Shallow lake water quality improvement system

Abstract

The utility model relates to a shallow lake water quality improvement system, which belongs to the technical field of water quality treatment and comprises a filter bed, aquatic plants are planted on the filter bed, a water collecting pipe network is arranged in the filter bed, a connecting pipeline is communicated with the water collecting pipe network, and the connecting pipeline extends to the lake surface and is connected with an oxygen explosion device. The filter bed comprises a rammed earth layer which is arranged at the lake bottom and used for consolidating bottom mud of the lake bottom, geotechnical cloth for preventing soil body loss is laid on the rammed earth layer, a gravel water collecting layer for increasing pores is arranged on the upper portion of the geotechnical cloth, and volcanic rock filter materials with filtering, adsorption and biological adhesiveness are laid on the upper portion of the gravel water collecting layer. According to the water quality improvement system for the shallow lake, the water quality improvement system is adopted in the shallow lake or a pond, the suspension time of most suspended particles in a water body can be effectively shortened, the water body can be more quickly purified, the catchment pipeline is arranged on the filter bed, a hydrodynamic path between the lake surface and the lake bottom is lengthened, and the water quality of the lake body can be more thoroughly purified.

Description

Technical Field

[0001] This utility model relates to the field of water quality treatment technology, specifically a shallow lake water quality improvement system. Background Technology

[0002] Shallow lakes have a small volume (water storage capacity), limited environmental capacity, and a weak ability to dilute externally introduced nutrients. Their ecosystems are relatively fragile, with strong material exchange between the lake water and bottom sediment, resulting in slow sedimentation and often poor water quality. Therefore, measures such as increasing hydrodynamics and aeration are frequently used to improve water quality. However, these measures easily disturb the bottom sediment, causing turbidity and affecting sensory perception. Furthermore, most of the hydrodynamic activity only affects the upper part of the lake and cannot penetrate to the bottom, thus failing to achieve optimal results. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a shallow lake water quality improvement system, which has the advantages of effectively shortening the suspension time of most suspended particles in the water and more thoroughly purifying the lake water quality. It solves the problem of easily causing disturbance of bottom sediment, resulting in water turbidity and poor water quality improvement effect.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a shallow lake water quality improvement system, including a filter bed, on which aquatic plants are planted, a water collection network is arranged inside the filter bed, a connecting pipe is connected to the water collection network, and the connecting pipe extends to the lake surface and is connected to an aeration device.

[0005] The filter bed includes a compacted soil layer set on the lake bottom to consolidate the lake bottom sediment, a geotextile laid on the compacted soil layer to prevent soil loss, a gravel water-collecting layer on top of the geotextile to increase porosity, a volcanic rock filter material with filtration, adsorption and biological adhesion properties laid on top of the gravel water-collecting layer, and a gravel covering layer for planting aquatic plants laid on top of the volcanic rock filter material.

[0006] Furthermore, the thickness of the compacted soil layer is not less than 300mm, the thickness of the crushed stone water-gathering layer is not less than 300mm and the particle size is 20-30mm, the thickness of the volcanic rock filter material is not less than 300mm and the particle size is 20-30mm, and the thickness of the crushed stone covering layer is not less than 200mm and the particle size is 20-30mm.

[0007] Furthermore, the water collection network includes a built-in water collection pipe and an outer drainage blind pipe. The water collection pipe is made of plastic and has evenly distributed small holes to facilitate the uniform pumping of water from the filter bed into the water collection pipe.

[0008] Furthermore, the drainage blind pipe is made of porous synthetic fiber material, and the drainage blind pipe is wrapped with geotextile to prevent particulate matter from clogging the water collection network.

[0009] Furthermore, the water collection pipes are arranged in the gravel water collection layer, evenly distributed in a grid pattern, with an interval of not less than 3000mm, and the horizontal and vertical water collection pipes are interconnected.

[0010] Furthermore, the oxygenation device is connected to the water pump via a three-way valve, which is equipped with a switch control valve. The oxygenation device and the water pump are connected to the power supply unit, which is connected to the solar panel. Both the water pump and the oxygenation device are mounted on the float.

[0011] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0012] This shallow lake water quality improvement system, when used in shallow lakes or ponds, can effectively shorten the suspension time of most suspended particles in the water, purifying the water more quickly. By arranging the water collection pipes on the filter bed, the hydrodynamic path between the lake surface and the lake bottom is lengthened, allowing for more thorough purification of the lake water quality. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram showing the distribution of the water collection network and the oxygenation device of this utility model;

[0015] Figure 3 This is a detailed drawing of the water collection pipe of this utility model.

[0016] In the diagram: 1. Filter bed, 101. Compacted soil layer, 102. Geotextile, 103. Crushed stone water-collecting layer, 104. Volcanic rock filter material, 105. Crushed stone covering layer, 2. Aquatic plants, 3. Drainage network, 301. Drainage pipe, 302. Drainage blind pipe, 4. Connecting pipe, 5. Aeration device. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figures 1 to 3 The shallow lake water quality improvement system in this embodiment includes a filter bed 1, on which aquatic plants 2 are planted. A water collection network 3 is arranged inside the filter bed 1, and a connecting pipe 4 is connected to the water collection network 3. The connecting pipe 4 extends to the lake surface and is connected to an aeration device 5, which can also be a water pump.

[0019] The water collection network 3 includes an internal water collection pipe 301 and an outer drainage blind pipe 302. The water collection pipe 301 is made of plastic and has evenly distributed small holes to facilitate the uniform pumping of water from the filter bed into the water collection pipe. The drainage blind pipe is made of porous synthetic fiber material and is wrapped with geotextile to prevent particulate matter from clogging the water collection network.

[0020] During operation, the oxygenation device 5 draws water into the connecting pipe 4, and the water collection network 3 is subjected to suction. Water is absorbed from all directions through the evenly distributed holes in the water collection network 3, forming a hydrodynamic circulation between the lake surface and the lake bottom. This not only directs the hydrodynamic direction of the lake water from top to bottom, accelerating the settling of impurities and making the lake water clearer faster, but also maximizes the vertical circulation distance of the hydrodynamic flow, helping the flowing water to reach all parts of the lake, including the bottom sediment, resulting in a better water purification effect. Meanwhile, the aquatic plants 2 planted on the filter bed 1 can decompose some of the settled nutrients more quickly.

[0021] The filter bed 1 includes a compacted soil layer 101 set on the lake bottom to consolidate the lake bottom sediment, a geotextile 102 laid on the compacted soil layer 101 to prevent soil loss, a gravel water-collecting layer 103 with increased porosity set on the geotextile 102, a volcanic rock filter material 104 laid on the gravel water-collecting layer 103, and a gravel covering layer 105 for planting aquatic plants 2 laid on the volcanic rock filter material 104.

[0022] The compacted soil layer 101 has a thickness of not less than 300 mm, the gravel water-gathering layer 103 has a thickness of not less than 300 mm and a particle size of 20-30 mm, the volcanic rock filter material 104 has a thickness of not less than 300 mm and a particle size of 20-30 mm, the gravel covering layer 105 has a thickness of not less than 200 mm and a particle size of 20-30 mm, and the water collection pipes 301 are arranged in the gravel water-gathering layer 103 in a grid pattern, with an interval of not less than 3000 mm, and the horizontal and vertical water collection pipes are interconnected.

[0023] The aeration device 5 is connected to a water pump via a T-junction. The water pump is a backwash pump, and a control valve is installed on the T-junction. The aeration device 5 and the water pump are connected to a power supply unit, which is connected to a solar panel. Both the water pump and the aeration device 5 are mounted on a float. After the aeration device 5 has been working continuously for a period of time, it supplies water to the water collection pipe through the backwash pump, creating an impact force that better disturbs impurities at the bottom of the water, resulting in a better water purification effect.

[0024] The working principle of the above embodiments is as follows:

[0025] The aeration device 5 draws water from the connecting pipe 4, and the water collection network 3 is subjected to suction. Water is absorbed from all sides through the evenly distributed holes in the water collection network 3, forming a hydrodynamic circulation between the lake surface and the lake bottom. This not only directs the hydrodynamic direction of the lake water from top to bottom, accelerating the settling of impurities and making the lake water clearer faster, but also maximizes the vertical circulation distance of the hydrodynamic flow, helping the flowing water to reach all parts of the lake, including the bottom sediment, resulting in a better water purification effect. Aquatic plants 2 planted on the filter bed 1 can decompose some of the settled nutrients more quickly. Arranging the water collection pipe on the filter bed and lengthening the hydrodynamic path between the lake surface and the lake bottom can purify the lake water more thoroughly.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A shallow lake water quality improvement system, comprising a filter bed (1), characterized in that: Aquatic plants (2) are planted on the filter bed (1), and a water collection network (3) is arranged inside the filter bed (1). A connecting pipe (4) is connected to the water collection network (3), and the connecting pipe (4) extends to the lake surface and is connected to an aeration device (5). The filter bed (1) includes a compacted soil layer (101) set on the bottom of the lake to consolidate the bottom sediment, a geotextile (102) laid on the compacted soil layer (101) to prevent soil loss, a gravel water-collecting layer (103) with increased porosity set on the top of the geotextile (102), a volcanic rock filter material (104) laid on the top of the gravel water-collecting layer (103), and a gravel covering layer (105) for planting aquatic plants (2) laid on the top of the volcanic rock filter material (104).

2. The shallow lake water quality improvement system according to claim 1, characterized in that: The thickness of the compacted soil layer (101) is not less than 300 mm, the thickness of the crushed stone water-gathering layer (103) is not less than 300 mm and the particle size is 20~30 mm, the thickness of the volcanic rock filter material (104) is not less than 300 mm and the particle size is 20~30 mm, and the thickness of the crushed stone covering layer (105) is not less than 200 mm and the particle size is 20~30 mm.

3. The shallow lake water quality improvement system according to claim 1, characterized in that: The water collection network (3) includes a built-in water collection pipe (301) and an outer drainage blind pipe (302). The water collection pipe (301) is made of plastic and has small holes evenly distributed in it.

4. The shallow lake water quality improvement system according to claim 3, characterized in that: The drainage blind pipe is made of porous synthetic fiber material and is wrapped with geotextile (102).

5. A shallow lake water quality improvement system according to claim 3, characterized in that: The water collection pipes (301) are arranged in the gravel water collection layer (103) in a grid pattern, with a spacing of not less than 3000 mm, and the horizontal and vertical water collection pipes are interconnected.

6. The shallow lake water quality improvement system according to claim 1, characterized in that: The oxygenation device (5) is connected to the water pump via a three-way valve. The three-way valve is equipped with a switch control valve. The oxygenation device (5) and the water pump are connected to the power supply unit. The power supply unit is connected to the solar panel. The water pump and the oxygenation device (5) are both installed on the float.

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