the case is connected with the inlet tube, and the bottom is connected with the outlet pipe, electrochemical module includes reaction cylinder, intake chamber, net cloth and anode plate, negative plate and net baffle, the lateral wall of intake chamber seted up with the perforation of the inner chamber intercommunication of handling the case, the anode plate with be close to relatively the anode plate the net baffle the negative plate with be close to relatively the negative plate net baffle and adjacent two all pack between the net baffle and have the adsorption packing, the reaction cylinder is lieing in the position department of net baffle top is connected with the outlet pipe. The seawater culture tail water is sterilized and disinfected by the electrochemical module, so that pollutants can be degraded, a catalyst does not need to be added, secondary pollution or new pollutants are not easy to generate, the treatment period is short, and the treatment effect is relatively good.

Description

Mariculture tail water electrochemical treatment device

Technical Field

The utility model relates to a water treatment device, in particular to a seawater culture tail water electrochemical treatment device.

Background

The seawater industrial aquaculture has high aquaculture density and large feed capacity, the metabolism of cultured animals enriches a large amount of nutrient substances in water, so that good environmental conditions are provided for the propagation and growth of bacteria, if the bacteria are not sterilized and disinfected in time, diseases are easily caused, and a large amount of ammonia nitrogen, nitrite nitrogen and COD contained in the seawater aquaculture tail water can cause serious pollution to the water.

The traditional method for treating the tail water of the mariculture mainly comprises the following steps: physical removal, chemical reduction, biological denitrification, and the like. The physical removal method mainly concentrates or transfers the nitrate, does not really degrade the nitrate, so secondary pollutants are generated and can be more difficult to remove; the chemical reduction method is to reduce nitrate, the reaction condition has higher control requirement in the treatment process, and most chemical methods need to add a catalyst, so that new pollutants can be introduced; the biological denitrification method needs to culture denitrification flora, so the period is long, a large amount of sludge is generated, the subsequent further treatment is needed, and the method has poor effect on removing low-concentration nitrate.

In view of the above, the applicant has made intensive studies to solve the above problems and has made the present invention.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a be difficult for producing secondary pollution or new pollutant, processing cycle is short and the relatively better mariculture tail water electrochemical treatment device of treatment effect.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a mariculture tail water electrochemical treatment device, includes DC power supply, handles the case and at least one places handle incasement electrochemical module, the upper portion of handling the case is connected with the inlet tube, and the bottom is connected with the outlet conduit, electrochemical module includes to alternate in handle incasement a reaction cylinder, set up the intake chamber in reaction cylinder's inner chamber bottom, set up in reaction cylinder's inner chamber and be located the net cloth of intake chamber top and respectively vertically alternate in the reaction cylinder and all be located positive plate, negative plate and grid baffle above the net cloth, the perforation that communicates with the inner chamber of handling the case is seted up to the lateral wall of intake chamber, positive plate and negative plate relative arrangement, each grid baffle from positive plate to negative plate direction equidistant arrangement in proper order, positive plate and the grid baffle that is close to relatively the positive plate, The adsorption type water-saving reactor comprises a cathode plate, grid clapboards relatively close to the cathode plate and two adjacent grid clapboards, wherein adsorption fillers are filled between the cathode plate and the grid clapboards relatively close to the cathode plate, adsorption fillers are filled between the grid clapboards and the two adjacent grid clapboards, the anode of a direct current power supply is electrically connected with the anode plate, the cathode of the direct current power supply is electrically connected with the cathode plate, a water outlet pipe is connected to the position, above the grid clapboards, of the reaction cylinder, and.

As an improvement of the utility model, the electrochemical module still includes the forced draught blower, the air outlet of forced draught blower is connected with the supply-air duct, the supply-air duct down penetrates from last the processing case, and the reaction cylinder is located adsorb filler below the position department with the inner chamber intercommunication of reaction cylinder.

As an improvement of the utility model, the reaction cylinder is a glass fiber cylinder.

As an improvement of the utility model, the adsorption filler is a non-porous filler.

As an improvement of the utility model, be provided with the flowmeter on the outlet pipe.

As an improvement of the utility model, the anode plate is Ti/SnO₂-PdO₂-RuO₂An alloy plate.

Adopt above-mentioned technical scheme, the utility model discloses following beneficial effect has:

1. the seawater culture tail water is sterilized and disinfected by the electrochemical module, so that pollutants can be degraded, a catalyst does not need to be added, secondary pollution or new pollutants are not easy to generate, the treatment period is short, and the treatment effect is relatively good.

2. The electrochemical modules are independent of the treatment box, modular equipment can be realized, the number of the electrochemical modules can be selected according to the treatment capacity, the maintenance is simple, and the application range is wide.

3. By adopting the non-porous filler, the regeneration of the filler is carried out on the surface of the filler, the filler is almost free from consumption, the filler can be automatically regenerated in situ, the ex-situ treatment or regeneration is not needed, and the maintenance cost is relatively low.

4. By selecting Ti/SnO₂-PdO₂-RuO₂The alloy plate is used as an anode, so that the oxygen evolution competition reaction is effectively reduced, the ammonia nitrogen removal rate and the COD removal rate are relatively high, and the treatment effect is relatively good.

Drawings

FIG. 1 is a schematic structural view of the electrochemical treatment device for tail water in seawater cultivation of the present invention.

The corresponding designations in the figures are as follows:

10-a direct current power supply; 20-a treatment box;

21-water inlet pipe; 22-a drain pipe;

30-an electrochemical module; 31-a reaction cylinder;

32-a water inlet chamber; 33-mesh cloth;

34-an anode plate; 35-a cathode plate;

36-a grid spacer; 37-a water outlet pipe;

38-a blower; 39-air supply duct.

Detailed Description

The utility model is further explained by the following specific embodiments:

as shown in fig. 1, the present embodiment provides an electrochemical treatment apparatus for tail water from mariculture, comprising a dc power supply 10, a treatment tank 20, and at least one electrochemical module 30 disposed in the treatment tank 20, wherein the dc power supply 10 can be a conventional power supply, or can be a rectifier to convert commercial power into dc power for use, and will not be described in detail herein.

The treatment tank 20 is a square tank body, the upper part of the treatment tank is connected with a water inlet pipe 21, the water inlet pipe 21 is provided with a water inlet valve, the bottom of the treatment tank 20 is connected with a drain pipe 22 which is mainly used for draining water during maintenance and cleaning, and the drain pipe 22 is provided with a drain valve.

The specific number of the electrochemical modules 30 can be set according to the treatment amount of the tail water to be treated, there are two in this embodiment, taking one of them as an example, the electrochemical modules 30 include a reaction cylinder 31 inserted in the treatment tank 20, a water inlet chamber 32 disposed at the bottom of the inner chamber of the reaction cylinder 31, a mesh cloth 33 disposed in the inner chamber of the reaction cylinder 31 and located above the water inlet chamber 32, and an anode plate 34, a cathode plate 35 and a mesh partition plate 36 vertically inserted in the reaction cylinder 31 and located above the mesh cloth 33, wherein the reaction cylinder 31 is a square cylinder, the inner chamber of which is through up and down, and the bottom of which is in contact with the bottom wall of the inner chamber of the treatment tank 20, preferably, in this embodiment, the reaction cylinder is a glass fiber cylinder.

The inlet chamber 32 is a part of the inner cavity of the reaction cylinder 31, and the sidewall thereof is perforated with a through hole communicating with the inner cavity of the treatment tank 20 so that water in the treatment tank 20 enters the inlet chamber 32 through the through hole. The periphery of the mesh cloth 33 is connected with the inner side wall of the reaction cylinder 31, so that the water in the water inlet chamber 32 is necessarily rectified by the mesh cloth 33 when flowing upwards, the water inlet is ensured to be smooth, large granular substances can be filtered, and the support can be provided for the filler which will be mentioned below.

The anode plate 34 and the cathode plate 35 are oppositely arranged, specifically, the anode plate 34 and the cathode plate 35 are respectively attached to two oppositely arranged side walls of the inner cavity of the glass fiber cylinder, wherein the anode plate 34 is Ti/SnO₂-PdO₂-RuO₂The materials of the alloy plate and the cathode plate 35 can be selected according to actual needs, and Ti/SnO is selected through tests₂-PdO₂-RuO₂The alloy plate is used as an anode, and the mass concentration of the alloy plate to the electrolyte chlorine ions is about 5000-^-1When the high-salt-content wastewater is treated, the current density is 15A dm^-2Under the condition of (1), the electrochemical treatment is about 4 hours, the ammonia in the salt-containing organic wastewater can be basically and completely removed, and the COD value can also reach less than mg.L^-1The national standard of (1). Of course, the positive pole of the dc power source 10 needs to be electrically connected to the positive plate 34, and the negative pole of the dc power source 10 needs to be electrically connected to the negative plate 35 for power supply.

The grid separators 36 are arranged at equal intervals in sequence from the anode plate 34 to the cathode plate 35, and together with the anode plate 34 and the cathode plate 35, divide the chamber of the reaction cylinder 31 above the grid cloth 33 into a plurality of filling grooves, and each filling groove is filled with adsorption filler, namely, the adsorption filler is filled between the anode plate 34 and the grid separator 36 relatively close to the anode plate 34, between the cathode plate 35 and the grid separator 36 relatively close to the cathode plate 35, and between two adjacent grid separators 36. In use, the upper end of each grid diaphragm 36 is at a level lower than the level of the liquid surface within the treatment tank 20. Preferably, the adsorbent packing is non-porous packing so that both the adsorption and regeneration processes are performed on the surface of the packing, although such five-pore adsorbent packing is commercially available.

The reaction cylinder 31 is connected with a water outlet pipe 37 at a position above the grid partition 36, and a water outlet pump is arranged on the water outlet pipe 37. When in use, the connecting position of the water outlet pipe 37 and the reaction cylinder 31 is lower than the horizontal position of the liquid level in the treatment box 20. Preferably, a flow meter (not shown) is further provided on the water outlet pipe 37 to control switching between the electrochemical modules 30 when there are more than two electrochemical modules 30.

In addition, the electrochemical module 30 further includes a blower 38, an air outlet of the blower 38 is connected with an air supply duct 39, and one end of the air supply duct 39, which is not connected with the blower 38, penetrates into the treatment box 20 from top to bottom and is communicated with the inner cavity of the reaction cylinder 31 at a position of the reaction cylinder 31 below the adsorption packing. It should be noted that a plurality of electrochemical modules 30 may share one or a group of blowers 38.

During use, mariculture tail water enters the treatment box 20 through the water inlet pipe 21, then enters the water inlet chamber 32 through the through holes under the action of water pressure, and gradually flows upwards along the inner cavity of the reaction cylinder 31, in the process, the tail water sequentially passes through the mesh 33 and the adsorption filler, pollutants in the water can be enriched on the surface of the adsorption filler, an electrolytic reaction is carried out in the electrochemical module under the condition of low voltage, the pollutants in the water and the pollutants on the surface of the filler are oxidized and decomposed by utilizing the direct oxidation effect of OH between polar plates, compared with the existing electrochemical water treatment device, the pollutant removal efficiency is greatly improved, meanwhile, the pollutants enriched on the surface of the adsorption filler are mineralized, the regeneration and the utilization of the adsorption filler can be realized, and the treated water is sent out through the water outlet pipe 37 through the water outlet pump. In addition, during the use process, the air blower 38 can be used for intermittently performing air cleaning on the adsorption filler according to the actual operation condition so as to prevent the adsorption filler from being compacted and hardened.

The present invention has been described in detail with reference to the accompanying drawings, but the embodiments of the present invention are not limited to the above embodiments, and those skilled in the art can make various modifications to the present invention according to the prior art, and these all belong to the protection scope of the present invention.

Claims

1. The device is characterized by comprising a direct-current power supply, a treatment box and at least one electrochemical module arranged in the treatment box, wherein the upper part of the treatment box is connected with a water inlet pipe, the bottom of the treatment box is connected with a water drain pipe, the electrochemical module comprises a reaction cylinder inserted in the treatment box, a water inlet chamber arranged at the bottom of an inner cavity of the reaction cylinder, a mesh cloth arranged in the inner cavity of the reaction cylinder and positioned above the water inlet chamber, and an anode plate, a cathode plate and a mesh partition plate which are respectively vertically inserted in the reaction cylinder and positioned above the mesh cloth, the side wall of the water inlet chamber is provided with through holes communicated with the inner cavity of the treatment box, the anode plate and the cathode plate are oppositely arranged, the mesh partition plates are sequentially arranged at equal intervals from the anode plate to the cathode plate, and the anode plate and the mesh partition plate relatively close to the anode plate, The adsorption type water-saving reactor comprises a cathode plate, grid clapboards relatively close to the cathode plate and two adjacent grid clapboards, wherein adsorption fillers are filled between the cathode plate and the grid clapboards relatively close to the cathode plate, adsorption fillers are filled between the grid clapboards and the two adjacent grid clapboards, the anode of a direct current power supply is electrically connected with the anode plate, the cathode of the direct current power supply is electrically connected with the cathode plate, a water outlet pipe is connected to the position, above the grid clapboards, of the reaction cylinder, and a water outlet pump is arranged on the water outlet pipe.

2. The electrochemical treatment device for tail water of marine culture as claimed in claim 1, wherein the electrochemical module further comprises a blower, an air outlet of the blower is connected with an air supply pipeline, the air supply pipeline penetrates into the treatment box from top to bottom and is communicated with an inner cavity of the reaction cylinder at a position of the reaction cylinder below the adsorption packing.

3. The electrochemical treatment device of the tail water of the mariculture according to claim 1, wherein the reaction cylinder is a glass fiber cylinder.

4. The electrochemical treatment device for tail water from seawater culture according to claim 1, wherein the adsorption packing is a non-porous packing.

5. The electrochemical treatment device for tail water of marine culture according to claim 1, wherein a flow meter is arranged on the water outlet pipe.

6. The electrochemical treatment device for tail water of marine culture according to any one of claims 1 to 5, wherein the anode plate is Ti/SnO₂-PdO₂-RuO₂An alloy plate.