Biological purification system suitable for blocking and degrading initial rainwater pollution of rivers and lakes

Abstract

The utility model discloses a biological purification system suitable for blocking and degrading initial rainwater pollution of rivers and lakes, which relates to the technical field of rainwater purification and comprises a rainwater stabilization pond and a biological purification pond, a siphon drain pipe is fixedly mounted at the bottom of the rainwater stabilization pond, and the water outlet end of the siphon drain pipe is connected with the biological purification pond; a water collecting groove is formed in the water outlet end of the biological purification tank and is connected with a river channel through a water outlet pipe; the biological purification tank is filled with mineral filler and is used for absorbing and degrading pollutants in the polluted rainwater; a gabion protecting net covers the top of the mineral filler and is used for preventing heavy rain from scouring the mineral filler; aquatic plants are planted above the gabion protection net and are used for filtering pollutants in rainwater; the bottom end of the rainwater stabilization pond is higher than that of the river channel, sewage in the rainwater stabilization pond flows into the biological purification pond through the siphon drain pipe, and purified clear water flows into the river channel. The system provided by the utility model can quickly and efficiently absorb, filter and degrade pollutants in the polluted rainwater.

Description

Technical Field

[0001] The utility model belongs to the technical field of rainwater purification, and in particular relates to a biological purification system suitable for blocking and degrading initial rainwater pollution in rivers and lakes. Background Art

[0002] Initial rainwater, particularly in northern cities, is known for its pollutant content, sometimes exceeding that of domestic sewage. This is because it dissolves large amounts of airborne dust, industrial waste gas, and automobile exhaust, and washes away pollutants from buildings, roads, construction sites, and waste dumps. This causes initial rainwater to contain organic matter, pathogens, heavy metals, oil, grease, suspended solids, and other pollutants. Initial rainwater contains relatively high levels of pollutants, and direct discharge into rivers and lakes without treatment can pollute water bodies.

[0003] Therefore, it is necessary to purify the initial rainwater before discharging it into rivers and lakes. An initial pre-purification system can be set up to collect and collect the initial rainwater into a pre-pond for stabilization. After purification in wetlands, it can be discharged into rivers. This can effectively reduce river pollution and protect the natural water environment. Currently, existing technologies mainly focus on discharging initial rainwater into grass-planted ditches, stabilizing pre-ponds, and treating it in wetlands. These technologies are mainly limited by the uncertainty of rainfall, cannot absorb, filter, and degrade pollutants quickly, and have limited ability to block pollutants. Summary of the Invention

[0004] In response to the defects in the existing technology, the purpose of this utility model is to provide a biological purification system suitable for blocking and degrading initial rainwater pollution in rivers and lakes. The use of this system can quickly and efficiently absorb, filter and degrade pollutants in sewage rainwater.

[0005] In order to achieve the above purpose, the technical solution adopted by the present utility model is as follows:

[0006] A biological purification system suitable for blocking and degrading initial rainwater pollution in rivers and lakes, comprising a rainwater stabilization pond and a biological purification tank. A siphon drain pipe is fixedly installed at the bottom of the rainwater stabilization pond, and the water outlet of the siphon drain pipe is connected to the biological purification tank; the water outlet of the biological purification tank is provided with a water collection ditch, and the water collection ditch is connected to the river through the outlet pipe.

[0007] The interior of the biological purification pool is filled with mineral fillers for absorbing and degrading pollutants in rainwater; the top cover of the mineral fillers is provided with a bin mesh to prevent heavy rain from scouring the mineral fillers; aquatic plants are planted above the bin mesh to filter pollutants in rainwater;

[0008] The bottom of the rainwater stabilization pond is higher than the bottom of the river channel. The sewage in the rainwater stabilization pond flows into the biological purification pool through the siphon drainage pipe. The clean water purified in the biological purification pool is collected through the water collection ditch and then flows into the river channel.

[0009] Furthermore, the biological purification system suitable for blocking and degrading initial rainwater pollution in rivers and lakes as described above is provided with a valve connected between the siphon drain pipe and the biological purification tank.

[0010] Furthermore, the biological purification system suitable for blocking and degrading initial rainwater pollution in rivers and lakes as described above has multiple biological purification pools, and each biological purification pool is provided with a water distribution pipe and two water collection pipes along the length direction of the biological purification pool. The water inlet end of each water distribution pipe passes through the side wall of the biological purification pool and is connected to the water outlet end of the siphon drain pipe, and its water outlet end is immersed in the biological purification pool; the water inlet ends of the two water collection pipes are immersed in the biological purification pool, and their water outlet ends pass through the side wall of the biological purification pool and are connected to the water collection groove.

[0011] Furthermore, in the biological purification system suitable for blocking and degrading initial rainwater pollution in rivers and lakes as described above, multiple biological purification tanks are connected in parallel.

[0012] Furthermore, in the biological purification system suitable for blocking and degrading initial rainwater pollution in rivers and lakes as described above, the water distribution pipe is arranged in the middle of each biological purification pool, and the two water collection pipes are arranged in parallel on both sides of the interior of each biological purification pool.

[0013] Furthermore, in the biological purification system suitable for blocking and degrading initial rainwater pollution in rivers and lakes as described above, the effective depth of the mineral filler in the biological purification pool is 30 cm, the particle size is 30-50 mm, and the filler porosity is 40%.

[0014] Furthermore, in the biological purification system suitable for blocking and degrading initial rainwater pollution in rivers and lakes as described above, the mesh diameter of the Binge protective net is 30 mm.

[0015] Furthermore, in the biological purification system suitable for blocking and degrading initial rainwater pollution in rivers and lakes as described above, the aquatic plants are yellow calamus or reed.

[0016] Furthermore, in the biological purification system suitable for blocking and degrading initial rainwater pollution in rivers and lakes as described above, the biological purification pool and the water collection ditch are made of concrete.

[0017] Furthermore, in the biological purification system suitable for blocking and degrading initial rainwater pollution in rivers and lakes as described above, the depth of the water collection ditch is 50 cm.

[0018] Compared with the existing technology, the biological purification system provided by the present invention, which is suitable for blocking and degrading initial rainwater pollution in rivers and lakes, has the following beneficial effects:

[0019] The utility model adds a biological purification pool on the basis of the rainwater stabilization pond, integrates the rapid filtration of rainwater with biological purification through mineral filler filtration and aquatic plant purification, and can quickly and efficiently absorb, filter and degrade pollutants in dirty rainwater. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of a biological purification system suitable for isolating and degrading initial rainwater pollution in rivers and lakes, provided in an embodiment of the present utility model;

[0021] Figure 2 for Figure 1 A piping layout diagram of the biological purification tank in the system;

[0022] In the figure: 1. River channel; 2. Rainwater stabilization pond; 3. Siphon drain pipe; 4. Valve; 5. Biological purification tank; 6. Water collection ditch; 7. Drain pipe; 8. Water distribution pipe; 9. Water collection pipe; 10. Mineral filler; 11. Binge net; 12. Aquatic plants. DETAILED DESCRIPTION

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0024] Figure 1 The schematic diagram of a biological purification system for blocking and degrading initial rainwater pollution in rivers and lakes, provided in an embodiment of the present invention, is shown. The system includes a rainwater stabilization pond 2 and a biological purification tank 5. A siphon drain pipe 3 is fixedly installed at the bottom of the rainwater stabilization pond 2. The outlet end of the siphon drain pipe 3 is connected to the biological purification tank 5. A water collection ditch 6 is provided at the outlet end of the biological purification tank 5. The water collection ditch 6 is connected to the river 1 via an outlet pipe 7. The bottom of the rainwater stabilization pond 2 is higher than the bottom of the river 1. The sewage in the rainwater stabilization pond 2 flows into the biological purification tank 5 through the siphon drain pipe 3. The clean water after purification in the biological purification tank 5 is collected through the water collection ditch 6 and flows into the river 1.

[0025] like Figure 2As shown, the biological purification pool 5 includes a plurality of side-by-side biological purification pools 5, and each biological purification pool 5 is provided with a water distribution pipe 8 and two water collection pipes 9 along the length direction of the biological purification pool 5. Each water distribution pipe 8 is arranged in the middle of each biological purification pool 5, and its water inlet end passes through the side wall of the biological purification pool 5 and is connected to the water outlet end of the siphon drain pipe 3, and the water outlet end of the water distribution pipe 8 is immersed in the biological purification pool 5; the two water collection pipes 9 are respectively arranged on both sides of the inside of each biological purification pool 5, and their water inlet ends are immersed in the biological purification pool 5, and their water outlet ends pass through the side wall of the biological purification pool 5 and are connected to the water collection groove 6.

[0026] Each biological purification tank 5 is filled with mineral filler 10 for absorbing and degrading pollutants in sewage and rainwater. In a specific embodiment, the particle size of the mineral filler 10 is 30-50 mm, the effective depth of the mineral filler 10 is 30 cm, and the filler porosity is about 40%.

[0027] The mineral fillers 10 are each covered with a sieve screen 11 to prevent heavy rain from eroding the mineral fillers 10. Aquatic plants 12 are planted above the sieve screen 11 to filter pollutants from the rainwater. In one embodiment, the mesh diameter of the sieve screen 11 is 30 mm; the aquatic plants 12 are either yellow calamus or reed.

[0028] In a specific embodiment, a valve 4 is connected between the siphon drain pipe 3 and the biological purification tank 5 .

[0029] In a specific embodiment, the biological purification pool 5 and the water collection ditch 6 are made of concrete.

[0030] In a specific embodiment, the depth of the water collection groove 6 is 50 cm.

[0031] The working principle of the above-mentioned biological purification system suitable for blocking and degrading initial rainwater pollution in rivers and lakes is as follows:

[0032] During the initial rainy season, when the water level in rainwater stabilization pond 2 rises and floods the inlet of siphon drain pipe 3, rainwater flows through the inlet of siphon drain pipe 3 and is accelerated through water distribution pipe 8 into biological purification tank 5. The purified water is then collected through water collection groove 6 and flows into river 1. When the rainfall is too heavy, the rainwater forms surface runoff and can flow directly through the biological purification tank 5 and into the river.

[0033] This utility model provides a biological purification system suitable for blocking and degrading initial stormwater pollution in rivers and lakes. Based on a rainwater stabilization pond, it incorporates a biological purification tank. This system integrates rapid rainwater filtration with biological purification through mineral filler filtration and aquatic plant purification, enabling rapid and efficient absorption, filtration, and degradation of pollutants in polluted rainwater. When rainfall is heavy, rainwater forms surface runoff and flows directly through the biological purification tank into the river. This system is not limited by rainfall volume and has excellent adaptability.

[0034] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. A biological purification system suitable for blocking and degrading initial rainwater pollution in rivers and lakes, characterized by: The system comprises: a rainwater stabilization pond (2) and a biological purification pond (5); a siphon drain pipe (3) is fixedly installed at the bottom of the rainwater stabilization pond (2); the outlet end of the siphon drain pipe (3) is connected to the biological purification pond (5); a water collection ditch (6) is provided at the outlet end of the biological purification pond (5); the water collection ditch (6) is connected to the river (1) via an outlet pipe (7); The interior of the biological purification pool (5) is filled with a mineral filler (10) for absorbing and degrading pollutants in rainwater; a top cover of the mineral filler (10) is provided with a bin mesh (11) for preventing heavy rain from scouring the mineral filler (10); aquatic plants (12) are planted above the bin mesh (11) for filtering pollutants in rainwater; The bottom of the rainwater stabilization pond (2) is higher than the bottom of the river channel (1). The sewage in the rainwater stabilization pond (2) flows into the biological purification pool (5) through the siphon drainage pipe (3). The clean water purified in the biological purification pool (5) is collected through the water collection ditch (6) and then flows into the river channel (1).

2. The biological purification system for isolating and degrading initial rainwater pollution in rivers and lakes according to claim 1 is characterized in that: A valve (4) is connected between the siphon drain pipe (3) and the biological purification tank (5).

3. The biological purification system for isolating and degrading initial rainwater pollution in rivers and lakes according to claim 2 is characterized in that: There are multiple biological purification pools (5), and each biological purification pool (5) is provided with a water distribution pipe (8) and two water collection pipes (9) along the length direction of the biological purification pool (5). The water inlet end of each water distribution pipe (8) passes through the side wall of the biological purification pool (5) and is connected to the water outlet end of the siphon drain pipe (3), and its water outlet end is immersed in the biological purification pool (5); the water inlet ends of the two water collection pipes (9) are immersed in the biological purification pool (5), and the water outlet ends thereof pass through the side wall of the biological purification pool (5) and are connected to the water collection groove (6).

4. The biological purification system for isolating and degrading initial rainwater pollution in rivers and lakes according to claim 3 is characterized in that: The plurality of biological purification tanks (5) are in a parallel structure.

5. The biological purification system for isolating and degrading initial rainwater pollution in rivers and lakes according to claim 4 is characterized in that: The water distribution pipe (8) is arranged in the middle of each biological purification pool (5), and the two water collection pipes (9) are respectively arranged in parallel on both sides of the interior of each biological purification pool (5).

6. The biological purification system for isolating and degrading initial rainwater pollution in rivers and lakes according to any one of claims 1 to 5, characterized in that: The effective depth of the mineral filler (10) in the biological purification pool (5) is 30 cm, the particle size is 30-50 mm, and the filler porosity is 40%.

7. The biological purification system for isolating and degrading initial rainwater pollution in rivers and lakes according to claim 6 is characterized in that: The mesh diameter of the Binger protective net (11) is 30 mm.

8. The biological purification system for isolating and degrading initial rainwater pollution in rivers and lakes according to claim 7 is characterized in that: The aquatic plant (12) is of the species of yellow calamus or reed.

9. The biological purification system for isolating and degrading initial rainwater pollution in rivers and lakes according to claim 8 is characterized in that: The biological purification pool (5) and the water collection ditch (6) are made of concrete.

10. The biological purification system for isolating and degrading initial rainwater pollution in rivers and lakes according to any one of claims 7 to 9, characterized in that: The depth of the water collection groove (6) is 50 cm.

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