A park water ecological purification system

Abstract

The present invention discloses a park water ecological purification system, comprising a circular river channel, wherein the bottom height of the river channel gradually decreases from the head end to the tail end, the head end and the tail end are separated by a dam, submerged plants are arranged at the bottom of the river channel, filter-feeding fish that live on algae are found in the river channel, a water conveying device is arranged between the head end and the tail end of the river channel, the water conveying device conveys the water flow at the tail end to the filter at the head end and then enters the head end, trees are planted around the river channel, and bird nests are arranged on the trees.

Description

Technical Field

[0001] The invention relates to a park water ecological purification system. Background Art

[0002] Nowadays, many city parks have artificial lakes and other water bodies. Most of these water bodies are unnatural artificial lakes. These water bodies are not connected to natural rivers, lakes, and reservoirs, so the self-purification ability of the water body is very important.

[0003] At present, the purification methods for this kind of closed water body are all biological treatment plus equipment assistance. Biological treatment mainly involves planting various aquatic plants and aquatic animals. The aquatic plants are mainly some phytoplankton, and the aquatic animals are mainly some filter-feeding fish. Equipment assistance mainly relies on water pumps to spray water into the air. In this solution, the oxygen produced by floating aquatic plants will not enter the water body, and the roots of floating plants will consume the oxygen in the water body. In addition, closed water bodies are prone to eutrophication and produce a large amount of algae. These algae will also consume a large amount of oxygen in the water body. Under the combined effect of the two, it is difficult for aquatic animals in the water body to survive. Although water pumps spray water to increase the contact area between the water body and the air and add more oxygen to the water, this is also a drop in the bucket and it is difficult to solve the problem.

[0004] A relatively easy solution is to plant some submerged plants in the water body. The oxygen produced by the submerged plants directly enters the water body. However, this type of submerged plants has very high requirements for the transparency of the water body. However, for eutrophic water bodies, it is difficult to meet the light transmittance requirements. Summary of the invention

[0005] In view of the deficiencies of the prior art, the present invention provides a park water ecological purification system, which can ensure sufficient dissolved oxygen in the water and ensure the ecological balance of the water body.

[0006] The technical solution adopted by the present invention to solve its technical problems is: a park water ecological purification system, including a circular river channel, from the head end to the end of the river channel, the bottom height of the river channel gradually decreases, the head end and the end are separated by a dam, the bottom of the river channel is provided with submerged plants, the river channel has filter-feeding fish that live on algae, a water conveying device is provided between the head end and the end of the river channel, the water conveying device conveys the water flow at the end to the filter at the head end and then enters the head end, trees are planted around the river channel, and bird nests are provided on the trees. In this way, the park's artificially excavated closed static water body can be converted into a flowing water body, which greatly increases the contact area between water and air on the one hand, and the flowing water surface can also increase the activity of fish in the water, which can also avoid too much algae in the water, causing turbidity of the water surface, thereby affecting the growth of submerged plants. When the water is clear, submerged plants can photosynthesize in the sun and produce oxygen that directly enters the water. At the same time, these submerged plants can also absorb the excrement produced by other aquatic animals and the residues of human food as nutrients, further reducing the risk of eutrophication of the water. Each time the water is filtered, the algae in the water can be directly removed to avoid the proliferation of algae, which will reduce the light transmittance of the water and cause the death of submerged plants. The use of attracting birds instead of carnivorous fish to control the number of filter-feeding fish is mainly to avoid the proliferation of carnivorous fish and the collapse of the fragile ecology of closed water bodies. At the same time, birds also transfer excess nutrients in the water to land in disguise.

[0007] In the above technical solution, preferably, the river channel has several gates that can be opened and closed. When the water transparency in the river channel meets the standard, the gate rises, and the waterwheel stops rotating. At this time, the water flow in each section of the river channel is stable and motionless. The gate is mainly set to prevent the water flow at the head end of the river channel from flowing to the end area, causing the river channel at the head end to dry up. When the water transparency in the river channel does not meet the standard, the gate drops, and the water flows from the head end to the end, and then is lifted to the head end by the waterwheel.

[0008] In the above technical solution, preferably, the filter includes a crushed stone layer, a gravel layer and a sand layer, and the water flows through the crushed stone layer, the gravel layer and the sand layer in sequence and then enters the head end. This is a filter that imitates the natural environment, does not affect the environment, and is not easy to clog.

[0009] In the above technical solution, preferably, the water delivery device is a waterwheel, which includes a frame, a rotating shaft and a bracket. The rotating shaft is fixed at a middle position of the frame, the rotating shaft is rotatably connected to the bracket, and several water storage barrels are arranged around the frame.

[0010] In the above technical solution, preferably, the opening of the water storage barrel is rotatably connected to the frame, magnets are arranged on both sides of the bottom of the water storage barrel, a groove is arranged on the dam, the front end of the water wheel extends into the groove, iron sheets are arranged on the two side walls of the groove, the iron sheets attract the magnets, and under the attraction of the iron sheets, when the water storage barrel reaches the top of the filter, its opening direction gradually changes from a vertical state to a horizontal state facing the filter, and when the water storage barrel passes through the filter and enters the water surface downward, its opening direction changes from a horizontal state facing the filter to an oblique downward direction facing the water surface. Since the top of the water storage barrel is rotatably connected, the water storage barrel will always be vertically downward when drawing water, so that when the water wheel rotates, the water in the water storage barrel will not overflow, energy is saved, and the water delivery efficiency is improved. When it reaches the filter, the water storage barrel is driven to turn by the attraction of the magnet, so that the opening faces the filter and the water in the water storage barrel is discharged. The water wheel continues to rotate, and the opening of the water storage barrel is changed to an oblique downward direction facing the water surface under the action of the magnet, which is convenient for the bucket to draw water.

[0011] In the above technical solution, preferably, it also includes a water quality transparency detection device, including a transmitting head and a receiving head, the transmitting head and the receiving head are both arranged below the water surface, the transmitting head emits light toward the receiving head, if the light received by the receiving head is less than the set value, it is judged that the water quality transparency does not meet the standard.

[0012] The beneficial effects of the present invention are as follows: this method can convert the closed static water body of the park, which is artificially excavated, into a flowing water body. On the one hand, the contact area between water and air is greatly increased. In addition, the flowing water surface can also increase the activity of fish in the water, so that too much algae in the water can be avoided, resulting in turbidity of the water surface, thereby affecting the growth of submerged plants. When the water body is clear, the oxygen produced by photosynthesis of submerged plants in the sun can directly enter the water body. At the same time, these submerged plants can also absorb the excrement produced by other aquatic animals and the residues of food fed by humans as nutrients, further reducing the risk of eutrophication of the water body. Each time the water body is filtered, the algae in the water can be directly removed, avoiding the flooding of algae, resulting in the reduction of the light transmittance of the water body, and causing the death of submerged plants. The number of filter-feeding fish is controlled by attracting birds instead of carnivorous fish, mainly to avoid the collapse of the fragile ecology of the closed water body caused by the flooding of carnivorous fish. At the same time, birds also transfer the excess nutrients in the water to the land in disguise, thereby completely avoiding the eutrophication of the water body. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0014] Figure 2 This is a three-dimensional schematic diagram of the waterwheel.

[0015] Figure 3 A side view of the waterwheel.

[0016] Figures 4 to 6 This is the operating principle diagram of a water storage bucket on a waterwheel.

[0017] Figure 7 Schematic diagram of a water transparency detection device. DETAILED DESCRIPTION

[0018] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments:

[0019] See also Figures 1 to 7 A park water ecological purification system includes a circular river channel 1. From the head end 11 to the end 12 of the river channel 1, the bottom height of the river channel 1 gradually decreases. The head end 11 and the end 12 are separated by a dam 2. The river channel 1 has several gates 13 that can be opened and closed.

[0020] Submerged plants 1a are arranged at the bottom of the river channel 1, and filter-feeding fish that live on algae are present in the river channel 1. A water supply device is arranged between the head end 11 and the tail end 12 of the river channel 1, and the water supply device transports the water flow at the tail end to the filter 4 at the head end and then enters the head end. Trees 3 are planted around the river channel 1, and bird nests 31 are arranged on the trees 3.

[0021] The filter 4 comprises a crushed stone layer 41, a gravel layer 42 and a sand layer 43, and the water flows into the head end after passing through the crushed stone layer, the gravel layer and the sand layer in sequence.

[0022] The water delivery device is a waterwheel 5, which includes a frame 51, a rotating shaft 52 and a bracket 53. The rotating shaft 52 is fixed at the middle position of the frame 51, and the rotating shaft 52 is rotatably connected to the bracket 53. A plurality of water storage barrels 54 are arranged around the frame 51.

[0023] See also Figures 4 to 6 The opening of the water storage barrel 54 is rotatably connected to the skeleton 51, magnets 541 are arranged on both sides of the bottom of the water storage barrel 54, a groove 21 is arranged on the dam 2, the front end of the water wheel 5 extends into the groove 21, and iron sheets 22 are arranged on the two side walls of the groove 21, and the iron sheets 22 attract the magnets 541. Under the attraction of the iron sheets 22, when the water storage barrel 54 reaches above the filter, its opening direction gradually changes from a vertical state to a horizontal state toward the filter 4, and when the water storage barrel 54 passes through the filter 4 and enters the water surface downward, its opening direction changes from a horizontal state toward the filter 4 to an oblique downward direction toward the water surface.

[0024] A platform 55 is disposed on one side of the bracket 53 , and a motor 6 is disposed on the platform 55 . The motor 6 drives the rotating shaft 52 to rotate via a belt 61 .

[0025] It also includes a water quality transparency detection device 7, including a transmitter head 71 and a receiver head 72, the transmitter head 71 and the receiver head 72 are both arranged below the water surface, and the transmitter head 71 emits light toward the receiver head 72.

[0026] The internal cycle of this system is as follows: nutrients in the water body produce algae, and fish in the water body consume algae to keep the water clear. The feces produced by the fish sink to the bottom of the river and become nutrients for submerged plants. Submerged plants photosynthesize and consume carbon dioxide from fish and other aquatic organisms to produce oxygen for fish to breathe. Then the fish are consumed by birds that feed on fish, and the feces produced by these birds are absorbed by trees and plants under the trees, which also promotes the growth of plants on both sides of the river.

[0027] When the water quality transparency detection device finds that the water quality transparency meets the requirements, the gates on the river channel are closed, the waterwheel no longer rotates, and the water flow in each section of the river channel is in a static state. The waterwheel lifts the water at the end of the river channel to above the head end and then drops it to the filter at the head end. The filter includes a gravel layer, a gravel layer and a sand layer. The water flows through the gravel layer, the gravel layer and the sand layer in sequence and then enters the head end of the river channel. Then, under the action of gravity, the water flows from the head end to the tail end. The water reaching the end is then transported to the head end by the waterwheel and circulated in sequence. When the water flows through the filter, the algae in the water can be filtered out, thereby increasing the transparency of the water body.

[0028] This method can transform the artificially excavated closed and static water body in the park into a flowing water body. On the one hand, it greatly increases the contact area between water and air. On the other hand, the flowing water surface can also increase the activity of fish in the water. This can also avoid too much algae in the water, causing turbidity on the water surface, thereby affecting the growth of submerged plants.

[0029] When the water is clear, submerged plants can photosynthesize in the sun and produce oxygen that directly enters the water. At the same time, these submerged plants can also absorb the excrement produced by other aquatic animals and the residues of human food as nutrients, further reducing the risk of eutrophication of the water. In addition, each time the water is filtered, algae in the water can be directly removed to avoid algae overflow, which will reduce the light transmittance of the water and cause the death of submerged plants.

[0030] The use of water wheels instead of water pumps to transport water is mainly to protect aquatic animals such as fish in the water. The water wheel has a slow rotation speed and does not have a high-speed impeller. It will not cause harm to aquatic animals during the water transportation process. At the same time, it can also be used as a landscape.

Claims

1. A park water ecological purification system, comprising a circular river channel, characterized in that: From the head end to the end of the river channel, the bottom height of the river channel gradually decreases, the head end and the end are separated by a dam, submerged plants are arranged at the bottom of the river channel, filter-feeding fish that live on algae are found in the river channel, a water delivery device is arranged between the head end and the end of the river channel, the water delivery device delivers the water flow at the end to the filter at the head end and then enters the head end, trees are planted around the river channel, bird nests are arranged on the trees, the water delivery device is a waterwheel, the waterwheel includes a frame, a rotating shaft and a bracket, the rotating shaft is fixed in the middle position of the frame, the rotating shaft is rotatably connected to the bracket, a number of water storage barrels are arranged around the frame, the openings of the water storage barrels are rotated Connected to the frame, magnets are arranged on both sides of the bottom of the water storage barrel, a groove is arranged on the dam, the front end of the water wheel extends into the groove, iron sheets are arranged on the two side walls of the groove, the iron sheets attract the magnets, and under the attraction of the iron sheets, when the water storage barrel reaches above the filter, its opening direction gradually changes from a vertical state to a horizontal state facing the filter, and when the water storage barrel passes through the filter and enters the water surface downward, its opening direction changes from a horizontal state facing the filter to an oblique downward direction facing the water surface, a platform is arranged on one side of the bracket, a motor is arranged on the platform, and the motor drives the rotating shaft to rotate through a belt drive.

2. The park water ecological purification system according to claim 1 is characterized by: There are several gates in the river channel that can be opened and closed.

3. The park water ecological purification system according to claim 1 is characterized by: The filter comprises a crushed stone layer, a gravel layer and a sand layer, and the water flows into the head end after passing through the crushed stone layer, the gravel layer and the sand layer in sequence.

4. The park water ecological purification system according to claim 1 is characterized by: It also includes a water quality transparency detection device, including a transmitter and a receiver, the transmitter and the receiver are both arranged below the water surface, and the transmitter emits light toward the receiver.

Images