Waste water defluorination equipment capable of recycling adsorbent

Abstract

The invention discloses waste water defluorination equipment for recycling adsorbent, and belongs to the technical field of waste water treatment.The waste water defluorination equipment comprises a main water inlet pipe, the front end of the main water inlet pipe is externally connected with a waste water source, a plurality of branch pipes are arranged on the right side of the main water inlet pipe, and the right ends of the branch pipes communicate with waste water defluorination equipment; a supporting frame is fixedly connected to the bottom of the wastewater defluorination equipment, a guiding device is arranged at the top of the wastewater defluorination equipment, a plurality of adsorption devices are fixedly connected to the lower portion in the guiding device, a water accumulation tank is arranged on the right side of the wastewater defluorination equipment, a water suction pump is fixedly connected to the interior of the water accumulation tank, and a water drainage main pipe is arranged on the right side of the water accumulation tank; the left end of the main drainage pipe is communicated with a water outlet of the water suction pump; the method is high in removal efficiency of fluorine ions in the water body, good in removal effect and free of new pollutants, and the water body fluorine removal cost can also be reduced through recycling of the adsorbent.

Description

Technical Field

[0001] The invention relates to the technical field of wastewater treatment, and in particular to a wastewater defluorination device with cyclic recycling of adsorbent. Background Art

[0002] Fluoride-containing wastewater is a type of wastewater with high concentrations of fluoride ions produced during industrial production. If it is discharged directly without treatment, it will cause serious harm to the environment and human health.

[0003] Fluoride is one of the essential trace elements for the human body, but excessive intake can cause a series of health problems. The most direct impact of long-term drinking of high-fluoride water is dental health, which manifests as fluorosis, that is, chalky plaques appear on the surface of teeth, and in severe cases, it can even cause tooth loss. More seriously, after fluoride enters the human body, it will combine with calcium ions in the bones to form calcium fluoride, which affects the normal structure and function of bones and increases the risk of osteoporosis and fractures. Especially for children and the elderly, due to immature bone development or reduced bone density, they are more vulnerable to the harm of fluoride pollution.

[0004] The cost of removing fluoride ions from water by adsorbing fluoride ions in fluoride-containing wastewater with an adsorbent is relatively low. In existing wastewater defluorination equipment, the cost of replacing the adsorbent is relatively high. Therefore, a wastewater defluorination equipment that recycles and regenerates the adsorbent is needed. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a wastewater defluorination device with recycled adsorbent.

[0006] The technical scheme of the present invention is: a wastewater defluorination device for recycling and reusing adsorbents, comprising a main water inlet pipe, the front end of the main water inlet pipe is externally connected to a wastewater source, a plurality of branch pipes are arranged on the right side of the main water inlet pipe, the right ends of the plurality of branch pipes are all connected to the wastewater defluorination device, a support frame is fixedly connected to the bottom of the wastewater defluorination device, a guide device is arranged on the top of the wastewater defluorination device, a plurality of adsorption devices are fixedly connected to the lower part of the guide device, a water sump is arranged on the right side of the wastewater defluorination device, a water pump is fixedly connected to the water sump, a drainage main pipe is arranged on the right side of the water sump, and the left end of the drainage main pipe is connected to the water outlet of the water pump;

[0007] The wastewater defluorination equipment comprises a plurality of wastewater defluorination channels, both sides of which are fixedly connected with desorption equipment, the tops of the plurality of wastewater defluorination channels and the tops of the desorption equipment are provided with insertion ports, and the adsorption device is plug-connected in the insertion ports.

[0008] Furthermore, the adsorption device includes a top plate, an adsorbent mechanism is fixedly connected below the top plate, and a sealing ring is provided below the outer side of the top plate.

[0009] Note: The sealing ring is used to make the top plate close to the wastewater defluorination channel to prevent water in the wastewater defluorination channel from overflowing from the insertion port.

[0010] Furthermore, the adsorbent mechanism comprises a plurality of vertical activated alumina plates, and the tops of the plurality of vertical activated alumina plates are fixedly connected to the top plate.

[0011] Description: This adsorbent mechanism helps to improve the thermal desorption efficiency of vertical activated alumina plates.

[0012] Furthermore, the adsorbent mechanism comprises a filling basket, the top of which is fixedly connected to the top plate, and the filling basket is filled with adsorbent particles.

[0013] Description: This adsorbent structure has a large surface area and good adsorption effect.

[0014] Furthermore, the desorption equipment includes a refractory channel, a scrubbing tank is fixedly connected to the right side of the refractory channel, a microporous aeration pipe is fixedly connected in the scrubbing tank, the left end of the microporous aeration pipe is connected to the refractory channel, a gas nozzle is provided at the right end of the microporous aeration pipe and the left end of the refractory channel, and an electronic igniter is fixedly connected to the top of the refractory channel.

[0015] Description: The fluoride on the surface of the attachment mechanism 62 is sublimated to form gas by high temperature, and the gas containing fluorine ions is cooled and condensed in the washing tank to form solid precipitates or dissolved in the washing tank.

[0016] Furthermore, the gas nozzle includes a cylindrical block, in which a through-hole tube 1 and a through-hole tube 2 are provided, and the right sides of the through-hole tube 1 and the through-hole tube 2 are respectively inserted and fixedly connected with a metal conduit 1 and a metal conduit 2, and the outer walls of the metal conduit 1 and the metal conduit 2 are respectively electrically connected to the positive pole and the negative pole of the electronic igniter.

[0017] Description: The left ends of through-hole tube 1 and through-hole tube 2 are connected to fuel gas and air respectively. The fuel gas and air are ignited in the refractory channel to generate high temperature, which sublimates the pollutants on the surface of the adsorbent mechanism and restores the adsorption capacity of the adsorbent mechanism.

[0018] Furthermore, the guide device includes a fixed crossbeam, a plurality of connecting rods are fixedly connected below the fixed crossbeam, a lifting mechanism is fixedly connected below both front and rear ends of the fixed crossbeam, the lifting mechanism includes a pneumatic rod, the top of the pneumatic rod is fixedly connected to the fixed crossbeam, the bottom of the pneumatic rod is fixedly connected to a slider, and the slider is slidably connected to the base through a screw mechanism.

[0019] Description: Insert the adsorption device into the insertion port through the pneumatic rod, and move the guide device back and forth alternately. Insert the adsorption device with adsorption capacity into the wastewater defluorination equipment, and insert the adsorption device for adsorbing pollutants into the refractory channel for thermal desorption.

[0020] Furthermore, the screw mechanism includes a transmission rod, which is transmission-connected to the slider screw, and the front and rear ends of the transmission rod are rotationally connected to the base, and the outer side wall of the base is fixedly connected with a transmission motor for driving the transmission rod to rotate.

[0021] Description: The fixed beam is moved forward and backward through the screw mechanism.

[0022] Furthermore, an electronic main valve is provided on the main water inlet pipe, an electronic regulating valve is provided on the branch pipe, a PLC controller is fixedly connected to the outer wall of the main water inlet pipe, and the PLC controller is electrically connected to the electronic main valve, electronic regulating valve, desorption equipment, water pump, and guide device respectively.

[0023] Note: Since the water pressure of the front and rear branches is different, it is necessary to adjust it through an electronic regulating valve to make the flow rate of each branch consistent. When the guide device is working, the water flow needs to be cut off by the electronic main valve, and automatic control is achieved through the PLC controller.

[0024] The beneficial effects of the present invention are:

[0025] The present invention adsorbs fluoride ions in water by an adsorbent, thereby reducing the fluoride ion content in the water, desorbs pollutants adsorbed on the surface of the adsorbent by thermal desorption, and then purifies the tail gas by a gas washing tank. The present invention has high removal efficiency and good removal effect for fluoride ions in water, and will not introduce new pollutants. The recycling of the adsorbent can also reduce the cost of defluoridation of water. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the present invention.

[0027] Figure 2 It is a structural schematic diagram of the desorption equipment of the present invention.

[0028] Figure 3 It is a sectional left view of the adsorbent mechanism in Example 1 of the present invention.

[0029] Figure 4 It is a sectional left view of the adsorbent mechanism in Example 2 of the present invention.

[0030] Figure 5 It is a structural left view of the guide device of the present invention.

[0031] Among them, 1-main water inlet pipe, 2-branch pipe, 3-wastewater defluorination equipment, 4-support frame, 5-guide device, 6-adsorption device, 7-water tank, 8-water pump, 9-drainage main pipe, 31-wastewater defluorination channel, 32-desorption equipment, 33-insertion port, 61-top plate, 62-adsorbent mechanism, 63-sealing ring, 621-vertical activated alumina plate, 622-filling basket, 321-refractory channel, 322-washing tank, 323-microporous aeration pipe, 32 4-gas nozzle, 325-electronic igniter, 3241-column block, 3242-through hole tube 1, 3243-through hole tube 2, 3244-metal conduit 1, 3245-metal conduit 2, 51-fixed beam, 52-connecting rod, 53-lifting mechanism, 531-gas pressure rod, 532-slider, 533-screw mechanism, 5331-transmission rod, 5332-transmission motor, 11-electronic main valve, 12-electronic regulating valve, 13-PLC controller. DETAILED DESCRIPTION

[0032] Embodiment 1:

[0033] like Figure 1 As shown, a wastewater defluorination device for recycling and reusing an adsorbent comprises a main water inlet pipe 1, the front end of the main water inlet pipe 1 is externally connected to a wastewater source, a plurality of branch pipes 2 are arranged on the right side of the main water inlet pipe 1, the right ends of the plurality of branch pipes 2 are all connected to a wastewater defluorination device 3, a support frame 4 is fixedly connected to the bottom of the wastewater defluorination device 3, a guide device 5 is arranged on the top of the wastewater defluorination device 3, a plurality of adsorption devices 6 are fixedly connected to the lower part of the guide device 5, a water storage tank 7 is arranged on the right side of the wastewater defluorination device 3, a water pump 8 is fixedly connected to the water storage tank 7, a drainage main pipe 9 is arranged on the right side of the water storage tank 7, and the left end of the drainage main pipe 9 is connected to the water outlet of the water pump 8;

[0034] The wastewater defluorination equipment 3 includes multiple wastewater defluorination channels 31, and desorption equipment 32 is fixedly connected to both sides of the multiple wastewater defluorination channels 31. The tops of the multiple wastewater defluorination channels 31 and the tops of the desorption equipment 32 are both provided with insertion ports 33, and the adsorption device 6 is inserted and connected in the insertion ports 33.

[0035] The adsorption device 6 comprises a top plate 61 , an adsorbent mechanism 62 is fixedly connected below the top plate 61 , and a sealing ring 63 is provided below the outer side of the top plate 61 .

[0036] The top plate 61 is closely attached to the wastewater defluorination channel 31 through the sealing ring 63 , so as to prevent the water in the wastewater defluorination channel 31 from overflowing from the insertion port 33 .

[0037] like Figure 3 As shown, the adsorbent mechanism 62 includes a plurality of vertical activated alumina plates 621 , and the tops of the plurality of vertical activated alumina plates 621 are fixedly connected to the top plate 61 .

[0038] This adsorbent mechanism 62 helps to improve the thermal desorption efficiency of the vertical activated alumina plate 621.

[0039] like Figure 2 As shown, the desorption equipment 32 includes a refractory channel 321, a scrubbing tank 322 is fixedly connected to the right side of the refractory channel 321, a microporous aeration pipe 323 is fixedly connected inside the scrubbing tank 322, the left end of the microporous aeration pipe 323 is connected to the refractory channel 321, a gas nozzle 324 is provided at the right end of the microporous aeration pipe 323 and the left end of the refractory channel 321, and an electronic igniter 325 is fixedly connected to the top of the refractory channel 321.

[0040] The fluoride on the surface of the attachment mechanism 62 is sublimated to form gas by high temperature, and the gas containing fluorine ions is cooled and condensed in the washing tank 322 to form solid precipitates or dissolved in the washing tank 322.

[0041] The gas nozzle 324 includes a cylindrical block 3241, in which a through-hole tube 1 3242 and a through-hole tube 2 3243 are provided, and the right sides of the through-hole tube 1 3242 and the through-hole tube 2 3243 are respectively inserted and fixedly connected with a metal conduit 1 3244 and a metal conduit 2 3245, and the outer walls of the metal conduit 1 3244 and the metal conduit 2 3245 are respectively electrically connected to the positive and negative poles of the electronic igniter 325.

[0042] The left ends of through-hole pipe 1 3242 and through-hole pipe 2 3243 are connected to fuel gas and air respectively. The fuel gas and air are ignited in the fire-resistant channel 321 to generate high temperature, so that the pollutants on the surface of the adsorbent mechanism 62 are sublimated, and the adsorption of the adsorbent mechanism 62 is restored.

[0043] like Figure 5 As shown, the guide device 5 includes a fixed crossbeam 51, a plurality of connecting rods 52 are fixedly connected below the fixed crossbeam 51, a lifting mechanism 53 is fixedly connected below the front and rear ends of the fixed crossbeam 51, the lifting mechanism 53 includes a pneumatic rod 531, the top of the pneumatic rod 531 is fixedly connected to the fixed crossbeam 51, the bottom of the pneumatic rod 531 is fixedly connected to a slider 532, and the slider 532 is slidably connected to a base 534 through a screw mechanism 533.

[0044] The adsorption device 6 is inserted into the insertion port 33 through the gas pressure rod 531, and the guide device moves back and forth alternately, and the adsorption device 6 with adsorption capacity is inserted into the wastewater defluorination equipment 3, and the adsorption device 6 that adsorbs pollutants is inserted into the refractory channel 31 for thermal desorption.

[0045] The screw mechanism 533 includes a transmission rod 5331, which is screw-connected to the slider 532. Both the front and rear ends of the transmission rod 5331 are rotatably connected to the base 534. The outer wall of the base 534 is fixedly connected with a transmission motor 5332 for driving the transmission rod 5331 to rotate.

[0046] The fixed crossbeam 51 is moved forward and backward by the screw mechanism 533 .

[0047] Embodiment 2:

[0048] The difference between this embodiment and embodiment 1 is that Figure 4 As shown, the adsorbent mechanism 62 includes a filling basket 622 , the top of which is fixedly connected to the top plate 61 , and the filling basket 622 is filled with adsorbent particles.

[0049] Compared with Example 1, the adsorbent in the adsorbent mechanism 62 of this embodiment has a large surface area and a good adsorption effect.

[0050] Embodiment 3:

[0051] The difference between this embodiment and embodiment 1 is that an electronic main valve 11 is provided on the main water inlet pipe 1, an electronic regulating valve 12 is provided on the branch pipe 2, and a PLC controller 13 is fixedly connected to the outer wall of the main water inlet pipe 1, and the PLC controller 13 is electrically connected to the electronic main valve 11, the electronic regulating valve 12, the desorption equipment 32, the water pump 8, and the guide device 5 respectively.

[0052] Compared with Example 1, since the water pressure of the front and rear branches 2 is different, this embodiment needs to be adjusted by the electronic regulating valve 12 to make the flow rate of each branch 2 consistent. When the guide device 5 is working, the water flow needs to be cut off by the electronic main valve 11, and automatic control is achieved through the PLC controller 13.

[0053] The working method of the wastewater defluorination equipment with adsorbent recycling in the above embodiment 3 comprises the following steps:

[0054] S1, water enters through the water inlet main pipe 1, and then is evenly distributed to the branch pipe 2. When the water flows through the wastewater defluorination channel 31, the adsorbent mechanism 62 on the adsorption device 6 adsorbs the fluoride ions in the water;

[0055] S2. After the adsorption capacity of the adsorbent mechanism 62 decreases, the electronic main valve 11 is closed, and the adsorption device 6 is taken out from the wastewater defluorination channel 31 through the lifting mechanism 53, and then the fixed crossbeam 51 is driven to move back and forth alternately through the screw mechanism 533, so that the adsorption device 6 in the refractory channel 321 is inserted into the wastewater defluorination channel 31 to adsorb fluoride ions in the water body in the wastewater defluorination channel 31;

[0056] S3, the left ends of through-hole pipe 1 3242 and through-hole pipe 2 3243 are connected to fuel gas and air respectively. The fuel gas and air are ignited in the refractory channel 321 to generate high temperature, so that the pollutants on the surface of the adsorbent mechanism 62 are sublimated, and the adsorption property of the adsorbent mechanism 62 is restored. The tail gas enters the scrubbing tank 322, and the gas containing fluorine ions is cooled and condensed in the scrubbing tank 322 to form a solid precipitate or dissolved in the scrubbing tank 322.

[0057] The water pump 8, microporous aeration tube 323, vertical activated alumina plate 621, pneumatic rod 531, transmission motor 5332, electronic main valve 11, electronic regulating valve 12, and PLC controller 13 used in the above embodiments are all commercially available products. As long as the functions of the present invention can be achieved, those skilled in the art can choose to use them according to common sense, and no special limitation is made here.

Claims

1. A wastewater defluorination device with recycled adsorbent, characterized in that: The invention comprises a main water inlet pipe (1), the front end of which is connected to an external wastewater source, a plurality of branch pipes (2) being arranged on the right side of the main water inlet pipe (1), the right ends of the plurality of branch pipes (2) being connected to a wastewater defluorination device (3), a support frame (4) being fixedly connected to the bottom of the wastewater defluorination device (3), a guide device (5) being arranged on the top of the wastewater defluorination device (3), a plurality of adsorption devices (6) being fixedly connected to the lower part of the guide device (5), a water sump (7) being arranged on the right side of the wastewater defluorination device (3), a water pump (8) being fixedly connected to the water sump (7), a drainage main pipe (9) being arranged on the right side of the water sump (7), and a left end of the drainage main pipe (9) being connected to a water outlet of the water pump (8); The wastewater defluorination equipment (3) comprises a plurality of wastewater defluorination channels (31), both sides of the plurality of wastewater defluorination channels (31) are fixedly connected with desorption equipment (32), the tops of the plurality of wastewater defluorination channels (31) and the tops of the desorption equipment (32) are provided with insertion ports (33), and the adsorption device (6) is plug-connected in the insertion ports (33).

2. The wastewater defluorination equipment with adsorbent recycling as claimed in claim 1, characterized in that: The adsorption device (6) comprises a top plate (61), an adsorbent mechanism (62) is fixedly connected below the top plate (61), and a sealing ring (63) is provided below the outer side of the top plate (61).

3. The wastewater defluorination equipment with adsorbent recycling as claimed in claim 2, characterized in that: The adsorbent mechanism (62) comprises a plurality of vertical activated alumina plates (621), and the tops of the plurality of vertical activated alumina plates (621) are fixedly connected to the top plate (61).

4. The wastewater defluorination equipment with adsorbent recycling as claimed in claim 2, characterized in that: The adsorbent mechanism (62) comprises a filling basket (622), the top of the filling basket (622) is fixedly connected to the top plate (61), and the filling basket (622) is filled with adsorbent particles.

5. The wastewater defluorination equipment with adsorbent recycling as claimed in claim 1, characterized in that: The desorption device (32) comprises a refractory channel (321), a scrubbing tank (322) is fixedly connected to the right side of the refractory channel (321), a microporous aeration pipe (323) is fixedly connected inside the scrubbing tank (322), the left end of the microporous aeration pipe (323) is connected to the refractory channel (321), a gas nozzle (324) is provided at the right end of the microporous aeration pipe (323) and the left end of the refractory channel (321), and an electronic igniter (325) is fixedly connected to the top of the refractory channel (321).

6. The wastewater defluorination equipment with adsorbent recycling as claimed in claim 5, characterized in that: The gas nozzle (324) comprises a columnar block (3241), wherein a through-hole tube 1 (3242) and a through-hole tube 2 (3243) are arranged inside the columnar block (3241), and a metal conduit 1 (3244) and a metal conduit 2 (3245) are respectively inserted and fixedly connected to the right sides of the through-hole tube 1 (3242) and the through-hole tube 2 (3243), and the outer walls of the metal conduit 1 (3244) and the metal conduit 2 (3245) are respectively electrically connected to the positive pole and the negative pole of the electronic igniter (325).

7. The wastewater defluorination equipment with adsorbent recycling as claimed in claim 1, characterized in that: The guide device (5) comprises a fixed crossbeam (51), a plurality of connecting rods (52) are fixedly connected below the fixed crossbeam (51), a lifting mechanism (53) is fixedly connected below both front and rear ends of the fixed crossbeam (51), the lifting mechanism (53) comprises a pneumatic rod (531), the top of the pneumatic rod (531) is fixedly connected to the fixed crossbeam (51), the bottom of the pneumatic rod (531) is fixedly connected to a slider (532), and the slider (532) is slidably connected to a base (534) via a screw mechanism (533).

8. The wastewater defluorination equipment with adsorbent recycling as claimed in claim 7, characterized in that: The screw mechanism (533) comprises a transmission rod (5331), wherein the transmission rod (5331) is screw-connected to the slider (532), and both front and rear ends of the transmission rod (5331) are rotationally connected to the base (534). The outer side wall of the base (534) is fixedly connected with a transmission motor (5332) for driving the transmission rod (5331) to rotate.

9. The wastewater defluorination equipment with adsorbent recycling as claimed in claim 1, characterized in that: The screw mechanism (533) comprises a transmission rod (5331), the transmission rod (5331) is screw-connected to the slider (532), the front and rear ends of the transmission rod (5331) are rotatably connected to the base (534), and the outer side wall of the base (534) is fixedly connected to a transmission motor (5332).

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