Anaerobic-oxidation device for treating wastewater containing organic quaternary phosphorus salt

Abstract

The utility model relates to the technical field of wastewater treatment, and discloses an anaerobic-oxidation device for treating wastewater containing organic quaternary phosphonium salt, which comprises a tank, a primary sedimentation tank and a secondary sedimentation tank are arranged in the tank, a filter screen is arranged between the primary sedimentation tank and the secondary sedimentation tank, and an anaerobic reaction tank and an oxidation reaction tank are arranged on the edge of the secondary sedimentation tank; a second partition plate is arranged between the secondary sedimentation tank and the anaerobic reaction tank, a third partition plate is arranged between the anaerobic reaction tank and the oxidation reaction tank, a baffle is arranged above the third partition plate, a driving assembly is connected above the baffle, and the driving assembly is used for controlling the baffle to move up and down; two U-shaped blocking strips are arranged at the top of the third partition plate, and the left ends and the right ends of the two U-shaped blocking strips are connected with the inner wall of the pool. According to the utility model, wastewater impurities can be conveniently gathered towards the center, the reaction rate is increased, the scraper rotates to scrape sediments on the bottom plate, and the impurities at the bottom are prevented from being incapable of being in contact with medicaments; the relevance between different reaction tanks is strong, and the transfer efficiency is high.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to an anaerobic-oxidation device for treating wastewater containing organic quaternary phosphate salts. Background Technology

[0002] Tetramethylolphosphine is a type of quaternary phosphine salt. Currently, it is used in the phosphate tanning process of leather production to replace chrome tanning, reducing the dependence on heavy metal chromium in the leather tanning stage. It can also be added as a flame retardant and a water-resistant chemical. Therefore, its application scope and scenarios are receiving increasing attention and development. However, due to the high residual amount of chemical in the wastewater discharged from phosphate tanning production, high-concentration and high-salinity organophosphorus wastewater is generated. This type of wastewater has strong biological toxicity, and the harmful components in the wastewater need to be removed by anaerobic treatment and oxidation reaction.

[0003] However, in existing wastewater treatment processes, there are many impurities in the wastewater inside the reaction device, which easily settle and adhere to the bottom of the device, making it difficult to clean the inside of the reaction tank. At the same time, the reagents and impurities are adsorbed and settled together, affecting the mixing efficiency of the reagents. Furthermore, the correlation between different reaction tanks in wastewater treatment is low, and the wastewater transfer efficiency is slow.

[0004] Therefore, those skilled in the art urgently need to develop an anaerobic-oxidation device for treating wastewater containing organic quaternary phosphate salts. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing an anaerobic-oxidation device for treating wastewater containing organic quaternary phosphate.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: an anaerobic-oxidation device for treating wastewater containing organic quaternary phosphorus salts, comprising a pool, wherein the pool contains a primary sedimentation tank and a secondary sedimentation tank, which are connected by a first partition. The first partition is equipped with a filter screen. An anaerobic reaction tank and an oxidation reaction tank are located beside the secondary sedimentation tank, and the oxidation reaction tank contains an air pipe. The secondary sedimentation tank and the anaerobic reaction tank are connected by a second partition, the top of which has a groove. The reaction tank and the oxidation reaction tank are connected by a third partition. The height of the third partition is lower than that of the first and second partitions. A baffle is provided above the third partition, and a driving assembly is connected above the baffle. The driving assembly is used to control the baffle to move up and down. Both sides of the top of the third partition are connected to U-shaped baffles. The left and right ends of the two U-shaped baffles are connected to the inner wall of the tank. When the baffle moves to the bottom, the left, lower, and right sides of the baffle are all located between the two U-shaped baffles, and the left, lower, and right sides of the baffle are sealed to the two U-shaped baffles.

[0007] Preferably, the drive assembly includes two support columns connected to the top of the pool, with a top plate connected to the top of the two support columns. An electric telescopic rod is provided on the top plate, and the output end of the electric telescopic rod extends out of the top plate and is connected to a baffle.

[0008] Preferably, both the anaerobic reaction tank and the oxidation reaction tank are equipped with a bottom plate, and the center of both bottom plates is lower than the surrounding area.

[0009] Preferably, a motor is connected to the bottom of both base plates, and the output end of the motor extends out of the base plate and is connected to the rotating shaft. Multiple scrapers are connected to the rotating shaft, and the bottom of the lowest scraper is in contact with the base plate.

[0010] Preferably, each of the primary sedimentation tank, secondary sedimentation tank, anaerobic reaction tank, and oxidation reaction tank is connected to a drain pipe, and each drain pipe is equipped with a control valve.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] In this invention, the center of the two bottom plates is positioned relatively low, which facilitates the accumulation of impurities in the wastewater towards the center, increasing the reaction rate. The bottom of the lowest scraper is in contact with the bottom plate, and the scraper is rotated by a motor to scrape up the sediment on the bottom plate, cleaning the device while preventing impurities at the bottom from failing to contact the reagents. In this device, the different reaction tanks are highly interconnected. The baffles can be raised and lowered by an electric telescopic rod, which can transfer the anaerobic wastewater to the oxidation reaction tank, improving the transfer efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a cross-sectional view of the third partition, baffle, and U-shaped baffle strip described in this utility model;

[0015] Figure 3 This is a cross-sectional view of the anaerobic reactor and the oxidation reactor described in this utility model.

[0016] In the diagram: 1-Pool; 2-Primary sedimentation tank; 3-Secondary sedimentation tank; 4-Anaerobic reaction tank; 5-Oxidation reaction tank; 6-First baffle; 7-Filter screen; 8-Second baffle; 9-Groove; 10-Third baffle; 11-Baffle; 12-U-shaped baffle; 13-Support column; 14-Top plate; 15-Electric telescopic rod; 16-Bottom plate; 17-Motor; 18-Scraper; 19-Rotating shaft; 20-Gas pipe. Detailed Implementation

[0017] The present invention will now be clearly described with reference to the accompanying drawings and specific embodiments. This description is merely for explaining the present invention and is not intended to limit it. Any modifications, equivalent substitutions, improvements, etc., made by those skilled in the art based on the embodiments of the present invention without inventive effort to obtain all other embodiments should be included within the protection scope of the present invention.

[0018] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0020] Please see Figures 1-3This utility model provides an embodiment of an anaerobic-oxidation device for treating wastewater containing organic quaternary phosphate, comprising a tank 1, with a primary sedimentation tank 2 and a secondary sedimentation tank 3 inside the tank 1, connected by a first partition 6, on which a filter screen 7 is provided; an anaerobic reaction tank 4 and an oxidation reaction tank 5 are provided on the side of the secondary sedimentation tank 3, with an air pipe 20 inside the oxidation reaction tank 5; the secondary sedimentation tank 3 and the anaerobic reaction tank 4 are connected by a second partition 8, with a groove 9 on the top of the second partition 8; the anaerobic reaction tank 4 and the oxidation reaction tank 5 are connected by a third partition 10, the height of which is lower than that of the first partition. Above the second partition 8 and the third partition 10, there is a baffle 11. A drive assembly is connected above the baffle 11 to control the baffle 11 to move up and down. Both sides of the top of the third partition 10 are connected to U-shaped baffles 12. The left and right ends of the two U-shaped baffles 12 are connected to the inner wall of the tank 1. When the baffle 11 moves to the bottom, the left, lower and right sides of the baffle 11 are located between the two U-shaped baffles 12, and the left, lower and right sides of the baffle 11 are sealed to the two U-shaped baffles 12. The primary sedimentation tank 2, the secondary sedimentation tank 3, the anaerobic reaction tank 4 and the oxidation reaction tank 5 are all connected to drainage pipes, and each drainage pipe is equipped with a control valve.

[0021] Furthermore, the drive assembly includes two support columns 13 connected to the top of the pool 1, and a top plate 14 connected to the top of the two support columns 13. An electric telescopic rod 15 is provided on the top plate 14, and the output end of the electric telescopic rod 15 extends out of the top plate 14 and is connected to the baffle 11.

[0022] The baffle 11 is raised and lowered by the electric telescopic rod 15. When the anaerobic wastewater needs to be transferred to the oxidation reaction tank 5, the baffle 11 can be raised. When closing, the baffle 11 can be lowered. The two U-shaped baffles 12 are equipped with sealing strips inside. When the baffle 11 moves to the bottom, the left, lower and right sides of the baffle 11 are located between the two U-shaped baffles 12 and are sealed to the two U-shaped baffles 12.

[0023] Furthermore, both the anaerobic reactor 4 and the oxidation reactor 5 are equipped with a bottom plate 16. The center of both bottom plates 16 is lower than the surrounding area. A motor 17 is connected to the bottom of both bottom plates 16. The output end of the motor 17 extends out of the bottom plate 16 and is connected to the rotating shaft 19. Multiple scrapers 18 are connected to the rotating shaft 19. The bottom of the lowest scraper 18 is in contact with the bottom plate 16.

[0024] The two bottom plates 16 are positioned low at the center, which facilitates the accumulation of impurities in the wastewater towards the center, increasing the reaction rate. At the same time, the motor 17 can be started, which drives the scraper 18 to rotate through the shaft 19, agitating the internal wastewater and further increasing the reaction rate. The bottom of the lowest scraper 18 is in contact with the bottom plate 16, scraping up the sediment on the bottom plate 16 to clean the device and prevent impurities at the bottom from being unable to contact the reagents.

[0025] The working principle of this utility model is as follows: When using this utility model, the wastewater to be treated is discharged into the primary sedimentation tank 2, where it undergoes primary filtration through the filter screen 7. The wastewater then flows into the secondary sedimentation tank 3 for sedimentation. The supernatant flows into the anaerobic reaction tank 4 through the groove 9, where appropriate reagents are added for reaction. Afterward, the baffle 11 is raised by the electric telescopic rod 15, and the anaerobic wastewater is transferred to the oxidation reaction tank 5. Oxygen is continuously supplied to the air pipe 20 by the air pump for oxidation reaction. To increase the reaction rate, the motor 17 can be started. The motor 17 drives the scraper 18 to rotate through the rotating shaft 19, which agitates the internal wastewater and further increases the reaction rate.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An anaerobic-oxidation plant for the treatment of wastewater containing organic quaternary phosphonium salts, comprising a tank (1), characterized in that: The inside of the pool (1) is provided with a first stage sedimentation tank (2) and a second stage sedimentation tank (3), the first stage sedimentation tank (2) and the second stage sedimentation tank (3) are connected through a first partition (6), the first partition (6) is provided with a filter screen (7), the side of the second stage sedimentation tank (3) is provided with an anaerobic reaction tank (4) and an oxidation reaction tank (5), the inside of the oxidation reaction tank (5) is provided with an air pipe (20); The second stage sedimentation tank (3) and the anaerobic reaction tank (4) are connected through a second partition (8), the top of the second partition (8) is provided with a groove (9), the anaerobic reaction tank (4) and the oxidation reaction tank (5) are connected through a third partition (10), the height of the third partition (10) is lower than that of the first partition (6) and the second partition (8), the upper side of the third partition (10) is provided with a baffle (11), the upper side of the baffle (11) is connected with a driving assembly, the driving assembly is used for controlling the baffle (11) to move up and down; The left and right sides of the top of the third partition (10) are connected with two U-shaped blocking strips (12), the left and right ends of the two U-shaped blocking strips (12) are connected with the inner wall of the pool (1), when the baffle (11) moves to the bottom, the left, lower and right sides of the baffle (11) are located between the two U-shaped blocking strips (12), and the left, lower and right sides of the baffle (11) are sealingly connected with the two U-shaped blocking strips (12).

2. An anaerobic-oxidation device for treating wastewater containing organic quaternary phosphonium salt according to claim 1, characterized by: The driving assembly comprises two supporting columns (13) connected with the top of the pool (1), the top of the two supporting columns (13) is connected with a top plate (14), the top plate (14) is provided with an electric telescopic rod (15), the output end of the electric telescopic rod (15) extends out of the top plate (14) and is connected with the baffle (11).

3. An anaerobic-oxidation device for treating wastewater containing organic quaternary phosphonium salt according to claim 1, characterized in that: The inside of the anaerobic reaction tank (4) and the oxidation reaction tank (5) is provided with a bottom plate (16), the center of the two bottom plates (16) is lower than the periphery.

4. An anaerobic-oxidation device for treating wastewater containing organic quaternary phosphonium salt according to claim 3, characterized by: The lower side of the two bottom plates (16) is connected with a motor (17), the output end of the motor (17) extends out of the bottom plate (16) and is connected with a rotating shaft (19), the rotating shaft (19) is connected with a plurality of scrapers (18), the bottom of the lowermost scraper (18) is in contact with the bottom plate (16).

5. The anaerobic-oxidation device for treating wastewater containing organic quaternary phosphonium salt according to claim 1, characterized by: The first stage sedimentation tank (2), the second stage sedimentation tank (3), the anaerobic reaction tank (4) and the oxidation reaction tank (5) are all connected with a drain pipe, the control valve is arranged on each drain pipe.

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