Adjustable subsurface flow constructed wetland system for removing new pollutants

Abstract

The utility model discloses an adjustable subsurface flow constructed wetland system for removing new pollutants, which specifically comprises a wastewater storage tank, a water pump, an adjustable subsurface flow constructed wetland system and an aerator, the bottom end of the inner cavity of the adjustable subsurface flow constructed wetland system is fixedly connected with a bearing ring, the top of the bearing ring is provided with a bearing disc, and the bearing disc is fixedly connected with the bottom end of the inner cavity of the adjustable subsurface flow constructed wetland system. An inner cavity of the adjustable subsurface flow constructed wetland system is divided into a filler area and a water distribution area from top to bottom by the bearing disc, an aeration disc is arranged at the bottom of an inner cavity of the water distribution area, and an air inlet valve is fixedly connected to the bottom of an inner cavity of the aeration disc. The process parameters can be adjusted according to actual requirements, the pollutant removal effect is improved, and the actual requirements are met; and through the arrangement of a plurality of filler sampling ports, a user can conveniently sample the filler in the constructed wetland, and the convenience of the system in use is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of water environment treatment, and particularly relates to an adjustable subsurface flow constructed wetland system for removing emerging pollutants. Background Technique

[0002] Emerging pollutants, as a type of pollutants that have gradually attracted the attention of the public and environmental protection agencies in recent years, have been proven to exist in human health and the ecological environment. Strengthening the monitoring, assessment, and management of emerging pollutants has become an important issue in global environmental protection. To address the challenges of emerging pollutants, governments and international organizations around the world are strengthening cooperation, formulating relevant environmental standards and regulations, and promoting environmental management and technological innovation.

[0003] As an eco-friendly water treatment technology, constructed wetlands are widely used in the engineering practice of water pollution treatment. As a type of constructed wetland, vertical subsurface flow constructed wetlands have their unique advantages, such as small footprint and high treatment efficiency, and are therefore widely used. Due to the synergistic effect of plants, fillers, and microorganisms in constructed wetlands, they have a good removal effect on emerging pollutants that are difficult to degrade. As an important "sink" for emerging pollutants, the introduction of new pollutants will pose challenges to the operation of constructed wetlands. For example, the introduction of microplastics will make constructed wetlands more prone to clogging and reduce the removal effect of constructed wetlands on traditional pollutants. Under this premise, optimizing and adjusting the process operation parameters to mitigate the impact of new pollution and improve the removal effect of constructed wetlands on new pollution is a relatively convenient means to improve the wetland process. This utility model patent provides an adjustable subsurface flow constructed wetland. Summary of the Invention

[0004] The utility model provides an adjustable subsurface flow constructed wetland system for removing emerging pollutants, which improves the problems proposed in the above background technique that the introduction of new pollutants makes constructed wetlands more prone to clogging and reduces the removal effect of constructed wetlands on traditional pollutants.

[0005] The present utility model provides the following technical solution: An adjustable subsurface flow constructed wetland system for removing emerging pollutants, comprising a wastewater storage tank, a water pump, an adjustable subsurface flow constructed wetland system, and an aerator. At the bottom end of the inner cavity of the adjustable subsurface flow constructed wetland system, a supporting ring is fixedly connected. On the top of the supporting ring, a supporting tray is placed. The supporting tray divides the inner cavity of the adjustable subsurface flow constructed wetland system into a packing area and a water distribution area from top to bottom. At the bottom of the inner cavity of the water distribution area, an aeration disc is provided. At the bottom of the inner cavity of the aeration disc, an air inlet valve is fixedly connected. The other end of the air inlet valve is fixedly connected to the air outlet end of the aerator through an air supply pipe. On one side of the bottom of the inner cavity of the water distribution area, a bottom valve is fixed. On one side of the inner cavity of the packing area, side valves are evenly provided. The wastewater storage tank is connected to the side valves or the bottom valve through the water pump. The water in the adjustable subsurface flow constructed wetland system is discharged through the side valves or the bottom valve. On the other side of the inner cavity of the packing area, packing sampling ports are evenly provided. The packing sampling ports are sealed with stoppers. Packing is filled in the packing area, and microorganisms are inoculated among the packing. Plants are planted on the upper layer of the packing area, and the microorganisms adhere to the plant roots. An outer ring at the top end of the adjustable subsurface flow constructed wetland system is fixedly connected with a water seal groove. An air collection hood is buckled in the inner cavity of the water seal groove. The top of the adjustable subsurface flow constructed wetland system is sealed through the air collection hood. At the top of the inner cavity of the air collection hood, an air collection structure is provided. At the bottom of the air collection structure, a full-spectrum lamp is clamped. An opaque coating belt is wound around the outer surface of the adjustable subsurface flow constructed wetland system, and vertical observation slits are left on the coating belt.

[0006] Further, the air collection structure includes an air extraction pump fixedly connected to the top of the inner cavity of the air collection hood. An air outlet pipe is fixed to the air outlet end of the air extraction pump. An opening is provided at the top of the air collection hood. The other end of the air outlet pipe extends to the outside of the air collection hood through the opening, and a ball valve is provided at the other end of the air outlet pipe.

[0007] Further, the adjustable subsurface flow constructed wetland system is of a split structure. The adjustable subsurface flow constructed wetland system includes a main body and a bottom plate. The bottom plate is fixedly connected to the bottom of the main body, and a sealing gasket is provided between the main body and the bottom plate.

[0008] Further, the water seal groove, the packing sampling ports, the supporting ring and the main body form an integral structure; the bottom plate, the aeration disc and the bottom valve form an integral structure.

[0009] Further, through holes are evenly provided on the supporting tray.

[0010] Further, the water inlet end of the water pump is fixedly connected with a water inlet pipe, and the other end of the water inlet pipe extends to the bottom end of the inner cavity of the wastewater storage tank. The water outlet end of the water pump is fixedly connected with a water outlet pipe, and the other end of the water outlet pipe is connected to the bottom valve or the side valve. Beneficial effects

[0011] 1. The adjustable subsurface flow constructed wetland system for removing emerging pollutants can achieve water inlet modes in different directions according to actual needs. At the same time, it can meet intermittent water inlet and continuous flow water inlet according to requirements, improving its adaptability and meeting actual needs. Through the setting of multiple packing sampling ports, it is convenient for users to sample the packing in the constructed wetland, improving the convenience of using the system.

[0012] 2. The adjustable subsurface flow constructed wetland system for removing emerging pollutants, through the setting of the bearing tray, can be used to support the packing, and the through holes provided thereon can make the water entering the packing area from the bottom valve evenly distributed, so that the system can meet the requirement of uniform water inlet; through the setting of the aeration disk, air can be introduced into the wetland to adjust the dissolved oxygen content in the constructed wetland and improve the blockage of the device.

[0013] 3. The adjustable subsurface flow constructed wetland system for removing emerging pollutants, through the setting of packing, microorganisms and plants, the packing can adsorb pollutants, the microorganisms can degrade pollutants, and the plants can absorb pollutants. The combined use of these three parts of packing, microorganisms and plants improves the removal efficiency of pollutants and ensures the use effect of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a front schematic view of an embodiment of the present utility model;

[0015] Figure 2 is a three-dimensional schematic view of the adjustable subsurface flow constructed wetland system of the present utility model;

[0016] Figure 3 is a bottom schematic view of the adjustable subsurface flow constructed wetland system of the present utility model;

[0017] Figure 4 is of the present utility model Figure 2 sectional schematic view;

[0018] Figure 5 is a schematic view of the full-spectrum lamp of the present utility model.

[0019] In the figure: 1, main body; 2, bottom plate; 3, full-spectrum lamp; 4, sealing gasket; 5, side valve; 6, packing sampling port; 7, water seal groove; 8, gas collecting hood; 9, air outlet pipe; 10, intake valve; 11, bottom valve; 12, aeration disk; 13, bearing tray; 14, bearing ring; 15, air extraction pump; 16, observation slit; 17, wastewater storage tank; 18, water pump; 19, aerator; 20, drain pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0021] Refer to the attached Figure 1 to the attached Figure 5 As shown in the figures, the present invention provides an adjustable subsurface flow constructed wetland system for removing emerging pollutants, which includes a wastewater storage tank 17, a water pump 18, an adjustable subsurface flow constructed wetland system, and an aerator 19. A supporting ring 14 is fixedly connected to the bottom end of the inner cavity of the adjustable subsurface flow constructed wetland system. A supporting tray 13 is placed on the top of the supporting ring 14. The supporting tray 13 is evenly provided with through holes. When the system is in use, the supporting tray 13 is used to support the packing. The supporting tray 13 divides the inner cavity of the adjustable subsurface flow constructed wetland system into a packing area and a water distribution area from top to bottom. The packing area and the water distribution area are communicated through the through holes.

[0022] An aeration disc 12 is arranged at the bottom of the inner cavity of the water distribution area. An intake valve 10 is fixedly connected to the bottom of the inner cavity of the aeration disc 12. The other end of the intake valve 10 is located outside the adjustable subsurface flow constructed wetland system. The other end of the intake valve 10 is fixedly connected to the air outlet end of the aerator 19 through an air pipe. When the aerator 19 works, gas can be blown into the aeration disc 12. The gas in the aeration disc 12 is evenly sprayed into the inner cavity of the adjustable subsurface flow constructed wetland system, increasing the dissolved oxygen content in the adjustable subsurface flow constructed wetland system and improving the blockage of the device. A bottom valve 11 is fixed on one side of the bottom of the inner cavity of the water distribution area. The other ends of the bottom valve 11 all extend to the outside of the adjustable subsurface flow constructed wetland system. The bottom valve 11 can be used for water inlet and outlet. During the water inlet process, the through holes arranged on the supporting tray 13 can make the water evenly distributed, so that the system can meet the requirement of uniform water inlet.

[0023] The setting of the water distribution area can prevent the short-circuit phenomenon. Preferably, the thickness of the water distribution area is 4-8 cm.

[0024] Side valves 5 are evenly arranged on one side of the inner cavity of the packing area. In some embodiments of the present application, the side valves 5 are connected to the adjustable subsurface flow constructed wetland system by means of threaded connection, which is convenient for the disassembly and assembly of the side valves 5. When the system is in use, the side valves 5 can be used for sampling, which is convenient for users to measure the sewage indexes at different positions and to grasp the use effect of the system in real time. The side valves 5 can also be used as water inlets, so that the system can realize the water inlet mode with water flowing in from different directions and meet the actual requirements.

[0025] On the other side of the inner cavity of the packing area, a packing sampling port 6 is evenly provided. The packing sampling port 6 is sealed by a plug. Through the setting of the packing sampling port 6, it is convenient for users to collect the packing in the constructed wetland and improve the convenience of packing sampling and detection. Preferably, the diameter of the packing sampling port 6 is 4 cm.

[0026] The packing area is filled with packing, which can adsorb sewage, and microorganisms are inoculated among the packing. The microorganisms can degrade sewage. The types of microorganisms and the types of packing are selected according to requirements and are not limited here. Plants are planted on the upper layer of the packing area. The microorganisms are attached to the plant roots, and the plants can adsorb pollutants. When the system is in use, the packing, microorganisms, and plants work together to remove pollutants, improving the pollutant removal effect.

[0027] The packing area is filled with packing of different particle sizes and different materials. The filling method and thickness of each layer of packing can be adjusted independently, or different packings can be mixed. For example, 4-10 mm gravel is placed in the first layer of packing to support the adsorption packing, iron-carbon mixed packing is placed in the second layer of packing to enhance pollutant removal, and zeolite is placed in the third layer of packing to adsorb pollutants and fix aquatic plants. Plants can be planted in the possible packing. For example, iris is planted in the third layer of packing. It is an emergent plant with stems and leaves above the water surface and roots deep into the packing. The life activities of the plant itself and the microorganisms attached to the roots are beneficial to pollutant removal. Preferably, the thickness of the packing layer is 5-15 cm according to the actual situation, and the number of layers is 1-3.

[0028] A water seal groove 7 is fixedly connected to the outer ring at the top of the adjustable subsurface flow constructed wetland system. An air collection hood 8 is buckled inside the inner cavity of the water seal groove 7. The top of the main body 1 is sealed by the air collection hood 8. Through the setting of the water seal groove 7, gas leakage can be prevented, and the sealing performance between the air collection hood 8 and the adjustable subsurface flow constructed wetland system can be improved.

[0029] An air collection structure is provided at the top of the inner cavity of the air collection hood 8. The air collection structure includes an air extraction pump 15 fixedly connected to the top of the inner cavity of the air collection hood 8. An air outlet pipe 9 is fixed to the air outlet end of the air extraction pump 15. An opening is provided at the top of the air collection hood 8. The other end of the air outlet pipe 9 extends to the outside of the air collection hood 8 through the opening, and a ball valve is provided at the other end of the air outlet pipe 9. Through the setting of the air collection structure, when the air extraction pump 15 works, the gas in the main body 1 can be pumped into the air outlet pipe 9, which is convenient for users to collect the gas generated in the device.

[0030] A full-spectrum lamp 3 is snap-connected to the bottom of the gas collection structure. The full-spectrum lamp 3 is externally connected to a light intensity adjustment and timing switch controller. In the case of insufficient natural light, light supplementation is carried out through the light of the full-spectrum lamp 3 to ensure the normal growth of plants and the stable operation of the system. The timing switch device can be used as an option to simulate the natural light irradiation duration for light supplementation. The advantage is that in the case of insufficient light, the space for supplementary lighting of the structure is saved.

[0031] The adjustable subsurface flow constructed wetland system is made of a transparent material, which can be acrylic. An opaque wrapping tape, such as a black tape, is wound around the outer surface of the adjustable subsurface flow constructed wetland system to play a role in shading, avoiding the generation of algae and causing system blockage. And a vertical observation slit 16 is reserved on the wrapping tape to facilitate the observation of the sewage treatment situation.

[0032] The adjustable subsurface flow constructed wetland system is of a split structure. The adjustable subsurface flow constructed wetland system includes a main body 1 and a bottom plate 2. The bottom plate 2 is fixedly connected to the bottom of the main body 1, and a sealing gasket 4 is provided between the main body 1 and the bottom plate 2. The material of the sealing gasket 4 can be silica gel. Through the setting of the sealing gasket, the sealing performance between the main body 1 and the bottom plate 2 is increased, avoiding water leakage.

[0033] An aeration disc 12 and a bottom valve 11 are connected to the bottom plate 2, a water seal groove 7, a packing sampling port 6 and a supporting ring 14 are connected to the main body 1, and the water seal groove 7, the packing sampling port 6 and the supporting ring 14 form an integral structure with the main body 1; the bottom plate 2, the aeration disc 12 and the bottom valve 11 form an integral structure.

[0034] The wastewater storage tank 17 stores wastewater containing new pollutants. The inlet end of a water pump 18 is fixedly connected with a water inlet pipe, and the other end of the water inlet pipe extends to the bottom end of the inner cavity of the wastewater storage tank 17. The outlet end of the water pump 18 is fixedly connected with a water outlet pipe, and the other end of the water outlet pipe is connected to the adjustable subsurface flow constructed wetland system. When the adjustable subsurface flow constructed wetland system intakes water through the bottom valve 11, the other end of the water outlet pipe is connected to the bottom valve 11. At this time, the other end of a side valve 5 is connected with a drain pipe 20. When the adjustable subsurface flow constructed wetland system intakes water through the side valve 5, the other end of the water outlet pipe is connected to the side valve 5, and at this time, the adjustable subsurface flow constructed wetland system discharges water through the bottom valve 11 or other side valves 5.

[0035] It can be seen from the above description that when the above-mentioned disclosed subsurface flow constructed wetland system is actually used, it can realize the water inlet mode in different directions, and at the same time, it can meet intermittent water inlet and continuous flow water inlet according to needs, improve its adaptability and meet the actual needs; through the setting of multiple packing sampling ports, it is convenient for users to sample the packing in the wetland and improve the convenience of using the system.

[0036] Next, through an embodiment of the present application, the present application will be further described.

[0037] As Figure 1 shown, in this embodiment, the adjustable subsurface flow constructed wetland system realizes water inlet through the bottom valve 11, realizes water outlet through the side valve 5, the other end of the water outlet pipe is connected to the bottom valve 11, and the other end of the upper side valve 5 is connected to a drain pipe 20. The user fills the packing material in the packing area according to the needs. Microorganisms capable of degrading sewage are planted between the packing materials, and plants capable of degrading sewage are fixed on the upper layer of the packing area.

[0038] The sewage containing new pollutants stored in the wastewater storage tank 17 is pumped into the water distribution area of the adjustable subsurface flow constructed wetland system through the water pump 18. The sewage is evenly distributed to the packing area through the bearing tray 13. In the packing area, the sewage is efficiently removed through packing adsorption, microbial degradation and plant absorption. During this process, the user can perform multi-point sampling of the sewage through the side valve 5 for measuring the indicators at different positions. The user can view the sewage treatment situation through the vertical observation slit 16. The user can perform supplementary lighting through the full-spectrum lamp 3 to ensure the normal growth of plants and the stable operation of the system.

[0039] The standard parts used in the present utility model can all be purchased from the market. The special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, welding, etc. that are mature in the prior art. The machines, parts and equipment all adopt conventional models in the prior art, which will not be elaborated here. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art. Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An adjustable subsurface flow constructed wetland system for removing emerging pollutants, comprising a wastewater storage tank (17), a water pump (18), an adjustable subsurface flow constructed wetland system, and an aerator (19), characterized in that: At the bottom end of the inner cavity of the adjustable subsurface flow constructed wetland system, a supporting ring (14) is fixedly connected. On the top of the supporting ring (14), a supporting tray (13) is placed. The supporting tray (13) divides the inner cavity of the adjustable subsurface flow constructed wetland system into a filler area and a water distribution area from top to bottom. At the bottom of the inner cavity of the water distribution area, an aeration disc (12) is provided. At the bottom of the inner cavity of the aeration disc (12), an air inlet valve (10) is fixedly connected. The other end of the air inlet valve (10) is fixedly connected to the air outlet end of an aerator (19) through an air pipe. On one side of the bottom of the inner cavity of the water distribution area, a bottom valve (11) is fixed. On one side of the inner cavity of the filler area, side valves (5) are evenly provided. The wastewater storage tank (17) is connected to the side valves (5) or the bottom valve (11) through a water pump (18). The water in the adjustable subsurface flow constructed wetland system is discharged through the side valves (5) or the bottom valve (11). On the other side of the inner cavity of the filler area, filler sampling ports (6) are evenly provided. The filler sampling ports (6) are sealed with stoppers. Fillers are filled in the filler area, and microorganisms are inoculated between the fillers. Plants are planted in the upper layer of the filler area, and the microorganisms adhere to the plant roots. An outer ring at the top of the adjustable subsurface flow constructed wetland system is fixedly connected with a water seal groove (7). An air collection hood (8) is buckled in the inner cavity of the water seal groove (7). The top of the adjustable subsurface flow constructed wetland system is sealed through the air collection hood (8). At the top of the inner cavity of the air collection hood (8), an air collection structure is provided. At the bottom of the air collection structure, a full-spectrum lamp (3) is clamped. An opaque coating belt is wound around the outer surface of the adjustable subsurface flow constructed wetland system, and a vertical observation slit (16) is left on the coating belt.

2. The adjustable subsurface flow constructed wetland system for removing emerging pollutants according to claim 1, characterized in that: The air collection structure includes an air extraction pump (15) fixedly connected to the top of the inner cavity of the air collection hood (8). An air outlet pipe (9) is fixed at the air outlet end of the air extraction pump (15). An opening is provided at the top of the air collection hood (8). The other end of the air outlet pipe (9) extends to the outside of the air collection hood (8) through the opening, and a ball valve is provided at the other end of the air outlet pipe (9).

3. An adjustable subsurface flow constructed wetland system for removing emerging contaminants according to claim 1, characterized in that: The adjustable subsurface flow constructed wetland system is of a split structure. The adjustable subsurface flow constructed wetland system includes a main body (1) and a bottom plate (2). The bottom plate (2) is fixedly connected to the bottom of the main body (1), and a sealing gasket (4) is provided between the main body (1) and the bottom plate (2).

4. The adjustable subsurface flow constructed wetland system for removing emerging pollutants according to claim 3, wherein: The water seal groove (7), the filler sampling port (6), the supporting ring (14) and the main body (1) form an integral structure; the bottom plate (2), the aeration disc (12) and the bottom valve (11) form an integral structure.

5. An adjustable subsurface flow constructed wetland system for removing emerging pollutants, characterized in that: The supporting tray (13) is evenly provided with through holes.

6. An adjustable subsurface flow constructed wetland system for removing emerging pollutants according to claim 1, characterized in that: The water inlet end of the water pump (18) is fixedly connected with a water inlet pipe, and the other end of the water inlet pipe extends to the bottom end of the inner cavity of the wastewater storage tank (17). The water outlet end of the water pump (18) is fixedly connected with a water outlet pipe, and the other end of the water outlet pipe is connected to the bottom valve (11) or the side valve (5).

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