An integrated carbon source capture device

Abstract

This utility model relates to an integrated carbon source capture device, including a reaction tank, a stirrer, a partition plate, a plate membrane, and a one-way valve. The partition plate is fixed in the middle of the reaction tank and divides the reaction tank into a coagulation zone and a sedimentation zone. A one-way valve is provided on the partition plate to connect the coagulation zone and the sedimentation zone, and the flow direction of the one-way valve is from the coagulation zone to the sedimentation zone. An inlet pipe connecting to the coagulation zone is provided on the side wall of the reaction tank, and an outlet pipe connecting to the sedimentation zone is also provided on the side wall of the reaction tank. The stirrer is fixed to the top of the coagulation zone by a bracket. The plate membrane is placed in the sedimentation zone, and the outlet end of the plate membrane is connected to the outlet pipe. This utility model has an integrated structure, which is relatively simple in overall structure, easy to construct and maintain, improves the organic matter retention rate at the front end of the wastewater, and ensures the stable operation of the subsequent low C / N ratio denitrification process.

Description

Technical Field

[0001] This utility model relates to an integrated carbon source capture device, belonging to the field of wastewater resource utilization technology. Background Technology

[0002] Driven by the concepts of high-quality development and carbon neutrality, wastewater treatment plants are shifting away from the traditional "energy-consuming" approach and upgrading from simply removing pollutants to achieving high efficiency and low energy consumption in wastewater treatment. Developing economical and efficient wastewater treatment technologies has become a key research focus in the field of water pollution control engineering, and how to achieve efficient recovery and utilization of carbon sources from wastewater is one of the hot topics.

[0003] Currently, wastewater carbon source capture methods typically involve capturing particulate, colloidal, and dissolved organic matter in wastewater through sludge flocculation and adsorption, thereby maximizing the capture, enrichment, and separation of organic carbon sources in wastewater.

[0004] In traditional integrated wastewater carbon source capture devices, the coagulation zone and sedimentation zone are usually directly connected or not completely separated, which may lead to back mixing of the coagulated solution and precipitate, reducing sedimentation efficiency and water quality, and affecting carbon source capture efficiency. Therefore, improvements are urgently needed. Utility Model Content

[0005] To overcome the problem that existing integrated devices do not completely separate the reaction zone and precipitation zone, resulting in the mixing of solution and precipitate after the reaction and reducing the precipitation effect, this invention designs an integrated carbon source capture device with a relatively simple structure that is easy to build and maintain.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: An integrated carbon source capture device includes a reaction tank, a stirrer, a partition plate, a plate membrane, and a one-way valve. The partition plate is fixed in the middle of the reaction tank and divides the reaction tank into a coagulation zone and a sedimentation zone. A one-way valve is provided on the partition plate to connect the coagulation zone and the sedimentation zone, and the flow direction of the one-way valve is from the coagulation zone to the sedimentation zone. An inlet pipe connecting the coagulation zone is provided on the side wall of the reaction tank, and an outlet pipe connecting the sedimentation zone is also provided on the side wall of the reaction tank. The stirrer is fixed to the top of the coagulation zone by a bracket. The plate membrane is placed in the sedimentation zone, and the outlet end of the plate membrane is connected to the outlet pipe.

[0007] Furthermore, an annular gas distribution pipe is installed at the top of the coagulation zone. The annular gas distribution pipe includes an annular pipe, several air inlet pipes, and several evenly distributed guide holes. The annular pipe includes multiple non-interconnected arc-shaped pipes, each of which is connected to an air inlet pipe. The guide holes are evenly arranged at the bottom of the arc-shaped pipes and are connected to the inside of the reaction tank. The air inlet pipes are connected to a nitrogen supply device.

[0008] Furthermore, a water pump is installed on the outlet pipe.

[0009] Furthermore, the plate membrane is a modular MBR membrane.

[0010] Furthermore, the internal liquid levels in both the coagulation and sedimentation zones are lower than the height of the partition plates.

[0011] Compared with the prior art, this utility model has the following features and beneficial effects: This invention reduces downtime required for replacing plate membranes by using modular MBR membranes, thus improving operation and maintenance efficiency. Utilizing chemical coagulants and fine filtration devices, the concentration of chemical coagulants, the pore size of the filtration device, and the hydraulic retention time can be adjusted according to the actual influent, improving the organic matter retention rate at the wastewater front end and ensuring stable operation of the subsequent low C / N ratio denitrification process. By setting up partition plates and one-way valves to control the liquid level in the reaction tank, this invention solves the problem of back-mixing of the coagulated solution and precipitate due to direct connection or incomplete separation between the coagulation and sedimentation zones, which reduces sedimentation efficiency and water quality, and affects carbon source capture efficiency. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the annular gas distribution pipe structure of this utility model.

[0013] The attached diagram is labeled as follows: 1. Reaction tank; 2. Agitator; 3. Inlet pipe; 4. Baffle plate; 5. Plate membrane; 6. Outlet pipe; 7. Coagulation zone; 8. Sedimentation zone; 9. Check valve; 10. Circular pipe; 11. Air inlet pipe; 12. Guide hole. Detailed Implementation

[0014] The present invention will now be described in more detail with reference to the embodiments.

[0015] like Figure 1 As shown, the integrated carbon source capture device of this embodiment includes a reaction tank 1, a stirrer 2, a partition plate 4, a plate membrane 5, and a one-way valve 9. The partition plate 4 is fixed in the middle of the reaction tank 1 and divides the reaction tank 1 into a coagulation zone 7 and a sedimentation zone 8. A one-way valve 9 is provided on the partition plate 4 to connect the coagulation zone 7 and the sedimentation zone 8, and the flow direction of the one-way valve 9 is from the coagulation zone 7 to the sedimentation zone 8.

[0016] The reaction tank 1 is rectangular. By setting up a partition plate 4, the problem of incomplete separation between the coagulation zone 7 and the sedimentation zone 8 in traditional integrated devices, resulting in mixing of the solution and precipitate after the reaction and reducing the sedimentation effect, is solved. By setting up a one-way valve 9, the supernatant after sufficient reaction and sedimentation is allowed to enter the sedimentation zone 8 from the coagulation zone 7. By controlling the internal liquid level of the coagulation zone 7 and the sedimentation zone 8 to be lower than the height of the partition plate 4, and by installing the one-way valve 9 at a certain height on the partition plate 4, the impurity layer after sedimentation in the coagulation zone 7 is prevented from entering the sedimentation zone 8.

[0017] The side wall of the reaction tank 1 is provided with an inlet pipe 3 that connects to the coagulation zone 7, and the side wall of the reaction tank 1 is also provided with an outlet pipe 6 that connects to the sedimentation zone 8; the agitator 2 is fixed to the top of the coagulation zone 7 by a bracket.

[0018] Plate membrane 5 is installed in sedimentation zone 8, and the outlet end of plate membrane 5 is connected to outlet pipe 6. Plate membrane 5 is a modular MBR membrane with a pore size of 40-80μm. By setting up MBR membrane, the pollutants remaining in sedimentation zone 8 are intercepted by physical sieving, and the wastewater is filtered again. The modular structure reduces the downtime required to replace plate membrane 5 and improves operation and maintenance efficiency.

[0019] During the stirring process, the speed of stirrer 2 is controlled to a level that is sufficiently uniform but does not cause strong turbulence on the liquid surface, in order to prevent more oxygen from dissolving into the water.

[0020] A water pump is installed on the outlet pipe 6. The water pump draws the clean water that has been filtered from bottom to top by the plate membrane 5 in the sedimentation zone 8 and discharges it into the outlet pipe 6 above.

[0021] An annular gas distribution pipe is provided at the top of the coagulation zone 7. The annular gas distribution pipe includes an annular pipe 10, several air inlet pipes 11, and several evenly distributed guide holes 12. The annular pipe 10 includes multiple arc-shaped pipes that are not interconnected. Each arc-shaped pipe is connected to an air inlet pipe 11. The guide holes 12 are evenly arranged at the bottom of the arc-shaped pipes and are connected to the inside of the reaction tank 1. The air inlet pipes 11 are connected to a nitrogen supply device. Nitrogen is introduced into the air inlet pipes 11, and nitrogen is continuously introduced into the coagulation zone 7 through the guide holes 12.

[0022] By setting up an annular gas distribution pipe 10, the nitrogen gas introduced into the coagulation zone 7 is evenly distributed in the space above the liquid surface of the coagulation zone 7. The nitrogen gas introduced into the coagulation zone 7 replaces the oxygen, preventing the carbon source from being consumed by aerobic microorganisms and increasing the captured COD content.

[0023] The working principle of this utility model: Wastewater enters the coagulation zone 7 through the inlet pipe 3. Coagulant is added to the coagulation zone 7, and after thorough mixing and stirring by the agitator 2, sedimentation occurs. When the pressure in the coagulation zone 7 reaches the opening pressure set by the check valve 9, sedimentation ends, the check valve 9 opens, and the supernatant after sedimentation enters the sedimentation zone 8.

[0024] The water pump draws water from the sedimentation zone 8 from bottom to top through the plate membrane 5. The clean water filtered by the plate membrane 5 is then discharged through the upper outlet pipe 6.

[0025] In the description of this utility model, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and 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 this utility model.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

Claims

1. An integrated carbon source capture device, characterized by: The reaction tank (1), agitator (2), partition plate (4), plate membrane (5) and check valve (9) are included. The partition plate (4) is fixed in the middle of the reaction tank (1) and the partition plate (4) divides the reaction tank (1) into a coagulation zone (7) and a sedimentation zone (8). A check valve (9) connecting the coagulation zone (7) and the sedimentation zone (8) is provided on the partition plate (4), and the flow direction of the check valve (9) is from the coagulation zone (7) to the sedimentation zone (8). The side wall of the reaction tank (1) is provided with an inlet pipe (3) that connects to the coagulation zone (7), and the side wall of the reaction tank (1) is also provided with an outlet pipe (6) that connects to the sedimentation zone (8). The agitator (2) is fixed to the top of the coagulation zone (7) by a bracket; The plate membrane (5) is set in the sedimentation zone (8), and the outlet end of the plate membrane (5) is connected to the outlet pipe (6).

2. The integrated carbon capture device of claim 1, wherein: The top of the coagulation zone (7) is provided with an annular gas distribution pipe, which includes an annular pipe (10), several air inlet pipes (11) and several evenly distributed guide holes (12); the annular pipe (10) includes multiple arc-shaped pipes that are not interconnected, each arc-shaped pipe is connected to an air inlet pipe (11), the guide holes (12) are evenly arranged at the bottom of the arc-shaped pipes and are connected to the inside of the reaction tank (1), and the air inlet pipes (11) are connected to a nitrogen supply device.

3. The integrated carbon capture device of claim 1, wherein: A water pump is installed on the outlet pipe (6).

4. The integrated carbon capture device of claim 1, wherein: The plate membrane (5) is a modular MBR membrane.

5. The integrated carbon capture device of claim 1, wherein: The internal liquid height of both the coagulation zone (7) and the sedimentation zone (8) is lower than the height of the partition plate (4).

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