High-arsenic wastewater treatment system and multi-stage filtering device

Abstract

The invention relates to the technical field of high-arsenic wastewater treatment, and discloses a high-arsenic wastewater treatment system and a multi-stage filtering device.The high-arsenic wastewater treatment system comprises a sliding rail, a transmission frame, a limiting frame and a barrel, the sliding rail, the transmission frame and the limiting frame are fixedly installed on the ground, and the transmission frame and the limiting frame are located on the two sides of the sliding rail; the feeding auxiliary mechanism is used for assisting in feeding the filtering medium in the barrel body through a supporting plate in the feeding auxiliary mechanism; by arranging the moving mechanism and the feeding auxiliary mechanism, the driving motor is started to drive the barrel to rotate so as to adjust the position of the barrel, and the discharging port is formed in one side of the barrel, so that the barrel can rotate to the position where the discharging port faces downwards, an internal filtering medium is poured out of the barrel, and when a new filtering medium is added, a connecting rod moves up and down, so that the filtering efficiency is improved. The supporting plate is driven to move up and down in a reciprocating mode to jolt the filter media on the supporting plate, so that the filter media can be rapidly and evenly distributed when added on the supporting plate, feeding of the filter media is facilitated, and the filter media are more convenient to replace.

Description

Technical Field

[0001] The present invention relates to the technical field of high-arsenic wastewater treatment, in particular to a high-arsenic wastewater treatment system and a multi-stage filtration device. Background Art

[0002] Arsenic-containing wastewater primarily originates from non-ferrous metal smelting, chemical, electronics, mining, and other industries. For example, in the production of gallium arsenide wafers, arsenic-containing wastewater is generated during wafer surface cleaning, wet etching, thinning, and dicing. Arsenic-containing wastewater can be treated using a precipitation method, which utilizes the property of soluble arsenic to form insoluble compounds with metal ions. Precipitants (such as calcium salts and iron salts) are added to remove the arsenic by precipitation, and the arsenic precipitate is then filtered through a filtration device.

[0003] A multi-media filter with Chinese patent application number 202411313548.1 includes a filter medium replacement device, the bottom of the filter medium replacement device is threadedly connected to a siphon base device, and a nut at one end of the top of the siphon base device is connected to a multiple filtering device. A filter medium replacement device is provided, which changes the current by changing the water pressure to break the circuit, cancels the fixation of the filter medium for replacement, and helps to avoid the problem of adhesion between multiple media in the multi-media filter and difficulty in replacement. A siphon base device is provided at the bottom of the water pipe, and the upward movement of the piston generates suction to suck water from the bottom to the top to flush out the impurities that clog the filter material and discharge it out of the device, solving the problem of the filter medium being blocked on the water source filtration when filtering water. Multiple filtering devices are provided, and multiple filtrations are performed until the required amount is met, which helps to solve the problem of traditional multi-media filters being sensitive to water quality.

[0004] Nowadays, when treating arsenic-containing wastewater, the "FeCl3 precipitation + multi-media filtration + activated carbon adsorption" method can be used to treat arsenic-containing wastewater. However, the filter medium in the multi-media filter needs to be cleaned and replaced regularly. When replacing the filter medium in the multi-media filter, the operation is relatively cumbersome and the replacement is inconvenient. Summary of the Invention

[0005] The object of the present invention is to provide a high-arsenic wastewater treatment system and a multi-stage filtration device to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A high-arsenic wastewater treatment system and a multi-stage filtration device, comprising a slide rail, a transmission frame, a limit frame and a cylinder, wherein the slide rail, the transmission frame and the limit frame are fixedly installed on the ground, and the transmission frame and the limit frame are located on both sides of the slide rail;

[0008] Two sets of delivery pipes and backwash pipes, one set of delivery pipes and backwash pipes is provided at the upper and lower ends of the cylinder;

[0009] A moving mechanism, wherein the moving mechanism is arranged on the slide rail and drives the cylinder to move through the moving frame therein;

[0010] A feeding auxiliary mechanism, the feeding auxiliary mechanism is provided on the cylinder, and the feeding auxiliary mechanism assists in feeding the filter medium inside the cylinder through the support plate therein;

[0011] A feeding mechanism is provided on one side of the cylinder and discharges the filter medium inside the cylinder through a feeding rod therein;

[0012] The sealing mechanism is provided on the cylinder and the delivery pipe, and the sealing mechanism seals the connection between the delivery pipe and the backwash pipe and the cylinder through the first sealing member and the second sealing member.

[0013] Optionally, the moving mechanism includes a moving frame and a rotating motor, the moving frame is slidably mounted on the slide rail, the rotating motor is fixedly mounted on one side of the moving frame, the output end of the rotating motor extends into the interior of the moving frame, and the cylinder is fixedly mounted on the output end of the rotating motor;

[0014] An upper head is welded and fixed on the top of the cylinder, a lower head is welded and fixed on the bottom of the cylinder, and a plurality of sliding holes are opened on the top of the upper head;

[0015] The feeding auxiliary mechanism includes a rotating frame, a rotating block, a connecting ring, a baffle, several connecting rods and a support plate. The rotating frame is fixedly installed on both sides of the top of the upper head, the rotating block is rotatably installed on the inner wall of the rotating frame, and several connecting rods are slidably installed on the inner wall of the sliding hole. The connecting ring is fixedly installed on the top of the connecting rod, and the baffle is fixedly installed on both sides of the bottom of the connecting ring. The rotating block is located at the inner wall corresponding to the baffle. The support plate is fixedly installed on the bottom end of the connecting rod, and several water holes are opened on the support plate.

[0016] Optionally, a drive motor is fixedly installed on one side of the transmission frame, the output end of the drive motor extends to the interior of the transmission frame, a first screw rod is fixedly installed on the output end of the drive motor, a limit rod is fixedly installed on the inner wall of the limit frame, the movable frame is threadedly connected to the outer wall of the first screw rod through a threaded hole at the bottom of one side, and the movable frame is slidably installed on the outer wall of the limit rod through a hole at the bottom of the other side.

[0017] Optionally, a plurality of limiting cylinders are fixedly installed on the inner wall of the cylinder, the connecting rod is slidably installed on the corresponding inner wall of the limiting cylinder, a sealing plate is fixedly installed on the top of the upper head by screws, and the sealing plate is located at the connection between the upper head and the connecting rod, and a plurality of discharge ports are welded and fixed on one side of the outer wall of the cylinder.

[0018] Optionally, a fixing bracket is fixedly installed on one side of the outer wall of the upper head, a transmission motor is fixedly installed on one side of the fixing bracket, and a mounting frame is fixedly installed on the other side of the fixing bracket, the output end of the transmission motor extends to the inside of the mounting frame, and the output end of the transmission motor is fixedly installed with a first turntable, and two transmission belts are installed on the outer wall of the first turntable, two rotating holes are opened on one side of the mounting frame, and a mounting shaft is rotatably installed on the inner wall of the rotating hole, and a second turntable is fixedly installed on one end of the mounting shaft, and the other end of the corresponding transmission belt is installed on the outer wall of the corresponding second turntable, and two electric push rods are fixedly installed on the top of the mounting frame, the output end of the electric push rod extends to the inside of the mounting frame, and an adjustment frame is fixedly installed on the output end of the electric push rod, and the adjustment frame is located at the outer wall corresponding to the transmission belt, and the other end of the mounting shaft is fixedly installed on one end of the rotating block.

[0019] Optionally, the sealing mechanism includes a first connecting pipe, a mounting ring, several cylinders, a first seal, a bellows, a second connecting pipe, a second seal, a rotating ring, a rotating member, a second motor, a second screw, a fixing member and a gear ring, the first connecting pipe is fixedly mounted on one end of the upper head and the lower head, the mounting ring is fixedly mounted on the outer wall of the first connecting pipe, several cylinders are fixedly mounted on the outer wall of the mounting ring, the first seal is fixedly mounted on the output end of the cylinder, the bellows is fixedly mounted on the inner wall of the first seal, and the other end of the bellows is fixedly mounted on the inner wall of the first connecting pipe. The second connecting pipe is fixedly installed on the outer walls of the conveying pipe and the backwash pipe, the rotating ring is fixedly installed on the outer wall of the second connecting pipe, the rotating part is rotatably installed on the bottom end of the rotating ring, a sliding frame is fixedly installed on the outer wall of the rotating part, the second motor is fixedly installed on one side of the sliding frame, the output end of the second motor extends to the inside of the sliding frame, the second screw rod is fixedly installed on the output end of the second motor, the fixing part is threadedly connected to the outer wall of the second screw rod through the threaded hole therein, the fixing part is slidably installed on the inner wall of the sliding frame, and the gear ring is fixedly installed on the outer wall of the rotating part.

[0020] Optionally, corresponding to the engagement of the first sealing member and the second sealing member, the position of the fixing member corresponds to the first sealing member and the second sealing member, and a mounting bracket is fixedly mounted on the outer wall of the second connecting pipe.

[0021] Optionally, a first motor is fixedly mounted on the mounting frame, a spur gear is fixedly mounted on the output end of the first motor, the spur gear is meshed with the gear ring, and a plurality of fixed blocks are fixedly mounted on the top of the outer wall of the second sealing member, and the positions of the fixed blocks correspond to the fixing member.

[0022] Optionally, the unloading mechanism includes a mounting plate, a support frame, several connecting cylinders, a third motor and a feeding rod. The mounting plate is fixedly installed on one side of the outer wall of the cylinder by screws. The position of the mounting plate corresponds to the discharge port. A fixing hole is fixedly installed on one side of the mounting plate. The connecting cylinder is fixedly installed at the fixing hole on one side of the mounting plate. The support frame is fixedly installed on the inner wall of the fixing hole. The third motor is fixedly installed on the support frame. The feeding rod is fixedly installed on the output end of the third motor.

[0023] A treatment system based on a multi-stage filtration device for high-arsenic wastewater: comprising a sedimentation tank and an activated carbon adsorber, wherein the outlet of the sedimentation tank is connected to the inlet of the delivery pipe via a pipeline, and the inlet of the activated carbon adsorber is connected to the outlet of the delivery pipe via a pipeline;

[0024] introducing the arsenic-containing wastewater into a sedimentation tank (7), and adding ferrous sulfate as a coagulant into the sedimentation tank (7);

[0025] By Fe 3+ Hydrolysis generates Fe(OH)3 colloid, which captures AsO43- in wastewater by surface adsorption and netting to form floccules;

[0026] The wastewater after the sedimentation treatment is transported to the interior of the cylinder (2) and subjected to three-stage gradient filtration through a composite filtration structure consisting of a quartz sand layer and an activated carbon layer arranged in the cylinder (2).

[0027] The present invention has at least the following beneficial effects:

[0028] (1) This solution sets a moving mechanism and a loading auxiliary mechanism, and the moving frame can move on the slide rail. The driving motor starts to drive the cylinder to rotate to adjust the position of the cylinder, and a discharge port is set on one side of the cylinder, so that the cylinder can be rotated to a position where the discharge port faces downward, so that the internal filter medium is poured out from the cylinder. When adding new filter medium to the inside of the cylinder, the cylinder can be rotated to its original position, and the filter medium is added to the inside of the cylinder from the discharge port. When adding, the connecting rod moves up and down, driving the support plate to move back and forth up and down to shake the filter medium on the support plate, so that each filter medium can be quickly and evenly distributed on the support plate when added, which is convenient for loading the filter medium and making the replacement of the filter medium more convenient;

[0029] (2) In this solution, after the first seal and the second seal are closed and connected, the second motor is started to drive the second screw to rotate, and the fixed part is driven to move in the sliding frame, so that the fixed part moves to the first seal and the second seal, and the two ends of the fixed part are located at one end of the first seal and the second seal. Then, the first motor is started, and the engagement of the spur gear and the gear ring drives the rotating part to rotate, so that the fixed part rotates to the fixed block, and the connection between the first seal and the second seal is tightened by clamping;

[0030] (3) This solution uses an electric push rod to control the up and down movement of the adjustment frame, which can adjust the tightness of the transmission belt installation, so that the transmission belt can better transmit between the first turntable and the second turntable, reduce the slippage of the transmission belt, and enable the transmission motor to better drive the connecting rod to move up and down;

[0031] (4) This solution sets up a feeding mechanism. When taking out the filter medium in the cylinder, the mounting plate is installed at the discharge port on the cylinder through the screw part, and the connecting cylinder is inserted into the corresponding discharge port. The third motor starts to drive the feeding rod to rotate, and the feeding rod is used to accelerate the removal of the filter medium, which can well assist in the removal of the filter medium. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0033] Figure 1 It is a schematic diagram of the structure of the present invention;

[0034] Figure 2 This is an installation diagram of the blanking mechanism of the present invention;

[0035] Figure 3 This is the installation diagram of the rotating block of the present invention;

[0036] Figure 4 It is a cross-sectional view of the installation frame of the present invention;

[0037] Figure 5 This is the installation diagram of the connecting ring and the support plate of the present invention;

[0038] Figure 6 This is an installation diagram of the first connecting pipe and the second connecting pipe of the present invention;

[0039] Figure 7 A cross-sectional view of the first connecting pipe and the second connecting pipe of the present invention;

[0040] Figure 8This is a diagram of the high-arsenic wastewater treatment system of the present invention.

[0041] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0042] 1. Slide rail; 101. Transmission frame; 102. Driving motor; 103. First screw rod; 104. Limiting frame; 105. Limiting rod; 106. Moving frame; 107. Rotating motor; 108. Conveying pipe; 109. Backwashing pipe; 2. Cylinder; 201. Upper head; 202. Lower head; 203. Discharge port; 204. Limiting cylinder; 205. Rotating frame; 206. Rotating block; 207. Connecting ring; 208. Baffle; 209. Connecting rod; 210. Support plate; 211. Sealing plate; 3. Fixed frame; 301. Transmission motor; 302. First turntable; 303. Mounting frame; 304. Mounting shaft; 305. Second turntable; 306. Transmission belt; 307. Adjusting frame; 308, electric push rod; 4, first connecting pipe; 401, mounting ring; 403, cylinder; 404, first sealing member; 405, bellows; 5, second connecting pipe; 501, second sealing member; 502, mounting frame; 503, first motor; 505, spur gear; 506, rotating ring; 507, rotating member; 508, second motor; 509, second screw rod; 510, fixing member; 511, gear ring; 512, fixing block; 6, mounting plate; 601, support frame; 602, connecting tube; 603, third motor; 604, feeding rod; 7, sedimentation tank; 701, activated carbon adsorber; 8, moving mechanism; 9, loading auxiliary mechanism; 10, unloading mechanism; 11, sealing mechanism. DETAILED DESCRIPTION

[0043] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0044] See also Figures 1-8The present invention provides a high-arsenic wastewater treatment system and a multi-stage filtration device, including a slide rail 1, a transmission frame 101, a limit frame 104 and a cylinder 2, wherein the slide rail 1, the transmission frame 101 and the limit frame 104 are fixedly installed on the ground, and the transmission frame 101 and the limit frame 104 are located on both sides of the slide rail 1; a delivery pipe 108 and a backwash pipe 109, which are respectively arranged at the upper and lower ends of the cylinder 2; a moving mechanism 8, which is arranged on the slide rail 1, and the moving mechanism 8 The cylinder 2 is driven to move its position by the movable frame 106; the loading auxiliary mechanism 9 is arranged on the cylinder 2, and the loading auxiliary mechanism 9 assists in loading the filter medium inside the cylinder 2 through the support plate 210 therein; the unloading mechanism 10, the unloading mechanism 10 is arranged on one side of the cylinder 2, and the unloading mechanism 10 unloads the filter medium inside the cylinder 2 through the feeding rod 604 therein; the sealing mechanism 11, the sealing mechanism 11 is arranged on the cylinder 2 and the conveying pipe 108 , the sealing mechanism 11 seals the connection between the conveying pipe 108 and the backwash pipe 109 and the cylinder 2 through the first sealing member 404 and the second sealing member 501 therein; by setting the moving mechanism 8 and the loading auxiliary mechanism 9, the moving frame 106 can move its position on the slide rail 1, and the cylinder 2 is driven to rotate by the driving motor 102, so that the cylinder 2 can be rotated to adjust its position, and a discharge port 203 is provided on one side of the cylinder 2, so that the cylinder 2 can be rotated to a position where the discharge port 203 faces downward, so that the internal filter medium is poured out from the cylinder 2, and when adding new filter medium to the cylinder 2, the cylinder 2 can be rotated to its original position, and the filter medium is added to the cylinder 2 from the discharge port 203, and when adding, the connecting rod 209 moves up and down, driving the support plate 210 to move back and forth up and down to shake the filter medium on the support plate 210, so that each filter medium can be quickly and evenly distributed on the support plate 210 when adding, which facilitates the loading of the filter medium and makes the replacement of the filter medium more convenient.

[0045] In this example, the filter media are added in order from small to large particle sizes.

[0046] In this example, anthracite can be used as a coarse filter layer, quartz sand as a transition layer, and garnet as a fine filter layer. By arranging filter media of different types and sizes in the cylinder 2, multi-stage filtration treatment of high-arsenic wastewater can be achieved. When treating arsenic-containing wastewater, the wastewater is input into the sedimentation tank 7, and a coagulant is added to the sedimentation tank 7. The coagulant can be ferrous sulfate (FeSO4·7H2O). 3+The Fe(OH)3 colloid generated by hydrolysis then captures arsenate (AsO43-) through surface adsorption and netting to form flocs. The wastewater after precipitation is transported to the inside of the cylinder 2, and the flocs in the wastewater are filtered through the filter medium therein. By arranging filter media of different types and sizes in the cylinder 2, multi-stage filtration treatment of high-arsenic wastewater can be achieved.

[0047] In some embodiments, see Figure 3 、 Figure 5 , the moving mechanism 8 includes a moving frame 106 and a rotating motor 107, the moving frame 106 is slidably mounted on the slide rail 1, the rotating motor 107 is fixedly mounted on one side of the moving frame 106, the output end of the rotating motor 107 extends to the inside of the moving frame 106, and the cylinder 2 is fixedly mounted on the output end of the rotating motor 107; an upper head 201 is welded and fixed on the top of the cylinder 2, and a lower head 202 is welded and fixed on the bottom of the cylinder 2. A plurality of sliding holes are opened on the top of the upper head 201. The feeding auxiliary mechanism 9 includes a rotating frame 205, a rotating block 206, a connecting ring 207, a baffle 208, a plurality of connecting rods 209 and a support plate 210. The rotating frame 205 is fixedly mounted on both sides of the top of the upper head 201, the rotating block 206 is rotatably mounted on the inner wall of the rotating frame 205, and a plurality of connecting rods 209 are slidably mounted on the inner wall of the sliding hole. The connecting ring 207 is fixedly mounted on the top of the connecting rod 209, and the baffle 208 is fixedly mounted on both sides of the bottom of the connecting ring 207. The movable block 206 is located on the inner wall of the corresponding baffle 208, the support plate 210 is fixedly mounted on the bottom end of the connecting rod 209, and a number of water delivery holes are opened on the support plate 210. A drive motor 102 is fixedly mounted on one side of the transmission frame 101, and the output end of the drive motor 102 extends to the inside of the transmission frame 101. The output end of the drive motor 102 is fixedly mounted with a first screw rod 103, and a limit rod 105 is fixedly mounted on the inner wall of the limit frame 104. The movable frame 106 is threadedly connected to the outer wall of the first screw rod 103 through a threaded hole at the bottom of one side, and the movable frame 106 is slidably mounted on the outer wall of the limit rod 105 through a hole at the bottom of the other side; the rotating block 206 is tear-drop-shaped, and the rotating block 206 rotates, supporting the connecting ring 207 to rise through the higher side of the rotating block 206. When the higher side of the rotating block 206 rotates to the bottom, the connecting ring 207 falls through the gravity of the support plate 210 and the filter medium thereon, causing the support plate 210 to move back and forth up and down.

[0048] In this example, the driving motor 102 is started to drive the first screw rod 103 to rotate, and the first screw rod 103 drives the movable frame 106 to move on the slide rail 1 through the threaded connection with the movable frame 106, and the rotating motor 107 is started to drive the cylinder 2 to rotate.

[0049] In some embodiments, see Figure 5A number of limiting cylinders 204 are fixedly installed on the inner wall of the cylinder 2, and the connecting rod 209 is slidably installed on the inner wall of the corresponding limiting cylinder 204. A sealing plate 211 is fixedly installed on the top of the upper head 201 by screws. The sealing plate 211 is located at the connection between the upper head 201 and the connecting rod 209, and a number of discharge ports 203 are welded and fixed on one side of the outer wall of the cylinder 2; by setting the limiting cylinder 204, the connecting rod 209 can slide more smoothly. After the filter medium in the cylinder 2 is replaced, the sealing plate 211 is installed on the upper head 201 by screws to seal the connection between the connecting rod 209 and the upper head 201.

[0050] In this embodiment, the discharge port 203 is tapered, so that the filter medium can be discharged from the discharge port 203 more smoothly.

[0051] In some embodiments, see Figure 3 、 Figure 4 A fixing frame 3 is fixedly installed on one side of the outer wall of the upper head 201, a transmission motor 301 is fixedly installed on one side of the fixing frame 3, and a mounting frame 303 is fixedly installed on the other side of the fixing frame 3. The output end of the transmission motor 301 extends into the interior of the mounting frame 303, and a first turntable 302 is fixedly installed on the output end of the transmission motor 301. Two transmission belts 306 are installed on the outer wall of the first turntable 302. Two rotating holes are opened on one side of the mounting frame 303, and a mounting shaft 304 is rotatably installed on the inner wall of the rotating hole. A second turntable 305 is fixedly installed on one end of the mounting shaft 304, corresponding to the transmission belt 306. The other end is installed on the outer wall of the corresponding second turntable 305. Two electric push rods 308 are fixedly installed on the top of the installation frame 303. The output end of the electric push rod 308 extends to the inside of the installation frame 303. The output end of the electric push rod 308 is fixedly installed with an adjustment frame 307. The adjustment frame 307 is located on the outer wall of the corresponding transmission belt 306. The other end of the installation shaft 304 is fixedly installed on one end of the rotating block 206; the transmission motor 301 is started to drive the first turntable 302 to rotate, and drives the second turntable 305 to rotate through the transmission belt 306, thereby driving the rotating block 206 to rotate through the installation shaft 304.

[0052] In this example, the adjustment frame 307 is controlled to move up and down by the electric push rod 308, and the tightness of the installation of the transmission belt 306 can be adjusted so that the transmission belt 306 can be better transmitted between the first turntable 302 and the second turntable 305. Rollers are provided at the upper and lower ends of the inner wall of the adjustment frame 307.

[0053] In some embodiments, see Figure 5 、 Figure 6The sealing mechanism 11 includes a first connecting pipe 4, a mounting ring 401, a plurality of cylinders 403, a first sealing member 404, a bellows 405, a second connecting pipe 5, a second sealing member 501, a rotating ring 506, a rotating member 507, a second motor 508, a second screw rod 509, a fixing member 510 and a gear ring 511. The first connecting pipe 4 is fixedly mounted on one end of the upper head 201 and the lower head 202, the mounting ring 401 is fixedly mounted on the outer wall of the first connecting pipe 4, a plurality of cylinders 403 are fixedly mounted on the outer wall of the mounting ring 401, the first sealing member 404 is fixedly mounted on the output end of the cylinder 403, the bellows 405 is fixedly mounted on the inner wall of the first sealing member 404, the other end of the bellows 405 is fixedly mounted on the inner wall of the first connecting pipe 4, and the second connecting pipe 5 The second connecting pipe 505 is fixedly mounted on the outer wall of the conveying pipe 108 and the backwash pipe 109, the rotating ring 506 is fixedly mounted on the outer wall of the second connecting pipe 5, the rotating member 507 is rotatably mounted on the bottom end of the rotating ring 506, the outer wall of the rotating member 507 is fixedly mounted with a sliding frame, the second motor 508 is fixedly mounted on one side of the sliding frame, the output end of the second motor 508 extends to the inside of the sliding frame, the second screw rod 509 is fixedly mounted on the output end of the second motor 508, the fixing member 510 is threadedly connected to the outer wall of the second screw rod 509 through the threaded hole therein, the fixing member 510 is slidably mounted on the inner wall of the sliding frame, the gear ring 511 is fixedly mounted on the outer wall of the rotating member 507, corresponding to the first seal 404 and the second seal 501, and the position of the fixing member 510 is consistent with the first seal 404 and the second seal Corresponding to the component 501, a mounting bracket 502 is fixedly installed on the outer wall of the second connecting pipe 5, and a first motor 503 is fixedly installed on the mounting bracket 502. A spur gear 505 is fixedly installed on the output end of the first motor 503, and the spur gear 505 is meshed with the gear ring 511. A plurality of fixing blocks 512 are fixedly installed on the top of the outer wall of the second sealing component 501. The position of the fixing block 512 corresponds to the fixing component 510. The delivery pipe 108 is used to transport waste water, and the backwash pipe 109 is used to transport cleaning water. It is input from the bottom of the cylinder 2 and then output from the backwash pipe 109 at the top of the cylinder 2 to backwash the filter medium inside the cylinder 2. The cylinder 403 on the first connecting pipe 4 is started to control the up and down movement of the first sealing component 404, which is convenient for the cylinder 2 and the delivery pipe 1 08. The backwash pipe 109 is connected, and after the first connecting pipe 4 and the first seal 404 and the second seal 501 on the corresponding second connecting pipe 5 are closed and connected, the second motor 508 is started to drive the second screw rod 509 to rotate, and drive the fixed part 510 to move in the sliding frame, so that the fixed part 510 moves to the first seal 404 and the second seal 501, and the two ends of the fixed part 510 are located at one end of the first seal 404 and the second seal 501. Then the first motor 503 is started, and the engagement of the spur gear 505 with the gear ring 511 drives the rotating part 507 to rotate, so that the fixed part 510 rotates to the fixed block 512, and the connection between the first seal 404 and the second seal 501 is increased more tightly by clamping.

[0054] In this embodiment, the fixing member 510 is U-shaped, and both ends of the fixing block 512 are inclined.

[0055] For further information, please refer to Figure 2 The unloading mechanism 10 includes a mounting plate 6, a support frame 601, several connecting cylinders 602, a third motor 603 and a feeding rod 604. The mounting plate 6 is fixedly installed on one side of the outer wall of the cylinder 2 by screws. The position of the mounting plate 6 corresponds to the discharge port 203. A fixing hole is fixedly installed on one side of the mounting plate 6. The connecting cylinder 602 is fixedly installed at the fixing hole on one side of the mounting plate 6. The support frame 601 is fixedly installed on the inner wall of the fixing hole. The third motor 603 is fixedly installed on the support frame 601, and the feeding rod 604 is fixedly installed at the output end of the third motor 603. By setting the unloading mechanism 10, when the filter medium in the cylinder 2 is taken out, the mounting plate 6 is installed at the discharge port 203 on the cylinder 2 by screws, the connecting cylinder 602 is inserted into the corresponding discharge port 203, and the third motor 603 is started to drive the feeding rod 604 to rotate, thereby accelerating the removal of the filter medium through the feeding rod 604, which can well assist the removal of the filter medium.

[0056] In this example, after the filter medium is replaced, the sealing cover is fixed to the discharge port 203 by screws to seal the discharge port 203 .

[0057] Furthermore, it includes a sedimentation tank 7 and an activated carbon adsorber 701. The outlet of the sedimentation tank 7 is connected to the inlet of the delivery pipe 108 through a pipe, and the inlet of the activated carbon adsorber 701 is connected to the outlet of the delivery pipe 108 through a pipe; a pump body is provided at the pipe connecting the sedimentation tank 7, the activated carbon adsorber 701 and the delivery pipe 108 for transporting wastewater.

[0058] In this example, the pipe connecting the sedimentation tank 7 and the delivery pipe 108 is installed on the delivery pipe 108 at the upper end of the cylinder 2, and the pipe connecting the activated carbon adsorber 701 and the delivery pipe 108 is installed on the delivery pipe 108 at the bottom end of the cylinder 2.

[0059] The process of the present invention is as follows: when treating arsenic-containing wastewater, the wastewater is input into a sedimentation tank 7, and a coagulant is added to the sedimentation tank 7. The coagulant can be ferrous sulfate (FeSO4·7H2O). 3+ The Fe(OH)3 colloid generated by hydrolysis then captures arsenate (AsO43-) through surface adsorption and netting to form flocs. The wastewater after precipitation is transported to the inside of the cylinder 2, and the flocs in the wastewater are filtered through the filter medium therein. The impurities in the wastewater are then adsorbed by the activated carbon adsorber for further treatment.

[0060] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0061] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A multi-stage filtration device for high-arsenic wastewater, characterized in that: include: A slide rail (1), a transmission frame (101), a limit frame (104) and a cylinder (2), wherein the slide rail (1), the transmission frame (101) and the limit frame (104) are fixedly installed on the ground, and the transmission frame (101) and the limit frame (104) are located on both sides of the slide rail (1); Two groups of delivery pipes (108) and backwash pipes (109), one group of the delivery pipes (108) and backwash pipes (109) is provided at both upper and lower ends of the cylinder (2); A moving mechanism (8), wherein the moving mechanism (8) is arranged on the slide rail (1), and the moving mechanism (8) drives the cylinder (2) to move its position through the moving frame (106) therein; A loading auxiliary mechanism (9), the loading auxiliary mechanism (9) is arranged on the cylinder (2), and the loading auxiliary mechanism (9) assists in loading the filter medium inside the cylinder (2) through the support plate (210) therein; A feeding mechanism (10), the feeding mechanism (10) being arranged on one side of the cylinder (2), and the feeding mechanism (10) feeding the filter medium inside the cylinder (2) through a feeding rod (604) therein; A sealing mechanism (11) is provided on the cylinder (2) and the delivery pipe (108), and the sealing mechanism (11) seals the connection between the delivery pipe (108) and the backwash pipe (109) and the cylinder (2) through a first sealing member (404) and a second sealing member (501) therein.

2. A multi-stage filtration device for high-arsenic wastewater according to claim 1, characterized in that: The moving mechanism (8) comprises a moving frame (106) and a rotating motor (107), wherein the moving frame (106) is slidably mounted on the slide rail (1), the rotating motor (107) is fixedly mounted on one side of the moving frame (106), the output end of the rotating motor (107) extends into the interior of the moving frame (106), and the barrel (2) is fixedly mounted on the output end of the rotating motor (107); An upper sealing head (201) is welded and fixed to the top of the cylinder (2), and a lower sealing head (202) is welded and fixed to the bottom of the cylinder (2), and a plurality of sliding holes are opened at the top of the upper sealing head (201); The feeding auxiliary mechanism (9) comprises a rotating frame (205), a rotating block (206), a connecting ring (207), a baffle (208), a plurality of connecting rods (209) and a support plate (210), wherein the rotating frame (205) is fixedly mounted on both sides of the top of the upper head (201), the rotating block (206) is rotatably mounted on the inner wall of the rotating frame (205), the plurality of connecting rods (209) are slidably mounted on the inner wall of the sliding hole, the connecting ring (207) is fixedly mounted on the top of the connecting rod (209), the baffle (208) is fixedly mounted on both sides of the bottom of the connecting ring (207), the rotating block (206) is located at the inner wall corresponding to the baffle (208), the support plate (210) is fixedly mounted on the bottom end of the connecting rod (209), and the support plate (210) is provided with a plurality of water delivery holes.

3. A multi-stage filtration device for high-arsenic wastewater according to claim 2, characterized in that: A driving motor (102) is fixedly mounted on one side of the transmission frame (101), an output end of the driving motor (102) extends into the interior of the transmission frame (101), a first screw rod (103) is fixedly mounted on the output end of the driving motor (102), a limiting rod (105) is fixedly mounted on the inner wall of the limiting frame (104), the movable frame (106) is threadedly connected to the outer wall of the first screw rod (103) through a threaded hole at the bottom of one side, and the movable frame (106) is slidably mounted on the outer wall of the limiting rod (105) through a hole at the bottom of the other side.

4. The multi-stage filtration device for high-arsenic wastewater according to claim 2, characterized in that: A plurality of limiting cylinders (204) are fixedly mounted on the inner wall of the cylinder (2), and the connecting rod (209) is slidably mounted on the inner wall of the corresponding limiting cylinder (204). A sealing plate (211) is fixedly mounted on the top of the upper head (201) by screws, and the sealing plate (211) is located at the connection between the upper head (201) and the connecting rod (209). A plurality of discharge ports (203) are welded and fixed on one side of the outer wall of the cylinder (2).

5. The multi-stage filtration device for high-arsenic wastewater according to claim 2, characterized in that: A fixing frame (3) is fixedly mounted on one side of the outer wall of the upper head (201), a transmission motor (301) is fixedly mounted on one side of the fixing frame (3), a mounting frame (303) is fixedly mounted on the other side of the fixing frame (3), an output end of the transmission motor (301) extends into the interior of the mounting frame (303), a first rotary disc (302) is fixedly mounted on the output end of the transmission motor (301), two transmission belts (306) are mounted on the outer wall of the first rotary disc (302), two rotating holes are provided on one side of the mounting frame (303), and a mounting shaft (304) is rotatably mounted on the inner wall of the rotating hole. A second turntable (305) is fixedly mounted on one end of the mounting shaft (304), and the other end corresponding to the transmission belt (306) is mounted on the outer wall of the second turntable (305). Two electric push rods (308) are fixedly mounted on the top of the mounting frame (303), and the output ends of the electric push rods (308) extend into the interior of the mounting frame (303). An adjustment frame (307) is fixedly mounted on the output ends of the electric push rods (308), and the adjustment frame (307) is located on the outer wall of the transmission belt (306). The other end of the mounting shaft (304) is fixedly mounted on one end of the rotating block (206).

6. The multi-stage filtration device for high-arsenic wastewater according to claim 2, characterized in that: The sealing mechanism (11) comprises a first connecting pipe (4), a mounting ring (401), a plurality of cylinders (403), a first sealing member (404), a bellows (405), a second connecting pipe (5), a second sealing member (501), a rotating ring (506), a rotating member (507), a second motor (508), a second screw rod (509), a fixing member (510) and a gear ring (511); the first connecting pipe (4) is fixedly mounted on one end of the upper head (201) and the lower head (202); the mounting ring (401) is fixedly mounted on the outer wall of the first connecting pipe (4); the plurality of cylinders (403) are fixedly mounted on the outer wall of the mounting ring (401); the first sealing member (404) is fixedly mounted on the output end of the cylinder (403); the bellows (405) is fixedly mounted on the inner wall of the first sealing member (404); the bellows (405) The other end is fixedly mounted with the inner wall of the first connecting pipe (4), the second connecting pipe (5) is fixedly mounted on the outer walls of the conveying pipe (108) and the backwashing pipe (109), the rotating ring (506) is fixedly mounted on the outer wall of the second connecting pipe (5), the rotating member (507) is rotatably mounted on the bottom end of the rotating ring (506), the outer wall of the rotating member (507) is fixedly mounted with a sliding frame, the second motor (508) is fixedly mounted on one side of the sliding frame, the output end of the second motor (508) extends to the inside of the sliding frame, the second screw rod (509) is fixedly mounted on the output end of the second motor (508), the fixing member (510) is threadedly connected to the outer wall of the second screw rod (509) through the threaded hole therein, the fixing member (510) is slidably mounted on the inner wall of the sliding frame, and the gear ring (511) is fixedly mounted on the outer wall of the rotating member (507).

7. The multi-stage filtration device for high-arsenic wastewater according to claim 6, characterized in that: Corresponding to the engagement of the first sealing member (404) and the second sealing member (501), the position of the fixing member (510) corresponds to the first sealing member (404) and the second sealing member (501), and a mounting frame (502) is fixedly mounted on the outer wall of the second connecting pipe (5).

8. The multi-stage filtration device for high-arsenic wastewater according to claim 7, characterized in that: A first motor (503) is fixedly mounted on the mounting frame (502); a spur gear (505) is fixedly mounted on the output end of the first motor (503); the spur gear (505) is meshed with the gear ring (511); a plurality of fixing blocks (512) are fixedly mounted on the top of the outer wall of the second sealing member (501); the position of the fixing blocks (512) corresponds to that of the fixing member (510).

9. The multi-stage filtration device for high-arsenic wastewater according to claim 4, characterized in that: The unloading mechanism (10) comprises a mounting plate (6), a support frame (601), a plurality of connecting cylinders (602), a third motor (603) and a feeding rod (604); the mounting plate (6) is fixedly mounted on one side of the outer wall of the cylinder (2) by screws; the position of the mounting plate (6) corresponds to the discharge port (203); a fixing hole is fixedly mounted on one side of the mounting plate (6); the connecting cylinder (602) is fixedly mounted at the fixing hole on one side of the mounting plate (6); the supporting frame (601) is fixedly mounted on the inner wall of the fixing hole; the third motor (603) is fixedly mounted on the supporting frame (601); and the feeding rod (604) is fixedly mounted on the output end of the third motor (603).

10. A treatment system based on a high-arsenic wastewater multi-stage filtration device, comprising the high-arsenic wastewater multi-stage filtration device according to any one of claims 1 to 9, characterized in that: It also includes a sedimentation tank (7) and an activated carbon adsorber (701), wherein the outlet of the sedimentation tank (7) is connected to the inlet of the delivery pipe (108) through a pipeline, and the inlet of the activated carbon adsorber (701) is connected to the outlet of the delivery pipe (108) through a pipeline; introducing the arsenic-containing wastewater into a sedimentation tank (7), and adding ferrous sulfate as a coagulant into the sedimentation tank (7); By Fe 3+ Hydrolysis generates Fe(OH)3 colloid, which captures AsO43- in wastewater by surface adsorption and netting to form floccules; The wastewater after the sedimentation treatment is transported to the interior of the cylinder (2) and subjected to three-stage gradient filtration through a composite filtration structure consisting of a quartz sand layer and an activated carbon layer arranged in the cylinder (2).

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