Sewage treatment plant tail water power station cell group

Abstract

The utility model discloses a sewage treatment plant tail water power station battery group belongs to sewage treatment field, including the open channel of the disinfection effluent of the collection sewage treatment line and the water distribution pool, the observation pool, the power station, the confluence well of all being located downstream of open channel, is provided with the overflow gate in the observation pool and is divided into the former section and the latter section with the observation pool, and the water inlet that communicates to the open channel is provided to the water distribution pool, and the water distribution pool is connected the power station and the former section respectively, and the effluent of the latter section and the power station is converged to the confluence well, the utility model discloses using the disinfection effluent of the open channel collection sewage treatment line, then flows to the water distribution pool, and a part of water in the water distribution pool directly enters the power station and consumes the gravitational potential energy and generates electricity, then flows to the confluence well, and the part of the power station that does not have time to accommodate flows to the former section, and the water for power generation is reserved to cope with the situation that the incoming water is less, when the incoming water flow is continuously large, the water in the former section flows to the latter section from the top of overflow gate, and the latter section directly enters the confluence well, and the sewage treatment line does not need to be shut down.

Description

Technical Field

[0001] This utility model relates to a wastewater treatment plant tailwater power generation pool group, belonging to the field of wastewater treatment. Background Technology

[0002] Currently, the Guangdong power grid is primarily a thermal power grid, with most power plants being coal-fired units, resulting in a relatively simple power supply structure. Hydropower is a clean energy source that, once operational, consumes no fuel resources, releases no pollutants or waste, and does not produce greenhouse gases that damage the atmospheric environment, thus contributing to environmental protection and representing a green and renewable energy source. Utilizing the gravitational potential energy of wastewater treatment plant effluent would facilitate resource recycling, providing a new approach to green, low-carbon, and high-quality urban development. Moreover, utilizing only the gravitational potential energy of the effluent would not affect the water quality of the wastewater treatment plant. The current challenge in using wastewater treatment plant effluent for power generation lies in balancing wastewater treatment capacity with generator consumption. Some wastewater treatment plants have uneven treatment volumes throughout the day; consequently, the generators cannot be designed for either minimum or maximum flow rates, but rather for a moderately high flow rate (e.g., 80% of the maximum treatment capacity of the wastewater treatment line). When the effluent flow rate is too low, sufficient power generation efficiency is difficult to achieve; when the effluent flow rate remains consistently high for extended periods, the wastewater treatment line needs to be shut down to accommodate power generation, causing inconvenience. Utility Model Content

[0003] In order to overcome the shortcomings of the existing technology, this utility model provides a wastewater treatment plant tailwater power generation pool group, which can provide a relatively stable water volume for tailwater power generation.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] This application provides a wastewater treatment plant tailwater power generation pool group, including an open channel for collecting disinfected effluent from the wastewater treatment line, and a distribution pool, an observation pool, a power station, and a confluence well, all located downstream of the open channel. The observation pool is equipped with an overflow gate to divide the observation pool into a front section and a rear section. The distribution pool is equipped with an inlet connected to the open channel. The distribution pool is connected to the power station and the front section respectively. The effluent from the rear section and the power station is merged into the confluence well.

[0006] The wastewater treatment plant tailwater power generation pool group provided in this application can provide a relatively stable water volume for tailwater power generation, ensuring power generation efficiency. When the flow rate of the wastewater treatment line is continuously high, there is no need to shut down the wastewater treatment line to accommodate the power plant's absorption capacity.

[0007] Furthermore, an electric butterfly valve is connected between the water distribution tank and the power station.

[0008] Electric butterfly valves are easy to operate and have a fast response time, making them convenient for remote control by staff. They allow staff to adjust the opening degree remotely based on the operation of the wastewater treatment line and the liquid level in the upstream section (if a level gauge is installed in the upstream section), maintaining high power generation efficiency. This further enhances the system's ability to cope with fluctuations in tailwater flow, making it easier to control the balance between wastewater treatment and power generation, and improving the stability and reliability of the entire tailwater power generation system.

[0009] Furthermore, a flow meter is connected between the open channel and the water distribution pool.

[0010] Measuring the flow rate here provides a reference for adjusting the electric butterfly valve. This allows operators to adjust the valve opening appropriately based on the flow rate and the power plant's generating capacity.

[0011] Furthermore, the bottom of the observation pool is provided with a gate slot for accommodating the overflow gate, and the overflow gate is movably connected in the gate slot.

[0012] The gate slot allows the overflow gate to move up and down or open and close flexibly within the slot. The gate slot's guiding function ensures the accuracy and stability of the overflow gate during operation, enabling precise control of the water flow distribution within the observation pool. This, in turn, coordinates with the operation of the diversion pool and power station, maintaining the stable operation of the entire tailrace power station system and ensuring the orderly conduct of wastewater treatment and power generation.

[0013] Furthermore, a pull ring is provided at the top of the overflow gate.

[0014] Furthermore, the connection point between the water distribution pool and the observation pool is higher than the outlet water level of the water distribution pool supplying water to the power station, and the outlet water level of the water distribution pool supplying water to the power station is higher than the inlet water.

[0015] This water level setting creates a natural water flow distribution mechanism. The water level supplied from the distribution pool to the power station is relatively high, ensuring that the power station has sufficient water pressure to drive the turbine generator units and improve power generation efficiency.

[0016] Furthermore, the outlet water level of the water supply from the water distribution pool to the power station is higher than half the depth of the water distribution pool.

[0017] Furthermore, the bottom of the open channel gradually slopes upward in the direction of water flow.

[0018] Furthermore, the bottom of the open channel is provided with multiple slopes that slope upwards in the direction of water flow.

[0019] Furthermore, the power station is equipped with a maintenance platform and a hydro-generator unit. The upper end of the hydro-generator unit is connected to the water distribution pool through a pipe extending from the top of the power station. The lower end of the hydro-generator unit is lower than the maintenance platform and drains water into the bottom of the power station. The power station is equipped with a water outlet for draining water into the confluence well. The water outlet is lower than the maintenance platform. The top of the power station is equipped with a maintenance entrance and a ventilation opening.

[0020] The beneficial effects of this utility model are as follows: This utility model utilizes an open channel to collect the disinfected effluent from the sewage treatment line, which then flows to a distribution tank. Part of the water in the distribution tank directly enters the power station to consume gravitational potential energy to generate electricity, and then flows to the confluence well. The part that the power station cannot consume in time flows to the front section to store water for power generation in order to cope with the situation of reduced water flow. When the water flow rate is continuously high, the water in the front section flows from the top of the overflow gate to the rear section, and then directly enters the confluence well from the rear section, without the need to shut down the sewage treatment line.

[0021] Other features and advantages of this application will be set forth in the following description and will be apparent in part from the description or may be learned by practicing the application. The objectives and other advantages of this application may be realized and obtained by means of the structures particularly pointed out in the written description and the accompanying drawings. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a wastewater treatment plant tailwater power generation pool group provided in an embodiment of this application.

[0023] Figure 2 This is a schematic diagram showing the relationship between the height and depth of a portion of the pool in a wastewater treatment plant tailwater power generation pool group, as provided in an embodiment of this application.

[0024] Figure 3 This is a schematic diagram of the observation pool.

[0025] Figure 4 This is a schematic diagram of an open channel.

[0026] Attached diagram labels: 1. Open channel; 11. Slope; 2. Diversion pool; 21. Inlet; 3. Observation pool; 31. Overflow gate; 311. Pull ring; 32. Front section; 33. Rear section; 34. Gate slot; 4. Power station; 41. Hydro-turbine generator set; 42. Maintenance platform; 43. Outlet; 44. Maintenance entrance; 45. Ventilation opening; 5. Manifold; 6. Flow meter; 7. Electric butterfly valve; 9. Ultraviolet disinfection pool. Detailed Implementation

[0027] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0028] The following disclosure provides many different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or reference letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0029] Reference Figure 1 and Figure 2 This application provides a wastewater treatment plant tailwater power generation pool group, including an open channel 1 that collects disinfected effluent from the wastewater treatment line, and a water distribution pool 2, an observation pool 3, a power station 4, and a confluence well 5, all located downstream of the open channel 1. The observation pool 3 is equipped with an overflow gate 31 that divides the observation pool 3 into a front section 32 and a rear section 33. The water distribution pool 2 is equipped with an inlet 21 that connects to the open channel 1. The water distribution pool 2 is connected to the power station 4 and the front section 32, respectively. The effluent from the rear section 33 and the power station 4 converges into the confluence well 5.

[0030] The end of the wastewater treatment line is typically an ultraviolet disinfection tank 9. In this embodiment, an open channel 1 is used to collect the disinfected effluent from the wastewater treatment line, providing a water source for subsequent processes. The open channel 1 serves as the initial stage, ensuring that the effluent enters the system stably and centrally. The inlet 21 connects to the open channel 1, and the diversion tank 2 plays a preliminary role in regulating and distributing the water flow. It connects to the power plant 4 and the front section 32, allowing the effluent to be diverted according to different needs. The overflow gate 31 in the observation tank 3 divides it into the front section 32 and the rear section 33. When the effluent flow rate is consistently high, the water in the front section 32 overflows into the rear section 33, bypassing the power plant 4. Figure 2 The circled A indicates that it is connected to the downstream section 33). The effluent from the downstream section 33 and the power station 4 is merged into the confluence well 5, realizing the centralized discharge of tailwater and meeting the regulatory requirement that a sewage treatment plant can only have one final outlet.

[0031] The various components of this application work together to solve the problems of wastewater collection, distribution, regulation, and final discharge, laying the foundation for balancing wastewater treatment capacity and generator absorption capacity. This enables the wastewater power generation system to operate in an orderly manner, ensuring wastewater treatment while rationally utilizing wastewater for power generation, effectively avoiding the problem of uncoordinated wastewater treatment and power generation due to unstable wastewater flow.

[0032] Preferably, a flow meter 6 is connected between the open channel 1 and the water distribution tank 2. An electric butterfly valve 7 is connected between the water distribution tank 2 and the power station 4.

[0033] Flow meter 6 measures the flow rate of tailwater flowing from open channel 1 into distribution tank 2 in real time. This allows staff to precisely control the opening of electric butterfly valve 7 based on the data from flow meter 6, thus controlling the flow rate of water supplied from distribution tank 2 to power plant 4. This directly affects how much remaining water can flow to upstream section 32 for storage. By combining flow meter 6 and electric butterfly valve 7, staff can more accurately and dynamically adjust the amount of water entering power plant 4 based on the actual tailwater flow rate. This ensures that power plant 4 has sufficient water to maintain power generation efficiency while also controlling the reserve water volume, greatly enhancing the system's ability to regulate flow changes and more effectively balancing wastewater treatment capacity and power generation consumption.

[0034] Reference Figure 3 In a preferred embodiment, the bottom of the observation pool 3 is provided with a gate slot 34 for accommodating the overflow gate 31, which is movably connected in the gate slot 34. This allows for stepless adjustment of the overflow height and the amount of water stored in the upstream section 32. When the tailwater flow rate is consistently high, the overflow gate 31 can be lowered, allowing more water to flow through the downstream section 33 to the confluence well 5 during peak periods, adapting to the power plant 4's absorption capacity without requiring the wastewater treatment line to shut down. After the peak period, when the flow rate begins to decline, the overflow gate 31 is raised to begin storing water for power generation.

[0035] Preferably, the top of the overflow gate 31 is provided with a pull ring 311, which facilitates the control of raising and lowering the overflow gate 31 by passing through ropes, mechanical hooks, etc.

[0036] In some embodiments, the connection point between the water distribution tank 2 and the observation tank 3 is higher than the outlet water level of the water distribution tank 2 supplying water to the power station 4, and the outlet water level of the water distribution tank 2 supplying water to the power station 4 is higher than the inlet 21. The water entering the water distribution tank 2 first meets the power generation needs of the power station 4, and the excess is retained in the front section 32. Preferably, the outlet water level of the water distribution tank 2 supplying water to the power station 4 is higher than half the depth of the water distribution tank 2, which can create a sedimentation environment to a certain extent and reduce the impact of sludge from the biological treatment tank and sand particles from the deep treatment tank carried by the tailwater on the generator impeller.

[0037] In some embodiments, such as Figure 4 As shown at point a, the bottom of open channel 1 gradually slopes upwards in the direction of water flow. Or, as... Figure 4 As shown at point b, the bottom of open channel 1 has multiple upward-sloping ramps 11 in the direction of water flow. Both of these structures are conducive to solid sedimentation. Although the chance of the effluent carrying sludge from the biological treatment tank and sand particles from the advanced treatment tank is low, it is still possible, and occasional impacts on the generator impeller can reduce the generator's lifespan. After sedimentation in open channel 1 and then in the diversion tank 2, this situation is largely avoided.

[0038] Specifically, the power station 4 is equipped with a maintenance platform and a 42-turbine generator set 41. The upper end of the turbine generator set 41 is connected to the water distribution pool 2 through a pipe passing through the top of the power station 4. The lower end of the turbine generator set 41 is lower than the maintenance platform 42 and drains water into the bottom of the power station 4. The power station 4 is equipped with a water outlet 43 that drains water into the confluence well 5. The water outlet 43 is lower than the maintenance platform 42. The top of the power station 4 is equipped with a maintenance entrance 44 and a ventilation opening 45.

[0039] Staff can access the maintenance platform 42 through the maintenance entrance 44. Below the maintenance platform 42 is a water accumulation area. The water is discharged to the manifold 5 through the outlet 43. The ventilation opening 45 can ensure air circulation in the power station, which helps to dissipate heat from the equipment and extend its service life. At the same time, the ventilation opening 45 can help balance the air pressure and ensure smooth drainage to the manifold 5.

[0040] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0041] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications are also considered to be within the protection scope of this utility model.

Claims

1. A wastewater treatment plant tailwater power generation pool group, characterized in that, The system includes an open channel (1) that collects the disinfected effluent from the sewage treatment line, and a water distribution pool (2), an observation pool (3), a power station (4), and a confluence well (5) located downstream of the open channel (1). The observation pool (3) is equipped with an overflow gate (31) that divides the observation pool (3) into a front section (32) and a rear section (33). The water distribution pool (2) is equipped with an inlet (21) that connects to the open channel (1). The water distribution pool (2) is connected to the power station (4) and the front section (32) respectively. The effluent from the rear section (33) and the power station (4) is merged into the confluence well (5).

2. The wastewater treatment plant tailwater power generation pool group according to claim 1, characterized in that, A flow meter (6) is connected between the open channel (1) and the water distribution pool (2).

3. The wastewater treatment plant tailwater power generation pool group according to claim 1, characterized in that, An electric butterfly valve (7) is connected between the water distribution tank (2) and the power station (4).

4. The wastewater treatment plant tailwater power generation pool group according to claim 1, characterized in that, The bottom of the observation pool (3) is provided with a gate slot (34) for accommodating the overflow gate (31), and the overflow gate (31) is movably connected in the gate slot (34).

5. The wastewater treatment plant tailwater power generation pool group according to claim 4, characterized in that, The top of the overflow gate (31) is provided with a pull ring (311).

6. The wastewater treatment plant tailwater power generation pool group according to claim 1, characterized in that, The connection between the water distribution pool (2) and the observation pool (3) is higher than the water outlet level of the water distribution pool (2) supplying water to the power station (4), and the water outlet level of the water distribution pool (2) supplying water to the power station (4) is higher than the water inlet (21).

7. The wastewater treatment plant tailwater power generation pool group according to claim 1, characterized in that, The outlet water level of the water supply pool (2) to the power station (4) is higher than half the depth of the water supply pool (2).

8. The wastewater treatment plant tailwater power generation pool group according to claim 1, characterized in that, The bottom of the open channel (1) gradually slopes upward in the direction of water flow.

9. The wastewater treatment plant tailwater power generation pool group according to claim 1, characterized in that, The bottom of the open channel (1) is provided with multiple slopes (11) that slope upward in the direction of water flow.

10. The wastewater treatment plant tailwater power generation pool group according to claim 1, characterized in that, The power station (4) is equipped with a maintenance platform (42) and a water turbine generator set (41). The upper end of the water turbine generator set (41) is connected to the water distribution pool (2) through a pipe that passes through the top of the power station (4). The lower end of the water turbine generator set (41) is lower than the maintenance platform (42) and drains water into the bottom of the power station (4). The power station (4) is equipped with a water outlet (43) that drains water into the confluence well (5). The water outlet (43) is lower than the maintenance platform (42). The top of the power station (4) is equipped with a maintenance entrance (44) and a ventilation opening (45).

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