A bionic micro-power self-cleaning water body filtering method based on filtering principle of river clam

Abstract

The present application belongs to the field of water treatment, and particularly relates to a biomimetic micro-power self-cleaning water filtering method based on the filtering principle of river mussels, which comprises the following steps: putting a floating body with a filtering device into a water body; water flows into the filtering device; a liquid supply device provides mucus to the filtering device, the mucus forms filamentous mucus in the filtering device, and the filamentous mucus captures fine suspended impurities in the water flow; the filamentous mucus in the filtering device is stripped; the stripped filamentous mucus is discharged from the filtering device and collected, and new filamentous mucus is formed in the filtering device to continue capturing fine suspended impurities; the method can continuously and efficiently capture fine impurities that are difficult to remove by a traditional filter screen, automatically collect the captured impurities, greatly improve the water quality and transparency of the water body, and realize the unification of efficient filtering and cleaning and sustainable operation.

Description

Technical Field

[0001] This invention belongs to the field of water treatment, specifically relating to a biomimetic micro-powered self-cleaning water filtration method based on the principle of freshwater mussels' filter feeding. Background Technology

[0002] Fine suspended impurities such as microparticles, algae, and organic debris in water bodies reduce water transparency, polluting the water and inhibiting the photosynthesis of submerged plants. Traditional filtration equipment can only screen and filter large particulate pollutants; or chemical agents can be directly added to the water. Although these can quickly flocculate and settle suspended impurities and temporarily improve water transparency, they also cause secondary pollution. Furthermore, the flocculated impurities will settle in the bottom sediment, causing sediment pollution and adversely affecting aquatic organisms. Summary of the Invention

[0003] To address the problems existing in the prior art, this invention provides a biomimetic micro-powered self-cleaning water filtration method based on the principle of freshwater mussels' filter feeding. This method can continuously and efficiently capture fine impurities that are difficult to remove with traditional filters, and automatically collect the captured impurities, thereby significantly improving water quality and transparency, and achieving a balance between efficient filtration and sustainable operation.

[0004] The specific technical solution adopted in this invention is as follows:

[0005] A biomimetic micro-dynamic self-cleaning water filtration method based on the principle of freshwater mussels' filter feeding includes the following steps:

[0006] S1. Deploy a floating body equipped with a filtration device into the water body;

[0007] S2. Water flows into the filtration equipment;

[0008] S3. The liquid supply device provides viscous liquid to the filtration device, where the viscous liquid forms filamentous viscous liquid, which captures fine suspended impurities in the water flow.

[0009] S4. Remove the filamentous mucus from the filtration equipment;

[0010] S5. The detached filamentous mucus is discharged from the filtration device and collected, and new filamentous mucus is formed in the filtration device to continue to capture fine suspended impurities.

[0011] The mucus includes a zwitterionic polymer hydrogel.

[0012] The filtration device includes a filter cylinder, a liquid outlet pipe, and a scraper. Multiple sets of liquid outlet pipes are provided, forming a water passage. The filter cylinder is located on the water inlet side of the filtration device. The liquid inlet end of the liquid outlet pipe passes through the filter cylinder and connects to a liquid supply device mounted on a float. A set of liquid outlet holes are provided on the pipe wall of the liquid outlet pipe. The filamentous viscous liquid is squeezed out through the liquid outlet holes and suspended in the water passage. The scraper is mounted on the filter cylinder and has the freedom to reciprocate in and out of the water passage. A dirt-blocking filter screen is provided on the water outlet side of the filter cylinder.

[0013] The outlet side is also connected to a sludge collection chamber. The lower end of the sludge collection chamber is connected to a collection tank outside the water body via a sewage pump. The sludge collection chamber is located below the filter cylinder and is Y-shaped with the filter cylinder. The lower end of the sludge collection chamber is inclined backward. The dirt-blocking filter screen has a mesh structure or a layered grid structure. The dirt-blocking filter screen is located between the outlet side and the sludge collection chamber. The lower end of the dirt-blocking filter screen is inclined backward.

[0014] The top of the filter cylinder has an inward protrusion, which is located above the water inlet of the sludge collection chamber.

[0015] The outlet pipe is a rectangular or oblong pipe, the water flow direction of the water passage is set along the water flow direction, and outlet holes are respectively provided on the left and right sides of the outlet pipe. The scrapers are respectively set on the left and right sides of the outlet pipe.

[0016] The scraper has a fan-shaped structure and is connected to the filter cylinder via a rotating shaft. The scraper is located behind the liquid outlet pipe and rotates inside the filter cylinder and reciprocates in and out of the water passage via the rotating shaft.

[0017] The water inlet side is provided with a water inlet filter screen, and the pore size of the water inlet filter screen is smaller than the gap between the liquid outlet pipes.

[0018] The liquid supply equipment includes a storage tank containing viscous liquid and a peristaltic pump, and the inlet end of the outlet pipe is connected to the storage tank via the peristaltic pump.

[0019] The beneficial effects of this invention are:

[0020] This invention continuously replenishes the outlet pipe with mucus through a liquid supply device, forming filamentous mucus on the outlet pipe without the need for disassembly and brushing. The entire filtration process simulates the process of freshwater mussels capturing impurities, agglomerating impurities to form "fake feces," and expelling "fake feces." Through the mucus, it captures impurities such as fine particles, algae, and organic debris that are difficult to remove by traditional filter screens, and automatically separates and collects the impurities, significantly improving water quality and transparency, and achieving efficient filtration and cleaning as well as sustainable operation.

[0021] The outlet pipe is replenished with viscous fluid periodically. Under pressure, the viscous fluid in the outlet pipe is squeezed out through the outlet hole, forming filamentous viscous fluid. One end of the filamentous viscous fluid is connected to the viscous fluid in the outlet pipe, while the other end swings with the water flow in the water passage to capture fine suspended impurities. After a preset time, the scraper scrapes off the filamentous viscous fluid in the water passage, causing some of the filamentous viscous fluid to separate from the outlet pipe and move with the water flow to the water outlet side of the filter cartridge.

[0022] Water flows through the filter screen and creates turbulence above the collection chamber. The filamentous mucus is intercepted by the filter screen and, under the influence of the turbulence, the intercepted filamentous mucus collides and agglomerates to form mucus clumps, simulating the formation process of "fake feces" of freshwater mussels. The mucus clumps slide down the inclined filter screen into the collection chamber. The sewage pump works to extract the mucus clumps from the filter cartridge and the collection chamber, completing the self-cleaning cycle of the filtration equipment. At the same time, it removes the captured impurities from the water body to prevent further pollution of the water body or bottom sediment. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the steps of the present invention;

[0024] Figure 2 This is a schematic diagram illustrating the application of filtration equipment;

[0025] Figure 3 Axonometric drawing of the filtration equipment;

[0026] Figure 4 This is a schematic diagram of the assembly of the liquid outlet pipe and the scraper;

[0027] Figure 5 A schematic diagram showing the process of a scraper peeling off filamentous mucus;

[0028] Figure 6 This is a schematic diagram of the assembly of the dirt-blocking filter screen and filter cartridge in Example 2;

[0029] In the attached diagram, 1 is the float, 2 is the filter cylinder, 201 is the inlet side, 202 is the outlet side, 203 is the protrusion, 3 is the liquid outlet pipe, 301 is the liquid outlet hole, 4 is the scraper, 5 is the dirt-blocking filter screen, 6 is the dirt collection chamber, 7 is the collection tank, 8 is the inlet filter screen, 9 is the storage tank, and 10 is the peristaltic pump. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0031] Example 1, such as Figure 1 As shown, a biomimetic micro-powered self-cleaning water filtration method based on the principle of freshwater mussels' filter feeding includes the following steps:

[0032] S1. A float 1 equipped with a filtration device is placed into the water body. The filtration device floats on the water surface with the help of the float 1 and can automatically rise and fall with changes in water level. The float 1 is a ring-shaped, plate-shaped, or boat-shaped structure.

[0033] S2. Water flows into the filtration equipment under the dynamic action of natural water flow;

[0034] S3. The liquid supply device provides viscous liquid to the filtration device. The viscous liquid forms filamentous viscous liquid in the filtration device. The filamentous viscous liquid oscillates under the action of water flow, simulating the gill filaments of a freshwater mussel. The filamentous viscous liquid captures fine suspended impurities in the water flow that are difficult to be removed by traditional filter screens.

[0035] S4. Periodically remove the filamentous mucus from the filter equipment. The removed filamentous mucus continues to flow with the water, realizing the process of the freshwater mussel's gill filaments transporting mucus to the labia.

[0036] S5. The detached filamentous mucus is periodically discharged from the filtration device and collected, simulating the discharge process of the freshwater mussel's "fake feces". The liquid supply device continues to supply mucus to the filtration device, and new filamentous mucus is formed in the filtration device to continue to capture fine suspended impurities.

[0037] The mucus comprises a zwitterionic polymer hydrogel, which can adsorb silt, organic debris, bacteria, and most algae in the water. Simultaneously, the cross-linked porous network structure of this hydrogel can physically entangle and capture suspended particles in the water, similar to the mechanism of the gill filaments of freshwater mussels. This hydrogel itself is non-toxic and insoluble in water, posing no harm to the water body or aquatic organisms and preventing secondary pollution. Compared to sulfated polysaccharide hydrogels with a single charge, it overcomes the limitation of "only adsorbing pollutants with opposite charges," simultaneously capturing positively charged, negatively charged, and neutral particles and solutes in the water. It is currently the artificial material closest to the dynamic sorting ability of freshwater mussel pseudofeces.

[0038] like Figure 2 , Figure 3As shown, the filtration device includes a filter cylinder 2, an outlet pipe 3, and a scraper 4. Multiple sets of outlet pipes 3 are provided, and a water passage is formed between the outlet pipes 3 and between the outlet pipes 3 and the left and right side walls of the filter cylinder 2. The filter cylinder 2 is located on the water inlet side 201 of the filtration device. The inlet end of the outlet pipe 3 passes through the filter cylinder 2 and is connected to the liquid supply device, which is set on the float 1. A set of outlet holes 301 are provided on the pipe wall of the outlet pipe 3. The filamentous viscous liquid is suspended in the water passage through the outlet holes 301. The scraper 4 is set on the filter cylinder 2 and has the freedom to reciprocate in and out of the water passage. A dirt-blocking filter screen 5 is provided on the water outlet side 202 of the filter cylinder 2. The liquid supply equipment includes a storage tank 9 containing viscous liquid and a peristaltic pump 10. The inlet end of the outlet pipe 3 is connected to the storage tank 9 via the peristaltic pump 10. The peristaltic pump 10 periodically replenishes the viscous liquid in the storage tank 9 into the outlet pipe 3. Under pressure, the viscous liquid in the outlet pipe 3 is squeezed out through the outlet hole 301 to form filamentous viscous liquid. One end of the filamentous viscous liquid is connected to the viscous liquid in the outlet pipe 3, and the other end swings with the water flow in the water passage to capture fine suspended impurities. After a preset time is reached, the scraper 4 scrapes off the filamentous viscous liquid that extends out of the side wall of the outlet pipe 3, so that some of the filamentous viscous liquid is separated from the outlet pipe 3 and moves with the water flow to the outlet side 202 of the filter cartridge 2.

[0039] The outlet side 202 is also connected to a dirt collection chamber 6. The lower end of the dirt collection chamber 6 is connected to a collection tank 7 outside the water body via a sewage pump. The dirt collection chamber 6 is located below the filter cylinder 2 and cooperates with the filter cylinder 2 in a Y-shaped structure. The lower end of the dirt collection chamber 6 is inclined backward. The dirt-blocking filter screen 5 has a mesh structure or a layered grid structure. The dirt-blocking filter screen 5 is located between the outlet side 202 and the dirt collection chamber 6. The lower end of the dirt-blocking filter screen 5 is inclined backward. In this embodiment, the dirt-blocking filter screen 5 is a mesh structure. The dirt-blocking filter screen 5 can be a mesh sheet or a filter screen cylinder. In this embodiment, the dirt-blocking filter screen 5 is preferably a filter screen cylinder. The dirt-blocking filter screen 5 is fitted inside the dirt collection chamber 6. The upper end of the dirt-blocking filter screen 5 abuts against the inner wall of the filter cylinder 2. At this time, a protrusion 203 is provided inward on the top of the filter cylinder 2. The protrusion 203 is located in the dirt collection chamber 6. Above the inlet of the sludge chamber 6, the protrusion 203 forcibly changes the direction of water flow, forcing the water to pass through the filter screen 5 and creating turbulence above the sludge collection chamber 6. The filamentous mucus is intercepted by the filter screen 5, while the clean water flows through the filter screen 5 and is discharged into the water body from the outlet side 202. The filamentous mucus intercepted by the filter screen 5 collides and agglomerates under the action of turbulence, forming mucus clumps, simulating the formation process of "fake feces" of freshwater mussels. The mucus clumps slide down into the sludge collection chamber 6 with the inclined filter screen 5. After the preset collection time is reached, the sewage pump works to extract the mucus clumps from the filter cylinder 2 and the sludge collection chamber 6. The mucus clumps are collected into the collection tank 7, completing the self-cleaning cycle of the filtration equipment. At the same time, the captured impurities are removed from the water body to prevent further pollution of the water body or bottom sediment.

[0040] The outlet pipe 3 is a rectangular or oblong pipe. In this embodiment, the outlet pipe 3 is an oblong pipe. Both the front and rear ends of the outlet pipe 3 are arc-shaped structures, which facilitates the diversion of water flow and allows the water flow to pass smoothly through the water passage. This reduces water flow resistance while ensuring that the filamentous mucus can be evenly distributed and fully contact the water flow. The water flow direction of the water passage is set along the water flow direction. The outlet pipe 3 has outlet holes 301 on the left and right sides respectively. The scraper 4 is set on the left and right sides of the outlet pipe 3 respectively. The width of the scraper 4 is equal to the width of the water passage. When the scraper 4 peels off the filamentous mucus, the scraper 4 gradually enters the water passage and blocks the water passage. When the sewage pump extracts the mucus clump, due to the blockage of the water passage by the scraper 4, the water can only enter the filter cylinder 2 from the outlet side 202. The reverse flow of the water cleans the filter screen 5 in the reverse direction, washing away the filamentous mucus hooked on the filter screen 5 and preventing the filter screen 5 from being blocked by the filamentous mucus.

[0041] On the other hand, when the scraper 4 is located outside the water passage, the scraper 4 is set with a gap between it and the water passage. The scraper 4 intercepts and forces the water discharged from the water passage to change direction, slowing down the water flow speed. This helps to increase the contact time between the water and the filamentous mucus, so that the filamentous mucus can fully capture the fine suspended impurities in the water.

[0042] like Figure 4 As shown, the scraper 4 has a fan-shaped structure. The scraper 4 is connected to the filter cylinder 2 via a rotating shaft. The scraper 4 is located behind the liquid outlet pipe 3. The scraper 4 rotates inside the filter cylinder 2 and reciprocates in and out of the water passage via the rotating shaft. The scraper 4 is hinged to the filter cylinder 2 via the same rotating shaft, and the rotating shaft is connected to a motor drive. The motor periodically drives the rotating shaft to rotate, as shown... Figure 5 As shown, scraper 4 rotates with the shaft and enters the water passage to cut and peel off the filamentous mucus. Scraper 4 continues to rotate with the shaft to reset, maintaining the flow rate of the water passage.

[0043] In this embodiment, the filter cylinder 2 includes a rectangular section and a cylindrical section arranged sequentially along the water flow direction. The cylindrical section is connected to the rectangular section by means of a funnel-shaped structure. The water inlet 201, the liquid outlet pipe 3, and the scraper 4 are all located on the rectangular section, while the dirt-blocking filter screen 5, the dirt collection chamber 6, and the water outlet 203 are located on the cylindrical section. The layout inside the filter cylinder 2 is reasonable, ensuring sufficient filtration area and ensuring that the scraper 4 can fully cut the filamentous mucus. The funnel-shaped structure guides the water flow to transition smoothly, reduces water flow turbulence, and prevents mucus from escaping from the dirt-blocking filter screen 5 with the water flow.

[0044] The water inlet side 201 is equipped with a water inlet filter screen 8. The pore size of the water inlet filter screen 8 is smaller than the gap between the liquid outlet pipes 3, that is, the width of the water passage. The water inlet filter screen 8 filters the water flowing towards the filter cylinder 2, intercepting large particles of impurities in the water flow and preventing large particles of impurities from clogging the water passage.

[0045] This invention continuously replenishes the outlet pipe 3 with mucus through a liquid supply device, forming filamentous mucus on the outlet pipe 3 without disassembling and brushing. The entire filtration process simulates the process of freshwater mussels capturing impurities, agglomerating impurities to form "fake feces," and expelling "fake feces." Through the mucus, it captures impurities such as fine particles, algae, and organic debris that are difficult to remove by traditional filter screens, and automatically separates and collects the captured impurities, greatly improving the water quality and transparency, and achieving a balance between efficient filtration and sustainable operation.

[0046] Example 2, as Figure 6 As shown, it is basically the same as in Example 1, except that the filter screen 5 is a layered grid structure. After the water flows through the gaps between the grids of the filter screen 5, it flows out of the filter cylinder 2. When the water flows through the filter screen 5, the flow direction is forcibly changed under the action of the grid, generating slight turbulence. At the same time, the grid blocks the filamentous mucus in the water flow. The filamentous mucus slides down the grid and stays in the filter cylinder 2 or falls into the dirt collection chamber 6 to be extracted and collected.

Claims

1. A biomimetic micro-powered self-cleaning water filtration method based on the principle of freshwater mussel filter feeding, characterized in that, Includes the following steps: S1. Deploy a floating body equipped with a filter into the water body (1). S2. Water flows into the filtration equipment; S3. The liquid supply device provides viscous liquid to the filtration device, where the viscous liquid forms filamentous viscous liquid, which captures fine suspended impurities in the water flow. S4. Remove the filamentous mucus from the filtration equipment; S5. The detached filamentous mucus is discharged from the filtration device and collected, and new filamentous mucus is formed in the filtration device to continue to capture fine suspended impurities.

2. The biomimetic micro-dynamic self-cleaning water filtration method based on the principle of freshwater mussel filtration as described in claim 1, characterized in that: The mucus includes a zwitterionic polymer hydrogel.

3. The biomimetic micro-dynamic self-cleaning water filtration method based on the principle of freshwater mussel filter feeding, as described in claim 1, is characterized in that: The filtration device includes a filter cylinder (2), an outlet pipe (3), and a scraper (4). The outlet pipe (3) is provided in multiple sets, and a water passage is formed between the outlet pipes (3). The filter cylinder (2) is located on the water inlet side (201) of the filtration device. The inlet end of the outlet pipe (3) passes through the filter cylinder (2) and is connected to the liquid supply device. The liquid supply device is set on the float (1). A set of outlet holes (301) is provided on the pipe wall of the outlet pipe (3). The filamentous viscous liquid is squeezed out by means of the outlet holes (301) and suspended in the water passage. The scraper (4) is set on the filter cylinder (2) and has the freedom to reciprocate in and out of the water passage. A dirt-blocking filter screen (5) is provided on the water outlet side (202) of the filter cylinder (2).

4. The biomimetic micro-dynamic self-cleaning water filtration method based on the principle of freshwater mussel filtration as described in claim 3, characterized in that: The outlet side (202) is also connected to a dirt collection chamber (6). The lower end of the dirt collection chamber (6) is connected to a collection tank (7) outside the water body via a sewage pump. The dirt collection chamber (6) is located below the filter cylinder (2) and is Y-shaped with the filter cylinder (2). The lower end of the dirt collection chamber (6) is tilted backward. The dirt-blocking filter screen (5) is a mesh structure or a layered grid structure. The dirt-blocking filter screen (5) is located between the outlet side (202) and the dirt collection chamber (6). The lower end of the dirt-blocking filter screen (5) is tilted backward.

5. A biomimetic micro-dynamic self-cleaning water filtration method based on the principle of freshwater mussel filter feeding, as described in claim 4, is characterized in that: The top of the filter cylinder (2) is provided with a protrusion (203) facing inward, and the protrusion (203) is located above the water inlet of the dirt collection chamber (6).

6. The biomimetic micro-dynamic self-cleaning water filtration method based on the principle of freshwater mussel filter feeding, as described in claim 3, is characterized in that: The liquid outlet pipe (3) is a rectangular pipe or an oblong pipe. The water flow direction of the water passage is set along the water flow direction. Liquid outlet holes (301) are respectively set on the left and right sides of the liquid outlet pipe (3). The scraper (4) is respectively set on the left and right sides of the liquid outlet pipe (3).

7. The biomimetic micro-dynamic self-cleaning water filtration method based on the principle of freshwater mussel filter feeding, as described in claim 3, is characterized in that: The scraper (4) has a fan-shaped structure. The scraper (4) is connected to the filter cylinder (2) by means of a rotating shaft. The scraper (4) is located behind the liquid outlet pipe (3). The scraper (4) rotates in the filter cylinder (2) and reciprocates in and out of the water passage by means of the rotating shaft.

8. The biomimetic micro-dynamic self-cleaning water filtration method based on the principle of freshwater mussel filter feeding, as described in claim 3, is characterized in that: The water inlet side (201) is provided with a water inlet filter (8), and the pore size of the water inlet filter (8) is smaller than the gap between the liquid outlet pipes (3).

9. A biomimetic micro-dynamic self-cleaning water filtration method based on the principle of freshwater mussel filter feeding, as described in claim 3, is characterized in that: The liquid supply device includes a storage tank (9) containing viscous liquid and a peristaltic pump (10). The inlet end of the outlet pipe (3) is connected to the storage tank (9) via the peristaltic pump (10).

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