Wastewater treatment devices based on chemical dosing

Abstract

This utility model relates to the field of wastewater treatment technology, and more particularly to a wastewater treatment device based on chemical dosing, comprising: a mixing tank, a first inlet pipe, and a second inlet pipe. The first inlet pipe penetrates and is connected to the mixing tank, and is used to inject wastewater to be treated into the mixing tank. The second inlet pipe is used to inject chemicals into the mixing tank. The second inlet pipe includes: a first branch pipe and multiple second branch pipes. The inlet end of the first branch pipe extends to the outside of the mixing tank, and the inlet end of the second branch pipe is connected to the outlet end of the first branch pipe. The multiple second branch pipes are arranged in a ring at equal intervals, and the outlet ends of the multiple second branch pipes are arranged in a stepped manner. The stepped arrangement of the outlet ends of the multiple second branch pipes in this utility model allows the chemicals to react with impurities in the wastewater at different locations within the mixing tank, thereby improving the wastewater treatment efficiency and effect.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a wastewater treatment device based on chemical dosing. Background Technology

[0002] Wastewater refers to polluted wastewater discharged from domestic and industrial processes. Due to the introduction of new substances or changes in external conditions, the water deteriorates and can no longer maintain its original function. Wastewater can be defined as liquid or water carrying waste, mixed with groundwater, surface water, snowmelt, etc., discharged from residential, government, commercial, or industrial areas. Untreated wastewater discharge poses a significant threat to the environment and human health. Therefore, it needs to be treated and purified before discharge. For this reason, we urgently need a wastewater treatment device based on chemical dosing.

[0003] Currently, the method of wastewater treatment by chemical dosing involves using a motor to control the rotation of the stirring blades to ensure that the wastewater and chemicals are mixed evenly. The wastewater is then treated by reacting the chemicals with the impurities in the wastewater. However, when there are many impurities in the wastewater, most of them will settle to the bottom of the mixing tank and will be difficult to mix with the chemicals floating on the surface. This will affect the wastewater treatment efficiency and effect. Utility Model Content

[0004] To address the shortcomings of existing production technologies, the applicant provides a wastewater treatment device based on chemical dosing. By improving the structure of the wastewater treatment device, the chemical can react with impurities in the wastewater at various locations in the mixing tank, thereby improving the wastewater treatment efficiency and effect.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A wastewater treatment device based on chemical dosing includes: a mixing tank, a first inlet pipe, and a second inlet pipe. The first inlet pipe passes through and is connected to the mixing tank. The first inlet pipe is used to inject wastewater to be treated into the mixing tank. The second inlet pipe is used to inject chemicals into the mixing tank. The second inlet pipe includes: a first branch pipe and a plurality of second branch pipes. The inlet end of the first branch pipe extends to the outside of the mixing tank. The inlet end of the second branch pipe is connected to the outlet end of the first branch pipe. The plurality of second branch pipes are arranged in a ring at equal intervals, and the outlet ends of the plurality of second branch pipes are arranged in a stepped manner. The lengths of the plurality of second branch pipes are denoted as d1, d2, ..., dn, where d1 < d2 < ... < dn.

[0007] Therefore, the design of multiple second branch pipe outlets in a stepped manner, compared with the existing method of having the agent float on the top, is simpler in structure and easier to operate. The design of multiple second branch pipe outlets in a stepped manner allows the agent to penetrate into the sewage at different locations, so that the agent is distributed in a stepped manner in the mixing tank. This allows the agent to react with impurities in the sewage at different locations in the mixing tank, avoiding the problem that impurities that settle at the bottom of the mixing tank cannot react with the agent floating on the top, thereby improving the sewage treatment efficiency and treatment effect.

[0008] As a further improvement to the above technical solution: the first branch pipe is connected to the top plate of the mixing tank, and the second branch pipe is connected to the side wall of the mixing tank. Thus, the first and second branch pipes are located at the edge of the mixing tank, reducing the space occupied by the first and second branch pipes and allowing more space in the mixing tank for mixing wastewater, thereby further improving the wastewater treatment efficiency and effect.

[0009] As a further improvement to the above technical solution, it also includes: a plurality of first clips, the first clips being distributed in a ring at equal intervals, and the first clips being located between two adjacent second branch pipes. The first clips are connected to the top plate of the mixing tank, and the first branch pipes are snapped into the first clips. Thus, the first clips facilitate the installation and removal of the first branch pipes, ensuring that the first branch pipes remain stable relative to the mixing tank at all times.

[0010] As a further improvement to the above technical solution, it also includes: multiple second clips, each corresponding to one of the first branch pipes, the second clips being connected to the side wall of the mixing tank, and the second branch pipes being snapped into the second clips. Thus, the second clips facilitate the installation and removal of the second branch pipes, ensuring that the second branch pipes remain stable relative to the mixing tank.

[0011] As a further improvement to the above technical solution: the mixing tank is provided with a wastewater treatment tank and a temperature control tank. The first feed pipe and the second feed pipe are both located inside the wastewater treatment tank, which is used for wastewater treatment. The temperature control tank is located outside the wastewater treatment tank and is used to inject a cooling medium or a heating medium to regulate the temperature inside the wastewater treatment tank. Therefore, the temperature inside the wastewater treatment tank can be controlled by the cooling or heating medium in the temperature control tank, facilitating the reaction between the wastewater and the reagents, thereby further improving the wastewater treatment efficiency and effect.

[0012] As a further improvement to the above technical solution, it also includes an inlet pipe and an outlet pipe, both of which are installed on the mixing tank and connected to the temperature regulating tank, with the outlet pipe located below the inlet pipe. Thus, the cooling medium or heating medium enters the temperature regulating tank through the inlet pipe and exits from the temperature regulating tank through the outlet pipe.

[0013] As a further improvement to the above technical solution: both the inlet pipe and the outlet pipe are equipped with a first valve. Thus, the opening and closing of the inlet pipe and the outlet pipe can be achieved by opening and closing the first valve.

[0014] As a further improvement to the above technical solution: the top of the mixing tank is provided with a stepped portion and a sealing cover. The stepped portion is connected to the top plate of the mixing tank, and the stepped portion is connected to the sealing cover by bolts. The sealing cover is used to seal the sewage treatment tank, and a sealing gasket is provided on the outer circumferential surface of the sealing cover. Thus, the stepped portion facilitates the installation of the sealing cover on the mixing tank, and the sealing gasket improves the sealing performance between the mixing tank and the sealing cover.

[0015] As a further improvement to the above technical solution, it also includes: a drive unit, a rotating rod, and multiple agitators. The drive unit is mounted on the sealing cover, the rotating rod passes through the sealing cover and is connected to the drive end of the drive unit, and the agitators are located inside the wastewater treatment tank. Multiple agitators are connected to the rotating rod and are distributed sequentially from top to bottom. Thus, activating the drive unit drives the rotating rod to rotate, which in turn drives the agitators to rotate, thereby achieving the mixing and treatment of wastewater and chemicals using the rotating agitators.

[0016] As a further improvement to the above technical solution: a discharge pipe is provided at the bottom of the mixing tank, and a second valve is provided on the discharge pipe. Thus, by opening the second valve, the solid-liquid mixture resulting from the reaction of wastewater and the reagent is discharged through the discharge pipe.

[0017] The beneficial effects of this utility model are as follows:

[0018] The design with multiple tiered outlets of the second branch pipes offers a simpler and easier-to-operate structure compared to the existing method where the reagent floats on top. This tiered design allows the reagent to penetrate wastewater at different locations, resulting in a tiered distribution of the reagent within the mixing tank. This facilitates the reaction of the reagent with impurities in the wastewater at different locations within the tank, preventing impurities that settle at the bottom from failing to react with the reagent floating on top. This improves wastewater treatment efficiency and effectiveness.

[0019] This utility model also has the following advantages:

[0020] 1. The first and second branch pipes of this utility model are located at the edge of the mixing tank to reduce the space occupied by the first and second branch pipes, so that the mixing tank has more space for sewage to mix with sewage, thereby further improving the sewage treatment efficiency and treatment effect.

[0021] 2. This utility model uses a first buckle to facilitate the installation and disassembly of the first branch pipe, ensuring that the first branch pipe remains stable relative to the mixing tank; and uses a second buckle to facilitate the installation and disassembly of the second branch pipe, ensuring that the second branch pipe remains stable relative to the mixing tank.

[0022] 3. This utility model can control the temperature inside the sewage treatment tank by using a cooling or heating medium in the temperature regulating tank, so as to facilitate the reaction between sewage and chemicals in the sewage treatment tank, thereby further improving the sewage treatment efficiency and effect. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the wastewater treatment device based on chemical dosing according to this utility model;

[0024] Figure 2 This is a cross-sectional view of the wastewater treatment device based on chemical dosing according to this utility model;

[0025] Figure 3 This is a cross-sectional front view of the wastewater treatment device based on chemical dosing according to this utility model;

[0026] Figure 4 This is a schematic diagram of the second feed pipe, the first buckle, and the installation of the second buckle of this utility model.

[0027] Among them: 1. Mixing tank;

[0028] 101. Wastewater treatment tank; 102. Temperature regulating tank; 103. Stepped section; 104. Sealing cover; 105. Sealing gasket;

[0029] 2. First feed pipe;

[0030] 3. Second feed pipe;

[0031] 301. First branch pipe; 302. Second branch pipe;

[0032] 4. First buckle;

[0033] 5. Second buckle;

[0034] 6. Water inlet pipe;

[0035] 7. Water outlet pipe;

[0036] 8. First valve;

[0037] 9. Driving components;

[0038] 10. Rotating rod;

[0039] 11. Agitator;

[0040] 12. Discharge pipe;

[0041] 13. Second valve. Detailed Implementation

[0042] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0043] like Figures 1 to 4 The diagram shows the preferred embodiment of this utility model. This embodiment of the wastewater treatment device based on chemical dosing includes: a mixing tank 1, a first feed pipe 2, and a second feed pipe 3. The first feed pipe 2 penetrates the mixing tank 1 and is connected to it. The first feed pipe 2 is used to inject wastewater to be treated into the mixing tank 1. The second feed pipe 3 is used to inject chemicals into the mixing tank 1. The second feed pipe 3 includes: a first branch pipe 301 and multiple second branch pipes 302. The inlet end of the first branch pipe 301 extends to the outside of the mixing tank 1. The inlet end of the second branch pipe 302 is connected to the outlet end of the first branch pipe 301. The multiple second branch pipes 302 are arranged in an equally spaced ring, and the outlet ends of the multiple second branch pipes 302 are arranged in a stepped manner. The lengths of the multiple second branch pipes 302 are denoted as d1, d2, ..., dn, where d1 < d2 < ... < dn. Therefore, the design of multiple second branch pipes 302 with tiered outlets is simpler and easier to operate than the existing method of having the agent float on the top. The tiered design of multiple second branch pipes 302 with tiered outlets allows the agent to penetrate into the sewage at different locations, so that the agent is distributed in tiers within the mixing tank 1. This allows the agent to react with impurities in the sewage at different locations within the mixing tank 1, thus avoiding the problem that impurities settled at the bottom of the mixing tank 1 cannot react with the agent floating on the top, thereby improving the sewage treatment efficiency and effect.

[0044] In other words, multiple second branch pipes 302 are installed on the first branch pipe 301, and d1 < d2 < ... < dn. This ensures that the reagent flowing out of the outlet of each second branch pipe 302 is distributed at various positions in the mixing tank 1. During wastewater treatment, the distribution range of the reagent is expanded (i.e., the position of the reagent relative to the mixing tank 1 is adjusted by the different positions of the outlets of the different second branch pipes 302), so that the wastewater at various positions in the mixing tank 1 can react with the reagent. Impurities that can settle at the bottom of the mixing tank 1 are difficult to react with the reagent floating on the upper layer, thereby improving the wastewater treatment efficiency and treatment effect.

[0045] In this embodiment, the first branch pipe 301 is connected to the top plate of the mixing tank 1, and the second branch pipe 302 is connected to the side wall of the mixing tank 1. Thus, the first branch pipe 301 and the second branch pipe 302 are located at the edge of the mixing tank 1, reducing the space occupied by the first branch pipe 301 and the second branch pipe 302, allowing the mixing tank 1 to have more space for mixing wastewater, thereby further improving the wastewater treatment efficiency and effect.

[0046] In this embodiment, the system further includes: multiple first clips 4 and multiple second clips 5. The first clips 4 are arranged in a ring at equal intervals and are located between two adjacent second branch pipes 302. The first clips 4 are connected to the top plate of the mixing tank 1, and the first branch pipe 301 is clipped into the first clip 4. The second clips 5 correspond one-to-one with the first branch pipe 301 and are connected to the side wall of the mixing tank 1. The second branch pipe 302 is clipped into the second clip 5. Thus, the first clips 4 facilitate the installation and removal of the first branch pipe 301 to ensure that the first branch pipe 301 remains stable relative to the mixing tank 1; the second clips 5 facilitate the installation and removal of the second branch pipe 302 to ensure that the second branch pipe 302 remains stable relative to the mixing tank 1.

[0047] In this embodiment, the mixing tank 1 is provided with a sewage treatment tank 101 and a temperature regulating tank 102. The first feed pipe 2 and the second feed pipe 3 are both located inside the sewage treatment tank 101. The sewage treatment tank 101 is used for sewage treatment. The temperature regulating tank 102 is located outside the sewage treatment tank 101 and is used to inject cooling medium or heating medium to regulate the temperature inside the sewage treatment tank 101. The top of the mixing tank 1 is provided with a step portion 103 and a sealing cover 104. The step portion 103 is connected to the top plate of the mixing tank 1. The step portion 103 and the sealing cover 104 are connected by bolts. The sealing cover 104 is used to seal the sewage treatment tank 101. A sealing gasket 105 is provided on the outer peripheral surface of the sealing cover 104. Therefore, the temperature in the sewage treatment tank 101 can be controlled by the cooling or heating medium in the temperature regulating tank 102, so that the sewage and the agent in the sewage treatment tank 101 can react, thereby further improving the sewage treatment efficiency and treatment effect; the step portion 103 makes it easy to install the sealing cover 104 on the mixing tank 1, and the sealing gasket 105 improves the sealing performance between the mixing tank 1 and the sealing cover 104.

[0048] In this embodiment, it also includes an inlet pipe 6 and an outlet pipe 7, both of which are installed on the mixing tank 1 and connected to the temperature regulating tank 102, with the outlet pipe 7 located below the inlet pipe 6. Both the inlet pipe 6 and the outlet pipe 7 are equipped with a first valve 8. Thus, the cooling medium or heating medium enters the temperature regulating tank 102 through the inlet pipe 6 and exits from the temperature regulating tank 102 through the outlet pipe 7. The opening and closing of the first valve 8 controls the opening and closing of the inlet pipe 6 and the outlet pipe 7.

[0049] In this embodiment, the system further includes a drive unit 9, a rotating rod 10, and multiple agitators 11. The drive unit 9 is mounted on a sealing cover 104. The rotating rod 10 passes through the sealing cover 104 and is connected to the drive end of the drive unit 9. The agitators 11 are located inside the wastewater treatment tank 101. Multiple agitators 11 are connected to the rotating rod 10 and are distributed sequentially from top to bottom. Therefore, activating the drive unit 9 drives the rotating rod 10 to rotate, which in turn drives the agitators 11 to rotate, thereby achieving the mixing and treatment of wastewater and chemicals using the rotating agitators 11.

[0050] For example, drive component 9 uses a motor.

[0051] In this embodiment, a discharge pipe 12 is provided at the bottom of the mixing tank 1, and a second valve 13 is provided on the discharge pipe 12. Thus, by opening the second valve 13, the solid-liquid mixture after the wastewater reacts with the reagent is discharged through the discharge pipe 12.

[0052] The wastewater treatment process of this utility model is as follows: First, wastewater to be treated is injected into the wastewater treatment tank 101 through the first feed tank. Then, chemicals (e.g., for phosphorus removal from phosphorus-containing wastewater, polyaluminum chloride (PAC) and polyferric sulfate (PFS) are injected into the wastewater treatment tank 101 through the first branch pipe 301 and the second branch pipe 302). Next, the first valve 8 of the inlet pipe 6 is opened to inject a cooling medium or heating medium (e.g., for high-salt wastewater (low-temperature crystallization treatment), high-concentration organic wastewater treatment requires...) into the temperature-regulating tank 102. (The reaction is carried out at high temperature); then, the drive unit 9 is started, which drives the rotating rod 10 to rotate, thereby driving the agitator 11 to rotate, so as to use the rotating agitator 11 to mix the sewage and the agent, so that the sewage and the agent react to achieve sewage treatment; finally, the second valve 13 is opened, and the treated solid-liquid mixture is discharged through the discharge pipe 12 and filtered to achieve solid-liquid separation. The second valve 13 of the water outlet pipe 7 is opened so that the cooling medium or heating medium in the temperature regulating tank 102 is discharged through the water outlet pipe 7.

[0053] In summary, the stepped arrangement of multiple second branch pipes 302 at their outlet ends, compared to the existing method where the agent floats on top, offers a simpler structure and easier operation. This stepped arrangement allows the agent to penetrate wastewater at different locations, resulting in a stepped distribution of the agent within the mixing tank 1. This facilitates the reaction between the agent and impurities in the wastewater at different locations within the mixing tank 1, preventing impurities settled at the bottom of the mixing tank 1 from failing to react with the agent floating on top. This, in turn, improves wastewater treatment efficiency and effectiveness.

[0054] The above description is an explanation of the present utility model and not a limitation thereof. The scope of the present utility model is defined by the claims. Within the protection scope of the present utility model, any form of modification may be made.

Claims

1. A wastewater treatment device based on chemical dosing, characterized in that, include: Mixing tank (1), and The first feed pipe (2) passes through the mixing tank (1) and is connected to the mixing tank (1). The first feed pipe (2) is used to inject the sewage to be treated into the mixing tank (1). A second feed pipe (3) is used to inject the medicine into the mixing tank (1). The second feed pipe (3) includes: A first branch pipe (301) and a plurality of second branch pipes (302), the inlet end of the first branch pipe (301) extends to the outside of the mixing tank (1), the inlet end of the second branch pipe (302) is connected to the outlet end of the first branch pipe (301), the plurality of second branch pipes (302) are arranged in a ring at equal intervals, and the outlet ends of the plurality of second branch pipes (302) are arranged in a stepped manner; Wherein: the lengths of the multiple second branch pipes (302) are respectively d1, d2, ..., dn, where d1 < d2 < ... < dn.

2. The wastewater treatment device based on chemical dosing as described in claim 1, characterized in that: The first branch pipe (301) is connected to the top plate of the mixing tank (1), and the second branch pipe (302) is connected to the side wall of the mixing tank (1).

3. The wastewater treatment device based on chemical dosing as described in claim 1, characterized in that: Also includes: Multiple first buckles (4) are arranged in an equally spaced ring shape, and the first buckles (4) are located between two adjacent second branch pipes (302). The first buckles (4) are connected to the top plate of the mixing tank (1), and the first branch pipe (301) is snapped into the first buckle (4).

4. The wastewater treatment device based on chemical dosing as described in claim 1, characterized in that: Also includes: Multiple second buckles (5) are provided, each corresponding to one of the first branch pipes (301). The second buckles (5) are connected to the side wall of the mixing tank (1), and the second branch pipe (302) is engaged in the second buckle (5).

5. The wastewater treatment device based on chemical dosing as described in claim 1, characterized in that: The mixing tank (1) is provided with a sewage treatment tank (101) and a temperature regulating tank (102). The first feed pipe (2) and the second feed pipe (3) are both located inside the sewage treatment tank (101). The sewage treatment tank (101) is used for sewage treatment. The temperature regulating tank (102) is located outside the sewage treatment tank (101) and is used to inject cooling medium or heating medium to regulate the temperature inside the sewage treatment tank (101).

6. The wastewater treatment device based on chemical dosing as described in claim 5, characterized in that: Also includes: Water inlet pipe (6) and water outlet pipe (7) are installed on the mixing tank (1), and the water inlet pipe (6) and the water outlet pipe (7) are connected to the temperature regulating tank (102), and the water outlet pipe (7) is located below the water inlet pipe (6).

7. The wastewater treatment device based on chemical dosing as described in claim 6, characterized in that: Both the inlet pipe (6) and the outlet pipe (7) are equipped with a first valve (8).

8. The wastewater treatment device based on chemical dosing as described in claim 5, characterized in that: The top of the mixing tank (1) is provided with a stepped part (103) and a sealing cover (104). The stepped part (103) is connected to the top plate of the mixing tank (1). The stepped part (103) and the sealing cover (104) are connected by bolts. The sealing cover (104) is used to seal the sewage treatment tank (101). A sealing gasket (105) is provided on the outer peripheral surface of the sealing cover (104).

9. The wastewater treatment device based on chemical dosing as described in claim 8, characterized in that: Also includes: The device includes a drive unit (9), a rotating rod (10), and multiple stirring paddles (11). The drive unit (9) is mounted on the sealing cover (104). The rotating rod (10) passes through the sealing cover (104) and is connected to the drive end of the drive unit (9). The stirring paddles (11) are located inside the sewage treatment tank (101). Multiple stirring paddles (11) are connected to the rotating rod (10) and are distributed sequentially from top to bottom.

10. The wastewater treatment device based on chemical dosing as described in claim 1, characterized in that: The bottom of the mixing tank (1) is provided with a discharge pipe (12), and a second valve (13) is provided on the discharge pipe (12).

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