A river rainwater discharge port purification module

Abstract

The utility model discloses a kind of for river rainwater discharge mouth purification module, it is related to municipal environmental engineering technical field, solve the technical problem that current rainwater discharge mouth purification treatment device function is single, and purification effect is not good;Including module frame structure, side surface is set into water inlet;Filter membrane, install in water inlet;Partition, be arranged in module frame structure inside for the module frame structure inside is separated into two parts of upper and lower intercommunication, the upper packing layer of the partition is provided with, the lower packing layer of the partition is equipped with;Aeration system, be arranged between the bottom of module frame structure and lower packing layer, for into oxygen to module frame structure inside;The utility model is good to the purification effect of rainwater discharge mouth, can realize modularization installation, construction is simple, land area is small, operation management is convenient, can quickly reduce rainwater and other non-point pollution source, improve rainwater discharge mouth water quality, effectively avoid river water quality deterioration.

Description

Technical Field

[0001] This utility model relates to the field of municipal environmental engineering technology, specifically to a purification module for river stormwater outfalls. Background Technology

[0002] Stormwater outfalls are a method of collecting polluted water bodies such as surface runoff and agricultural runoff before directly discharging them into rivers. Pollution from the outflow of wastewater from interconnected stormwater and sewage pipe networks constitutes a major source of urban water pollution load and is one of the main reasons why the water quality of rivers and lakes in my country has not fundamentally improved over the long term. Prioritizing the control and management of runoff pollution is a crucial issue that urgently needs to be addressed in my country's current water environment remediation efforts.

[0003] Currently, common methods for managing stormwater outfalls include installing intercepting wells, implementing stormwater and sewage separation systems, repairing drainage pipes, and modifying stormwater outfalls. Intercepting wells can intercept some initial rainwater pollution, but the remaining unintercepted rainwater is discharged directly into rivers, causing further pollution and deteriorating water quality. While stormwater and sewage separation systems and drainage pipe repairs can comprehensively and thoroughly resolve the mixing of rainwater and sewage, they do not purify the rainwater and fail to address the issue of pollution entering rivers.

[0004] In addition, most existing rainwater outfall modification technologies involve simple modifications to the outfalls, adding simple treatment measures such as gravel fillers and aquatic plants. These technologies have limited functionality and poor treatment effects, and pollutants entering the river can easily cause water quality deterioration. Therefore, a rainwater outfall purification module for rivers is proposed. Utility Model Content

[0005] This invention aims to solve the technical problems of existing rainwater outfall purification devices having limited functions and poor purification effects. The purpose is to provide a purification module for river rainwater outfalls that has a good purification effect on rainwater outfalls, can be modularly installed, is simple to construct, occupies a small area, is convenient to operate and manage, can quickly reduce non-point source pollution sources such as rainwater, improve the water quality of rainwater outfalls, and effectively prevent the deterioration of river water quality.

[0006] This utility model is achieved through the following technical solution.

[0007] A purification module for river stormwater outfalls includes: Modular frame structure with a water inlet on the side; The filter membrane is installed at the water inlet; A partition plate is provided inside the module frame structure to divide the interior of the module frame structure into two interconnected parts. An upper filler layer is provided above the partition plate, and a lower filler layer is provided below the partition plate. An aeration system is located between the bottom of the modular frame structure and the lower packing layer, and is used to introduce oxygen into the interior of the modular frame structure.

[0008] This invention removes suspended solids and some organic matter from rainwater outfalls using a filter membrane. An aerobic biofilm is formed by two layers of packing material, which, together with an aeration system, constitutes an aerobic system and a biofilm reactor. This reactor degrades and removes pollutants such as ammonia nitrogen and total phosphorus from the influent, improving the water quality at the rainwater outfall and ensuring clean water flows into the river. Simultaneously, the aeration system provides oxygen to the aerobic microorganisms and replenishes dissolved oxygen in the purified effluent, increasing oxygen content and promoting the river's self-purification capacity, thus ensuring long-term water quality. Therefore, this rainwater outfall purification module offers excellent purification effects, modular installation, simple construction, small footprint, and convenient operation and management. It can quickly reduce non-point source pollution sources such as rainwater and improve river water quality.

[0009] Furthermore, the bottom of the module frame structure is a grid plate for water discharge and supporting the aeration system. Specifically, the bottom grid plate is made of stainless steel mesh, which has good support effect and service life.

[0010] Furthermore, the filter membrane comprises, from the outside to the inside, a non-woven fabric, a first microfiltration membrane, an activated carbon layer, and a second microfiltration membrane arranged sequentially. The non-woven fabric, the first microfiltration membrane, the activated carbon layer, and the second microfiltration membrane physically filter the water from the rainwater outlet, removing suspended solids and some organic matter from the effluent.

[0011] Preferably, the nonwoven fabric is made of polyester fiber or polyester fiber, for example, with a thickness of 1 mm and a weight of 100 g / m². 2 Both the first and second microfiltration membranes are flat sheet membranes with a pore size between 0.1 and 1 mm; the activated carbon layer uses activated carbon with a particle size of 3-5 mm.

[0012] Furthermore, the partition plate is provided with several perforated channels. By setting the perforated channels with small apertures, the bubbles generated by the aeration system can be transferred to the packing layer. Specifically, the partition plate is made of stainless steel, and the perforated channel aperture is 4-6 mm.

[0013] Furthermore, the upper filler layer is a stainless steel mesh filler block, which is spliced ​​together from stainless steel mesh and supports the suspended filler. The stainless steel mesh serves two purposes: firstly, it supports the weight of the filler and reduces blockage of the perforated channels; secondly, the upper filler layer can be planted with aquatic plants, as the stainless steel mesh provides a platform and carrier for their cultivation. The suspended filler can adsorb pollutants in the water, and the aerobic biofilm growing on the filler has a good removal effect on ammonia nitrogen, total phosphorus, and organic pollutants in the water.

[0014] Furthermore, the lower packing layer is a carbon fiber packing material fixed below the partition plate. On the one hand, the carbon fiber packing material has adsorption capacity to remove pollutants such as total nitrogen and ammonia nitrogen from the water. On the other hand, the carbon fiber material has a large specific surface area, which can provide a carrier for microorganisms, form a biofilm, and purify the water.

[0015] Furthermore, aquatic plants are planted above the partition. These aquatic plants, such as turf or emergent plants, can absorb pollutants from the water through their root systems, while also providing a good ecological landscape effect. At the same time, the filter membrane, aerobic system, and aquatic plants work together to form a physical-chemical-biological triple effect, which can effectively purify ammonia nitrogen, total nitrogen, and total phosphorus in the incoming water, reduce pollutants, and improve the water quality of the rainwater outlet.

[0016] Furthermore, the aeration system includes a main aeration pipe, aeration branch pipes, an air inlet pipe, and aeration heads. The main aeration pipe is located at the bottom of the module frame structure, and its air inlet is connected to the air inlet pipe. The aeration branch pipes are connected to the air outlets of the main aeration pipe, and each branch pipe is equipped with an aeration head. The aeration system is situated within the space between the lower packing layer and the bottom of the module frame structure. The main aeration pipes are arranged side-by-side, with a diameter of 40-60 mm, and several aeration branch pipes are installed on each main aeration pipe. The aeration heads are retractable, allowing for precise aeration by controlling the aeration rate according to the liquid level. The aeration system provides oxygen to the packing layer and increases the oxygen content of the effluent, resulting in saturated oxygenated water. This improves the oxygen content of the receiving water body and enhances its self-purification capacity.

[0017] Furthermore, the aeration head includes an aeration head body, an air inlet, an aeration port, a T-valve, and a liquid level sensor. The bottom of the aeration head body is threadedly connected to the aeration branch pipe via a threaded connector. The air inlet and the threaded connector are integral. The aeration port is used to open or close according to the feedback data from the liquid level sensor via the T-valve. The aeration head body has a cylindrical structure with a threaded interface at the bottom for connection to the aeration branch pipe. The air inlet is the air intake end of the aeration head and is integral with the threaded interface. The aeration port is a retractable structure that opens or closes according to the feedback data from the liquid level sensor to control the aeration volume. The T-valve 13 works in conjunction with the retractable aeration port to control the aeration volume.

[0018] Compared with the prior art, this utility model has the following advantages and beneficial effects.

[0019] 1. This utility model removes suspended solids and some organic matter from rainwater outfalls using a filter membrane. It forms an aerobic biofilm by using upper and lower layers of packing material, which, together with an aeration system, constitutes an aerobic system and a biofilm reactor. This reactor degrades and removes pollutants such as ammonia nitrogen and total phosphorus from the influent, improving the water quality of the rainwater outfall and ensuring clean water entering the river. Simultaneously, the aeration system provides oxygen to the aerobic microorganisms and replenishes dissolved oxygen in the purified effluent, increasing oxygen content and promoting the river's self-purification capacity, thus ensuring long-term water quality. Therefore, this utility model's river rainwater outfall purification module has a good purification effect on rainwater outfalls, can be modularly installed, is simple to construct, occupies a small area, and is convenient to operate and manage. It can quickly reduce non-point source pollution sources such as rainwater and improve river water quality.

[0020] 2. This utility model, by planting aquatic plants above the partition plate, enables the aquatic plants to absorb pollutants in the water through their root systems, while also providing a good ecological landscape effect. Under this design, the filter membrane, aerobic system, and aquatic plants work together to form a physical-chemical-biological triple effect, which can further and effectively purify ammonia nitrogen, total nitrogen, and total phosphorus in the incoming water, reduce pollutants, and improve the water quality of rainwater outlets. Attached Figure Description

[0021] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the filter membrane structure; Figure 3 This is a schematic diagram of the aeration head.

[0022] The attached diagram shows the markings and corresponding component names: 1-Module frame structure, 2-Filter membrane, 3-Separator plate, 4-Suspended packing, 5-Aquatic plants, 6-Main aeration pipe, 7-Aeration branch pipe, 8-Air inlet pipe, 9-Non-woven fabric, 10-First microfiltration membrane, 11-Activated carbon layer, 12-Second microfiltration membrane, 13-Carbon fiber packing, 14-T-type valve, 15-Aeration head body, 16-Air inlet, 17-Aeration port, 18-Liquid level sensor. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.

[0024] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be apparent to those skilled in the art that these specific details are not necessary to implement the present invention. In other embodiments, well-known structures, circuits, materials, or methods are not specifically described in order to avoid obscuring the present invention.

[0025] Throughout this specification, references to "an embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in connection with that embodiment or example is included in at least one embodiment of the present invention. Therefore, the phrases "an embodiment," "an example," "an example," or "an example" appearing in various places throughout the specification do not necessarily refer to the same embodiment or example. Furthermore, specific features, structures, or characteristics can be combined in one or more embodiments or examples in any suitable combination and / or sub-combination. Moreover, those skilled in the art will understand that the illustrations provided herein are for illustrative purposes and are not necessarily drawn to scale. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0026] In the description of this utility model, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product of this application is usually placed in when in use, or the orientation or positional relationship that is commonly understood by those skilled in the art. It is only for the convenience of describing this application and simplifying the description, and is not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0027] Meanwhile, the terms "set up," "assemble," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] Example This embodiment provides a purification module for river stormwater outfalls, such as... Figures 1-3 As shown, it includes: Module frame structure 1, with a water inlet on the side; Filter membrane 2 is installed at the water inlet; The partition plate 3 is provided inside the module frame structure 1 to divide the interior of the module frame structure 1 into two interconnected parts. An upper filler layer is provided above the partition plate 3, and a lower filler layer is provided below the partition plate 3. An aeration system is located between the bottom of the module frame structure 1 and the lower packing layer, and is used to introduce oxygen into the module frame structure 1.

[0029] This invention removes suspended solids and some organic matter from rainwater outfalls using a filter membrane 2. An aerobic biofilm is formed by two layers of packing material, which, together with an aeration system, constitutes an aerobic system and a biofilm reactor. This reactor degrades and removes pollutants such as ammonia nitrogen and total phosphorus from the influent, improving the water quality at the rainwater outfall and ensuring clean water flows into the river. Simultaneously, the aeration system provides oxygen to the aerobic microorganisms and replenishes dissolved oxygen in the purified effluent, increasing oxygen content and promoting the river's self-purification capacity, thus ensuring long-term water quality. Therefore, this rainwater outfall purification module has excellent purification effects on rainwater outfalls, can be modularly installed, is simple to construct, occupies a small area, and is easy to operate and manage. It can quickly reduce non-point source pollution sources such as rainwater and improve river water quality.

[0030] The modular frame structure 1 is a cuboid frame structure made of materials such as angle steel and plexiglass. It has a width of 1-1.5m, a length of 1-1.5m, and a height of 0.5m. It is modularly installed and can be assembled into modules according to its intended use. The bottom of the modular frame structure 1 is a grid plate, which serves to support the aeration system and allows the treated effluent to be discharged into the river through the grid plate. Specifically, the bottom grid plate is made of stainless steel, which provides good support and long service life.

[0031] In one specific implementation, such as Figure 2 As shown, the filter membrane 2 includes a non-woven fabric 9, a first microfiltration membrane 10, an activated carbon layer 11, and a second microfiltration membrane 12 arranged sequentially from the outside to the inside. The non-woven fabric 9, the first microfiltration membrane 10, the activated carbon layer 11, and the second microfiltration membrane 12 physically filter the water from the rainwater outlet, removing suspended solids and some organic matter from the effluent.

[0032] In a preferred embodiment, the nonwoven fabric 9 is made of polyester fiber or polyester fiber, for example, with a thickness of 1 mm and a weight of 100 g / m2; the first microfiltration membrane 10 and the second microfiltration membrane 12 are both flat sheet membranes with a filtration pore size between 0.1 and 1 mm; the activated carbon layer 11 uses activated carbon with a particle size of 3-5 mm.

[0033] In one specific embodiment, the partition plate 3 has a plurality of perforated channels distributed on it. By setting the perforated channels with small apertures, the bubbles generated by the aeration system can be transferred to the packing layer. Specifically, the partition plate 3 is a stainless steel plate, and the perforated channel aperture is 4-6 mm.

[0034] In one specific implementation, such as Figure 1As shown, the upper filler layer is a stainless steel mesh filler block, which is spliced ​​together from stainless steel mesh and supports the suspended filler 4. The stainless steel mesh serves two purposes: firstly, it supports the weight of the filler and reduces blockage of the perforated channels; secondly, the upper filler layer can be planted with aquatic plants 5, and the stainless steel mesh provides a platform and carrier for their cultivation. The suspended filler 4 can adsorb pollutants in the water, and the aerobic biofilm growing on the filler has a good removal effect on ammonia nitrogen, total phosphorus, and organic pollutants in the water.

[0035] In one specific implementation, such as Figure 1 As shown, the lower packing layer is a carbon fiber packing 13 fixed below the partition plate 3. On the one hand, the carbon fiber packing 13 has adsorption capacity to remove pollutants such as total nitrogen and ammonia nitrogen from the water. On the other hand, the carbon fiber material has a large specific surface area, which can provide a carrier for microorganisms, form a biofilm, and purify the water.

[0036] As a preferred implementation method, such as Figure 1 As shown, aquatic plants 5 are planted above the partition plate 3. Aquatic plants 5 can be planted with turf or emergent plants, which can absorb pollutants in the water through their root systems, while also providing a good ecological landscape effect. At the same time, the filter membrane 2, the aerobic system, and the aquatic plants 5 work together to form a physical-chemical-biological triple effect, which can effectively purify ammonia nitrogen, total nitrogen, and total phosphorus in the incoming water, reduce pollutants, and improve the water quality of the rainwater outlet.

[0037] In one specific implementation, such as Figure 1 As shown, the aeration system includes a main aeration pipe 6, aeration branch pipes 7, an air inlet pipe 8, and aeration heads. The main aeration pipe 6 is located at the bottom of the module frame structure 1, and its air inlet 16 is connected to the air inlet pipe 8. The aeration branch pipes 7 are connected to the air outlets of the main aeration pipe, and each branch pipe 7 is equipped with an aeration head. The aeration system is situated in the space between the lower packing layer and the bottom of the module frame structure 1. The main aeration pipes 6 are arranged side-by-side, with a diameter of 40-60 mm, and several aeration branch pipes 7 are installed on each. The aeration heads are retractable, allowing for precise aeration by controlling the aeration rate according to the liquid level. The function of the aeration system is to provide oxygen to the packing layer and increase the oxygen content of the effluent, resulting in saturated oxygenated water. This improves the oxygen content of the receiving water body and enhances its self-purification capacity.

[0038] Specifically, such as Figure 3As shown, the aeration head includes an aeration head body 15, an air inlet 16, an aeration port 17, a T-valve 14, and a liquid level sensor 18. The bottom of the aeration head body 15 is threadedly connected to the aeration branch pipe 7 via a threaded connector. The air inlet 16 and the threaded connector are integral. The aeration port 17 is used to open or close according to the feedback data from the liquid level sensor 18 via the T-valve 14. The aeration head body 15 has a cylindrical structure with a threaded interface at the bottom for connection to the aeration branch pipe 7. The air inlet 16 is the air inlet end of the aeration head and is integral with the threaded interface. The aeration port 17 is a retractable structure that opens or closes according to the feedback data from the liquid level sensor to control the aeration volume. The T-valve 14 works in conjunction with the retractable aeration port 17 to control the aeration volume.

[0039] Finally, it should be noted that the above specific embodiments are only used to describe the purpose, technical solution, and beneficial effects of this utility model in detail. It should be understood that the above description is only a specific implementation of this utility model and is not intended to limit the protection scope of this utility model. Although this utility model has been described in detail with reference to the foregoing specific embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions or improvements can be made to some or all of the technical features. These modifications, equivalent substitutions, and improvements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A purification module for river stormwater outfalls, characterized in that, include: The modular frame structure (1) has a water inlet on the side; A filter membrane (2) is installed at the water inlet; A partition plate (3) is provided inside the module frame structure (1) to divide the inside of the module frame structure (1) into two interconnected parts. An upper filler layer is provided above the partition plate (3), and a lower filler layer is provided below the partition plate (3). An aeration system is located between the bottom of the modular frame structure (1) and the lower packing layer, and is used to introduce oxygen into the interior of the modular frame structure (1).

2. The purification module for river stormwater outfalls according to claim 1, characterized in that, The bottom of the module frame structure (1) is a grid plate used for water discharge and supporting the aeration system.

3. A purification module for river stormwater outfalls according to claim 1, characterized in that, The filter membrane (2) includes a non-woven fabric (9), a first microfiltration membrane (10), an activated carbon layer (11), and a second microfiltration membrane (12) arranged sequentially from the outside to the inside.

4. A purification module for river stormwater outfalls according to claim 3, characterized in that, The first microfiltration membrane (10) and the second microfiltration membrane (12) are both flat sheet membranes with a filtration pore size between 0.1 and 1 mm; the activated carbon layer (11) uses activated carbon with a particle size of 3-5 mm.

5. A purification module for river stormwater outfalls according to claim 1, characterized in that, The partition plate (3) has several perforated channels.

6. A purification module for river stormwater outfalls according to claim 1, characterized in that, The upper packing layer is a stainless steel mesh packing block, which is spliced ​​together from stainless steel mesh and carries suspended packing (4).

7. A purification module for river stormwater outfalls according to claim 1, characterized in that, The lower filler layer is a carbon fiber filler (13) fixed below the partition plate (3).

8. A purification module for river stormwater outfalls according to claim 1, characterized in that, Aquatic plants (5) are planted above the partition (3).

9. A purification module for river stormwater outfalls according to claim 1, characterized in that, The aeration system includes a main aeration pipe (6), an aeration branch pipe (7), an air inlet pipe (8), and an aeration head. The main aeration pipe (6) is located at the bottom of the module frame structure (1). The air inlet (16) of the main aeration pipe (6) is connected to the air inlet pipe (8). The aeration branch pipe (7) is connected to the air outlet of the main aeration pipe. An aeration head is provided on the aeration branch pipe (7).

10. A purification module for river stormwater outfalls according to claim 9, characterized in that, The aeration head includes an aeration head body (15), an air inlet (16), an aeration port (17), a T-valve (14), and a liquid level sensor (18). The bottom of the aeration head body (15) is threadedly connected to the aeration branch pipe (7) through a threaded joint. The air inlet (16) and the threaded joint are an integral unit. The aeration port (17) is used to control the opening or closing of the aeration head through the T-valve (14) based on the feedback data from the liquid level sensor (18).

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