Ionic membrane electrolysis device for treating heavy salt water

Abstract

The utility model discloses an ionic membrane electrolysis device for treating heavy salt water, which relates to the technical field of water treatment and comprises an electrolysis system, a production system is arranged on one side of the electrolysis system, and a connecting tube bundle and a support tank are connected between the electrolysis system and the production system; one side of the electrolysis system is provided with a power supply cabinet, one side of the power supply cabinet is provided with an electrolytic cell, the other end of the electrolytic cell is provided with an anode circulating tank, one side of the anode circulating tank is provided with a cathode circulating tank, the cathode circulating tank and the anode circulating tank are arranged in parallel, one side of the cathode circulating tank is provided with a fan, and the fan is located between the electrolysis system and the production system. An exhaust pipe is arranged at the top of the fan. According to the ionic membrane electrolysis device for treating the heavy salt water, NaCl in the heavy salt water is purified and electrolyzed by arranging the electrolysis system and the electrolytic bath, and a solution containing chloride ions reacts in the production system to form sodium hypochlorite, so that the cyclic utilization of water resources is realized, and the economic benefits of enterprises are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment, in particular to an ion membrane electrolysis device for treating high-salt water. Background Art

[0002] With the rapid development of industry, the discharge of high-salt wastewater has been increasing, causing serious impacts on the environment. As a product of modern industrialization, high-salt organic wastewater is not only large in quantity but also complex in composition. Improper treatment can easily lead to waste of water resources and environmental pollution. At present, traditional physical and chemical treatment methods for high-salt organic wastewater have disadvantages such as high treatment costs, the need to add additional agents, and easy secondary pollution. In addition, the high salt environment in the wastewater will inhibit the activity of microorganisms, thereby limiting the application and development of microbial methods. Existing treatment technologies have the disadvantages of high cost, high energy consumption, large equipment footprint and difficult maintenance. Microorganisms have poor adaptability, unstable treatment effects and long reaction times.

[0003] To address this issue, high-salinity wastewater treatment and reuse processes are widely used. This process not only reduces wastewater pollution to the environment, but also enables the recycling of water resources and improves the economic benefits of enterprises.

[0004] Therefore, an ion membrane electrolysis device for treating high-salt water is provided. Under the characteristic of good conductivity of high-salt wastewater, membrane electrolysis technology is adopted, which combines the characteristics of traditional brine treatment principles and electrolysis technology, and has the effects of low energy consumption and small environmental harm. Utility Model Content

[0005] Therefore, the purpose of the present invention is to provide an ion membrane electrolysis device for treating high-salt water to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: an ion membrane electrolysis device for treating high-salt water, which includes an electrolysis system, a production system is provided on one side of the electrolysis system, and a connecting tube bundle and a support tank are connected between the electrolysis system and the production system; a power cabinet is provided on one side of the electrolysis system, an electrolytic cell is provided on one side of the power cabinet, an anode circulation cell is provided at the other end of the electrolytic cell, a cathode circulation cell is provided on one side of the anode circulation cell, the cathode circulation cell and the anode circulation cell are arranged in parallel, a fan is provided on one side of the cathode circulation cell, the fan is located between the electrolysis system and the production system, and an exhaust pipe is provided on the top of the fan.

[0007] As a preferred solution of the high-salt water treatment ion membrane electrolysis device described in the utility model, a salt dissolving tank is provided on the other side of the electrolysis system, a water softener is provided on the side of the salt dissolving tank facing the production system, a concentrated brine buffer tank is provided at the other end of the salt dissolving tank, and a regenerated brine tank is provided on the same side of the concentrated brine buffer tank as the water softener.

[0008] As a preferred solution of the high-salt water treatment ion membrane electrolysis device described in the utility model, a hot water tank is provided at the other end of the concentrated brine buffer tank, a desulfurization tower is provided at the other end of the hot water tank, a high-level water tank is vertically provided on the side of the desulfurization tower facing the production system, and the other end of the desulfurization tower is an anode circulation tank and a cathode circulation tank.

[0009] As a preferred solution of the high-salt water treatment ion membrane electrolysis device described in the utility model, wherein: a pair of alkali preparation tanks are provided on one side of the production system, a diluted alkali tank is provided at the other end of the alkali preparation tank, an absorption tower is provided on the other side of the diluted alkali tank, an exhaust tower is provided at one end of the absorption tower, a finished product intermediate tank is provided at the other end of the exhaust tower, and a finished product tank is provided at one end of the finished product intermediate tank; a refrigeration unit is provided on one side of the diluted alkali tank, and the refrigeration unit is located outside the production system.

[0010] As a preferred solution of the high-salt water treatment ion membrane electrolysis device described in the utility model, the bottoms of the alkali preparation tank, the diluted alkali tank, the absorption tower, the tail gas tower, the finished product intermediate tank and the finished product tank are all provided with sewage outlets.

[0011] As a preferred solution of the high-salt water treatment ion membrane electrolysis device described in the utility model, a water inlet is provided on one side of the salt dissolving tank; and an output outlet is provided on one side of the finished product tank.

[0012] As a preferred solution of the high-salt water treatment ion membrane electrolysis device described in the utility model, the electrolytic cell and the diluted alkali tank are connected by a connecting pipe bundle, and the alkali preparation tank and the diluted alkali tank are connected by a connecting pipe bundle.

[0013] Beneficial effects of the utility model:

[0014] 1. The utility model provides an ion membrane electrolysis device for treating high-salt water. By setting up an electrolysis system and an electrolytic cell, NaCl in the high-salt water is purified and electrolyzed, and the chloride ion solution is reacted in the production system to form sodium hypochlorite, thereby realizing the recycling of water resources and improving the economic benefits of the enterprise.

[0015] 2. The utility model provides an ion membrane electrolysis device for treating high-salt water, which only requires electricity through the operation of the electrolytic cell, refrigeration unit and fan, and has the effects of low energy consumption and small environmental harm. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work. Among them:

[0017] Figure 1 This is a schematic diagram of the overall structure of an ion membrane electrolysis device for treating high-salt water according to the present invention;

[0018] Figure 2 This is a top view of an ion membrane electrolysis device for treating high-salt water according to the present invention;

[0019] Figure 3 This is a front view of an ion membrane electrolysis device for treating high-salt water according to the present invention;

[0020] Figure 4 This is a left view of an ion membrane electrolysis device for treating high-salt water according to the present invention.

[0021] Description of reference numerals:

[0022] 1. Power supply cabinet; 2. Electrolysis system; 21. Salt dissolving tank; 22. Water inlet; 23. Water softener; 24. Regenerated brine tank; 25. Concentrated brine buffer tank; 26. Desulfurization tower; 27. High-level water tank; 28. Hot water tank; 3. Production system; 31. Alkali preparation tank; 32. Diluted alkali tank; 33. Absorption tower; 34. Tail gas tower; 35. Finished product intermediate tank; 36. Finished product tank; 37. Sewage outlet; 38. Production outlet; 4. Connecting tube bundle; 5. Support tank; 6. Electrolytic cell; 61. Anode circulation tank; 62. Cathode circulation tank; 7. Refrigeration unit; 8. Fan; 81. Exhaust pipe. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0024] Reference Figure 1-4 , is an ion membrane electrolysis device for treating high salt water provided by the utility model, this ion membrane electrolysis device for treating high salt water includes an electrolysis system 2, a production system 3 is provided on one side of the electrolysis system 2, and a connecting tube bundle 4 and a support tank 5 are connected between the electrolysis system 2 and the production system 3; a power supply cabinet 1 is provided on one side of the electrolysis system 2, an electrolytic cell 6 is provided on one side of the power supply cabinet 1, an anode circulation tank 61 is provided at the other end of the electrolytic cell 6, a cathode circulation tank 62 is provided on one side of the anode circulation tank 61, and the cathode circulation tank 62 is arranged in parallel with the anode circulation tank 61, and a fan 8 is provided on one side of the cathode circulation tank 62, and the fan 8 is located between the electrolysis system 2 and the production system 3, and an exhaust pipe 81 is provided on the top of the fan 8.

[0025] Specifically, the electrolysis system 2 is provided with a production system 3 on one side of the electrolysis system 2. A connecting tube bundle 4 and a support tank 5 are connected between the electrolysis system 2 and the production system 3. The electrolysis system 2 electrolyzes the high-salt water, and the production system 3 reacts the electrolysis product in the electrolysis system 2 to produce sodium hypochlorite. The electrolysis system 2 and the production system 3 are connected through the connecting tube bundle 4, and the support tank 5 is used to protect the line between the electrolysis system 2 and the production system 3; a power supply cabinet 1 is provided on one side of the electrolysis system 2, and an electrolytic cell 6 is provided on one side of the power supply cabinet 1. An anode circulation tank 61 is provided at the other end, and a cathode circulation tank 62 is provided on one side of the anode circulation tank 61. The cathode circulation tank 62 is arranged in parallel with the anode circulation tank 61. The electrolytic tank 6 is driven by the power cabinet 1 to electrolyze the high-salt water, and anode circulation and cathode circulation are formed inside the anode circulation tank 61 and the cathode circulation tank 62 respectively; a fan 8 is provided on one side of the cathode circulation tank 62, and the fan 8 is located between the electrolysis system 2 and the production system 3. An exhaust pipe 81 is provided on the top of the fan 8, and the hydrogen after the hydrogen evolution reaction is discharged through the exhaust pipe 81 by the fan 8.

[0026] A salt dissolving tank 21 is provided on the other side of the electrolysis system 2. A water softener 23 is provided on the side of the salt dissolving tank 21 facing the production system 3. A concentrated brine buffer tank 25 is provided at the other end of the salt dissolving tank 21. A regenerated brine tank 24 is provided on the same side of the concentrated brine buffer tank 25 as the water softener 23.

[0027] Specifically, high-salt wastewater contains metal ions, SO4 2- The sodium chloride brine contains inorganic impurities such as TOC, alcohols and phenols, etc. These impurities coexist with the sodium chloride brine. If they are not completely removed, the resin tower resin will agglomerate and the exchange capacity will decrease. Some impurities are removed through the salt dissolving tank 21 and the water softener 23, and the relatively pure sodium chloride brine is passed into the concentrated brine buffer tank 25. The impurities in the sodium chloride are further removed through the water softener 23; the reacted salt is dissolved in the regenerated brine tank 24.

[0028] A hot water tank 28 is provided at the other end of the concentrated brine buffer tank 25, and a desulfurization tower 26 is provided at the other end of the hot water tank 28. A high-level water tank 27 is vertically provided on the side of the desulfurization tower 26 facing the production system 3, and the other end of the desulfurization tower 26 is an anode circulation tank 61 and a cathode circulation tank 62.

[0029] Specifically, the purified sodium chloride brine enters the high-level water tank 27 from the regeneration brine tank 24 and then enters the desulfurization tower 26 to remove the remaining SO4 2- The reaction is complete and the sodium chloride brine is passed into the electrolytic cell 6.

[0030] A pair of alkali preparation tanks 31 are provided on one side of the production system 3, a diluted alkali tank 32 is provided at the other end of the alkali preparation tank 31, an absorption tower 33 is provided on the other side of the diluted alkali tank 32, an exhaust tower 34 is provided at one end of the absorption tower 33, a finished product intermediate tank 35 is provided at the other end of the exhaust tower 34, and a finished product tank 36 is provided at one end of the finished product intermediate tank 35; a refrigeration unit 7 is provided on one side of the diluted alkali tank 32, and the refrigeration unit 7 is located outside the production system 3.

[0031] Specifically, the alkaline solution used to produce sodium hypochlorite is prepared in the alkali preparation tank 31 and passed into the diluted alkali tank 32 for dilution; the impurities in the reaction are absorbed by the absorption tower 33, and the tail gas tower 34 absorbs the reaction tail gas; the product then enters the finished product intermediate tank 35 for purification, and finally the purified product is passed into the finished product tank 36; the reaction in the alkali preparation tank 31 is cooled by the refrigeration unit 7.

[0032] The bottoms of the alkali preparation tank 31 , the diluted alkali tank 32 , the absorption tower 33 , the tail gas tower 34 , the finished product intermediate tank 35 and the finished product tank 36 are all provided with sewage outlets 37 .

[0033] Specifically, impurities in the alkali preparation tank 31 , the diluted alkali tank 32 , the absorption tower 33 , the tail gas tower 34 , the finished product intermediate tank 35 and the finished product tank 36 are discharged through the sewage outlet 37 .

[0034] A water inlet 22 is provided on one side of the salt dissolving tank 21 ; an output outlet 38 is provided on one side of the finished product tank 36 .

[0035] Specifically, brine is introduced into the salt dissolving tank 21 through the water inlet 22 ; and the finished product in the finished product tank 36 is discharged through the output outlet 38 .

[0036] The electrolytic cell 6 and the diluted alkali tank 32 are connected by a connecting tube bundle 4 , and the alkali preparation tank 31 and the diluted alkali tank 32 are connected by a connecting tube bundle 4 .

[0037] Specifically, the chloride ions generated after electrolysis in the electrolytic cell 6 are fully introduced into the diluted alkali tank 32 through the connecting tube bundle 4 and react with the alkali entering the diluted alkali tank 32 from the alkali preparation tank 31 .

[0038] During use, the high-salt water enters the electrolysis system 2 from the water inlet 22, and after being removed from the water, purified and desulfurized, it is electrolyzed in the electrolytic cell 6 to form a chloride ion solution. The solution is then passed into the dilute alkali tank 32 to react with the alkali solution prepared in the alkali preparation tank 31. After further removal of impurities, cooling and purification, the finished sodium hypochlorite is obtained, and the high-salt water is processed.

[0039] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, and all of these should be included in the scope of the claims of the present invention.

Claims

1. An ion-exchange membrane electrolysis device for treating high-salt water, characterized by: The invention comprises an electrolysis system (2), a production system (3) is provided on one side of the electrolysis system (2), and a connecting tube bundle (4) and a supporting tank (5) are connected between the electrolysis system (2) and the production system (3); a power supply cabinet (1) is provided on one side of the electrolysis system (2), an electrolysis tank (6) is provided on one side of the power supply cabinet (1), an anode circulation tank (61) is provided at the other end of the electrolysis tank (6), a cathode circulation tank (62) is provided on one side of the anode circulation tank (61), the cathode circulation tank (62) and the anode circulation tank (61) are arranged in parallel, a fan (8) is provided on one side of the cathode circulation tank (62), the fan (8) is located between the electrolysis system (2) and the production system (3), and an exhaust pipe (81) is provided on the top of the fan (8).

2. The ion membrane electrolysis device for treating high-salt water according to claim 1, characterized in that: A salt dissolving tank (21) is provided on the other side of the electrolysis system (2), a water softener (23) is provided on the side of the salt dissolving tank (21) facing the production system (3), a concentrated brine buffer tank (25) is provided at the other end of the salt dissolving tank (21), and a regenerated brine tank (24) is provided on the same side of the concentrated brine buffer tank (25) as the water softener (23).

3. The ion-exchange membrane electrolysis device for treating high-salt water according to claim 2, characterized in that: A hot water tank (28) is provided at the other end of the concentrated brine buffer tank (25), a desulfurization tower (26) is provided at the other end of the hot water tank (28), a high-level water tank (27) is vertically provided on the side of the desulfurization tower (26) facing the production system (3), and an anode circulation tank (61) and a cathode circulation tank (62) are provided at the other end of the desulfurization tower (26).

4. The ion membrane electrolysis device for treating high-salt water according to claim 3, characterized in that: A pair of alkali preparation tanks (31) are provided on one side of the production system (3), a diluted alkali tank (32) is provided at the other end of the alkali preparation tank (31), an absorption tower (33) is provided on the other side of the diluted alkali tank (32), a tail gas tower (34) is provided at one end of the absorption tower (33), a finished product intermediate tank (35) is provided at the other end of the tail gas tower (34), and a finished product tank (36) is provided at one end of the finished product intermediate tank (35); a refrigeration unit (7) is provided on one side of the diluted alkali tank (32), and the refrigeration unit (7) is located outside the production system (3).

5. The ion membrane electrolysis device for treating high-salt water according to claim 4, characterized in that: The bottoms of the alkali preparation tank (31), the diluted alkali tank (32), the absorption tower (33), the tail gas tower (34), the finished product intermediate tank (35) and the finished product tank (36) are all provided with sewage outlets (37).

6. The ion membrane electrolysis device for treating high-salt water according to claim 5, characterized in that: A water inlet (22) is provided on one side of the salt dissolving tank (21); and an output outlet (38) is provided on one side of the finished product tank (36).

7. The ion-exchange membrane electrolysis device for treating high-salt water according to claim 6, characterized in that: The electrolytic cell (6) and the diluted alkali tank (32) are connected by a connecting tube bundle (4), and the alkali preparation tank (31) and the diluted alkali tank (32) are connected by a connecting tube bundle (4).

Images