An integrated electrocoagulation rotary drum filter for removing particulate matter from aquaculture water

Abstract

This application discloses an integrated electrocoagulation and rotary drum filtration aquaculture water particulate matter removal device, including a housing, an inlet pipe, an electrocoagulation unit, a rotary drum filtration unit, and a cleaning unit. The housing has vertical and U-shaped partitions dividing the internal space into an electrocoagulation space, a filtration space, and a collection space. The electrocoagulation unit includes multiple anode plates and multiple cathode plates, which are alternately distributed. This removal device effectively coordinates the electrocoagulation unit and the rotary drum filtration unit, significantly improving water treatment efficiency. It effectively treats floating flocs, sinking sludge, and filter residue at the rotating drum, thereby reducing the need for manual intervention. It effectively cleans flocs entangled in the collection branch pipe, ensuring long-term stable operation of the entire device.

Description

Technical Field

[0001] This invention relates to the technical field of water particulate matter removal devices, and more specifically, to an integrated electrocoagulation rotary drum filter aquaculture water particulate matter removal device. Background Technology

[0002] In recent years, with the rapid development of aquaculture towards intensification and large-scale operations, the stocking density has been continuously increasing, leading to a significant increase in impurities (including organic debris, colloidal substances, and some soluble organic matter) in the water, formed by uneaten feed, fish metabolites, and suspended particulate matter. These impurities not only reduce water transparency and affect the growth of aquatic organisms, but also easily decompose and consume dissolved oxygen, breed harmful microorganisms, and cause water quality deterioration, seriously restricting aquaculture efficiency and ecological security.

[0003] In the field of water treatment technology, electrocoagulation and rotary filter drums are both effective treatment methods. The basic principle of electrocoagulation is to pass a direct current through a metal electrode (usually iron or aluminum), and the anode metal produces metal cations (such as Fe) through electrolysis. 2+ Al 3+ These ions hydrolyze and polymerize in water to form a series of polynuclear hydroxyl complexes and hydroxides, such as ferric hydroxide and aluminum hydroxide. These products have high adsorption activity and can destabilize and aggregate colloidal particles, suspended solids, some dissolved organic matter, and phosphates in the water through charge neutralization, adsorption bridging, and netting and sweeping, forming visible flocs. Depending on their density, bubble adhesion, and water flow conditions, some of the flocs will float to the surface with tiny electrolytic bubbles to form scum, while others will sink due to their higher density to form sediment. The core component of a rotary drum filter (also known as a rotary drum filter or roller filter) is a slowly rotating cylindrical screen filter drum. As the drum rotates continuously, filter residue adheres to the screen and is removed by backwashing water spray or a scraper, thus achieving continuous or intermittent self-cleaning of the filter screen.

[0004] Currently, in practical applications of aquaculture water treatment, electrocoagulation technology and rotary drum filtration technology are mostly used as independent treatment units or simply combined in series, resulting in poor synergy between the two. Furthermore, the electrocoagulation process simultaneously generates floating flocs (scum) and settling scum. After a period of use, both the floating flocs and settling scum require processing, resulting in a relatively high degree of manual intervention. This makes the operation and maintenance of the entire water treatment system inconvenient, and its continuity, automation, and space efficiency all need improvement. Summary of the Invention

[0005] This invention aims to overcome the shortcomings of existing technologies and provide an integrated electrocoagulation drum filter device for removing particulate matter from aquaculture water.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a water particulate matter removal device, comprising a housing, an inlet pipe, an electrocoagulation unit, a rotary drum filter unit, and a cleaning unit; the housing has vertical partitions and U-shaped partitions dividing the internal space into an electrocoagulation space, a filtration space, and a collection space; the electrocoagulation unit includes multiple anode plates and multiple cathode plates, which are alternately distributed; the rotary drum filter unit includes a rotating filter drum, a filter drum drive unit for driving the rotating filter drum, an outlet pipe extending into the rotating filter drum, an outlet pipe valve installed on the outlet pipe, and a scraper capable of scraping material from the outer surface of the rotating filter drum, one end of the scraper being located at the top of the collection space; the vertical partitions and the U-shaped partitions are connected... The system includes a channel plate with a connecting channel that is closed at one end and open at the other. The channel plate is connected to a main collection pipe via two connecting pipes, and the main collection pipe is connected to multiple collection branch pipes with liquid inlet holes. The housing is equipped with a first gate plate and a first gate plate drive unit capable of closing the open end of the channel plate. The bottom end of the vertical partition has a slag discharge hole, and the housing is equipped with a second gate plate and a second gate plate drive unit capable of closing the slag discharge hole. The vertical partition has a strip-shaped through hole, and the housing is equipped with a third gate plate and a third gate plate drive unit capable of closing the strip-shaped through hole. The cleaning unit includes a cleaning frame and a cleaning frame translation drive unit. The cleaning frame includes a translation frame and multiple scraping rings through which the collection branch pipes pass.

[0007] Furthermore, the first gate driving unit is used to drive the first gate; the second gate driving unit is used to drive the second gate; and the third gate driving unit is used to drive the third gate.

[0008] Furthermore, a first water pump is installed at the water inlet pipe.

[0009] Furthermore, a second water pump is installed at the outlet pipe.

[0010] This allows for the control of water inlet and outlet, with the first pump controlling the inlet speed and the second pump controlling the outlet speed.

[0011] Furthermore, the collecting branch pipe is a cylindrical pipe closed at one end; the translation frame includes a strip seat and a plurality of connecting plates connecting the strip seat and the scraping ring.

[0012] Furthermore, the strip seat is also connected to a translation plate via an L-shaped rod.

[0013] Furthermore, the L-shaped rod has two.

[0014] Furthermore, the translation plate is a rectangular plate, and the bottom end of the translation plate is 5-10mm lower than the top end of the vertical partition.

[0015] When the floating flocs are discharged, the translation plate moves horizontally, which can push the flocs more smoothly towards the vertical partition.

[0016] Furthermore, the cleaning rack translation drive unit includes a strip plate fixed to the box body, a drive motor installed on the box body, a lead screw bearing installed on the strip plate, a lead screw connected to the lead screw bearing and driven by the drive motor, and a guide rod connected between the box body and the strip plate. The strip plate seat has a threaded hole that mates with the lead screw and a guide hole that mates with the guide rod.

[0017] Furthermore, the guide rod has two rods.

[0018] Furthermore, the number of collection branches is greater than or equal to 5.

[0019] Furthermore, the strip plate is located above the vertical partition.

[0020] Furthermore, the strip-shaped through hole is located above the channel plate, and the end of the collecting branch pipe near the vertical partition is less than 2cm away from the vertical partition.

[0021] Furthermore, the number of scraping rings and collecting branch pipes are equal and correspond one-to-one, with each scraping ring being passed through a collecting branch pipe.

[0022] Furthermore, the inner diameter of the scraping ring is greater than or equal to the outer diameter of the collecting branch pipe, and the difference between the two is less than 1 mm.

[0023] Furthermore, the water inlet pipe is connected to a water distribution pipe, which is perpendicular to the water inlet pipe and has multiple liquid outlet holes.

[0024] This allows the water to flow more evenly through the electrocoagulation unit.

[0025] Furthermore, an inlet valve is installed at the inlet pipe, and the inlet pipe is connected to the electrocoagulation space.

[0026] Furthermore, multiple collection branches are arranged in parallel rows with equal spacing and at the same horizontal level.

[0027] Furthermore, the height of the collecting branch pipe is higher than the height of the electrocoagulation unit; the ends of the multiple collecting branch pipes all face the strip-shaped through hole.

[0028] This makes it easier for the flocs scraped off from the collection branch pipe to flow away through the strip-shaped through-hole.

[0029] Furthermore, the scraper has baffles on both sides, and the scraper is installed in the housing via an elastic reset hinge device, with one end of the scraper abutting against the rotating filter drum.

[0030] Furthermore, the end of the scraper that abuts against the rotating filter drum is higher than the end that is farther away from the rotating filter drum.

[0031] Furthermore, the top of the channel plate is arc-shaped, with lower sides and a higher middle.

[0032] This prevents the flocs from remaining at the top of the channel plate, allowing them to slide down the curved surface from both sides.

[0033] Furthermore, the housing includes a bottom plate, a first end plate, a second end plate, and two side plates. The first end plate, the vertical partition, and the second end plate are parallel to each other. The bottom plate includes an inclined plate and a horizontal plate fixedly connected to the inclined plate. A filter plate is fixed at the bottom plate to divide the collection space into a filter residue space and a filtrate space.

[0034] The inclined plate makes it easier to flush away sediment.

[0035] Furthermore, a maintenance door is installed at the second end plate.

[0036] This makes it easier to clean and maintain the filter plates.

[0037] Furthermore, a drain pipe connecting the filtrate space and the water outlet pipe is installed in the housing, and a drain pipe valve is installed in the drain pipe.

[0038] Furthermore, the water inlet pipe is installed at the first end plate.

[0039] Furthermore, the filter plate is fixedly connected to the second end plate and the two side plates.

[0040] Furthermore, both ends of the first gate are fixed with a first rotating shaft extending out of the housing. There are two first gate drive units. The first gate drive unit includes a first hinge seat, a first electric push rod installed on the first hinge seat, and a first rotating arm hinged to the first electric push rod. The first rotating arm is fixedly connected to the first rotating shaft.

[0041] Furthermore, both ends of the second gate are fixed with a second rotating shaft extending out of the housing. There are two second gate drive units. The second gate drive unit includes a second hinge seat, a second electric push rod installed on the second hinge seat, and a second rotating arm hinged to the second electric push rod. The second rotating arm is fixedly connected to the second rotating shaft.

[0042] Furthermore, both ends of the third gate are fixed with a third rotating shaft extending out of the housing. There are two third gate drive units. The third gate drive unit includes a third hinge seat, a third electric push rod installed on the third hinge seat, and a third rotating arm hinged to the third electric push rod. The third rotating arm is fixedly connected to the third rotating shaft.

[0043] Furthermore, a bearing and a shaft seal are installed at the first rotating shaft; a bearing and a shaft seal are installed at the second rotating shaft.

[0044] Furthermore, the rotating filter drum includes a circumferential plate with filter holes, two end ring plates, and two rotating tubes respectively fixedly connected to the two end ring plates. A mounting bearing is installed between the rotating tubes and the housing. The water outlet pipe is an L-shaped pipe and passes through one of the rotating tubes.

[0045] Furthermore, the L-shaped tube is fixedly connected to the housing via a fixed bracket.

[0046] Furthermore, the filter drum drive unit includes a sprocket motor, a driving sprocket mounted on the sprocket motor, a driven sprocket mounted on one of the rotating tubes, and a transmission chain mounted between the driving sprocket and the driven sprocket.

[0047] Furthermore, the removal device is capable of performing particulate matter removal, floating floc discharge, sinking sludge discharge, and collection branch pipe cleaning operations. During the particulate matter removal operation, the first gate is open, and the second and third gates are closed, resulting in the liquid level in the electrocoagulation space being lower than the top of the vertical partition. During the floating floc discharge operation, the first, second, and third gates are closed, resulting in the liquid level in the electrocoagulation space being higher than the top of the vertical partition. During the sinking sludge discharge operation, the first and third gates are closed, and the second gate is open, resulting in the liquid level in the electrocoagulation space being lower than the top of the vertical partition. During the collection branch pipe cleaning operation, the first and second gates are closed, and the third gate is open, resulting in the liquid level in the electrocoagulation space being higher than the bottom of the strip-shaped through-hole and lower than the top of the strip-shaped through-hole, and the cleaning frame moves horizontally along the direction of the collection branch pipe.

[0048] Furthermore, the removal device is capable of performing a filtrate extraction operation, in which both the inlet pipe valve and the outlet pipe valve are closed, the drain pipe valve is opened, and the filtrate in the filtrate space is extracted from the outlet pipe.

[0049] Furthermore, the drain valve is located between the end of the outlet pipe that extends into the rotating filter drum and the connection point between the drain pipe and the outlet pipe.

[0050] Beneficial effects:

[0051] 1. The removal device of this application can effectively coordinate the electrocoagulation unit and the drum filter unit, significantly improving water treatment efficiency.

[0052] 2. The removal device of this application can effectively handle floating flocs, sinking sludge, and filter residue at the rotating filter drum, thereby reducing the degree of manual intervention and significantly improving the continuity and automation of the entire removal device.

[0053] 3. The removal device of this application can effectively clean the lint entangled at the collection branch pipe, thereby ensuring the stable operation of the entire device for a long time. Attached Figure Description

[0054] Figure 1 This is a schematic diagram of a particulate matter removal device;

[0055] Figure 2 This is a magnified view of region A;

[0056] Figure 3 This is a schematic diagram illustrating the particulate matter removal process.

[0057] Figure 4 This is a magnified view of region B.

[0058] Figure 5 This is a magnified view of region C;

[0059] Figure 6 This is a magnified view of region D;

[0060] Figure 7 This is a magnified view of region E.

[0061] Figure 8 This is a schematic diagram illustrating the process of discharging floating flocs.

[0062] Figure 9 This is a magnified view of region F;

[0063] Figure 10 This is a magnified view of region G;

[0064] Figure 11 This is a schematic diagram illustrating the process of discharging sediment during sedimentation.

[0065] Figure 12 This is a magnified view of region H;

[0066] Figure 13 This is a magnified view of region I;

[0067] Figure 14 This is a schematic diagram illustrating the process of cleaning the collection branch pipe.

[0068] Figure 15 This is a magnified view of region J.

[0069] To make it clear, Figure 1-14 In the middle, a portion of one of the side panels has been cut off, thus revealing the internal structure of the box.

[0070] Explanation of reference numerals in the attached drawings: Box body 1; bottom plate 1.1; first end plate 1.2; second end plate 1.3; side plate 1.4; filter plate 1.5; maintenance door 1.6; water inlet pipe 2; water distribution pipe 2.1; liquid outlet hole 2.2; water inlet pipe valve 2.3; electrocoagulation unit 3; vertical partition 4; slag discharge through hole 4.1; strip-shaped through hole 4.2; U-shaped partition 5; rotating filter drum 6; circumferential plate 6.1; filter hole 6.2; end ring plate 6.3; rotating pipe 6.4; mounting bearing 6.4.1; water outlet pipe 7; water outlet pipe valve 7.1; fixed bracket 7.2; scraper 8; baffle 8.1; channel plate 9; connecting pipe 9.1; main collection pipe 10; branch collection pipe 10.1; first gate 11; first rotating shaft 11.1; First hinge seat 11.2; First electric push rod 11.3; First rotating arm 11.4; Second gate 12; Second hinge seat 12.1; Second electric push rod 12.2; Second rotating arm 12.3; Third gate 13; Third rotating shaft 13.1; Third hinge seat 13.2; Third electric push rod 13.3; Third rotating arm 13.4; Scraping ring 14.1; Strip seat 14.2; Connecting plate 14.3; L-shaped rod 14.4; Translation plate 14.5; Strip plate 15.1; Drive motor 15.2; Lead screw 15.3; Guide rod 15.4; Drain pipe 16; Drain pipe valve 16.1; Sprocket motor 17.1; Drive sprocket 17.2; Driven sprocket 17.3; Transmission chain 17.4. Detailed Implementation

[0071] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0072] This invention provides an integrated aquaculture water particulate matter removal device with electrocoagulation rotary drum filtration, as shown in the figure. It includes a housing 1, an inlet pipe 2, an electrocoagulation unit 3, a rotary drum filtration unit, and a cleaning unit. The housing 1 has vertical partitions 4 and U-shaped partitions 5 dividing the interior space into an electrocoagulation space, a filtration space, and a collection space. The electrocoagulation unit 3 includes multiple anode plates and multiple cathode plates, which are alternately distributed. The rotary drum filtration unit includes a rotating filter drum 6, a filter drum drive unit for driving the rotating filter drum 6, an outlet pipe 7 extending into the rotating filter drum 6, an outlet pipe valve 7.1 installed on the outlet pipe 7, and a scraper 8 capable of scraping material from the outer surface of the rotating filter drum 6, with one end of the scraper 8 located at the top of the collection space. A channel plate 9 connects the vertical partition 4 and the U-shaped partition 5. The plate 9 has a connecting channel that is closed at one end and open at the other end. The channel plate 9 is connected to a main collection pipe 10 through two connecting pipes 9.1. The main collection pipe 10 is connected to multiple collection branch pipes 10.1 with liquid inlet holes. The box body 1 is equipped with a first gate 11 that can close the open end of the channel plate 9 and a first gate drive unit. The bottom end of the vertical partition 4 has a slag discharge hole 4.1. The box body 1 is equipped with a second gate 12 that can close the slag discharge hole 4.1 and a second gate drive unit. The vertical partition 4 has a strip-shaped through hole 4.2. The box body 1 is equipped with a third gate 13 that can close the strip-shaped through hole 4.2 and a third gate drive unit. The cleaning unit includes a cleaning frame and a cleaning frame translation drive unit. The cleaning frame includes a translation frame and multiple scraping rings 14.1 that are passed through by the collection branch pipes 10.1. The collection branch pipe 10.1 is a cylindrical pipe closed at one end; the translation frame includes a strip seat 14.2 and a plurality of connecting plates 14.3 connecting the strip seat 14.2 and the scraping ring 14.1; the strip seat 14.2 is also connected to a translation plate 14.5 via an L-shaped rod 14.4; the cleaning frame translation drive unit includes a strip plate 15.1 fixed to the housing 1, a drive motor 15.2 installed at the housing 1, a lead screw bearing installed at the strip plate 15.1, a lead screw 15.3 connected to the lead screw bearing and driven by the drive motor 15.2, and a guide rod 15.4 connected between the housing 1 and the strip plate 15.1. The strip seat 14.2 has a threaded hole that mates with the lead screw 15.3 and a guide hole that mates with the guide rod 15.4.

[0073] The strip-shaped through hole 4.2 is located above the channel plate 9. The end of the collecting branch pipe 10.1 near the vertical partition 4 is less than 2 cm away from the vertical partition 4. The number of scraping rings 14.1 and collecting branch pipes 10.1 are equal and correspond one-to-one. Each scraping ring 14.1 is passed through by one collecting branch pipe 10.1. The inner diameter of the scraping ring 14.1 is greater than or equal to the outer diameter of the collecting branch pipe 10.1, and the difference between the two is less than 1 mm. The inlet pipe 2 is connected to a distribution pipe 2.1, which is perpendicular to the inlet pipe 2. The distribution pipe 2.1 has multiple outlet holes 2.2. An inlet pipe valve 2.3 is installed at the inlet pipe 2, which is connected to the electrocoagulation space. Multiple collection branch pipes 10.1 are parallel to each other, evenly spaced, and located at the same horizontal height. The height of the collection branch pipes 10.1 is higher than the height of the electrocoagulation unit 3. The ends of the multiple collection branch pipes 10.1 all face the strip-shaped through hole 4.2. The scraper 8 has baffles 8.1 on both sides. The scraper 8 is installed at the housing 1 through an elastic reset hinge device, and one end of the scraper 8 abuts against the rotating filter drum 6. The top of the channel plate 9 is arc-shaped, with lower sides and a higher middle. The housing 1 includes a bottom plate 1.1, a first end plate 1.2, a second end plate 1.3, and two side plates 1.4. The first end plate 1.2, the vertical partition 4, and the second end plate 1.3 are parallel to each other. The bottom plate 1.1 includes an inclined plate and a horizontal plate fixedly connected to the inclined plate. A filter plate 1.5 is fixed at the bottom plate 1.1 to divide the collection space into a filter residue space and a filtrate space. A maintenance door 1.6 is installed at the second end plate 1.3. A drain pipe 16 connecting the filtrate space and the outlet pipe 7 is installed at the housing 1, and a drain pipe valve 16.1 is installed at the drain pipe 16. The inlet pipe 2 is installed at the first end plate 1.2. The filter plate 1.5 is fixedly connected to the second end plate 1.3 and the two side plates 1.4.Both ends of the first gate 11 are fixed with a first rotating shaft 11.1 extending out of the housing 1. There are two first gate drive units, each including a first hinge seat 11.2, a first electric push rod 11.3 mounted on the first hinge seat 11.2, and a first rotating arm 11.4 hinged to the first electric push rod 11.3. The first rotating arm 11.4 is fixedly connected to the first rotating shaft 11.1. Both ends of the second gate 12 are fixed with a second rotating shaft extending out of the housing 1. There are two second gate drive units, each including a second hinge seat 12.1, a first rotating shaft 11.1 extending out of the housing 1, and a first rotating arm 11.4 hinged to the first electric push rod 11.3. The first rotating arm 11.4 is fixedly connected to the first rotating shaft 11.1. The second hinge seat 12.1 has a second electric push rod 12.2 and a second rotating arm 12.3 hinged to the second electric push rod 12.2. The second rotating arm 12.3 is fixedly connected to the second rotating shaft. The third gate 13 has a third rotating shaft 13.1 extending out of the housing 1 fixed at both ends. There are two third gate drive units. The third gate drive unit includes a third hinge seat 13.2, a third electric push rod 13.3 installed on the third hinge seat 13.2, and a third rotating arm 13.4 hinged to the third electric push rod 13.3. The third rotating arm 13.4 is fixedly connected to the third rotating shaft 13.1. The rotating filter drum 6 includes a circumferential plate 6.1 with filter holes 6.2, two end ring plates 6.3, and two rotating tubes 6.4 respectively fixedly connected to the two end ring plates 6.3. A mounting bearing 6.4.1 is installed between the rotating tube 6.4 and the housing 1. The water outlet pipe 7 is an L-shaped pipe and passes through one of the rotating tubes 6.4. The L-shaped pipe is fixedly connected to the housing 1 by a fixing bracket 7.2. The filter drum drive unit includes a sprocket motor 17.1, a driving sprocket 17.2 installed on the sprocket motor 17.1, a driven sprocket 17.3 installed at one of the rotating tubes 6.4, and a transmission chain 17.4 installed between the driving sprocket 17.2 and the driven sprocket 17.3.

[0074] Working principle: As shown in the figure, when the water in the inlet pipe passes through the electrocoagulation space, due to the electrocoagulation effect, some of the impurities in the water will turn into flocs and rise to the surface of the water in the electrocoagulation space; some impurities will form sediment and settle to the bottom of the electrocoagulation space under the action of gravity.

[0075] Under normal circumstances, the removal device treats the water, specifically performing particulate matter removal. During particulate matter removal, the first gate is open, and the second and third gates are closed. The liquid level in the electrocoagulation space is lower than the top of the vertical baffle. At this time, water in the electrocoagulation space produces floating flocs and sinking sediment. The water then enters the collection branch pipe, collection main pipe, and channel plate through the inlet holes into the filtration space for filtration. Because there are many inlet holes, the inlet speed and volume of each individual inlet hole are small, so no significant negative pressure is generated, thus not affecting the normal floating of the flocs to the water surface. At this time, the scraper can normally scrape off the filter residue at the rotating filter drum. After the filter residue accumulates, it can slide down the scraper into the collection space.

[0076] After a period of time, a large number of flocs float to the surface, meaning there are many flocs at the liquid surface in the electrocoagulation space, requiring cleaning. This necessitates the removal of the floating flocs. During this process, the first, second, and third gates are closed. As liquid enters through the inlet pipe, the liquid level in the electrocoagulation space gradually rises. When the level exceeds the top of the vertical baffle, water flows over the top of the baffle into the collection space. The flocs enter the collection space along with the flocs, and at this time, the translation plate can be moved horizontally, helping the flocs at the liquid surface move towards the collection space. After a period of time (when the flocs have flowed into the collection space), the first gate is opened again, causing the liquid level to drop (the rise and fall of the liquid level can be controlled by adjusting the flow rates of the inlet and outlet pipes) back to its previous height.

[0077] After a period of time, a significant amount of sediment will have settled. At this point, the sediment discharge operation can be performed. During the sediment discharge operation, the first and third gates are closed, and the second gate is opened. The liquid level in the electrocoagulation space is lower than the top of the vertical baffle. Because the second gate is open, the water flow will flush the sediment into the collection space. After a period of time (when the sediment has flowed into the collection space), the second gate is closed. At this time, the liquid level in the electrocoagulation space is lower than before. The liquid level in the electrocoagulation space can be gradually restored to its previous height by appropriately increasing the flow rate of the inlet pipe.

[0078] After a period of time, some flocs may be blocked and stuck in the collection branch pipe as they float to the surface. At this time, a cleaning operation can be performed on the collection branch pipe. During the cleaning operation, the first and second gates are closed, and the third gate is opened. The liquid level in the electrocoagulation space is higher than the bottom end of the strip-shaped through-hole but lower than the top end. The cleaning frame moves horizontally along the direction of the collection branch pipe. As the flocs in the collection branch pipe are scraped off and detached from the collection branch pipe, they flow with the water flow through the strip-shaped through-hole into the collection space. Afterward, the cleaning frame is reset, the third gate is closed, and the liquid level in the electrocoagulation space returns to its previous height. Then, the first gate is opened to resume the particulate matter removal operation.

[0079] In addition, the removal device can perform filtrate extraction. During this operation, both the inlet and outlet valves are closed, while the drain valve is open, allowing the filtrate in the filtrate space to be extracted through the outlet pipe. This removes the filtrate (which is also the treated water that meets standards), leaving flocs, sediment, and filter residue at the filter plate. After a period of time, as more flocs, sediment, and filter residue accumulate at the filter plate, the maintenance door can be opened for maintenance. The aforementioned operations of removing floating flocs, removing sinking sediment, and cleaning the collection branch pipes can be performed automatically on a regular schedule. The filter screen can be manually cleaned periodically.

[0080] Although the present invention has been illustrated and described with reference to preferred embodiments, those skilled in the art should understand that various changes and modifications can be made to the present invention without departing from the scope defined by the claims.

Claims

1. An integrated electrocoagulation rotary drum filter device for removing particulate matter from aquaculture water, characterized in that, The system includes a housing, an inlet pipe, an electrocoagulation unit, a rotary drum filter unit, and a cleaning unit. The housing has vertical and U-shaped partitions that divide the internal space into an electrocoagulation space, a filtration space, and a collection space. The electrocoagulation unit includes multiple anode plates and multiple cathode plates, which are alternately distributed. The rotary drum filter unit includes a rotating filter drum, a filter drum drive unit that drives the rotating filter drum, an outlet pipe extending into the rotating filter drum, an outlet pipe valve installed on the outlet pipe, and a scraper capable of scraping material from the outer surface of the rotating filter drum, with one end of the scraper located at the top of the collection space. A channel plate connects the vertical and U-shaped partitions, and the channel plate has one end closed. The connection channel has an open end, and the channel plate is connected to a main collection pipe via two connecting pipes. Multiple collection branch pipes with inlet holes are connected to the main collection pipe. The housing is equipped with a first gate plate and a first gate plate drive unit capable of closing the open end of the channel plate. The bottom end of the vertical partition has a slag discharge hole, and the housing is equipped with a second gate plate and a second gate plate drive unit capable of closing the slag discharge hole. The vertical partition has a strip-shaped through hole, and the housing is equipped with a third gate plate and a third gate plate drive unit capable of closing the strip-shaped through hole. The cleaning unit includes a cleaning frame and a cleaning frame translation drive unit. The cleaning frame includes a translation frame and multiple scraping rings through which the collection branch pipes pass.

2. The integrated electrocoagulation rotary drum filter aquaculture water particulate matter removal device according to claim 1, characterized in that, The collection branch pipe is a cylindrical pipe closed at one end; the translation frame includes a strip seat and multiple connecting plates connecting the strip seat and the scraping ring; the strip seat is also connected to a translation plate via an L-shaped rod; the cleaning frame translation drive unit includes a strip plate fixed to the box body, a drive motor installed at the box body, a lead screw bearing installed at the strip plate, a lead screw connected to the lead screw bearing and driven by the drive motor, and a guide rod connected between the box body and the strip plate; the strip seat has a threaded hole that mates with the lead screw and a guide hole that mates with the guide rod.

3. The integrated electrocoagulation rotary drum filter aquaculture water particulate matter removal device according to claim 2, characterized in that, The strip-shaped through hole is located above the channel plate, and the distance between the end of the collecting branch pipe near the vertical partition and the vertical partition is less than 2cm; the number of scraping rings and collecting branch pipes are equal and they correspond one-to-one, and each scraping ring is passed through one collecting branch pipe; the inner diameter of the scraping ring is greater than or equal to the outer diameter of the collecting branch pipe, and the difference between the two is less than 1mm.

4. The integrated electrocoagulation rotary drum filter aquaculture water particulate matter removal device according to claim 2, characterized in that, The inlet pipe is connected to a distribution pipe, which is perpendicular to the inlet pipe and has multiple liquid outlet holes. An inlet pipe valve is installed at the inlet pipe, which is connected to the electrocoagulation space. Multiple collection branch pipes are parallel to each other, evenly spaced, and located at the same horizontal height. The height of the collection branch pipes is higher than the height of the electrocoagulation unit. The ends of the multiple collection branch pipes all face the strip-shaped through hole.

5. The integrated electrocoagulation rotary drum filter aquaculture water particulate matter removal device according to claim 2, characterized in that, The scraper has baffles on both sides and is installed in the housing via an elastic reset hinge device. One end of the scraper abuts against the rotating filter drum. The top of the channel plate is arc-shaped, with lower sides and a higher middle.

6. The integrated electrocoagulation rotary drum filter aquaculture water particulate matter removal device according to claim 4, characterized in that, The housing includes a bottom plate, a first end plate, a second end plate, and two side plates. The first end plate, the vertical partition, and the second end plate are parallel to each other. The bottom plate includes an inclined plate and a horizontal plate fixedly connected to the inclined plate. A filter plate is fixed to the bottom plate to divide the collection space into a filter residue space and a filtrate space. A maintenance door is installed at the second end plate. A drain pipe connecting the filtrate space and the water outlet pipe is installed at the housing, and a drain pipe valve is installed at the drain pipe.

7. The integrated electrocoagulation rotary drum filter aquaculture water particulate matter removal device according to claim 1, characterized in that, The first gate has a first rotating shaft extending out of the housing fixed at both ends. There are two first gate drive units, each including a first hinge seat, a first electric push rod mounted on the first hinge seat, and a first rotating arm hinged to the first electric push rod. The first rotating arm is fixedly connected to the first rotating shaft. The second gate has a second rotating shaft extending out of the housing fixed at both ends. There are two second gate drive units, each including a second hinge seat, a second electric push rod mounted on the second hinge seat, and a second rotating arm hinged to the second electric push rod. The second rotating arm is fixedly connected to the second rotating shaft. The third gate has a third rotating shaft extending out of the housing fixed at both ends. There are two third gate drive units, each including a third hinge seat, a third electric push rod mounted on the third hinge seat, and a third rotating arm hinged to the third electric push rod. The third rotating arm is fixedly connected to the third rotating shaft.

8. The integrated electrocoagulation rotary drum filter aquaculture water particulate matter removal device according to claim 1, characterized in that, The rotating filter drum includes a circumferential plate with filter holes, two end ring plates, and two rotating tubes respectively fixedly connected to the two end ring plates. A mounting bearing is installed between the rotating tubes and the housing. The water outlet pipe is an L-shaped pipe that passes through one of the rotating tubes. The L-shaped pipe is fixedly connected to the housing by a fixed bracket. The filter drum drive unit includes a sprocket motor, a driving sprocket installed on the sprocket motor, a driven sprocket installed at one of the rotating tubes, and a transmission chain installed between the driving sprocket and the driven sprocket.

9. The integrated electrocoagulation rotary drum filter aquaculture water particulate matter removal device according to claim 2, characterized in that, The removal device is capable of performing particulate matter removal, floating floc discharge, sinking sludge discharge, and collection branch pipe cleaning operations. During the particulate matter removal operation, the first gate is open, and the second and third gates are closed, resulting in the liquid level in the electrocoagulation space being lower than the top of the vertical partition. During the floating floc discharge operation, the first, second, and third gates are closed, resulting in the liquid level in the electrocoagulation space being higher than the top of the vertical partition. During the sinking sludge discharge operation, the first and third gates are closed, and the second gate is open, resulting in the liquid level in the electrocoagulation space being lower than the top of the vertical partition. During the collection branch pipe cleaning operation, the first and second gates are closed, and the third gate is open, resulting in the liquid level in the electrocoagulation space being higher than the bottom of the strip-shaped through-hole and lower than the top of the strip-shaped through-hole, and the cleaning frame moves horizontally along the direction of the collection branch pipe.

10. The integrated electrocoagulation rotary drum filter aquaculture water particulate matter removal device according to claim 6, characterized in that, The removal device is capable of performing a filtrate extraction operation. During the filtrate extraction operation, both the inlet valve and the outlet valve are closed, and the drain valve is opened, allowing the filtrate in the filtrate space to be extracted from the outlet pipe.

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