Enhanced oxygenation anti-clogging artificial wetland

Abstract

The utility model relates to an enhanced oxygenation anti-clogging artificial wetland, which comprises a wetland pool, an oxygenation cleaning assembly, a water inlet assembly and a water drainage assembly, filler is arranged in the wetland pool, the oxygenation cleaning assembly is arranged in the wetland pool and is positioned below the filler, the water inlet assembly is arranged on the wetland pool and is positioned above the filler, and the water drainage assembly is arranged on the wetland pool and is positioned above the filler. The drainage assembly is mounted below the oxygenation cleaning assembly; water can be supplemented to the filler through the arranged water inlet assembly, so that growth of plants planted on the filler is utilized, meanwhile, redundant water can be drained through the drainage assembly arranged at the bottom of the filler, in order to improve the oxygen supply amount, the filler can be oxygenated through the oxygenation cleaning assembly, the oxygenation efficiency is enhanced, and meanwhile the oxygen supply amount is increased. Air can be introduced into the oxygenation cleaning assembly to carry out back flushing on the filler, so that the filler is loosened and dirt such as biological membranes and plant residues in the filler is flushed to the surface of the wetland pool, and then water can be introduced into the oxygenation cleaning assembly to carry out further back flushing on the filler, so that the filler can be effectively prevented from being blocked.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to an anti-clogging artificial wetland with enhanced oxygenation. Background Art

[0002] Constructed wetland treatment technology is widely used in the treatment of low-concentration domestic sewage in areas with dispersed pollution sources, difficult sewage collection network construction, and small-scale treatment due to its stable treatment effect and low operating cost. Constructed wetlands mainly rely on the metabolism of microorganisms growing on the internal filler (matrix) of the wetland and plants on the surface of the wetland to degrade pollutants.

[0003] As the operation time increases, the biofilm attached to the surface of the filler becomes thicker and thicker. At the same time, if it is not cleaned in time, dead branches and leaves will rot and enter the filler layer, causing the gaps between the fillers to be blocked, the water flow capacity to decrease, and the treatment effect to deteriorate. Sometimes all the fillers have to be removed, replaced with new fillers and replanted, which greatly increases the workload and operation cost of operation and maintenance. On the other hand, in order to reduce the operation cost, artificial wetlands often use natural oxygenation, that is, air contacts the surface of the filler for oxygen exchange, and uses the photosynthesis and root system of the plant to transmit oxygen, and the oxygenation efficiency is low.

[0004] Therefore, there is an urgent need for an anti-clogging artificial wetland with enhanced oxygenation. Utility Model Content

[0005] In view of this, it is necessary to provide an anti-clogging artificial wetland with enhanced oxygenation to solve the problems of low oxygenation efficiency and easy clogging of fillers in existing artificial wetlands.

[0006] The utility model provides an anti-clogging artificial wetland with enhanced oxygenation, comprising a wetland pool, an oxygenation and cleaning component, a water inlet component and a drainage component. Filling is arranged in the wetland pool, the oxygenation and cleaning component is built in the wetland pool and is located below the filling, so as to realize the oxygenation or cleaning of the filling, the water inlet component is installed on the wetland pool and is located above the filling, so as to supply water to the filling, and the drainage component is installed below the oxygenation and cleaning component, so as to pump water at the bottom of the wetland pool.

[0007] Furthermore, the wetland pool is a rectangular pool structure, and the surrounding area of ​​the wetland pool is formed by a protective structure formed by brick blocks. The blocks are treated for anti-seepage by grouting and plastering. The bottom of the wetland pool is treated for anti-seepage with compacted clay and paved with a polyethylene geomembrane.

[0008] Furthermore, the filler includes a first filler layer and a second filler layer which are arranged in sequence vertically upward, and the pores of the first filler layer are smaller than the pores of the second filler layer.

[0009] Furthermore, the oxygenation and cleaning component includes an oxygenation and cleaning main pipe and multiple oxygenation and cleaning branch pipes, one end of the oxygenation and cleaning main pipe is connected to an external gas source or a water source, and the other end of the oxygenation and cleaning main pipe is connected to multiple oxygenation and cleaning branch pipes. The multiple oxygenation and cleaning branch pipes are arranged in parallel in the horizontal direction and arranged below the filler, and multiple oxygenation and cleaning ports are formed on the top of the oxygenation and cleaning branch pipe along its length direction.

[0010] Furthermore, an elastic nozzle is installed on the oxygenation and cleaning port, and a slit is formed at the middle position of the elastic nozzle. When the oxygenation and cleaning branch pipe is aerated or supplied with water, the slit of the elastic nozzle opens, and when the oxygenation and cleaning branch pipe is not aerated or supplied with water, the slit of the elastic nozzle is closed.

[0011] Furthermore, the oxygenation and cleaning main pipe is connected to the plurality of oxygenation and cleaning branch pipes via a plurality of first valves respectively, and the oxygenation and cleaning main pipe is connected to an external gas source or water source via a second valve.

[0012] Furthermore, the water inlet assembly includes two water distribution troughs, two water inlet pipes and two third valves arranged on both sides of the wetland pool. The two third valves are respectively installed on the two water inlet pipes. One end of the two water inlet pipes is connected to an external water source, and the other end of the two water inlet pipes is respectively connected to the two water distribution troughs.

[0013] Furthermore, the drainage assembly includes a drainage main pipe, multiple drainage branch pipes and a fourth valve, the fourth valve is installed on the drainage main pipe, one end of the drainage main pipe is externally connected to a water pump, and the other end of the drainage main pipe is connected to the multiple drainage branch pipes, and the multiple drainage branch pipes are arranged in parallel in the horizontal direction and arranged below the oxygenation and cleaning assembly.

[0014] Furthermore, it also includes a water collection component, which includes a water collection trough and a water collection pool. The water collection trough is arranged in the middle position of the wetland pool and divides the wetland pool into a first area and a second area, so as to receive dirt and water on the surface of the filler when the oxygenation and cleaning component cleans the filler. The water collection pool is installed at the side wall of the wetland pool and is connected to the water collection pool. The number of the oxygenation and cleaning components, the water inlet components and the drainage components are two, and they are respectively installed in the first area and the second area.

[0015] Furthermore, it also includes a lifting pump for lifting the supernatant in the water collection tank to the wetland pool.

[0016] Compared with the prior art, the water inlet component can be used to replenish water to the filler, thereby utilizing the growth of plants planted on the filler. At the same time, the drainage component arranged at the bottom of the filler can discharge excess water. In order to increase the oxygen supply, the filler can be oxygenated by the oxygenation and cleaning component to enhance the oxygenation efficiency. At the same time, the oxygenation and cleaning component can allow air to be passed through the filler for backwashing, thereby loosening the filler and flushing dirt such as biofilms and plant residues in the filler to the surface of the wetland pool. Then, the oxygenation and cleaning component can allow water to be passed through the filler for further backwashing, thereby effectively avoiding clogging of the filler. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic top view of the entire anti-clogging artificial wetland with enhanced oxygenation provided by an embodiment of the utility model;

[0018] Figure 2 The present invention is a schematic cross-sectional view of the entire anti-clogging artificial wetland with enhanced oxygenation provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0019] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0020] like Figure 1-2 As shown, the utility model provides an enhanced oxygenated anti-clogging artificial wetland, including a wetland pool 100, an oxygenation and cleaning component 200, a water inlet component 300 and a drainage component 400. A filler 110 is arranged in the wetland pool 100. The oxygenation and cleaning component 200 is built in the wetland pool 100 and is located below the filler 110 to achieve oxygenation or cleaning of the filler 110. The water inlet component 300 is installed on the wetland pool 100 and is located above the filler 110 to supply water to the filler 110. The drainage component 400 is installed below the oxygenation and cleaning component 200 to pump water from the bottom of the wetland pool 100.

[0021] During implementation, the filler 110 can be replenished with water through the water inlet component 300, so as to utilize the growth of plants planted on the filler 110. At the same time, the drainage component 400 set at the bottom of the filler 110 can discharge excess water. In order to increase the oxygen supply, the filler 110 can be oxygenated through the oxygenation and cleaning component 200 to enhance the oxygenation efficiency. At the same time, the oxygenation and cleaning component 200 can pass air to backwash the filler 110, so as to loosen the filler 110 and flush the biofilm and plant residues in the filler 110 to the surface of the wetland pool 100. Then, the oxygenation and cleaning component 200 can pass water to further backwash the filler 110, which can effectively avoid clogging of the filler 110.

[0022] The wetland pool 100 in this embodiment is a rectangular pool structure. The wetland pool 100 is surrounded by a protective structure formed by brick blocks. The blocks are treated for anti-seepage by grouting and plastering. The bottom of the wetland pool 100 is treated for anti-seepage with compacted clay and paved with a polyethylene geomembrane.

[0023] In one embodiment, the filler 110 includes a first filler layer and a second filler layer arranged in sequence vertically upward, and the pores of the first filler layer are smaller than the pores of the second filler layer. The filler 110 is crushed stone or pebbles, divided into two layers, the upper layer has a particle size of 8-12mm and a thickness of 1.5m, and the lower layer has a particle size of 5-8mm and a thickness of 0.5m.

[0024] The oxygenation and cleaning assembly 200 in this embodiment includes an oxygenation and cleaning main pipe 210 and multiple oxygenation and cleaning branch pipes 220. One end of the oxygenation and cleaning main pipe 210 is connected to an external gas source or a water source, and the other end of the oxygenation and cleaning main pipe 210 is connected to multiple oxygenation and cleaning branch pipes 220. The multiple oxygenation and cleaning branch pipes 220 are arranged in parallel in the horizontal direction and arranged below the filler 110. The top of the oxygenation and cleaning branch pipe 220 is formed with multiple oxygenation and cleaning ports along its length direction.

[0025] In order to prevent dirt from falling into the oxygenation and cleaning branch pipe 220 through the oxygenation and cleaning port, causing the oxygenation and cleaning branch pipe 220 to be blocked, in one embodiment, an elastic nozzle is installed on the oxygenation and cleaning port, and a slit is formed in the middle position of the elastic nozzle. When the oxygenation and cleaning branch pipe 220 is aerated or supplied with water, the slit of the elastic nozzle opens, and when the oxygenation and cleaning branch pipe 220 is not aerated or supplied with water, the slit of the elastic nozzle is closed.

[0026] The oxygenating and cleaning main pipe 210 is connected to the multiple oxygenating and cleaning branch pipes 220 through multiple first valves 221, and the oxygenating and cleaning main pipe 210 is connected to an external gas source or water source through a second valve 222. The first valve 221 is provided to facilitate control and adjustment of the gas supply or water supply, and the second valve 222 is provided to facilitate switching of the operation mode, that is, switching between gas supply and water supply.

[0027] Among them, the oxygenated cleaning branch pipe 220 is composed of a rigid polyvinyl chloride (UPVC) liner pipe sleeve and a polyurethane elastic rubber (TPU) hose. The liner pipe has 6 ventilation holes with a diameter of Ø5mm at equal intervals in the circumferential direction, and the spacing between two adjacent circumferential holes in the length direction is 300mm; the aeration hose is opened with air micropores with a pore density of 2500-3000 / m. The pores are slit-shaped. When there is no aeration, the micropores are automatically closed due to elastic contraction. The hole length is 2mm, the longitudinal spacing is 8mm, and the circumferential spacing is 5mm. The ventilation volume of each meter of the aeration branch pipe is 1-2 square meters per hour.

[0028] The water inlet assembly 300 in this embodiment includes two water distribution troughs 310, two water inlet pipes 320 and two third valves 321 arranged on both sides of the wetland pool 100. The two third valves 321 are respectively installed on the two water inlet pipes 320. One end of the two water inlet pipes 320 is connected to an external water source, and the other end of the two water inlet pipes 320 is respectively connected to the two water distribution troughs 310.

[0029] The water distribution trough 310 extends along the length direction of the wetland pool 100 and evenly distributes water at multiple points in a linear manner. Sewage falls freely from the water distribution trough 310 with a drop height of 200-300mm. The drop water is in contact with the air at the same time to achieve natural oxygenation.

[0030] The drainage assembly 400 in this embodiment includes a drainage main pipe 410, multiple drainage branch pipes 420 and a fourth valve 411. The fourth valve 411 is installed on the drainage main pipe 410. One end of the drainage main pipe 410 is connected to an external water pump, and the other end of the drainage main pipe 410 is connected to multiple drainage branch pipes 420. The multiple drainage branch pipes 420 are arranged in parallel in the horizontal direction and arranged below the oxygenation and cleaning assembly 200.

[0031] The present embodiment also includes a water collecting component 500, which includes a water collecting trough 510 and a water collecting pool 520. The water collecting trough 510 is arranged in the middle position of the wetland pool 100 and divides the wetland pool 100 into a first area and a second area, so as to receive dirt and water on the surface of the filler 110 when the oxygenating and cleaning component 200 cleans the filler 110. The water collecting pool 520 is installed at the side wall position of the wetland pool 100 and is connected to the water collecting pool 520. The number of the oxygenating and cleaning components 200, the water inlet component 300 and the drainage component 400 are all two, and they are respectively installed in the first area and the second area.

[0032] In order to effectively utilize the water in the water collection tank 520 , in one embodiment, an air lift pump is further included to lift the supernatant liquid in the water collection tank 520 to the wetland pool 100 .

[0033] Compared with the prior art: the water inlet component 300 can be used to replenish water to the filler 110, so as to utilize the growth of plants planted on the filler 110. At the same time, the drainage component 400 set at the bottom of the filler 110 can discharge excess water. In order to increase the oxygen supply, the filler 110 can be oxygenated by the oxygenation cleaning component 200 to enhance the oxygenation efficiency. At the same time, the oxygenation cleaning component 200 can allow air to be passed through the filler 110 for backwashing, so as to loosen the filler 110 and flush the biofilm and plant residues in the filler 110 to the surface of the wetland pool 100. Then, the oxygenation cleaning component 200 can allow water to be passed through the filler 110 for further backwashing, which can effectively avoid clogging of the filler 110.

[0034] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. An anti-clogging artificial wetland with enhanced oxygenation, characterized in that: include: A wetland pool having fill material disposed therein; An oxygenation and cleaning component is built into the wetland pool and is located below the filler to achieve oxygenation or cleaning of the filler; A water inlet assembly is installed on the wetland pool and located above the filler to supply water to the filler; A drainage assembly is installed below the oxygenating and cleaning assembly to pump water from the bottom of the wetland pool.

2. The anti-clogging artificial wetland with enhanced oxygenation according to claim 1, characterized in that: The wetland pool is a rectangular pool structure, and the surrounding area of ​​the wetland pool is formed by a protective structure formed by brick blocks. The blocks are treated for anti-seepage by grouting and plastering. The bottom of the wetland pool is treated for anti-seepage with compacted clay and paved with a polyethylene geomembrane.

3. The anti-clogging artificial wetland with enhanced oxygenation according to claim 1, characterized in that: The packing comprises a first packing layer and a second packing layer which are arranged in sequence vertically upward, and the pores of the first packing layer are smaller than the pores of the second packing layer.

4. The anti-clogging artificial wetland with enhanced oxygenation according to claim 1, characterized in that: The oxygenation and cleaning component includes an oxygenation and cleaning main pipe and multiple oxygenation and cleaning branch pipes. One end of the oxygenation and cleaning main pipe is connected to an external gas source or a water source, and the other end of the oxygenation and cleaning main pipe is connected to multiple oxygenation and cleaning branch pipes. The multiple oxygenation and cleaning branch pipes are arranged in parallel in the horizontal direction and arranged below the filler. The top of the oxygenation and cleaning branch pipe is formed with multiple oxygenation and cleaning ports along its length direction.

5. The anti-clogging artificial wetland with enhanced oxygenation according to claim 4, characterized in that: An elastic nozzle is installed on the oxygenation and cleaning port, and a slit is formed in the middle of the elastic nozzle. When the oxygenation and cleaning branch pipe is aerated or supplied with water, the slit of the elastic nozzle opens, and when the oxygenation and cleaning branch pipe is not aerated or supplied with water, the slit of the elastic nozzle is closed.

6. The anti-clogging artificial wetland with enhanced oxygenation according to claim 4, characterized in that: The oxygenation and cleaning main pipe is connected to the plurality of oxygenation and cleaning branch pipes via a plurality of first valves respectively, and the oxygenation and cleaning main pipe is connected to an external gas source or water source via a second valve.

7. The anti-clogging artificial wetland with enhanced oxygenation according to claim 1, characterized in that: The water inlet assembly includes two water distribution troughs, two water inlet pipes and two third valves arranged on both sides of the wetland pool. The two third valves are respectively installed on the two water inlet pipes. One end of the two water inlet pipes is connected to an external water source, and the other end of the two water inlet pipes is respectively connected to the two water distribution troughs.

8. The anti-clogging artificial wetland with enhanced oxygenation according to claim 1, characterized in that: The drainage assembly includes a drainage main pipe, multiple drainage branch pipes and a fourth valve. The fourth valve is installed on the drainage main pipe. One end of the drainage main pipe is externally connected to a water pump, and the other end of the drainage main pipe is connected to multiple drainage branch pipes. The multiple drainage branch pipes are arranged in parallel in the horizontal direction and arranged below the oxygenation and cleaning assembly.

9. The anti-clogging artificial wetland with enhanced oxygenation according to claim 1, characterized in that: It also includes a water collection component, which includes a water collection trough and a water collection pool. The water collection trough is arranged in the middle position of the wetland pool and divides the wetland pool into a first area and a second area, so as to receive dirt and water on the surface of the filler when the oxygenation and cleaning component cleans the filler. The water collection pool is installed at the side wall of the wetland pool and is connected to the water collection pool. The number of the oxygenation and cleaning component, the water inlet component and the drainage component are all two, and they are respectively installed in the first area and the second area.

10. The anti-clogging artificial wetland with enhanced oxygenation according to claim 9, characterized in that: The utility model also comprises a lifting pump for lifting the supernatant liquid in the water collection tank to the wetland tank.

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