Water purification and recovery device for adsorbing water pollutants by using nitrogen-doped biochar

Abstract

The invention provides a water purification and recovery device for adsorbing water pollutants by nitrogen-doped biochar, and relates to the field of recovery devices. The water purification and recovery device comprises a recovery device, a pretreatment device and a stirring device, the stirring device is arranged at the top end of the recovery device, the pretreatment device is arranged at the top end of the stirring device, and the recovery device comprises a shell. Drainage pipes are fixedly connected to the two sides of the inner side wall of the shell correspondingly, electric heating plates are fixedly connected to the two sides of the two nitrogen-doped biochar filter plates correspondingly, air pumps are fixedly connected to one sides of the top ends of the inner side walls of the two ventilation shells correspondingly, and one-way valves are fixedly connected to the inner side walls of the two drainage pipes correspondingly; the two sides of the top end of the inner side wall of the shell are fixedly connected with sliding rods correspondingly. By arranging the recovery device, pollutants in a water body are effectively adsorbed, by arranging the pretreatment device, the water body can be preliminarily filtered, and by arranging the stirring device, the treatment efficiency of the water body can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of recovery devices, and in particular to a water purification and recovery device for adsorbing water pollutants with nitrogen-doped biochar. Background Art

[0002] Nitrogen doping of biochar is a modification method that introduces nitrogen into biochar to enhance its adsorption and catalytic properties. Nitrogen doping can change the electronic structure of biochar and increase its surface active sites, thereby improving its adsorption capacity for pollutants. Specifically, nitrogen doping can enhance the interaction between biochar and pollutants, including electrostatic attraction, hydrogen bonding and chemical adsorption. In addition, nitrogen doping can also improve the catalytic activity of biochar, making it more effective in degrading organic pollutants in the advanced oxidation process.

[0003] Although the prior art recovers pollutants in water bodies through purification and recovery devices, the biochar cannot be recycled after use, resulting in a huge waste of resources. Therefore, technical personnel in this field provide a water purification and recovery device that uses nitrogen-doped biochar to adsorb water pollutants to solve the problems raised in the above background technology. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the shortcomings of the prior art, the present invention provides a water purification and recovery device for adsorbing water pollutants by nitrogen-doped biochar, which solves the problem that the biochar can be recycled and the water can be pretreated after the water circulation filtration is completed.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a water purification and recovery device for nitrogen-doped biochar to absorb water pollutants, comprising a recovery device, a pretreatment device and a stirring device, wherein the stirring device is arranged at the top of the recovery device, and the pretreatment device is arranged at the top of the stirring device. The recovery device comprises a shell, and drain pipes are fixedly connected to both sides of the inner wall of the shell, and purification boxes are fixedly connected to both sides of the shell, and two purification boxes are fixedly connected to ventilation shells on one side away from the shell, and two ventilation shells are fixedly connected to exhaust pipes on one side away from the shell, and the side walls of the two exhaust pipes are fixedly connected to the first valve, and the middle of the inner wall of the two purification boxes is fixedly connected to the nitrogen-doped biochar filter plate, and the two sides of the two nitrogen-doped biochar filter plates are fixedly connected to the electric heating plate, and the middle of the inner wall of the two ventilation shells is fixedly connected to the axial flow fan, and the top of the inner wall of the two ventilation shells is fixedly connected to the air pump, and the inner wall of the two drain pipes is fixedly connected to the check valve, and the two sides of the top of the inner wall of the shell are fixedly connected to the sliding rod.

[0008] Preferably: the pretreatment device includes a fixed plate, one side of the top of the two fixed plates is fixedly connected to a support rod, the other side of the top of the fixed plate is fixedly connected to a motor, the other side of the top of the support rod is rotatably connected to a rotating rod, the other end of the rotating rod is rotatably connected to a first movable frame, the side wall of the first movable frame is fixedly connected to a positioning plate, the top of the positioning plate is fixedly connected to a first rack, the rear end of the first rack is meshingly connected to a first gear, the middle part of the top of the first gear is fixedly connected to a limiting frame, the inner side wall of the limiting frame is slidably connected to a filter bucket, the side wall of the filter bucket has four limiting grooves in a circular array, and the fixed plate is fixedly connected to one side of the purification box on one side of the shell.

[0009] Preferably: the stirring device includes a second movable frame, a fixed frame is fixedly connected to the middle part of the bottom end of the second movable frame, a second gear is rotatably connected to the middle part of the top end of the fixed frame, the bottom end of the fixed frame is rotatably connected to the stirring shaft, the rear end of the second gear is meshingly connected to the second rack, the middle part of the top end of the second movable frame is fixedly connected to a mounting shell, the front and rear sides of the bottom end of the mounting shell are respectively fixedly connected to hoses, the other ends of the two hoses are respectively fixedly connected to connecting pipes, the side walls at both ends of the two connecting pipes are respectively fixedly connected to second valves, and the two sides of the second movable frame are slidably connected to two sliding rods respectively.

[0010] Preferably, one end of the two drainage pipes respectively penetrates through the inner wall of the shell and is connected to the interior of the purification box, and the two ventilation shells are respectively connected to the interior of the purification box.

[0011] Preferably: the four limit grooves are respectively matched with the inner side walls of the limit frame, the middle part of the bottom end of the rotating rod passes through the top end of the supporting rod and is connected to the output end of the motor through a belt, and the first movable frame is slidably connected to the side walls of the second movable frame at an upper position.

[0012] Preferably, the top end of the stirring shaft passes through the middle of the bottom end of the fixing frame and is fixedly connected to the middle of the bottom end of the second gear, and the two ends of the second rack are respectively fixedly connected to the front side and the rear side of the inner wall of the shell.

[0013] Preferably, the middle portion of the bottom end of the limiting frame passes through the middle portion of the bottom end of the inner side wall of the mounting shell and is fixedly connected to the middle portion of the top end of the first gear, and the first rack and the second rack are perpendicular to each other.

[0014] Preferably, one end of the two hoses is communicated with the interior of the installation shell respectively, and both ends of the two connecting pipes pass through the second valve respectively and are communicated with the interior of the two purification boxes.

[0015] Working principle: first, add sewage into the filter bucket 201, turn on the motor 204, and drive the rotating rod 205 to rotate through the motor 204, which can drive the first movable frame 206 to reciprocate. As the first movable frame 206 moves, the first rack 208 can be driven to move, so that the first gear 2010 rotates, and the sewage in the filter bucket 201 can be preliminarily filtered to filter out large pieces and water-insoluble impurities. At this time, the preliminarily filtered sewage enters the connecting pipe 303 through the hose 302, and the second valve 304 on one side of the shell 102 is closed, and the sewage will flow into the purification box 103 on the other side. The pollutants in the water body can be filtered through the nitrogen-doped biochar filter plate 108 in the purification box 103, and flow into the shell 102 through the drain pipe 1011. A flocculant is added to the shell 102, and through the lateral reciprocating motion of the second movable frame 305, the second gear 309 can be meshed and connected with the second rack 306 to rotate the stirring shaft 308, so as to achieve rapid stirring of the water body and quickly merge the flocculant with the water body. After the purification box 103 on one side of the shell 102 has been used for a period of time, the second valve 304 on one side is closed and the second valve 304 on the other side is opened, and the electric heating plate 107 is turned on to heat the nitrogen-doped biochar filter plate 108, and inert gas is filled into the purification box 103 through the air pump 1010, and the exhaust gas generated by the heating of the nitrogen-doped biochar filter plate 108 is discharged through the ventilation shell 106. After heating for a period of time, the electric heating plate 107 is turned off, and the nitrogen-doped biochar filter plate 108 can be used again after cooling.

[0016] (III) Beneficial effects

[0017] The invention provides a water purification and recovery device using nitrogen-doped biochar to adsorb water pollutants.

[0018] It has the following beneficial effects:

[0019] 1. By setting up a recovery device, the sewage after preliminary filtration enters the connecting pipe through a hose. After closing the second valve on one side of the shell, the sewage will flow into the purification box on the other side. The pollutants in the water body can be filtered through the nitrogen-doped biochar filter plate in the purification box, and the pollutants in the water body can be effectively adsorbed.

[0020] 2. By setting up a pretreatment device, adding sewage into the filter bucket, turning on the motor, and driving the rotating rod to rotate through the motor, the first movable frame can be driven to reciprocate. As the first movable frame moves, the first rack can be driven to move, thereby causing the first gear to rotate, and the sewage in the filter bucket can be preliminarily filtered to filter out large pieces and water-insoluble impurities, and the water body can be preliminarily filtered.

[0021] 3. By setting up a stirring device and flowing into the shell through a drain pipe, flocculant is added into the shell. Through the lateral reciprocating motion of the second movable frame, the second gear can be meshed and connected with the second rack to rotate the stirring shaft, thereby realizing rapid stirring of the water body, making the flocculant and the water body merge quickly, and improving the treatment efficiency of the water body.

[0022] 4. After using the purification box on one side of the shell with electric heating plates on both sides of the nitrogen-doped biochar filter plate for a period of time, close the second valve on one side and open the second valve on the other side, and turn on the electric heating plate to heat the nitrogen-doped biochar filter plate, and fill the purification box with inert gas through an air pump, and discharge the exhaust gas generated by heating the nitrogen-doped biochar filter plate through the ventilation shell. After heating for a period of time, turn off the electric heating plate, and after the nitrogen-doped biochar filter plate is cooled, it can be used again, and the pollutants adsorbed on the surface of the biochar are decomposed or volatilized by high-temperature pyrolysis, thereby restoring the adsorption performance of the biochar and effectively realizing recycling. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the present invention;

[0024] Figure 2 It is a structural schematic diagram of the pretreatment device of the present invention;

[0025] Figure 3 It is a structural schematic diagram of the stirring device of the present invention;

[0026] Figure 4 It is a schematic diagram of the cross-sectional structure of the present invention;

[0027] Figure 5 It is a side view structural schematic diagram of the present invention;

[0028] Figure 6It is a front view structural schematic diagram of the stirring device of the present invention.

[0029] Among them, 1. Recovery device; 101. Sliding rod; 102. Shell; 103. Purification box; 104. Exhaust pipe; 105. First valve; 106. Ventilation shell; 107. Electric heating plate; 108. Nitrogen-doped biochar filter plate; 109. Axial fan; 1010. Air pump; 1011. Drain pipe; 1012. One-way valve; 2. Pretreatment device; 201. Filter bucket; 202. Fixing plate; 203. Support rod; 204. Motor; 205, rotating rod; 206, first movable frame; 207, positioning plate; 208, first rack; 209, limiting frame; 2010, first gear; 2011, limiting groove; 3, stirring device; 301, mounting shell; 302, hose; 303, connecting pipe; 304, second valve; 305, second movable frame; 306, second rack; 307, fixed frame; 308, stirring shaft; 309, second gear. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0031] Embodiment 1:

[0032] like Figure 1-6As shown, an embodiment of the present invention provides a water purification and recovery device for nitrogen-doped biochar to adsorb water pollutants, including a recovery device 1, a pretreatment device 2 and a stirring device 3, wherein the stirring device 3 is arranged at the top of the recovery device 1, and the pretreatment device 2 is arranged at the top of the stirring device 3. The recovery device 1 includes a shell 102, and drain pipes 1011 are fixedly connected to both sides of the inner wall of the shell 102, and purification boxes 103 are fixedly connected to both sides of the shell 102. Two purification boxes 103 are fixedly connected to ventilation shells 106 on one side of the shell 102, and the two ventilation shells 106 are fixedly connected to exhaust pipes 104 on the side away from the shell 102. The side walls of the two exhaust pipes 104 are fixedly connected to first valves 105, and the middle of the inner walls of the two purification boxes 103 are fixedly connected to nitrogen-doped biochar filter plates. 108, electric heating plates 107 are fixedly connected to both sides of the two nitrogen-doped biochar filter plates 108, axial flow fans 109 are fixedly connected to the middle of the inner walls of the two ventilation shells 106, air pumps 1010 are fixedly connected to one side of the top of the inner walls of the two ventilation shells 106, one-way valves 1012 are fixedly connected to the inner walls of the two drain pipes 1011, and sliding rods 101 are fixedly connected to both sides of the top of the inner wall of the shell 102. By setting up the recovery device 1, the sewage after preliminary filtration enters the connecting pipe 303 through the hose 302, and the second valve 304 on one side of the shell 102 is closed, and the sewage will flow into the purification box 103 on the other side. The pollutants in the water body can be filtered through the nitrogen-doped biochar filter plate 108 in the purification box 103, and the pollutants in the water body can be effectively adsorbed.

[0033] The pretreatment device 2 includes a fixed plate 202, one side of the top of the two fixed plates 202 is fixedly connected to a support rod 203, the other side of the top of the fixed plate 202 is fixedly connected to a motor 204, the other side of the top of the support rod 203 is rotatably connected to a rotating rod 205, the other end of the rotating rod 205 is rotatably connected to a first movable frame 206, the side wall of the first movable frame 206 is fixedly connected to a positioning plate 207, the top of the positioning plate 207 is fixedly connected to a first rack 208, the rear end of the first rack 208 is meshedly connected to a first gear 2010, the middle part of the top of the first gear 2010 is fixedly connected to a limiting frame 209, and the inner side wall of the limiting frame 209 is slidably connected to a filter bucket 20 1. The side wall of the filter bucket 201 is in a circular array with four limit grooves 2011. The fixed plate 202 is fixedly connected to one side of the purification box 103 on one side of the shell 102. By setting the pretreatment device 2, sewage is added to the filter bucket 201, and the motor 204 is turned on. The motor 204 drives the rotating rod 205 to rotate, which can drive the first movable frame 206 to reciprocate. With the movement of the first movable frame 206, the first rack 208 can be driven to move, so that the first gear 2010 rotates, and the sewage in the filter bucket 201 can be preliminarily filtered to filter large blocks and water-insoluble impurities therein, and the water body can be preliminarily filtered.

[0034] The stirring device 3 includes a second movable frame 305, a fixed frame 307 is fixedly connected to the middle of the bottom end of the second movable frame 305, a second gear 309 is rotatably connected to the middle of the top end of the fixed frame 307, the bottom end of the fixed frame 307 is rotatably connected to the stirring shaft 308, the rear end of the second gear 309 is meshedly connected to the second rack 306, the middle of the top end of the second movable frame 305 is fixedly connected to the mounting shell 301, the bottom end of the mounting shell 301 is fixedly connected to the front side and the rear side respectively, the other ends of the two hoses 302 are fixedly connected to the connecting pipe 303 respectively, and the two The side walls at both ends of the connecting pipe 303 are respectively fixedly connected with the second valve 304, and the two sides of the second movable frame 305 are respectively slidably connected with the two sliding rods 101. By setting a stirring device 3 and flowing into the shell 102 through the drain pipe 1011, flocculant is added to the shell 102. Through the lateral reciprocating motion of the second movable frame 305, the second gear 309 can be meshed and connected with the second rack 306, so that the stirring shaft 308 rotates, thereby realizing rapid stirring of the water body, allowing the flocculant to quickly merge with the water body, and improving the treatment efficiency of the water body.

[0035] One end of the two drainage pipes 1011 passes through the inner wall of the shell 102 and is connected to the inside of the purification box 103, the two ventilation shells 106 are connected to the inside of the purification box 103, the four limit grooves 2011 are respectively adapted to the inner wall of the limit frame 209, the middle part of the bottom end of the rotating rod 205 passes through the top of the support rod 203 and is connected to the output end of the motor 204 through a belt, the first movable frame 206 is slidably connected to the upper position of the side wall of the second movable frame 305, the top end of the stirring shaft 308 passes through the middle part of the bottom end of the fixed frame 307 and is fixedly connected to the middle part of the bottom end of the second gear 309, the two ends of the second rack 306 are respectively fixedly connected to the front and rear sides of the inner wall of the shell 102, the middle part of the bottom end of the limit frame 209 passes through the middle part of the bottom end of the inner wall of the installation shell 301 and is fixedly connected to the middle part of the top end of the first gear 2010, the first rack 208 and the second rack 306 are perpendicular to each other, and one end of the two hoses 302 is respectively connected to the installation shell 301. The interior of the shell 301 is connected, and the two ends of the two connecting pipes 303 pass through the second valve 304 and are connected to the interior of the two purification boxes 103. After the purification box 103 on one side of the shell 102 is used for a period of time, the second valve 304 on one side is closed and the second valve 304 on the other side is opened, and the electric heating plate 107 is opened to heat the nitrogen-doped biochar filter plate 108, and inert gas is filled into the purification box 103 through the air pump 1010, and the exhaust gas generated by the heating of the nitrogen-doped biochar filter plate 108 is discharged through the ventilation shell 106. After heating for a period of time, the electric heating plate 107 is closed. After the nitrogen-doped biochar filter plate 108 is cooled, it can be used again. The pollutants adsorbed on the surface of the biochar are decomposed or volatilized by high-temperature pyrolysis, thereby restoring the adsorption performance of the biochar, and effectively realizing recycling.

[0036] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A water purification and recovery device for nitrogen-doped biochar to adsorb water pollutants, comprising a recovery device (1), a pretreatment device (2) and a stirring device (3), wherein the stirring device (3) is arranged at the top of the recovery device (1), and the pretreatment device (2) is arranged at the top of the stirring device (3), characterized in that: The recovery device (1) comprises a shell (102), the inner side walls of the shell (102) are respectively fixedly connected with drainage pipes (1011), the two sides of the shell (102) are respectively fixedly connected with purification boxes (103), the two purification boxes (103) are respectively fixedly connected with ventilation shells (106) on one side of the shell (102), the two ventilation shells (106) are respectively fixedly connected with exhaust pipes (104) on the sides away from the shell (102), the side walls of the two exhaust pipes (104) are respectively fixedly connected with first valves (105), and the two purification boxes (103) are respectively fixedly connected with ventilation shells (106) on one side of the shell (102). ) are fixedly connected to the middle of the inner wall of each of the two nitrogen-doped biochar filter plates (108), and electric heating plates (107) are fixedly connected to both sides of the two nitrogen-doped biochar filter plates (108). Axial fans (109) are fixedly connected to the middle of the inner wall of each of the two ventilation shells (106), and air pumps (1010) are fixedly connected to one side of the top of the inner wall of each of the two ventilation shells (106). One-way valves (1012) are fixedly connected to the inner walls of the two drainage pipes (1011), and sliding rods (101) are fixedly connected to both sides of the top of the inner wall of the shell (102).

2. The water purification and recovery device for adsorbing water pollutants by nitrogen-doped biochar according to claim 1 is characterized by: The pretreatment device (2) comprises a fixed plate (202), one side of the top of the two fixed plates (202) is fixedly connected to a support rod (203), the other side of the top of the fixed plate (202) is fixedly connected to a motor (204), the other side of the top of the support rod (203) is rotatably connected to a rotating rod (205), the other end of the rotating rod (205) is rotatably connected to a first movable frame (206), the side wall of the first movable frame (206) is fixedly connected to a positioning plate (207), the positioning plate (207) A first rack (208) is fixedly connected to the top, and a first gear (2010) is meshedly connected to the rear end of the first rack (208), and a limiting frame (209) is fixedly connected to the middle of the top of the first gear (2010), and a filter bucket (201) is slidably connected to the inner wall of the limiting frame (209), and the side wall of the filter bucket (201) has four limiting grooves (2011) in a circular array, and the fixed plate (202) is fixedly connected to one side of the purification box (103) on one side of the shell (102).

3. The water purification and recovery device for adsorbing water pollutants by nitrogen-doped biochar according to claim 1 is characterized by: The stirring device (3) comprises a second movable frame (305), wherein the middle part of the bottom end of the second movable frame (305) is fixedly connected to a fixed frame (307), the middle part of the top end of the fixed frame (307) is rotatably connected to a second gear (309), the bottom end of the fixed frame (307) is rotatably connected to a stirring shaft (308), the rear end of the second gear (309) is meshingly connected to a second rack (306), the middle part of the top end of the second movable frame (305) is fixedly connected to a mounting shell (301), the front side and the rear side of the bottom end of the mounting shell (301) are respectively fixedly connected to hoses (302), the other ends of the two hoses (302) are respectively fixedly connected to connecting pipes (303), the side walls at both ends of the two connecting pipes (303) are respectively fixedly connected to second valves (304), and the two sides of the second movable frame (305) are respectively slidably connected to two sliding rods (101).

4. The water purification and recovery device for adsorbing water pollutants by nitrogen-doped biochar according to claim 1 is characterized by: One end of the two drainage pipes (1011) respectively penetrates the inner wall of the shell (102) and is connected to the interior of the purification box (103), and the two ventilation shells (106) are respectively connected to the interior of the purification box (103).

5. The water purification and recovery device for adsorbing water pollutants by nitrogen-doped biochar according to claim 2, characterized in that: The four limiting grooves (2011) are respectively adapted to the inner side walls of the limiting frame (209); the middle part of the bottom end of the rotating rod (205) passes through the top end of the supporting rod (203) and is connected to the output end of the motor (204) via a belt; the first moving frame (206) is slidably connected to the side walls of the second moving frame (305) at an upper position.

6. The water purification and recovery device for adsorbing water pollutants by nitrogen-doped biochar according to claim 3 is characterized by: The top end of the stirring shaft (308) passes through the middle of the bottom end of the fixing frame (307) and is fixedly connected to the middle of the bottom end of the second gear (309); the two ends of the second rack (306) are respectively fixedly connected to the front side and the rear side of the inner wall of the shell (102).

7. The water purification and recovery device for adsorbing water pollutants by nitrogen-doped biochar according to claim 2 is characterized by: The middle part of the bottom end of the limiting frame (209) passes through the middle part of the bottom end of the inner wall of the mounting shell (301) and is fixedly connected to the middle part of the top end of the first gear (2010), and the first rack (208) and the second rack (306) are perpendicular to each other.

8. The water purification and recovery device for adsorbing water pollutants by nitrogen-doped biochar according to claim 3 is characterized by: One end of the two hoses (302) is respectively connected to the interior of the installation shell (301), and both ends of the two connecting pipes (303) pass through the second valve (304) and are connected to the interior of the two purification boxes (103).

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