Ecological treatment system for treating up-to-standard tail water of urban sewage treatment plant

Abstract

The utility model discloses an ecological treatment system for treating up-to-standard tail water of an urban sewage treatment plant, which comprises an ecological purification area and an ecological treatment area, the ecological treatment area comprises rammed plain soil, an impermeable membrane is arranged on the upper layer of the rammed plain soil, compacted clay is arranged on the upper layer of the impermeable membrane, and a perforated water distribution pipe is arranged on the upper layer of the compacted clay. A first filler layer is arranged on the perforated water distribution pipe, a second filler layer is arranged on the first filler layer, and a free water surface is arranged on the second filler layer; aquatic plants are arranged in the free water surface, an ecological floating island is arranged in the free water surface, and intelligent aeration systems are arranged in the ecological purification area and the ecological treatment area; a water distribution pipe is arranged in the ecological water outlet area, and the wetland system is aerated as required by monitoring the content of dissolved oxygen in the constructed wetland in real time, so that low-carbon, stable and efficient operation of the ecological wetland system is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of tail water treatment, in particular to an ecological treatment system for treating tail water in urban sewage treatment plants that meets standards. Background Art

[0002] Currently, some urban sewage treatment plants are constructing artificial ecological purification systems at the end of their treatment plants to further purify tailwater that meets standards, acting as urban "water purifiers." Purified wetland water is used to replenish river flows, for landscaping, and for farmland irrigation. However, artificial ecological wetland systems are significantly affected by factors such as temperature, influent load, and hydraulic retention time. As a result, some artificial wetland systems have performed poorly in their later stages, failing to achieve ideal performance. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art by providing an ecological treatment system for treating qualified tailwater from urban sewage treatment plants. This device not only effectively purifies qualified tailwater from urban sewage treatment plants, transforming qualified tailwater from "engineering water" to "ecological water," but also enhances the biodiversity of the river channel receiving the qualified tailwater and improves the self-purification capacity of the river water, which is of great significance for protecting the ecological environment. It also combines intelligent aeration, ecological treatment, and online monitoring technologies to optimize and adjust the operating parameters of the artificial wetland system by real-time monitoring of the hydraulic conditions and water quality of the outlet area. An intelligent aeration system is added to aerate the wetland system on demand by real-time monitoring of the dissolved oxygen content in the artificial wetland, ensuring the low-carbon, stable, and efficient operation of the ecological wetland system. The coordination of the ball valve, outlet pipe, motor, rotating shaft, and rotating rod allows for better control of the outlet flow rate, achieving precise flow control to meet process requirements, and enabling rapid opening and closing, facilitating real-time flow adjustment to adapt to instantaneous demand changes, thereby reducing unnecessary water waste and saving energy and costs.

[0004] The utility model also provides an ecological treatment system for treating tail water of an urban sewage treatment plant that meets the standards, comprising: an ecological purification area and an ecological treatment area, wherein the ecological treatment area comprises rammed earth, the upper layer of the rammed earth has an impermeable membrane, the upper layer of the impermeable membrane has compacted clay, the upper layer of the compacted clay has a perforated water distribution pipe, the upper layer of the perforated water distribution pipe has a first filler layer, the upper layer of the first filler layer has a second filler layer, and the upper layer of the second filler layer has a free water surface; aquatic plants are arranged in the free water surface, an ecological floating island is arranged in the free water surface, and an intelligent aeration system is arranged in the ecological purification area and the ecological treatment area; an ecological water outlet area, a water distribution pipe is arranged in the ecological water outlet area, an outlet pipe is arranged on the ecological water outlet area, the outer surface of the outlet pipe is fixedly connected to a second water pump, a ball valve is arranged in the water outlet pipe, the outer surface of the ball valve is fixedly connected to a rotating rod, the outer surface of the rotating rod is fixedly connected to a rotating shaft, and the outer surface of the rotating shaft is fixedly connected to a motor. Servers are set up outside the ecological purification area and the ecological outlet area. This device can not only effectively purify the qualified tail water of urban sewage treatment plants, realize the transformation of qualified tail water of sewage treatment plants from "engineering water" to "ecological water", enhance the biodiversity of the river receiving the qualified tail water, and enhance the self-purification capacity of the river water body, which is of great significance for protecting the ecological environment; it combines intelligent aeration, ecological treatment, online monitoring and other technologies, and optimizes and adjusts the operating parameters of the artificial wetland system through real-time monitoring of the hydraulic conditions and water quality of the outlet area; adds an intelligent aeration system, and realizes on-demand aeration of the wetland system through real-time monitoring of the dissolved oxygen content in the artificial wetland, ensuring the low-carbon, stable and efficient operation of the ecological wetland system; through the coordination of the ball valve, outlet pipe, motor, rotating shaft and rotating rod, the outlet flow rate can be better controlled, precise flow control can be achieved, process requirements can be met, and fast opening and closing can be achieved, which is conducive to real-time flow adjustment and adaptation to instantaneous demand changes, helping to reduce unnecessary waste of water resources and save energy and costs.

[0005] According to the utility model, an ecological treatment system for treating tailwater that meets the standards of urban sewage treatment plants is provided. A first water pump is provided in the ecological purification area, the ecological treatment area and the ecological outlet area. Electric regulating valves are provided in the ecological purification area and the ecological outlet area to facilitate control of water inlet and outlet.

[0006] According to the ecological treatment system for treating tailwater that meets standards in urban sewage treatment plants described in the utility model, the rotating rod is rotatably connected to the outlet pipe, and a sealing bearing is provided at the connection between the rotating rod and the outlet pipe to ensure a sealing effect.

[0007] According to the ecological treatment system for treating tailwater that meets the standards of a municipal sewage treatment plant described in the utility model, the first filler layer is composed of large particles and the second filler layer is composed of small particles, which can improve the treatment effect.

[0008] According to the ecological treatment system for treating tailwater that meets the standards of urban sewage treatment plants described in the utility model, the upper layer of the ecological floating island is aquatic plants, and the lower layer of the ecological floating island is filler, which can ensure the treatment effect of the ecological safety buffer zone.

[0009] According to the ecological treatment system for treating tailwater in urban sewage treatment plants that meets standards described in the utility model, the server includes a DOC control host, an analog output interface, a digital output interface, a digital input interface, and an analog input interface, and the DOC control host is connected to a main backup power supply.

[0010] According to the utility model, an ecological treatment system for treating tailwater that meets the standards of urban sewage treatment plants is provided with liquid level sensors in the ecological purification area, the ecological treatment area and the ecological effluent area, and a flow sensor is provided in the ecological purification area; a pH sensor, a chemical oxygen demand sensor, an ammonia nitrogen sensor and a total phosphorus sensor are provided in the ecological effluent area, and a dissolved oxygen sensor is provided in the ecological purification area and the ecological treatment area, so as to control the water inlet flow and hydraulic retention time of the wetland system, enable the system to operate under lower hydraulic load conditions, and effectively ensure the operation effect of the wetland.

[0011] According to the ecological treatment system for treating tailwater that meets the standards of urban sewage treatment plants described in the utility model, the analog output interface is connected to two sets of electric regulating valves, and the analog input interface is connected to a flow sensor, a dissolved oxygen sensor, a pH sensor, a chemical oxygen demand sensor, an ammonia nitrogen sensor, and a total phosphorus sensor. This can maintain a high concentration of dissolved oxygen in the water environment around the root system, providing the required oxygen for the growth and reproduction of aerobic microorganisms growing on the surface of fillers such as gravel and the degradation of organic pollutants.

[0012] According to the ecological treatment system for treating qualified tailwater from urban sewage treatment plants described in the utility model, the digital input interface is connected to a liquid level sensor, and the digital output interface is connected to three first water pumps and an intelligent aeration system. The hydraulic conditions and water quality of the outlet area are monitored in real time to optimize and adjust the operating parameters of the artificial wetland system. An intelligent aeration system is added to achieve on-demand aeration of the wetland system by real-time monitoring of the dissolved oxygen content in the artificial wetland, thereby ensuring low-carbon, stable and efficient operation of the ecological wetland system.

[0013] Beneficial effects

[0014] 1. Compared with the existing technology, this new ecological treatment system for treating the tailwater of urban sewage treatment plants that meet the standards can not only effectively purify the tailwater of urban sewage treatment plants that meet the standards, and transform the tailwater of sewage treatment plants that meet the standards from "engineering water" to "ecological water", but also enhance the biodiversity of the rivers that receive the tailwater and improve the self-purification capacity of the river water, which is of great significance for protecting the ecological environment.

[0015] 2. Compared with existing technologies, this new ecological treatment system for the treatment of effluent from urban sewage treatment plants that meets standards combines technologies such as intelligent aeration, ecological treatment, and online monitoring. It optimizes and adjusts the operating parameters of the artificial wetland system by real-time monitoring of the hydraulic conditions and water quality of the outlet area. An intelligent aeration system is added to achieve on-demand aeration of the wetland system by real-time monitoring of the dissolved oxygen content in the artificial wetland, ensuring the low-carbon, stable and efficient operation of the ecological wetland system.

[0016] 3. Compared with the existing technology, this new ecological treatment system for the treatment of tailwater that meets the standards of urban sewage treatment plants can better control the flow rate of the outlet water through the cooperation of the ball valve, outlet pipe, motor, rotating shaft and rotating rod, and can achieve precise flow control to meet process requirements. It can achieve rapid opening and closing, which is conducive to real-time flow adjustment and adapting to instantaneous demand changes, helping to reduce unnecessary waste of water resources and save energy and costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0018] Figure 1 This is a cross-sectional structural diagram of the ecological treatment system of the utility model for treating tailwater in urban sewage treatment plants that meets standards;

[0019] Figure 2 This is a side view of the outlet pipe connection structure of the ecological treatment system for treating tailwater in urban sewage treatment plants that meets standards;

[0020] Figure 3 This is a top view of the outlet pipe connection structure of the ecological treatment system for treating tailwater in urban sewage treatment plants that meets standards;

[0021] Figure 4 This is a control system diagram of the ecological treatment system of the utility model for the ecological treatment system used for the treatment of tail water that meets the standards of urban sewage treatment plants.

[0022] Legend:

[0023] 1. Ecological purification area; 2. Ecological treatment area; 3. Ecological outlet area; 4. Intelligent aeration system; 5. Outlet pipe; 6. Server; 7. Second water pump; 8. Soil tamping; 9. Anti-seepage membrane; 10. Compacted clay; 11. Perforated water distribution pipe; 12. First packing layer; 13. Second packing layer; 14. Free water surface; 15. Aquatic plants; 16. Ecological floating island; 17. Ball valve; 18. Water distribution pipe; 19. Rotating shaft; 20. Motor; 21. Rotating rod. DETAILED DESCRIPTION

[0024] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0025] Reference Figure 1-4 The embodiment of the present invention is an ecological treatment system for treating the tail water of a municipal sewage treatment plant that meets the standards, which comprises: an ecological purification area 1 and an ecological treatment area 2. The ecological treatment area 2 comprises a rammed earth 8, an impermeable membrane 9 is provided on the upper layer of the rammed earth 8, a compacted clay 10 is provided on the upper layer of the impermeable membrane 9, a perforated water distribution pipe 11 is provided on the upper layer of the compacted clay 10, a first filler layer 12 is provided on the upper layer of the perforated water distribution pipe 11, a second filler layer 13 is provided on the upper layer of the first filler layer 12, and a free water surface 14 is provided on the upper layer of the second filler layer 13; aquatic plants 15 are provided in the free water surface 14, an ecological floating island 16 is provided in the free water surface 14, an intelligent aeration system 4 is provided in the ecological purification area 1 and the ecological treatment area 2; an ecological outlet area 3, a water distribution pipe 18 is provided in the ecological outlet area 3, an ecological An outlet pipe 5 is provided on the outlet area 3, and a second water pump 7 is fixedly connected to the outer surface of the outlet pipe 5. A ball valve 17 is provided in the outlet pipe 5, and a rotating rod 21 is fixedly connected to the outer surface of the rotating rod 21, and a rotating shaft 19 is fixedly connected to the outer surface of the rotating shaft 19. A motor 20 is fixedly connected. A server 6 is provided outside the ecological purification area 1 and the ecological outlet area 3. On the basis of laying an anti-seepage layer, the lower part of the purification area of ​​the ecological purification pool is filled with porous ecological filter material to absorb impurities and suspended matter in the tail water, further reduce the turbidity of the water body, and prevent subsequent artificial wetland ecosystems from being blocked. At the same time, an intelligent micro-nano aerator is installed in the purification area to realize on-demand aeration, which can not only effectively reduce the residual chlorine in the tail water and increase the oxygen content in the water, but also achieve low-carbon and energy-saving effects.

[0026] A first water pump is provided in the ecological purification area 1, the ecological treatment area 2, and the ecological outlet area 3. An electric regulating valve is provided in the ecological purification area 1 and the ecological outlet area 3. The rotating rod 21 is rotatably connected to the outlet pipe 5. A sealed bearing is provided at the connection between the rotating rod 21 and the outlet pipe 5. The first filler layer 12 is large particles, and the second filler layer 13 is small particles. The upper layer of the ecological floating island 16 is aquatic plants 15, and the lower layer of the ecological floating island 16 is filler, which can maintain a high concentration of dissolved oxygen in the water environment around the root system, supplying the growth and reproduction of aerobic microorganisms growing on the surface of fillers such as gravel and the degradation of organic pollutants.

[0027] The server 6 includes a DOC control host, an analog output interface, a digital output interface, a digital input interface, and an analog input interface. The DOC control host is connected to a main backup power supply. Liquid level sensors are provided in the ecological purification area 1, the ecological treatment area 2, and the ecological outlet area 3. A flow sensor is provided in the ecological purification area 1; a pH sensor, a chemical oxygen demand sensor, an ammonia nitrogen sensor, and a total phosphorus sensor are provided in the ecological outlet area 3. A dissolved oxygen sensor is provided in the ecological purification area 1 and the ecological treatment area 2. The analog output interface is connected to two sets of electric regulating valves, and the analog input interface is connected to the flow sensor, dissolved oxygen sensor, pH sensor, chemical demand sensor, etc. The oxygen sensor, ammonia nitrogen sensor, and total phosphorus sensor are connected, the digital input interface is connected to the liquid level sensor, and the digital output interface is connected to the three first water pumps and the intelligent aeration system 4. Dissolved oxygen (DO) sensors are arranged in the ecological purification area and the ecological treatment area to monitor the dissolved oxygen content in the two areas in real time. When the dissolved oxygen content in the water body is low, the micro-aeration system is started intelligently to improve the distribution of oxygen in the wetland system, form a strong oxidizing environment, and improve the wetland system's ability to purify pollutants. In the ecological outlet area, four sensors, pH, chemical oxygen demand (CODcr), ammonia nitrogen (NH3-N), and total phosphorus (TP), are used to monitor the water quality in real time (such as Figure 1 (as shown), the ecological wetland system operating parameters are optimized and adjusted based on the effluent water quality. Liquid level and flow sensors are used to monitor the water level and flow in the ecological purification area in real time. Especially in winter, under low temperatures, the inflow flow and hydraulic retention time of the wetland system are controlled to operate the system under low hydraulic load conditions, effectively ensuring the wetland's operational effectiveness.

[0028] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. An ecological treatment system for treating tailwater in urban sewage treatment plants, characterized in that: include: An ecological purification zone (1) and an ecological treatment zone (2), wherein the ecological treatment zone (2) comprises a rammed earth (8), an impermeable membrane (9) is provided on the upper layer of the rammed earth (8), a compacted clay (10) is provided on the upper layer of the impermeable membrane (9), a perforated water pipe (11) is provided on the upper layer of the compacted clay (10), a first filler layer (12) is provided on the upper layer of the perforated water pipe (11), a second filler layer (13) is provided on the upper layer of the first filler layer (12), and a free water surface (14) is provided on the upper layer of the second filler layer (13); aquatic plants (15) are provided in the free water surface (14), an ecological floating island (16) is provided in the free water surface (14), and an intelligent aeration system (4) is provided in the ecological purification zone (1) and the ecological treatment zone (2); An ecological water outlet area (3) is provided with a water distribution pipe (18) in the ecological water outlet area (3), a water outlet pipe (5) is provided on the ecological water outlet area (3), a second water pump (7) is fixedly connected to the outer surface of the water outlet pipe (5), a ball valve (17) is provided in the water outlet pipe (5), a rotating rod (21) is fixedly connected to the outer surface of the ball valve (17), a rotating shaft (19) is fixedly connected to the outer surface of the rotating rod (21), a motor (20) is fixedly connected to the outer surface of the rotating shaft (19), and a server (6) is provided outside the ecological purification area (1) and the ecological water outlet area (3).

2. The ecological treatment system for treating tailwater from a municipal sewage treatment plant according to claim 1, characterized in that: A first water pump is provided in the ecological purification area (1), the ecological treatment area (2), and the ecological water outlet area (3), and an electric regulating valve is provided in the ecological purification area (1) and the ecological water outlet area (3).

3. The ecological treatment system for treating tailwater in urban sewage treatment plants according to claim 1, characterized in that: The rotating rod (21) is rotatably connected to the water outlet pipe (5), and a sealed bearing is provided at the connection between the rotating rod (21) and the water outlet pipe (5).

4. The ecological treatment system for treating tailwater from a municipal sewage treatment plant according to claim 1, characterized in that: The first filler layer (12) is composed of large particles, and the second filler layer (13) is composed of small particles.

5. The ecological treatment system for treating tailwater from a municipal sewage treatment plant according to claim 1, characterized in that: The upper layer of the ecological floating island (16) is composed of aquatic plants (15), and the lower layer of the ecological floating island (16) is composed of fillers.

6. The ecological treatment system for treating tailwater from a municipal sewage treatment plant according to claim 1, characterized in that: The server (6) comprises a DOC control host, an analog output interface, a digital output interface, a digital input interface, and an analog input interface, and the DOC control host is connected to a main backup power supply.

7. The ecological treatment system for treating tailwater in urban sewage treatment plants according to claim 1, characterized in that: Liquid level sensors are provided in the ecological purification area (1), the ecological treatment area (2), and the ecological outlet area (3); a flow sensor is provided in the ecological purification area (1); a pH sensor, a chemical oxygen demand sensor, an ammonia nitrogen sensor, and a total phosphorus sensor are provided in the ecological outlet area (3); and a dissolved oxygen sensor is provided in the ecological purification area (1) and the ecological treatment area (2).

8. The ecological treatment system for treating tailwater from a municipal sewage treatment plant according to claim 6, characterized in that: The analog output interface is connected to two sets of electric regulating valves, and the analog input interface is connected to a flow sensor, a dissolved oxygen sensor, a pH sensor, a chemical oxygen demand sensor, an ammonia nitrogen sensor, and a total phosphorus sensor.

9. The ecological treatment system for treating tailwater in urban sewage treatment plants according to claim 6, characterized in that: The digital input interface is connected to the liquid level sensor, and the digital output interface is connected to the three first water pumps and the intelligent aeration system (4).

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