CN114409158A - Filtering device for treating wastewater based on sulfur dioxide and using method thereof - Google Patents

Abstract

The invention discloses a filtering device for treating waste water based on sulfur dioxide and a using method thereof, and the filtering device comprises a bottom plate, a settling tank, a treatment tank, a guide assembly, a filter screen, a scraper blade, a cleaning roller and a driving assembly, wherein the settling tank is fixedly connected to one side of the top of the bottom plate, the treatment tank is fixedly connected to one side of the top of the bottom plate, the guide assembly for pumping water is arranged between the treatment tank and the settling tank, and slag collecting frames are symmetrically and fixedly connected to two sides of the inner wall of the treatment tank. Thereby cleaning the filter screen and being beneficial to keeping the water filtering effect of the filter screen.

Description

A filter device for treating wastewater based on sulfur dioxide and method of using the same

technical field

The invention belongs to the field of filtering devices, in particular to a filtering device for treating wastewater based on sulfur dioxide and a method for using the same.

Background technique

Sulfur dioxide is the most common, simplest, and irritating sulfur oxide, a colorless gas, and one of the main pollutants in the atmosphere. Since a large amount of coal is consumed in the process of vanadium and titanium production, and coal contains sulfur, so Sulfur dioxide is generated during combustion. In order to cool the combustion exhaust gas, it needs to be passed into the spray tower. At this time, the water inside the spray tower adsorbs the sulfur dioxide in the exhaust gas. In order to realize the recycling of water, it is necessary to For the treatment of wastewater containing sulfur dioxide, the existing treatment method is usually to add chemicals and precipitation and then filter. Although this method is simple and efficient, in the actual operation process, the mixing effect of wastewater and drugs is poor. When it is filtered, the filter screen is easily blocked, thus affecting the filtering effect.

Invention content:

The purpose of the present invention is to provide a filtration device for wastewater treatment based on sulfur dioxide and a method of using the same in order to solve the above problems, and solve the problems mentioned in the background art.

In order to solve the above-mentioned problems, the present invention provides a kind of technical scheme:

A filtration device for wastewater treatment based on sulfur dioxide, comprising a bottom plate, a sedimentation tank, a treatment tank, a material guide assembly, a filter screen, a scraper, a cleaning roller and a drive assembly, a sedimentation tank is fixedly connected to one side of the top of the bottom plate, and the bottom plate A treatment tank is fixedly connected at the top and located on one side of the sedimentation tank. A material guide assembly for pumping water is arranged between the treatment tank and the sedimentation tank. Slag collecting frames are symmetrically and fixedly connected on both sides of the inner wall of the treatment tank. A filter screen is fixedly connected between the slag collecting frames, a reciprocating screw rod is rotatably connected inside the treatment tank and above the filter screen, and a scraper is threadedly connected to the outside of the reciprocating screw rod. A rack is slidably connected to the lower part of the reciprocating screw rod, two ends of the rack are fixedly connected to both sides of the inner wall of the treatment tank, the bottom of the scraper is in contact with the top of the filter screen, and the outside of the scraper is symmetrically and fixedly connected There is a connecting plate, one side of the two connecting plates is rotatably connected with a first gear, the first gear is meshed with the rack, and the side of the first gear away from the connecting plate is fixedly connected with a cleaning roller, so A first stirring frame is rotatably connected inside the processing tank and located below the filter screen, and a second stirring frame is symmetrically connected to the inside of the processing tank and located on both sides of the first stirring frame. The reciprocating screw rod and the driving assembly for the rotation of the first stirring frame, an installation cavity is opened inside the treatment tank, and electric heating pipes are fixedly connected in the installation cavity at equal distances.

Preferably, both the sedimentation tank and the treatment tank are inlaid with visible glass.

Preferably, a discharge pipe is fixedly connected to the bottom of the sedimentation tank and the treatment tank, and a valve is provided outside the discharge pipe.

Preferably, the material guide assembly includes a vertical rod, a floating plate, a water pump and a shunt pipe, a vertical rod is fixedly connected between the top and the bottom of the inner wall of the sedimentation tank, and a floating plate is slidably connected to the outside of the vertical rod. A hose is fixedly connected inside the floating plate, and the bottom end of the hose extends to the bottom of the floating plate, a water pump is fixedly connected to the side of the treatment tank and close to the sedimentation tank, and the hose extends away from one end of the floating plate To the outside of the sedimentation tank and fixedly connected to the input end of the water pump, the top of the inner wall of the treatment tank is fixedly connected to a shunt pipe, the bottom of the shunt pipe is fixedly connected with a spray head at an equal distance, the output end of the water pump is fixedly connected with a conduit, the One end of the conduit away from the water pump extends into the treatment tank and is fixedly connected with the shunt pipe.

Preferably, a gear box is fixedly connected to the outside of the treatment tank and below the water pump, one end of the first stirring frame extends to the inside of the gear box and is fixedly connected with a second gear, and one end of the second stirring frame extends to the A third gear is fixedly connected inside the gear box, and both of the third gears are meshed with the second gear.

Preferably, the drive assembly includes a mounting frame, a motor, a driving pulley and a driven pulley, a mounting frame is fixedly connected to the side of the processing tank and away from the water pump, a motor is fixedly connected to the outside of the mounting frame, and the motor The output end runs through the mounting frame and is fixedly connected with the driving pulley, one end of the reciprocating screw extends to the outside of the processing tank and is fixedly connected with one side of the driving pulley, and the end of the first stirring frame away from the second gear extends to the processing A driven pulley is fixedly connected to the outside of the tank, and the driven pulley and the driving pulley are connected by a belt drive.

Preferably, a feed port is provided on the outside of the treatment tank and on the side away from the water pump.

Preferably, a control panel is fixedly connected to the outside of the processing tank and away from the feed port, and the valve, the water pump, the motor and the electric heating pipe are all electrically connected to the control panel.

A method of using a filter device for treating wastewater based on sulfur dioxide, comprising the following steps:

S1. When using this equipment, first introduce the waste water into the sedimentation tank for sedimentation treatment. At this time, the floating plate drives the hose to slide up outside the vertical rod. At this time, the water pump cooperates with the hose and the conduit to pump the water inside the sedimentation tank into the shunt pipe. At the same time, the water inside the shunt pipe is sprayed out through the nozzle. When the water passes through the filter screen, the impurities inside are filtered in the filter screen. At the top, as the water level inside the sedimentation tank drops, the floating plate drives the hose to move down outside the vertical rod. When the inside of the sedimentation tank is extracted, the valve at the bottom is opened, so that the impurities at the bottom are discharged through the discharge pipe, and then Turn off the water pump and refill the waste water into the sedimentation tank;

S2. The driving pulley is driven by the motor to rotate. At this time, the driving pulley drives the reciprocating screw to rotate. At this time, the scraper on the reciprocating screw slides between the outside and the rack. At the same time, the scraper drives the connecting plate and the rack. The first gear moves. During the movement of the first gear, it rotates at the top of the rack, thereby driving the cleaning roller to rotate. At this time, the cleaning roller cleans the impurities on the filter screen, and the cleaned impurities can be pushed into the filter by the scraper. Slag collecting boxes on both sides of the net;

S3. The driving pulley drives the driven pulley to rotate during the rotation. At this time, the driven pulley drives the first stirring frame to rotate, and the first stirring frame drives the second gear to follow the rotation during the rotation. At the same time, the second The gear drives the third gears on both sides to rotate, and the third gear drives the second stirring frame to rotate when it rotates. At this time, the first stirring frame and the second stirring frame rotate in the opposite direction inside the processing tank, and then pass through the feeding port. Sodium hydroxide is added into the treatment tank, and the sodium hydroxide reacts with the sulfur dioxide in the waste water to form sulfate, and the inside of the treatment tank can be heated by the electric heating tube inside the installation cavity, thereby removing the sulfate in the sulfur dioxide. , when the wastewater inside the treatment tank is treated, open the valve at the bottom of the tank to discharge the water inside the tank through the discharge pipe, and then the staff can clean the slag collecting box.

The beneficial effects of the invention are: compact structure, simple and convenient operation, strong practicability, the waste water inside the sedimentation tank can be drawn into the treatment tank through the material guide assembly, so as to facilitate its filtering, and the reciprocating screw rod can be driven through the driving assembly Rotating with the first stirring frame can not only improve the mixing effect of waste water and chemicals, but also make the scraper move back and forth on the filter screen under the cooperation of the reciprocating screw rod and the rack, so as to clean the filter screen, which is beneficial to Maintain the filtering effect of the filter.

Description of drawings:

For ease of description, the present invention is described in detail by the following specific implementations and accompanying drawings.

Fig. 1 is the front perspective view of the present invention;

Fig. 2 is the internal structure schematic diagram of the present invention;

Fig. 3 is the enlarged view of A place in Fig. 2;

FIG. 4 is an enlarged view of B in FIG. 2 .

In the figure: 1. Bottom plate; 2. Precipitation tank; 3. Treatment tank; 4. Visual glass; 5. Discharge pipe; 6. Valve; 7. Material guide assembly; 71. Vertical rod; 72. Floating plate; 73, Hose; 74, water pump; 75, shunt pipe; 76, nozzle; 77, conduit; 8, slag collecting frame; 9, filter screen; 10, reciprocating screw; 11, scraper; 12, rack; 13, connection plate; 14, first gear; 15, cleaning roller; 16, first stirring frame; 17, second stirring frame; 18, gear box; 19, second gear; 20, third gear; 21, drive assembly; 211 212, the motor; 213, the driving pulley; 214, the driven pulley; 22, the installation cavity; 23, the electric heating pipe; 24, the feeding port; 25, the control panel.

Detailed ways:

As shown in Figures 1-4, this specific implementation adopts the following technical solutions:

Example:

A filtration device for wastewater treatment based on sulfur dioxide, comprising a bottom plate 1, a sedimentation tank 2, a treatment tank 3, a material guide assembly 7, a filter screen 9, a scraper 11, a cleaning roller 15 and a drive assembly 21, and the top side of the bottom plate 1 is fixedly connected There is a precipitation tank 2, which can carry out a first-level precipitation treatment on the waste water, thereby preventing excessive impurities from entering the interior of the treatment tank 3. The top of the bottom plate 1 and located on one side of the precipitation tank 2 are fixedly connected with the treatment tank 3, and the treatment tank 3 and the precipitation tank 2 are fixedly connected. There is a material guide assembly 7 for pumping water in between, and a slag collecting frame 8 is symmetrically and fixedly connected on both sides of the inner wall of the treatment tank 3, which can collect impurities on the filter screen 9, thereby preventing impurities from accumulating on the filter screen 9. A filter screen 9 is fixedly connected between the slag collecting frames 8 to facilitate the filtering and treatment of waste water, so as to reduce impurities in the waste water. Inside the treatment tank 3 and above the filter screen 9, a reciprocating screw rod 10 is rotatably connected, and the reciprocating screw rod 10 A scraper 11 is threadedly connected to the outside, which can drive the scraper 11 to move back and forth on the filter screen 9, and manually push the impurities on the top into the slag collecting frame 8. The scraper 11 is inside and located below the reciprocating screw 10. A rack 12 is slidably connected to limit the position of the scraper 11 to prevent it from rotating. Both ends of the rack 12 are fixedly connected to both sides of the inner wall of the treatment tank 3 respectively. The top of the scraper 11 is connected with the connecting plate 13 symmetrically and fixedly. The two connecting plates 13 are connected with a first gear 14 in rotation on one side. The first gear 14 is engaged with the rack 12 and can drive the cleaning roller 15 to rotate. The cleaning roller 15 is fixedly connected to the side of the first gear 14 away from the connecting plate 13, which can clean the impurities on the filter screen 9, so as to facilitate the scraper 11 to process it. A first stirring frame 16 is rotatably connected below, and a second stirring frame 17 is rotatably connected to the inside of the treatment tank 3 and located on both sides of the first stirring frame 16, which can mix waste water, thereby improving its mixing effect with pharmaceuticals, treating The outside of the tank 3 is provided with a drive assembly 21 for driving the reciprocating screw rod 10 and the first stirring frame 16 to rotate. The inside of the treatment tank 3 is provided with an installation cavity 22, and the inside of the installation cavity 22 is fixedly connected with electric heating pipes 23 at equal distances, which can be used for wastewater treatment. heating, thereby reducing the sulfate radicals in it.

Among them, both the sedimentation tank 2 and the treatment tank 3 are inlaid with visible glass 4, which can observe the liquid level inside the sedimentation tank 2 and the treatment tank 3, so as to avoid the influence of the high liquid level on the operation of the equipment.

Wherein, the bottom of the sedimentation tank 2 and the treatment tank 3 are fixedly connected with a discharge pipe 5, and the outside of the discharge pipe 5 is provided with a valve 6 to facilitate the discharge of impurities and water in the sedimentation tank 2 and the treatment tank 3.

Wherein, the material guide assembly 7 includes a vertical rod 71, a floating plate 72, a water pump 74 and a shunt pipe 75, a vertical rod 71 is fixedly connected between the top and bottom of the inner wall of the sedimentation tank 2, and a floating plate 72 is slidably connected to the outside of the vertical rod 71. A hose 73 is fixedly connected inside the floating plate 72, which can drive the hose 73 to move up and down inside the sedimentation tank 2, so as to prevent impurities at the bottom of the sedimentation tank 2 from entering the treatment tank 3, and the bottom end of the hose 73 extends to the floating plate 72 At the bottom, a water pump 74 is fixedly connected to the side of the treatment tank 3 and close to the sedimentation tank 2. The end of the hose 73 away from the floating plate 72 extends to the outside of the sedimentation tank 2 and is fixedly connected to the input end of the water pump 74. The top is fixedly connected to the shunt pipe 75, and the bottom of the shunt pipe 75 is fixedly connected with a nozzle 76 at equal distances, which can evenly spray the water inside the shunt pipe 75, thereby facilitating subsequent filtering operations, and the output end of the water pump 74 is fixedly connected with a conduit 77, the conduit One end of 77 away from the water pump 74 extends to the inside of the treatment tank 3 and is fixedly connected with the shunt pipe 75 .

The gear box 18 is fixedly connected to the outside of the processing tank 3 and below the water pump 74 , one end of the first stirring frame 16 extends into the gear box 18 and is fixedly connected with the second gear 19 , and one end of the second stirring frame 17 extends to the A third gear 20 is fixedly connected inside the gear box 18, and the two third gears 20 are meshed and connected with the second gear 19, so that the first stirring frame 16 and the second stirring frame 17 can rotate in the opposite direction inside the processing tank 3, It is beneficial to improve the mixing effect of wastewater and chemicals.

The drive assembly 21 includes a mounting frame 211, a motor 212, a driving pulley 213 and a driven pulley 214. The mounting frame 211 is fixedly connected to the outside of the treatment tank 3 and away from the water pump 74, and the motor 212 is fixedly connected to the outside of the mounting frame 211. The output end of the motor 212 penetrates the mounting frame 211 and is fixedly connected with the driving pulley 213 , one end of the reciprocating screw 10 extends to the outside of the processing tank 3 and is fixedly connected with one side of the driving pulley 213 , and the first stirring frame 16 is far away from the second gear 19 One end of the pulley extends to the outside of the processing tank 3 and is fixedly connected with a driven pulley 214. The driven pulley 214 and the driving pulley 213 are connected by a belt drive, which can drive the reciprocating screw 10 and the first stirring frame 16 to rotate, thereby ensuring the equipment of normal operation.

Wherein, a feeding port 24 is opened on the side of the outside of the treatment tank 3 and away from the water pump 74 , so that the inside of the treatment tank 3 is convenient to put medicines.

Among them, the control panel 25 is fixedly connected to the side of the processing tank 3 and away from the feed port 24, and the valve 6, the water pump 74, the motor 212 and the electric heating pipe 23 are all electrically connected to the control panel 25, so that the equipment can be controlled centrally. So as to facilitate the staff to operate.

A method of using a filter device for treating wastewater based on sulfur dioxide, comprising the following steps:

S1. When using this equipment, first introduce the waste water into the sedimentation tank 2 for sedimentation treatment. At this time, the floating plate 72 drives the hose 73 to slide up outside the vertical rod 71. After the waste water in the sedimentation tank 2 is settled, the control The panel 25 starts the equipment. At this time, the water pump 74 cooperates with the hose 73 and the conduit 77 to pump the water inside the sedimentation tank 2 into the shunt pipe 75. At the same time, the water in the shunt pipe 75 is sprayed out through the nozzle 76. When the filter screen 9 is used, the impurities inside it are filtered on the top of the filter screen 9. As the water level in the sedimentation tank 2 drops, the floating plate 72 drives the hose 73 to move down outside the vertical rod 71. After completion, open the valve 6 at the bottom, thereby discharging the impurities at the bottom through the discharge pipe 5, then close the water pump 74, and pour the waste water into the sedimentation tank 2 again;

S2. The driving pulley 213 is driven to rotate by the motor 212. At this time, the driving pulley 213 drives the reciprocating screw 10 to rotate. At this time, the scraper 11 on the reciprocating screw 10 slides between the outside and the rack 12, and at the same time , the scraper 11 drives the connecting plate 13 and the first gear 14 to move, and the first gear 14 rotates on the top of the rack 12 during the movement, thereby driving the cleaning roller 15 to rotate. The impurities are cleaned, and the cleaned impurities can be pushed into the slag collecting frame 8 on both sides of the filter screen 9 by the scraper 11;

S3, the driving pulley 213 drives the driven pulley 214 to rotate during the rotation, at this time the driven pulley 214 drives the first stirring frame 16 to rotate, and the first stirring frame 16 drives the second gear 19 during the rotation to follow the rotation, At the same time, the second gear 19 drives the third gears 20 on both sides to rotate, and the third gear 20 drives the second stirring frame 17 to rotate when rotating. At this time, the first stirring frame 16 and the second stirring frame 17 are being processed. The inside of the tank 3 is reversely rotated, and then sodium hydroxide is added to the inside of the treatment tank 3 through the feeding port 24. At this time, the sodium hydroxide reacts with the sulfur dioxide in the waste water, thereby forming sulfate, through the electric heating tube inside the installation cavity 22. 23 The inside of the treatment tank 3 can be heated to remove the sulfate radicals in the sulfur dioxide. After the waste water in the treatment tank 3 is treated, the valve 6 at the bottom of the treatment tank 3 is opened, so that the water inside is discharged through the discharge pipe 5, and then The staff can clean the slag collecting frame 8 .

In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top" ", "inside", "front", "center", "both ends", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, only for the convenience of describing the present invention and simplifying the description, and It is not indicated or implied that the indicated device or element must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention.

In addition, the terms "first", "second", "third", "fourth" are only used for descriptive purposes and should not be understood as indicating or implying relative importance or implying the number of technical features indicated, Thus, features defined as "first", "second", "third", "fourth" may expressly or implicitly include at least one of such features.

In the present invention, unless otherwise expressly specified and limited, terms such as "installation", "arrangement", "connection", "fixation", "swivel connection" and other terms should be understood in a broad sense, for example, it may be a fixed connection, or It can be a detachable connection or an integrated body; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two elements or the interaction between the two elements. Unless otherwise clearly defined, those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

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

Claims (9)

1. A filter device for treating wastewater based on sulfur dioxide, characterized in that it comprises a bottom plate (1), a sedimentation tank (2), a treatment tank (3), a material guide assembly (7), a filter screen (9), a scraper ( 11), a cleaning roller (15) and a drive assembly (21), a sedimentation tank (2) is fixedly connected to one side of the top of the bottom plate (1), and the top of the bottom plate (1) is located on one side of the sedimentation tank (2) A treatment tank (3) is fixedly connected, a material guide assembly (7) for pumping water is arranged between the treatment tank (3) and the sedimentation tank (2), and both sides of the inner wall of the treatment tank (3) are symmetrically and fixedly connected There is a slag collecting frame (8), a filter screen (9) is fixedly connected between the two slag collecting frames (8), and a reciprocating connection is rotatably connected inside the treatment tank (3) and above the filter screen (9). A screw (10), a scraper (11) is threadedly connected to the outside of the reciprocating screw (10), and a rack (12) is slidably connected to the scraper (11) inside and below the reciprocating screw (10). , the two ends of the rack (12) are respectively fixedly connected to both sides of the inner wall of the treatment tank (3), the bottom of the scraper (11) is in contact with the top of the filter screen (9), the scraper (11) ) A connecting plate (13) is symmetrically and fixedly connected to the outside, a first gear (14) is rotatably connected to one side of the two connecting plates (13), and the first gear (14) is meshed with the rack (12). A cleaning roller (15) is fixedly connected to the side of the first gear (14) away from the connecting plate (13), and a first gear (14) is rotatably connected inside the treatment tank (3) and below the filter screen (9). A stirring frame (16), a second stirring frame (17) is symmetrically connected to the inside of the processing tank (3) and located on both sides of the first stirring frame (16), and a second stirring frame (17) is provided outside the processing tank (3) for driving The drive assembly (21) for the rotation of the reciprocating screw rod (10) and the first stirring frame (16), the processing tank (3) is provided with an installation cavity (22) inside, and the installation cavity (22) is fixedly connected at equal distances inside There are electric heating pipes (23). 2 . The filtration device for wastewater treatment based on sulfur dioxide according to claim 1 , wherein the settling tank ( 2 ) and the treatment tank ( 3 ) are both inlaid with visible glass ( 4 ). 3 . 3. A kind of filtration device based on sulfur dioxide waste water treatment according to claim 1, is characterized in that, described sedimentation tank (2) and treatment tank (3) bottom are all fixedly connected with discharge pipe (5), described discharge Valves (6) are arranged on the outside of the pipes (5). 4 . The filtration device for treating wastewater based on sulfur dioxide according to claim 1 , wherein the material guide assembly ( 7 ) comprises a vertical rod ( 71 ), a floating plate ( 72 ), a water pump ( 74 ) and a diverter. A pipe (75), a vertical rod (71) is fixedly connected between the top and bottom of the inner wall of the sedimentation tank (2), and a floating plate (72) is slidably connected to the outside of the vertical rod (71), and the floating plate ( 72) A hose (73) is fixedly connected inside, and the bottom end of the hose (73) extends to the bottom of the floating plate (72), and the processing tank (3) is outside and close to the side of the sedimentation tank (2) A water pump (74) is fixedly connected, and one end of the hose (73) away from the floating plate (72) extends to the outside of the sedimentation tank (2) and is fixedly connected with the input end of the water pump (74), the processing tank (3) The top of the inner wall is fixedly connected to the shunt pipe (75), the bottom of the shunt pipe (75) is fixedly connected with a spray head (76) at equal distances, the output end of the water pump (74) is fixedly connected with a conduit (77), and the conduit ( 77) One end away from the water pump (74) extends into the inside of the treatment tank (3) and is fixedly connected with the shunt pipe (75). 5. A filtration device for wastewater treatment based on sulfur dioxide according to claim 4, characterized in that a gear box (18) is fixedly connected outside the treatment tank (3) and below the water pump (74), and the One end of the first stirring frame (16) extends into the gear box (18) and is fixedly connected with a second gear (19), and one end of the second stirring frame (17) extends into the gear box (18) and is fixedly connected There is a third gear (20), and both of the third gears (20) are meshed with the second gear (19). 6 . The filtration device for wastewater treatment based on sulfur dioxide according to claim 4 , wherein the drive assembly ( 21 ) comprises a mounting frame ( 211 ), a motor ( 212 ), a driving pulley ( 213 ) and a driven A pulley (214), a mounting frame (211) is fixedly connected to the outside of the treatment tank (3) and away from the water pump (74), and a motor (212) is fixedly connected to the outside of the mounting frame (211), and the motor The output end of (212) penetrates the mounting frame (211) and is fixedly connected with the driving pulley (213), and one end of the reciprocating screw (10) extends to the outside of the processing tank (3) and is connected to one side of the driving pulley (213). Fixed connection, the end of the first stirring frame (16) away from the second gear (19) extends to the outside of the processing tank (3) and is fixedly connected with a driven pulley (214), the driven pulley (214) and the driving pulley (214) The pulleys (213) are connected by a belt drive. 7 . The filtration device for wastewater treatment based on sulfur dioxide according to claim 1 , wherein a feed port ( 24 ) is provided outside the treatment tank ( 3 ) and on the side away from the water pump ( 74 ). 8 . 8. A filtration device for wastewater treatment based on sulfur dioxide according to claim 3, characterized in that a control panel (25) is fixedly connected to the outside of the treatment tank (3) and away from the side of the feed port (24) , the valve (6), the water pump (74), the motor (212) and the electric heating pipe (23) are all electrically connected with the control panel (25). 9. A method of using a filter device for treating wastewater based on sulfur dioxide, based on any one of claims 1-8, characterized in that, comprising the following steps: S1. When using the equipment, first introduce the waste water into the sedimentation tank (2) for sedimentation treatment. At this time, the floating plate (72) drives the hose (73) to slide upward outside the vertical rod (71). When the sedimentation tank (2) After the waste water inside ) is settled, the equipment is started through the control panel (25), at this time, the water pump (74) cooperates with the hose (73) and the conduit (77) to pump the water inside the sedimentation tank (2) into the shunt pipe (75). ), at the same time, the water inside the shunt pipe (75) is sprayed out through the nozzle (76). When the water level inside the tank (2) drops, the floating plate (72) drives the hose (73) to move down outside the vertical rod (71). ), thereby the impurities at the bottom are discharged through the discharge pipe (5), then the water pump (74) is closed, and the waste water is poured into the sedimentation tank (2) again; S2. Drive the driving pulley (213) to rotate through the motor (212), at this time the driving pulley (213) drives the reciprocating screw (10) to rotate, and the scraper (11) on the reciprocating screw (10) is in its The outer part slides with the rack (12), and at the same time, the scraper (11) drives the connecting plate (13) and the first gear (14) to move, and the first gear (14) moves in the rack (14). 12) The top rotates to drive the cleaning roller (15) to rotate. At this time, the cleaning roller (15) cleans the impurities on the filter screen (9), and the cleaned impurities can be pushed into the filter screen by the scraper (11). (9) in the slag collecting frame (8) on both sides; S3. The driving pulley (213) drives the driven pulley (214) to rotate during the rotation, and at this time the driven pulley (214) drives the first stirring frame (16) to rotate, and the first stirring frame (16) is in the process of rotating At the same time, the second gear (19) drives the third gear (20) on both sides to rotate, and the third gear (20) drives the second stirring frame (20) when rotating. 17) Rotate, at this time, the first stirring frame (16) and the second stirring frame (17) rotate in the opposite direction inside the processing tank (3), and then add into the processing tank (3) through the feeding port (24). Sodium hydroxide, at this time, the sodium hydroxide reacts with the sulfur dioxide in the waste water to form sulfate, and the inside of the treatment tank (3) can be heated through the electric heating tube (23) inside the installation cavity (22), so that the sulfur dioxide in the sulfur dioxide can be heated. After the waste water in the treatment tank (3) is treated, the valve (6) at the bottom of the treatment tank (3) is opened, so that the water inside is discharged through the discharge pipe (5). ) to clean up.

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