Ecological pretreatment system for river and lake rainwater discharge port

Abstract

The utility model discloses an ecological pretreatment system for a river and lake rainwater discharge port, which comprises a treatment box, three groups of partition plates are arranged in the treatment box at equal intervals, net film cloth is arranged on the partition plates, a sieve plate is arranged on one side of the partition plates in the treatment box, a gravel bed layer is arranged on one side of the sieve plate in the treatment box, and the net film cloth is arranged on the gravel bed layer. Emergent aquatic plants are planted on the gravel bed layer, and two groups of ecological floating islands are mounted in the treatment box. The sewage treatment device has the beneficial effects that a four-stage purification treatment method is adopted to replace a medicament treatment method, and the water quality of initial sewage and rainwater is purified by utilizing the grid settling region, the ecological filtering region, the anaerobic reduction region and the aerobic reduction region, so that the treatment effect is good, and the environmental protection property is high.

Description

Technical Field

[0001] The utility model relates to the technical field of river and lake rainwater treatment systems, and in particular to an ecological pretreatment system for river and lake rainwater outlets. Background Art

[0002] Stormwater treatment is the purification process of surface runoff (rainwater, snowmelt, and irrigation water) in urban areas. Depending on the drainage system (separate or combined), rainwater treatment can be performed independently or combined with domestic and industrial wastewater. The volume of rainwater treated is calculated based on the volume of stormwater drains (based on the dilution factor or the volume of water used at the stormwater pumping station).

[0003] During the discharge process of existing river and lake rainwater, pollutants in the water are treated by setting up a chemical treatment system at the outlet. Although the use of the chemical treatment system can achieve the effect of water treatment, the added chemicals will have an impact on the ecological environment, which in turn leads to its low environmental protection and poor use effect. Therefore, there is an urgent need for an ecological pretreatment system for river and lake rainwater outlets to solve the above problems. Utility Model Content

[0004] (1) Technical issues to be resolved

[0005] The technical problem to be solved by the utility model is aimed at the current status of the existing technology. A four-stage purification treatment method is provided, which utilizes a grid sedimentation area, an ecological filtration area, an anaerobic reduction area and an aerobic reduction area to purify the initial sewage and rainwater. The ecological pretreatment system not only has good treatment effect but also is highly environmentally friendly.

[0006] (2) Technical solution

[0007] The present invention is realized through the following technical scheme: The present invention proposes an ecological pretreatment system for rainwater outlets of rivers and lakes, comprising a treatment box, three groups of partitions are installed at equal intervals in the treatment box, mesh cloth is installed on the partitions, a sieve plate is installed on one side of the partition in the treatment box, a gravel bed is installed on one side of the sieve plate in the treatment box, emergent plants are planted on the gravel bed, two groups of ecological floating islands are installed in the treatment box, aquatic plants are planted on the ecological floating islands, multiple groups of artificial water plants are hung in an array on the bottom end of the ecological floating islands, a blower is installed on the back wall of the treatment box, an air duct is fixed on the output end of the blower, one end of the air duct is connected to a diversion pipe, and multiple groups of aeration pipes are installed in an array on the diversion pipe.

[0008] Furthermore, the partition is welded in the processing box, and the mesh cloth is fixed on the partition by screws, and the mesh cloth is made of 80-mesh HDPE material.

[0009] By adopting the above technical solution, the partition divides the inside of the treatment box into a grid sedimentation area, an ecological filtration area, an anaerobic reduction area and an aerobic reduction area, and the mesh cloth can make the areas connected.

[0010] Furthermore, the sieve plate is fixed between the processing box and the partition plate, the sieve hole of the sieve plate is 8-16 mm, and the material of the sieve plate is stainless steel.

[0011] By adopting the above technical solution, the sieve plate can intercept suspended matter and garbage in initial sewage and rainwater, and reduce the load of subsequent processes by removing large particles of SS and garbage, while avoiding clogging of subsequent units or equipment.

[0012] Furthermore, the gravel bed is filled between the partitions, the gravel bed is limestone with a particle size of 20 to 40 mm and is surrounded on the outside by a gabion (filled with limestone), and the emergent plant is an evergreen aquatic iris.

[0013] By adopting the above technical solution, the gravel bed layer and the emergent plants can form a plant gravel filter bed system, which mainly utilizes the physical and chemical effects in the ecosystem to achieve the removal of SS and phosphorus through filtration, adsorption, precipitation, plant absorption and other methods.

[0014] Furthermore, the ecological floating island is composed of a 33*33 cm floating basin fixed by a square buckle or a cable tie, and the size of the ecological floating island can be spliced ​​at will.

[0015] By adopting the above technical solution, one of the two groups of ecological floating islands is used to create an anaerobic zone to achieve the degradation / transformation of organic matter and nutrients (N and P, etc.) in the water body, and the other group is used to grow biofilm on the artificial aquatic plants by introducing microorganisms. At the same time, a submerged aeration system is deployed to oxygenate the area to form an aerobic environment.

[0016] Furthermore, the artificial aquatic grass is a braided filler and the filler carrier is an elastic fiber filler (medium density) with a diameter of 20 cm and a length of 150-200 cm.

[0017] By adopting the above technical solution, the artificial aquatic plants are convenient for microorganisms to form biofilms.

[0018] Furthermore, the blower is mounted on the back wall of the processing box by means of bolts, and the air guide pipe is fixedly connected to the blower and the diversion pipe.

[0019] By adopting the above technical solution, the wind generated by the blower enters the diversion pipe through the air guide pipe and is diverted.

[0020] Furthermore, the aeration pipe is connected to the diversion pipe via threads, and the aeration pipe array is laid at the bottom end of the treatment box.

[0021] By adopting the above technical solution, the aeration pipe can aerate the aerobic reduction zone, thereby allowing microorganisms to perform aerobic treatment on the water.

[0022] (3) Beneficial effects

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] In order to solve the problem that during the discharge of existing river and lake rainwater, a chemical treatment system is set up at the outlet to treat pollutants in the water. Although the chemical treatment system can achieve the effect of water treatment, the added chemicals will have an impact on the ecological environment, which in turn leads to its low environmental protection and poor use effect. The utility model adopts a four-stage purification treatment method to replace the chemical treatment method, and uses the grid sedimentation area, ecological filtration area, anaerobic reduction area and aerobic reduction area to purify the water quality of initial sewage and rainwater, which not only has a good treatment effect but also is highly environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a structural diagram of an ecological pretreatment system for rainwater outlets of rivers and lakes described in the utility model;

[0026] Figure 2 This is a back view of a treatment box in an ecological pretreatment system for rainwater outlets of rivers and lakes according to the present invention;

[0027] Figure 3 It is a main cross-sectional view of a treatment box in an ecological pretreatment system for rainwater outlets of rivers and lakes described in the utility model.

[0028] The following are the descriptions of the reference numerals:

[0029] 1. Treatment box; 2. Sieve plate; 3. Partition; 4. Emergent plants; 5. Gravel bed; 6. Ecological floating island; 7. Aquatic plants; 8. Diversion pipe; 9. Air guide pipe; 10. Blower; 11. Membrane cloth; 12. Artificial aquatic plants; 13. Aeration pipe. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0031] like Figure 1-Figure 3As shown, in this embodiment, an ecological pretreatment system for river and lake rainwater outlets includes a treatment box 1, three groups of partitions 3 are installed at equal intervals in the treatment box 1, and mesh cloth 11 is installed on the partitions 3. The partitions 3 divide the treatment box 1 into a grid sedimentation area, an ecological filtration area, an anaerobic reduction area and an aerobic reduction area. The mesh cloth 11 can make the various areas connected. A sieve plate 2 is installed on one side of the partition 3 in the treatment box 1. The sieve plate 2 can intercept suspended matter and garbage in initial sewage and rainwater, and reduce the load of subsequent processes by removing large particles of SS and garbage, etc., while avoiding clogging problems of subsequent units or equipment. A gravel bed layer 5 is installed on one side of the sieve plate 2 in the treatment box 1, and emergent plants 4 are planted on the gravel bed layer 5. The gravel bed layer 5 and the emergent plants 4 can form a plant gravel filter bed system, which mainly utilizes physical and chemical effects in the ecosystem through filtration, adsorption, precipitation, etc. , plant absorption and other methods to achieve the removal of SS and phosphorus. Two groups of ecological floating islands 6 are installed in the treatment box 1. Aquatic plants 7 are planted on the ecological floating islands 6. Multiple groups of artificial water plants 12 are hung in an array at the bottom of the ecological floating islands 6. One group of the two groups of ecological floating islands 6 is used to create an anaerobic zone to achieve the degradation / transformation of organic matter and nutrients (N and P, etc.) in the water body, and the other group uses microorganisms to hang film on the artificial water plants 12. At the same time, a submerged aeration system is deployed to oxygenate the area to form an aerobic environment. A blower 10 is installed on the back wall of the treatment box 1. An air duct 9 is fixed on the output end of the blower 10. A diversion pipe 8 is connected to one end of the air duct 9. The wind generated by the blower 10 enters the diversion pipe 8 through the air duct 9 for diversion. Multiple groups of aeration pipes 13 are installed in an array on the diversion pipe 8. The aeration pipe 13 can aerate the aerobic reduction zone, thereby allowing microorganisms to aerobically treat the water.

[0032] like Figure 1-Figure 3 As shown, in this embodiment, the partition 3 is welded in the processing box 1, the mesh cloth 11 is fixed to the partition 3 by screws, the mesh cloth 11 is made of 80 mesh HDPE, the sieve plate 2 is fixed between the processing box 1 and the partition 3, the sieve hole of the sieve plate 2 is 8-16 mm, the material of the sieve plate 2 is stainless steel, the gravel bed layer 5 is filled between the partitions 3, the gravel bed layer 5 is limestone with a particle size of 20 to 40 mm and the outside is surrounded by limestone filled in a gabion, and the emergent plant 4 is an evergreen aquatic iris.

[0033] like Figure 1-Figure 3 As shown, in this embodiment, the ecological floating island 6 is composed of a 33*33 cm floating basin fixed by a square clip or a cable tie. The size of the ecological floating island 6 can be spliced ​​at will. The artificial aquatic grass 12 is a braided filler and the filler carrier is an elastic fiber filler (medium density) with a diameter of 20 cm and a length of 150-200 cm. The blower 10 is installed on the back wall of the treatment box 1 by bolts. The air duct 9 is fixedly connected to the blower 10 and the diversion pipe 8. The aeration pipe 13 is connected to the diversion pipe 8 by a thread. The aeration pipe 13 array is laid at the bottom end of the treatment box 1.

[0034] The specific implementation process of this embodiment is as follows: When in use, sewage first enters the grid sedimentation area. At this time, the screen plate 2 can intercept the suspended matter and garbage in the initial sewage and rainwater, and reduce the load of subsequent processes by removing large particles of SS and garbage, while avoiding clogging problems of subsequent units or equipment. Then it enters the ecological filtration area. The gravel bed layer 5 and the emergent plants 4 can form a plant gravel filter bed system, which mainly utilizes physical and chemical effects in the ecosystem to remove SS and phosphorus through filtration, adsorption, precipitation, plant absorption, etc., and then enters the anaerobic reduction area. This area is not aerated, creating an anaerobic area to achieve degradation / transformation of organic matter and nutrients (N and P, etc.) in the water body. Finally, it enters the aerobic reduction area, where microorganisms are introduced to form biofilm on the artificial aquatic plants 12. At the same time, the submerged aeration system composed of the blower 10, aeration pipe 13, air guide pipe and diversion pipe 8 oxygenates the area, forming an aerobic environment and treating the water.

[0035] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An ecological pretreatment system for rainwater outlets of rivers and lakes, characterized by: The invention comprises a treatment box (1), wherein three groups of partitions (3) are installed at equal intervals in the treatment box (1), and mesh cloths (11) are installed on the partitions (3). A sieve plate (2) is installed on one side of the partitions (3) in the treatment box (1), and a gravel bed (5) is installed on one side of the sieve plate (2) in the treatment box (1). Emergent plants (4) are planted on the gravel bed (5). Two groups of ecological floating islands (6) are installed in the treatment box (1), and aquatic plants (7) are planted on the ecological floating islands (6). Multiple groups of artificial water plants (12) are suspended in an array at the bottom ends of the ecological floating islands (6). A blower (10) is installed on the back wall of the treatment box (1), and an air guide pipe (9) is fixed on the output end of the blower (10). One end of the air guide pipe (9) is connected to a diversion pipe (8), and multiple groups of aeration pipes (13) are installed in an array on the diversion pipe (8).

2. The ecological pretreatment system for river and lake rainwater outlets according to claim 1, characterized in that: The partition (3) is welded inside the processing box (1), and the mesh cloth (11) is fixed on the partition (3) by screws. The mesh cloth (11) is made of 80-mesh HDPE material.

3. The ecological pretreatment system for river and lake rainwater outlets according to claim 1, characterized in that: The sieve plate (2) is fixed between the processing box (1) and the partition plate (3), the sieve hole of the sieve plate (2) is 8-16 mm, and the material of the sieve plate (2) is stainless steel.

4. The ecological pretreatment system for river and lake rainwater outlets according to claim 1, characterized in that: The gravel bed layer (5) is filled between the partitions (3), the gravel bed layer (5) is limestone with a particle size of 20 to 40 mm and is surrounded on the outside by a gabion (filled with limestone), and the emergent plant (4) is an evergreen aquatic iris.

5. The ecological pretreatment system for river and lake rainwater outlets according to claim 1, characterized in that: The ecological floating island (6) is composed of a 33*33 cm floating basin fixed by a square buckle or a cable tie, and the size of the ecological floating island (6) can be spliced ​​at will.

6. The ecological pretreatment system for river and lake rainwater outlets according to claim 5, characterized in that: The artificial water grass (12) is a braided filler and the filler carrier is an elastic fiber filler (medium density) with a diameter of 20 cm and a length of 150-200 cm.

7. The ecological pretreatment system for river and lake rainwater outlets according to claim 6, characterized in that: The blower (10) is mounted on the back wall of the processing box (1) by means of bolts, and the air guide pipe (9) is fixedly connected to the blower (10) and the diverter pipe (8).

8. The ecological pretreatment system for river and lake rainwater outlets according to claim 7, characterized in that: The aeration pipe (13) is connected to the diversion pipe (8) via threads, and the aeration pipe (13) is arranged in an array at the bottom end of the treatment box (1).

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