Composite vertical flow constructed wetland structure with ecological protection function

Abstract

The utility model discloses a composite vertical flow constructed wetland structure with an ecological protection function, which comprises a static sinking area and a seepage retaining wall which are arranged on one side of a water injection port of a constructed wetland, the static sinking area is arranged along a certain gradient, a sediment collecting groove is constructed at the slope bottom position of the static sinking area, and the seepage retaining wall is arranged in the sediment collecting groove. The utility model relates to the technical field of artificial wetland ecological protection, sewage and sludge enter the static settling area, most of the sludge is collected to the bottom of the static settling area and in the sediment collecting groove under the action of gravity, the sediment collecting groove is formed in the bottom of the static settling area, the sediment collecting groove is formed in the bottom of the static settling area, and the seepage retaining wall is arranged on one side of the sediment collecting groove. Sewage and a small amount of sludge further enter the composite vertical filtering area through the seepage retaining wall, penetrate through the filler layer to effectively intercept the sludge under the action of gravity, are further collected by the water collecting tank and are discharged into the constructed wetland through the flow guide pipe, so that the content of the sludge entering the constructed wetland can be effectively reduced, and the sewage treatment efficiency is improved. The constructed wetland water collecting pipe is prevented from being blocked.

Description

Technical Field

[0001] The utility model relates to the technical field of artificial wetland ecological protection, in particular to a composite vertical flow artificial wetland structure with ecological protection function. Background Art

[0002] Artificial wetlands are artificially constructed and controlled surfaces similar to swamps. Sewage and sludge are distributed in a controlled manner onto the artificially constructed wetlands. As sewage and sludge flow in a certain direction, they are treated ecologically by utilizing the physical, chemical, and biological synergistic effects of soil, artificial media, plants, and microorganisms. However, artificial wetlands have high construction requirements and relatively complex operation and management. Large amounts of sludge enter artificial wetlands, which are prone to blockage. Existing data show that blockages mainly occur in the middle and upper layers of the water collection pipes and the matrix. Blockage of the water collection pipes will render the overall function of the wetland ineffective, and the water in the wetland cannot be discharged, seriously affecting the efficiency of sewage purification and even causing root rot or disease in the plants in the wetland. In view of this, in-depth research was conducted on the above-mentioned issues, which led to the creation of this case. Utility Model Content

[0003] In view of the deficiencies of the prior art, the utility model provides a composite vertical flow artificial wetland structure with ecological protection function, which solves the problems raised in the background technology.

[0004] To achieve the above purpose, the utility model is implemented through the following technical solutions: a composite vertical flow artificial wetland structure with ecological protection function, including a static settling area and a seepage retaining wall arranged on one side of the artificial wetland water injection port, the static settling area is arranged along a certain slope, a sediment collection trough is constructed at the bottom of the slope of the static settling area, the seepage retaining wall is arranged on one side of the sediment collection trough, a composite vertical filtration area is arranged on one side of the seepage retaining wall, and packing layers are arranged in sequence from top to bottom in the composite vertical filtration area, and the particle size of the packing layers is fine at the top and coarse at the bottom; a hydrophobic diversion component is arranged at the bottom of the composite vertical filtration area;

[0005] The hydrophobic diversion assembly includes a water collection trough, a diversion pipe and a backwashing component. The water collection trough is arranged at the lower part of the composite vertical filtration area, the diversion pipe is arranged on the side wall of the water collection trough along an inclined direction and the outlet end points to the side of the artificial wetland, and the backwashing component is arranged in the water collection trough and one end extends into the packing layer.

[0006] The above-mentioned reverse flushing component includes a water supply pipe, a water distribution pipe and a flushing pipe. The water supply pipe is arranged on one side of the water collection tank along the length direction of the water collection tank and one end is connected to the booster pump. The water distribution pipe is inserted on the side wall of the water supply pipe along a certain interval and one end extends into the water collection tank. The flushing pipe extends into the packing layer and one end is connected to the water distribution pipe.

[0007] The above-mentioned flushing pipe is a hot-dip galvanized steel pipe with holes in the side wall.

[0008] The filler layer includes an activated carbon particle layer, a fine sand layer, a coarse sand layer and a crushed stone layer from top to bottom.

[0009] A reinforced concrete partition is constructed on the top of the water collection tank, and water permeable holes are opened on the reinforced concrete partition.

[0010] Ecological floating boards are arranged in the above-mentioned static sedimentation area and the composite vertical filtration area, and aquatic plants are planted on the ecological floating boards.

[0011] The utility model provides a composite vertical flow artificial wetland structure with ecological protection function. It has the following beneficial effects: the composite vertical flow artificial wetland structure with ecological protection function partially transforms the existing artificial wetland, sets a static settling area and a seepage retaining wall on one side of the artificial wetland water injection port, sewage and sludge enter the static settling area, most of the sludge is collected at the bottom of the static settling area and the sediment collection tank under the action of gravity, sewage and a small amount of sludge further pass through the seepage retaining wall and enter the composite vertical filtration area, under the action of gravity, after passing through the packing layer to effectively intercept the sludge, the sewage is further collected in the water collection tank and discharged into the artificial wetland through the diversion pipe, which can effectively reduce the sludge content entering the artificial wetland and avoid clogging of the artificial wetland water collection pipe. At the same time, after a period of use, by configuring a reverse flushing component, the reverse flushing effect of the packing layer can be realized, and the operation stability of the structure is further improved. In addition, the clean water injected by the flushing operation can also further improve the water quality in the artificial wetland. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the main structure of a composite vertical flow artificial wetland structure with ecological protection function described in the utility model.

[0013] Figure 2 It is a schematic diagram of the cross-sectional structure of the composite vertical filtration area of ​​the utility model.

[0014] In the figure: 1. artificial wetland; 2. static settling area; 3. seepage retaining wall; 4. sediment collection trough; 5. composite vertical filtration area; 6. packing layer; 7. water collection trough; 8. diversion pipe; 9. water supply pipe; 10. water distribution pipe; 11. flushing pipe; 12. reinforced concrete partition; 13. water permeable hole; 14. ecological floating plate; 601. activated carbon granular layer; 602. fine sand layer; 603. coarse sand layer; 604. gravel layer. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] Embodiment: In conjunction with the specification Figure 1-2 It can be seen that in order to solve the problem in the prior art that a large amount of sludge enters the artificial wetland and is prone to blockage, the present application designs a composite vertical flow artificial wetland structure with ecological protection function, which specifically includes a static settling area 2 and a seepage retaining wall 3 arranged on one side of the water injection port of the artificial wetland 1, wherein the static settling area 2 is arranged along a certain slope, and a sediment collection trough 4 is constructed at the bottom of the slope of the static settling area 2, the seepage retaining wall 3 is arranged on one side of the sediment collection trough 4, and a composite vertical filtration area 5 is arranged on one side of the seepage retaining wall 3, and packing layers 6 are arranged in sequence from top to bottom in the composite vertical filtration area 5, and the particle size of the packing layer 6 is fine at the top and coarse at the bottom; a hydrophobic diversion component is arranged at the lower part of the composite vertical filtration area 5; wherein the hydrophobic diversion component includes a water collecting trough 7, a diversion pipe 8 and a backwashing component, the water collecting trough 7 is arranged at the lower part of the composite vertical filtration area 5, the diversion pipe 8 is arranged on the side wall of the water collecting trough 7 along the inclined direction and the outlet end points to the side of the artificial wetland 1, and the backwashing The washing component is arranged in the water collection tank 7 and one end extends into the packing layer 6. The existing artificial wetland 1 is partially modified. A static settling area 2 and a seepage retaining wall 3 are arranged on one side of the water injection port of the artificial wetland 1. The sewage and sludge enter the static settling area 2. Most of the sludge is collected at the bottom of the static settling area 2 and the sediment collection tank 4 under the action of gravity. The sewage and a small amount of sludge further pass through the seepage retaining wall 3 and enter the composite vertical filtration area 5. Under the action of gravity, the sludge is effectively intercepted after passing through the packing layer 6. The sewage is further collected in the water collection tank 7 and discharged into the artificial wetland 1 through the diversion pipe 8, which can effectively reduce the sludge content entering the artificial wetland 1 and avoid clogging of the water collection pipe of the artificial wetland 1. At the same time, after a period of use, the reverse flushing component is configured to achieve the reverse flushing effect of the packing layer 6, further improving the operation stability of the structure. In addition, the clean water injected in the flushing operation can also further improve the water quality in the artificial wetland 1.

[0017] In the specific implementation process, the above-mentioned reverse flushing component includes a water supply pipe 9, a water distribution pipe 10 and a flushing pipe 11. The water supply pipe 9 is arranged on one side of the water collection tank 7 along the length direction of the water collection tank 7 and one end is connected to the booster pump. The water distribution pipe 10 is inserted on the side wall of the water supply pipe 9 along a certain interval and one end extends into the water collection tank 7. The flushing pipe 11 extends into the packing layer 6 and one end is connected to the water distribution pipe 10, wherein the flushing pipe 11 is a hot-dip galvanized steel pipe with a side wall opening. After the present structure has been running for a period of time, the booster pump is started, and the booster pump is used to pressurize the cleaning water into the water supply pipe 9, and further injected into the flushing pipe 11 through the water distribution pipe 10. The flushing water is sprayed into the packing layer 6 through the opening on the side wall of the flushing pipe 11 to flush the packing layer 6 and improve the water permeability of the packing layer 6.

[0018] During the specific implementation process, a reinforced concrete partition 12 is constructed on the top of the above-mentioned water collection tank 7, and a water-permeable hole 13 is opened on the reinforced concrete partition 12 for water permeation and supporting the filler layer 6. The above-mentioned filler layer 6 includes an activated carbon particle layer 601, a fine sand layer 602, a coarse sand layer 603 and a gravel layer 604 from top to bottom.

[0019] In the specific implementation process, ecological floating plates 14 are provided in the above-mentioned static sedimentation area 2 and the composite vertical filtration area 5. Aquatic plants are planted on the ecological floating plates 14, which are beneficial to the biological purification of sewage and improve the ornamental value of the wetland landscape.

[0020] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A composite vertical flow artificial wetland structure with ecological protection function, comprising a static settling area and a seepage retaining wall arranged on one side of the artificial wetland water injection port, characterized in that: The static settling area is arranged along a certain slope, a sediment collection trough is constructed at the bottom of the slope of the static settling area, the seepage retaining wall is arranged on one side of the sediment collection trough, a composite vertical filtration area is arranged on one side of the seepage retaining wall, and packing layers are arranged in sequence from top to bottom in the composite vertical filtration area, and the particle size of the packing layers is fine at the top and coarse at the bottom; a hydrophobic diversion component is arranged at the bottom of the composite vertical filtration area; The hydrophobic diversion assembly includes a water collection trough, a diversion pipe and a backwashing component. The water collection trough is arranged at the lower part of the composite vertical filtration area, the diversion pipe is arranged on the side wall of the water collection trough along an inclined direction and the outlet end points to the side of the artificial wetland, and the backwashing component is arranged in the water collection trough and one end extends into the packing layer.

2. The composite vertical flow artificial wetland structure with ecological protection function according to claim 1 is characterized in that: The reverse flushing component includes a water supply pipe, a water distribution pipe and a flushing pipe. The water supply pipe is arranged on one side of the water collection tank along the length direction of the water collection tank and one end is connected to the booster pump. The water distribution pipe is inserted on the side wall of the water supply pipe at a certain interval and one end extends into the water collection tank. The flushing pipe extends into the packing layer and one end is connected to the water distribution pipe.

3. The composite vertical flow artificial wetland structure with ecological protection function according to claim 2 is characterized in that: The flushing pipe is a hot-dip galvanized steel pipe with holes in the side wall.

4. The composite vertical flow artificial wetland structure with ecological protection function according to claim 1, characterized in that: The filler layer includes an activated carbon particle layer, a fine sand layer, a coarse sand layer and a crushed stone layer in order from top to bottom.

5. The composite vertical flow artificial wetland structure with ecological protection function according to claim 1, characterized in that: A reinforced concrete partition is constructed on the top of the water collecting tank, and water permeable holes are opened on the reinforced concrete partition.

6. The composite vertical flow artificial wetland structure with ecological protection function according to claim 1, characterized in that: Ecological floating boards are arranged in the static sedimentation area and the composite vertical filtering area, and aquatic plants are planted on the ecological floating boards.

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