Normal-pressure full-automatic descaling COD (Chemical Oxygen Demand) sewage integrated treatment device

Abstract

The utility model provides a normal pressure type full-automatic descaling COD (Chemical Oxygen Demand) sewage integrated treatment device, which relates to the technical field of sewage treatment, a plurality of baffling chambers are arranged in a reaction tank of the integrated treatment device, and a plurality of alternately arranged cathode plates and anode plates are arranged in each baffling chamber. The multi-baffling chamber structure disclosed by the utility model has the beneficial effects that to-be-treated sewage can be baffled to pass through all the baffling chambers, and a water flow path is prolonged, so that the sewage can be fully electrolyzed by the cathode plates and the anode plates in the baffling chambers, organic pollutants in the sewage can be fully oxidized and decomposed by electrochemical reaction, and the sewage treatment efficiency is improved. The COD sewage treatment effect is improved. The mud scraping module of the integrated treatment device comprises the scraper assembly and the hydraulic lifting air cylinder, scraper blades of the scraper assembly are arranged on the two sides of the negative plate, the scraper blades can automatically remove dirt attached to the negative plate, it is guaranteed that the integrated treatment device can automatically run for a long time, tedious operation of manual dirt removal is avoided, and the dirt removal running cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to an atmospheric pressure fully automatic descaling COD wastewater integrated treatment device. Background Technology

[0002] In the field of wastewater treatment, COD wastewater refers to wastewater containing high levels of organic matter or reducing inorganic matter, requiring a large amount of oxygen for chemical oxidation. COD is an important indicator for measuring the content of organic pollutants in water bodies; the higher the value, the more oxidizable substances (such as organic matter, ferrous salts, sulfides, etc.) are present in the wastewater, and the more severe the pollution. Currently, COD wastewater is typically treated using biochemical oxidation and electrochemical methods. Biochemical oxidation methods are poorly adapted to high-hardness, high-COD wastewater (such as circulating water, desulfurization wastewater, and reverse osmosis concentrate), are prone to scaling and clogging, require frequent manual cleaning, and have high operating costs. Although electrochemical methods can simultaneously remove scale and degrade COD, existing electrochemical COD wastewater treatment devices suffer from short flow channels, low efficiency, and insufficient automation. Scale easily forms on their cathode plates, requiring shutdown for cleaning after scaling, affecting continuity, and resulting in high maintenance costs, thus limiting their widespread application in practical industrial settings. Utility Model Content

[0003] In view of this, the present invention provides an atmospheric pressure fully automatic descaling COD wastewater integrated treatment device, including a reaction tank, an electrolysis component and a sludge scraping module;

[0004] The reaction tank is equipped with multiple baffles, which divide the reaction tank into multiple baffle chambers.

[0005] Each baffle side edge forms a baffle opening with the inner wall of the reaction tank. All baffle openings are arranged in an alternating pattern. Adjacent baffle chambers are connected through the baffle openings. The two baffle chambers located at both ends are the water inlet chamber and the overflow chamber, respectively. The remaining baffle chambers are electrolytic catalytic chambers.

[0006] Each electrolytic catalytic chamber is equipped with multiple cathode plates and anode plates, which are arranged alternately.

[0007] The sludge scraping module includes two hydraulic cylinders, a lifting beam, and multiple scraper assemblies. The two hydraulic cylinders are vertically fixed at both ends of the reaction tank, and the two ends of the lifting beam are connected to the upper ends of the hydraulic shafts of the two hydraulic cylinders. Each scraper assembly includes multiple scraper blades, which are arranged in two groups on both sides of the cathode plate. All scraper blades are fixedly connected to the lifting beam by vertical connecting rods.

[0008] Furthermore, the bottom of the reaction tank is provided with an electrode base plate, on which multiple mud discharge holes are distributed. The lower ends of the cathode plate and the anode plate are both supported on the electrode base plate.

[0009] Furthermore, the bottom of the reaction tank is a cone structure, thereby forming a sludge discharge cone at the bottom of the reaction tank, and a sludge discharge pipe is provided at the bottom of the sludge discharge cone.

[0010] Furthermore, the anode plate is a titanium substrate, and the titanium substrate is further provided with a grid-like arrangement of transition coating and catalytic coating.

[0011] Furthermore, the transition coating material is one or more of TiO2, SnO2, Pt or Pd, and the catalyst layer is one or a composite of MnO2, Co3O4, NiO, IrO2, RuO2, and PbO2.

[0012] Furthermore, the cathode plate is made of one of the following materials: 304, 316, 316L, duplex steel, and titanium.

[0013] Furthermore, it also includes a gas collection hood, the top of which is provided with an exhaust pipe, and the outer wall of the reaction tank is also connected with a support frame plate, and the gas collection hood is supported inside the gas collection hood.

[0014] Furthermore, it also includes cathode copper busbars and anode copper busbars, which are located on both sides of the reaction tank, respectively. The cathode copper busbars are connected to all cathode plates, and the anode copper busbars are connected to all anode plates.

[0015] Furthermore, the inner wall of the reaction tank is also provided with a cathode support, and the cathode support is provided with a limiting groove, with the two sides of the cathode plate respectively limited within the limiting grooves of the two cathode supports.

[0016] Furthermore, mounting seats are provided on the outer walls of both ends of the reaction tank, and the lower ends of the two hydraulic cylinders are respectively fixed on the two mounting seats.

[0017] The beneficial effects of this atmospheric pressure fully automatic COD wastewater integrated treatment device are as follows: The reaction tank of this integrated treatment device is equipped with multiple baffle chambers. Each baffle chamber contains multiple alternating cathode and anode plates. The baffle chambers allow the wastewater to flow through all the chambers, extending the water flow path. This ensures that the wastewater is fully electrolyzed by the cathode and anode plates within the baffle chambers, allowing the organic pollutants in the wastewater to be fully oxidized and decomposed by the electrochemical reaction, improving the COD wastewater treatment effect. Furthermore, the wastewater treatment process does not require the addition of chemical agents, preventing secondary pollution. The integrated treatment device also includes a sludge scraping module, which comprises a scraper assembly and a hydraulic lifting cylinder that drives the scraper assembly. The scraper blades are located on both sides of the cathode plate. The hydraulic lifting cylinder drives the scraper blades to rise and fall, automatically removing the scale adhering to the cathode plate. This ensures that the integrated treatment device can operate automatically for extended periods, avoiding the tedious manual scaling operations and reducing descaling operating costs. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of an atmospheric pressure fully automatic descaling COD wastewater integrated treatment device according to an embodiment of this utility model.

[0019] Figure 2 yes Figure 1 Cross-sectional view at point AA.

[0020] Figure 3 yes Figure 1 Cross-sectional view at BB (scraper assembly not shown).

[0021] In the above figure: 1-Reaction tank, 11-Sludge discharge cone, 12-Water inlet pipe, 13-Support frame plate, 14-Sludge discharge pipe, 2-Gas collection hood, 21-Tail gas discharge port, 3-Baffle plate, 31-Overflow baffle, 4-Base plate of electrode seat, 5-Cathode plate, 51-Cathode copper busbar, 6-Anode plate, 61-Anode copper busbar, 7-Hydraulic cylinder, 71-Mounting base, 72-Lifting beam, 73-Scraper blade, 74-Vertical connecting rod, 8-Cathode support. Detailed Implementation

[0022] To make the objectives, technical solutions and advantages of this utility model clearer, the embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0023] Please refer to Figures 1 to 3 This utility model discloses an integrated atmospheric pressure fully automatic descaling COD wastewater treatment device, which includes a reaction tank 1, an electrolysis component, and a sludge scraping module.

[0024] The reaction tank 1 is a rectangular, open-top box. Multiple support legs are provided at the bottom of the reaction tank 1, which is supported by the support legs and suspended from the ground. The bottom of the reaction tank 1 has a conical structure, forming a sludge discharge cone 11 at the bottom of the reaction tank. A sludge discharge pipe 14 is provided at the bottom of the sludge discharge cone 11.

[0025] The reaction tank 1 is equipped with multiple baffles 3. One side of each baffle 3 is fixed to the inner wall of the reaction tank 1. The baffles 3 divide the reaction tank 1 into multiple baffle chambers. The side edge of each baffle 3 that is not connected to the inner wall of the reaction tank 1 forms a baffle opening with the inner wall of the reaction tank 1. All baffle openings are arranged in an alternating pattern, and adjacent baffle chambers are connected through the baffle openings. This allows all baffle chambers to be connected through the alternating baffle openings.

[0026] The two baffle chambers at either end of the baffle chamber are the inlet chamber and the overflow chamber, respectively, while the remaining baffle chambers are electrolytic catalytic chambers. Each electrolytic catalytic chamber is equipped with multiple cathode plates 5 and anode plates 6, which are arranged alternately. The side wall of the inlet chamber is connected to the inlet pipe 12, and the overflow chamber is equipped with an overflow baffle 31. The overflow baffle 31 has an overflow port at its upper part, and the side wall of the overflow chamber has a drain port. The wastewater to be treated enters the inlet chamber through the inlet pipe 12, and then flows sequentially through multiple electrolytic catalytic chambers through the staggered baffle ports. The cathode plates 5 and anode plates 6 in the electrolytic catalytic chambers allow the organic pollutants in the wastewater to be fully oxidized and decomposed by the electrochemical reaction. The oxidized and decomposed wastewater flows into the overflow chamber through the overflow port and then is discharged through the drain port.

[0027] The sludge scraping module includes two hydraulic cylinders 7, a lifting beam 72, and multiple scraper assemblies. The two hydraulic cylinders 7 are vertically fixed at both ends of the reaction tank 1, and both ends of the lifting beam 72 are connected to the upper ends of the hydraulic shafts of the two hydraulic cylinders 7. Each scraper assembly includes a scraper seat, and each scraper seat includes multiple scraper blades 73 and a vertical connecting rod 74. The scraper blades 73 are arranged in two groups on both sides of the cathode plate 5. Each group of scraper blades 73 includes multiple horizontally arranged scraper blades 73, and the scraper blades 73 in the same group are currently facing each other. In this configuration, all scraper blades 73 are connected to the lifting beam 72 via vertical connecting rods 74. The scraper blades 73 rest against the surface of the cathode plate 5. The hydraulic cylinder 7 periodically drives the lifting beam 72 to rise and fall, thereby allowing the scraper blades 73 to move up and down relative to the cathode plate 5 to scrape away the deposits on the cathode plate 5. The structure of multiple horizontally arranged and relatively vertically positioned scraper blades 73 reduces the lifting stroke of the hydraulic cylinder 7. The hydraulic cylinder 7 only needs to rise and fall a short distance for the multiple scraper blades 73 to work together to clean the entire surface of the cathode plate 5. The removed deposits fall into the sludge discharge cone 11 at the bottom of the reaction tank 1 and are then discharged through the sludge discharge pipe 14.

[0028] The multi-baffle chamber design of this integrated treatment unit allows wastewater to flow through all the chambers, extending the flow path and ensuring thorough electrolysis by the cathode and anode plates within each chamber, thus improving COD treatment efficiency. The unit's sludge scraping module automatically raises and lowers the scraper blades to remove scale adhering to the cathode plates, ensuring long-term automatic operation and eliminating the need for tedious manual cleaning, thereby reducing operating costs.

[0029] In a preferred embodiment, the bottom of the reaction tank 1 is provided with an electrode base plate 4, on which multiple sludge discharge holes are distributed. The electrode base plate 4 is made of insulating material, and the lower ends of the cathode plate 5 and anode plate 6 are both supported on the electrode base plate 4. The electrode base plate 4 can ensure the structural stability of the cathode plate 5 and anode plate 6. The reaction tank 1 can adopt an external carbon steel structure with a plastic-lined inner wall. The outer wall of the reaction tank 1 can also be provided with an external anti-corrosion coating. The electrode base plate 4 can be made of insulating materials such as PP, UPVC, and PE, which can ensure the insulation of the outer wall of the reaction tank 1 of the integrated COD wastewater treatment device.

[0030] In a preferred embodiment, the anode plate 6 is a titanium substrate, on which a grid-like transition coating and a catalytic coating are further disposed, i.e., the transition coating and the catalytic coating on the surface of the titanium substrate are arranged alternately and adjacently. The transition coating is made of one or more of TiO2, SnO2, Pt, or Pd, and the catalytic coating is made of one or more of MnO2, Co3O4, NiO, IrO2, RuO2, and PbO2, and the catalytic coating has nanocrystalline structure. The cathode plate 5 is made of one of 304, 316, 316L, duplex stainless steel, or titanium.

[0031] In a preferred embodiment, the integrated COD wastewater treatment device further includes a gas collection hood 2. The top of the gas collection hood 2 is equipped with an exhaust pipe 21, the upper end of which is a flange interface. A support frame plate 13 is also connected to the outer wall of the reaction tank 1, and the gas collection hood 2 is supported within the support frame plate 13. The upper end of the exhaust pipe 21 is a flange interface, and the exhaust pipe 21 is used to connect to the tail gas treatment system. During the electrolysis process, the integrated COD wastewater treatment device generates a small amount of tail gas (such as hydrogen or chlorine). This tail gas accumulates within the gas collection hood 2, which prevents the tail gas from diffusing and facilitates its collection and centralized treatment by the tail gas treatment system.

[0032] In a preferred embodiment, the system further includes a cathode copper busbar 4 and an anode copper busbar 61, which are located on both sides of the reaction tank 1. The cathode copper busbar 4 is connected to all cathode plates 5, and the anode copper busbar 61 is connected to all anode plates 6. Both the cathode copper busbar 4 and the anode copper busbar 61 are located between the support frame plate 13 and the outer wall of the reaction tank 1.

[0033] In a preferred embodiment, the inner wall of the reaction tank 1 is further provided with a cathode support 8. The cathode support 8 is provided with a limiting groove, and the cathode plate 5 is respectively limited within the limiting grooves of the two cathode supports 8. The cathode support 8 is used to further limit the cathode plate 5 and prevent the cathode plate 5 from loosening during the lifting and lowering process of the scraper blade 73. Mounting seats 71 are provided on the outer walls at both ends of the reaction tank 1. The two hydraulic cylinders 7 are vertically fixed to the outer wall of the reaction tank 1, and the lower ends of the hydraulic cylinders 7 are respectively fixed to the two mounting seats 71. The upper ends of the hydraulic cylinders 7 are located inside the gas collecting hood 2.

[0034] In this document, the directional terms such as front, back, top, and bottom are defined based on the location of the components in the accompanying drawings and their relative positions to each other, solely for the purpose of clarity and convenience in expressing the technical solution. It should be understood that the use of these directional terms should not limit the scope of protection claimed in this application.

[0035] Where there is no conflict, the above embodiments and features described herein can be combined with each other.

[0036] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A fully automatic atmospheric pressure descaling and COD wastewater integrated treatment device, characterized in that: It includes a reaction tank (1), an electrolysis assembly, and a sludge scraping module; The reaction tank (1) is provided with multiple baffles (3), which divide the reaction tank (1) into multiple baffle chambers. The side edge of each baffle (3) forms a baffle opening with the inner wall of the reaction tank (1). All baffle openings are arranged in an alternating manner, and adjacent baffle chambers are connected through the baffle openings. The two baffle chambers located at both ends of the baffle chamber are the water inlet chamber and the overflow chamber, respectively. The remaining baffle chambers are electrolytic catalytic chambers. Each electrolytic catalytic chamber is provided with multiple cathode plates (5) and anode plates (6), which are arranged alternately. The sludge scraping module includes two hydraulic cylinders (7), a lifting beam (72), and multiple scraper assemblies. The two hydraulic cylinders (7) are vertically fixed at both ends of the reaction tank (1), and the two ends of the lifting beam (72) are connected to the upper ends of the hydraulic shafts of the two hydraulic cylinders (7). Each scraper assembly includes multiple scraper blades (73), which are arranged in two groups on both sides of the cathode plate (5). All scraper blades (73) are fixedly connected to the lifting beam (72) by a vertical connecting rod (74).

2. The atmospheric pressure fully automatic descaling COD wastewater integrated treatment device according to claim 1, characterized in that: The bottom of the reaction tank (1) is provided with an electrode base plate (4), and multiple mud discharge holes are distributed on the electrode base plate (4). The lower ends of the cathode plate (5) and the anode plate (6) are both supported on the electrode base plate (4).

3. The apparatus according to claim 1, characterized in that: The bottom of the reaction tank (1) is a cone structure, thereby forming a mud discharge cone (11) at the bottom of the reaction tank (1), and a mud discharge pipe (14) is provided at the bottom of the mud discharge cone (11).

4. The atmospheric pressure fully automatic descaling COD wastewater integrated treatment device according to claim 1, characterized in that: The anode plate (6) is a titanium substrate, and the titanium substrate is further provided with a grid-like transition coating and a catalytic coating.

5. The atmospheric pressure fully automatic descaling COD wastewater integrated treatment device according to claim 4, characterized in that: The cathode plate (5) is made of one of the following materials: 304, 316, 316L, duplex steel, or titanium.

6. The atmospheric pressure fully automatic descaling COD wastewater integrated treatment device according to claim 1, characterized in that: It also includes a gas collection hood (2), the top of which is provided with an exhaust pipe (21), and the outer wall of the reaction tank (1) is also connected to a support frame plate (13), and the gas collection hood (2) is supported inside the support frame plate (13).

7. The atmospheric pressure fully automatic descaling COD wastewater integrated treatment device according to claim 6, characterized in that: It also includes a cathode copper busbar (51) and an anode copper busbar (61), which are located on both sides of the reaction tank (1). The cathode copper busbar (51) is connected to all the cathode plates (5), and the anode copper busbar (61) is connected to all the anode plates (6).

8. The atmospheric pressure fully automatic descaling COD wastewater integrated treatment device according to claim 6, characterized in that: The inner wall of the reaction tank (1) is also provided with a cathode support (8), and the cathode support (8) is provided with a limiting groove. The cathode plate (5) is respectively limited to the limiting grooves of the two cathode supports (8).

9. The atmospheric pressure fully automatic descaling COD wastewater integrated treatment device according to claim 1, characterized in that: The reaction tank (1) has mounting bases (71) on both ends of its outer wall, and the lower ends of the two hydraulic cylinders (7) are respectively fixed on the two mounting bases (71).

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