CN110550785B - Nanofiltration concentrate softening treatment device for landfill leachate - Google Patents
Nanofiltration concentrate softening treatment device for landfill leachate Download PDFInfo
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- CN110550785B CN110550785B CN201910971793.4A CN201910971793A CN110550785B CN 110550785 B CN110550785 B CN 110550785B CN 201910971793 A CN201910971793 A CN 201910971793A CN 110550785 B CN110550785 B CN 110550785B
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- sealing
- opening
- closing
- driving
- unlocking
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- 238000001728 nano-filtration Methods 0.000 title claims abstract description 45
- 239000000149 chemical water pollutant Substances 0.000 title claims abstract description 18
- 239000012141 concentrate Substances 0.000 title claims abstract description 16
- 238000006243 chemical reaction Methods 0.000 claims abstract description 94
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 41
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 33
- 230000009467 reduction Effects 0.000 claims abstract description 29
- 238000007789 sealing Methods 0.000 claims description 129
- 230000001105 regulatory effect Effects 0.000 claims description 19
- 238000005192 partition Methods 0.000 claims description 17
- 210000001503 joint Anatomy 0.000 claims description 15
- 230000007246 mechanism Effects 0.000 claims description 7
- 230000002378 acidificating effect Effects 0.000 claims description 6
- 230000000712 assembly Effects 0.000 claims description 5
- 238000000429 assembly Methods 0.000 claims description 5
- 210000005056 cell body Anatomy 0.000 claims description 5
- 238000011084 recovery Methods 0.000 abstract description 12
- 239000002253 acid Substances 0.000 abstract description 5
- 239000002351 wastewater Substances 0.000 description 36
- 230000006872 improvement Effects 0.000 description 10
- 230000005540 biological transmission Effects 0.000 description 8
- 229910000403 monosodium phosphate Inorganic materials 0.000 description 8
- 235000019799 monosodium phosphate Nutrition 0.000 description 8
- AJPJDKMHJJGVTQ-UHFFFAOYSA-M sodium dihydrogen phosphate Chemical compound [Na+].OP(O)([O-])=O AJPJDKMHJJGVTQ-UHFFFAOYSA-M 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 238000004065 wastewater treatment Methods 0.000 description 6
- 239000012528 membrane Substances 0.000 description 5
- 229910019142 PO4 Inorganic materials 0.000 description 4
- 239000010452 phosphate Substances 0.000 description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 4
- 230000035484 reaction time Effects 0.000 description 4
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 3
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 3
- 229910001424 calcium ion Inorganic materials 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 229910001425 magnesium ion Inorganic materials 0.000 description 3
- 238000001223 reverse osmosis Methods 0.000 description 3
- 239000001506 calcium phosphate Substances 0.000 description 2
- 229910000389 calcium phosphate Inorganic materials 0.000 description 2
- 235000011010 calcium phosphates Nutrition 0.000 description 2
- -1 hydroxide ions Chemical class 0.000 description 2
- GVALZJMUIHGIMD-UHFFFAOYSA-H magnesium phosphate Chemical compound [Mg+2].[Mg+2].[Mg+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O GVALZJMUIHGIMD-UHFFFAOYSA-H 0.000 description 2
- 239000004137 magnesium phosphate Substances 0.000 description 2
- 229910000157 magnesium phosphate Inorganic materials 0.000 description 2
- 229960002261 magnesium phosphate Drugs 0.000 description 2
- 235000010994 magnesium phosphates Nutrition 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 239000008234 soft water Substances 0.000 description 2
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000003340 mental effect Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/06—Contaminated groundwater or leachate
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/02—Softening water by precipitation of the hardness
- C02F5/04—Softening water by precipitation of the hardness using phosphates
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a nanofiltration concentrated solution softening treatment device of landfill leachate, which relates to the field of landfill leachate treatment, and solves the problems that a reduction system is easy to be polluted and the recovery rate is low. The technical key points are as follows: including collecting vat, acid-base adjustment tank, reaction tank and reduction system, collecting vat, acid-base adjustment tank, reaction tank and reduction system communicate in proper order, the collecting vat is equipped with the concentrate water inlet, the acid-base adjustment tank is equipped with sodium hydroxide feeder, the reaction tank is equipped with acid water softener feeder, be equipped with the booster pump between reaction tank and the reduction system. Reduces the pollution of the nanofiltration concentrated solution to the reduction system, and further achieves the advantages that the reduction system is not easy to be polluted and the recovery rate is higher.
Description
Technical Field
The invention relates to the field of landfill leachate treatment, in particular to a nanofiltration concentrated solution softening treatment device for landfill leachate.
Background
Reverse osmosis membrane technology has been widely used in the treatment of landfill leachate. The recovery rate of the reverse osmosis membrane system refers to the total recovery rate of the reverse osmosis system during operation, and the recovery rate of the membrane system is usually limited by the limit value that the membrane system cannot be precipitated due to supersaturation of impurities such as salts.
The components in the landfill leachate are complex and high in hardness, so that the concentration of calcium ions and magnesium ions in the concentrated solution processed by the nanofiltration system of the landfill leachate is greatly increased, the improvement of the recovery rate of the reduction system is restricted, the membrane pollution is easy to cause, the pollution to the reduction system is easy to cause, and the recovery rate of the reduction system is influenced. Therefore, the prior art has the problems that the reduction system is easy to be polluted and the recovery rate is low.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide a nanofiltration concentrated solution softening treatment device for landfill leachate, which has the advantages that a reduction system is not easy to pollute and the recovery rate is high.
The technical scheme adopted for solving the technical problems is as follows:
the utility model provides a nanofiltration concentrate softening treatment device of landfill leachate, includes collecting vat, acid-base adjustment tank, reaction tank and reduction system, collecting vat, acid-base adjustment tank, reaction tank and reduction system communicate in proper order, the collecting vat is equipped with the concentrate water inlet, the acid-base adjustment tank is equipped with sodium hydroxide feeder, the reaction tank is equipped with acid water softener feeder, be equipped with the booster pump between reaction tank and the reduction system.
As a further improvement of the invention: the reaction tank comprises a tank body, a water draining cavity and at least 3 reaction cavities, wherein the water draining cavity and the reaction cavities are all located in the tank body, a partition plate is arranged between the adjacent reaction cavities, the water draining cavity is located below the reaction cavities, an opening and closing mechanism is arranged between the reaction cavities and the water draining cavity, the tank body is slidably connected with a sliding frame, the sliding frame is provided with a water hose communicated with an acidic soft water feeder, one end of the water hose is located above the reaction cavities, the other end of the water hose is communicated with an acid-base regulating tank, the tank body is provided with a driving assembly for driving the sliding frame, and at least 3 reaction cavities are arranged along the driving direction of the driving assembly.
As a further improvement of the invention: the opening and closing mechanism comprises an opening and closing frame and at least 2 sealing plates, the sealing plates are rotatably connected with the groove body and are in butt joint with the partition plates, flexible sealing elements are arranged on the partition plates and are in butt joint with the sealing plates, sealing locking assemblies are arranged on the sealing plates and are in butt joint with the groove body, the opening and closing frame is rotatably connected with the groove body, the opening and closing frame is identical with the rotation axis of the sealing plates and is in butt joint with one side of the sealing plates, which is far away from the reaction chamber, and the opening and closing frame is provided with an opening and closing locking assembly in butt joint with the groove body.
As a further improvement of the invention: the sealing locking assembly comprises at least 3 sealing locking blocks and sealing elastic pieces, wherein at least 3 sealing locking blocks are connected with the groove body in a sliding mode and are respectively connected with different sealing plates in a clamping mode, and two ends of each sealing elastic piece are respectively fixedly connected with the sealing locking blocks and the groove body.
As a further improvement of the invention: the opening and closing locking assembly comprises at least 3 opening and closing locking blocks and an opening and closing elastic piece, the opening and closing locking blocks are in sliding connection with the groove body and are in clamping connection with the sealing plate, and two ends of the opening and closing elastic piece are fixedly connected with the opening and closing locking blocks and the groove body respectively.
As a further improvement of the invention: the driving assembly comprises a transmission belt, a driving shaft, a driving block and a driving piece, wherein the driving shaft is rotationally connected with the groove body, the transmission belt is wound on the driving shaft, the transmission belt is positioned below the sliding frame, the driving piece is connected with the driving shaft, and the driving block is fixedly connected with the transmission belt and is in butt joint with the sliding frame.
As a further improvement of the invention: the vertical sliding connection of cell body has at least 3 sealed unlocking lever, at least 3 sealed unlocking lever lower extreme fixedly connected with respectively with different sealed locking piece sliding connection sealed oblique slide rail, sealed unlocking piece of sealed unlocking lever upper end fixedly connected with, the drive piece is equipped with the inclined plane with sealed unlocking piece butt.
As a further improvement of the invention: the vertical sliding connection of cell body has at least 3 to open and shut the unlocking lever, it is equipped with fixed link to open and shut between the unlocking lever, at least 3 open and shut the unlocking lever all with fixed link fixed connection, at least 3 open and shut unlocking lever lower extreme fixedly connected with respectively with different open and shut the locking piece sliding connection have the oblique slide rail that opens and shuts, open and shut unlocking lever upper end fixedly connected with open and shut the unlocking piece, the drive piece be equipped with open and shut unlocking piece butt's inclined plane.
The sealing unlocking block is positioned above the adjacent reaction cavities in the moving direction of the driving assembly driving sliding frame; the lower end of the sealing unlocking rod is connected with the last sealing locking piece in the moving direction of the driving assembly driving sliding frame, and the sealing unlocking piece fixedly connected with the sealing unlocking rod is positioned above the first reaction cavity in the moving direction of the driving assembly driving sliding frame. The positions of the 3 opening and closing unlocking blocks are respectively in one-to-one correspondence with the positions of the 3 sealing unlocking blocks, so that the driving block can push the sealing unlocking blocks and the opening and closing unlocking blocks to move upwards at the same time.
As a further improvement of the invention: the groove body rotates and is connected with first pulley and second pulley, open and shut and erect the first cable that has one end and its fixed connection, the one end fixedly connected with first balancing weight that opens and shuts the frame is kept away from to first cable, the groove body rotates and is connected with first pulley, first cable winds and locates first pulley and second pulley, first pulley position height is higher than the frame that opens and shuts, sealed locking piece is equipped with the sealed oblique chamfer with the closing plate butt, the locking piece that opens and shuts is equipped with the oblique chamfer that opens and shuts with the frame butt that opens and shuts.
As a further improvement of the invention: the driving blocks are arranged 2 in total, the driving blocks are arranged 2 in number and are opposite in position on the transmission belt, the sliding frame is fixedly connected with a second inhaul cable, one end of the second inhaul cable, which is far away from the sliding frame, is fixedly connected with a second balancing weight, the groove body is rotationally connected with a third pulley, the second inhaul cable is wound on the third pulley, and the third pulley is located on one side, which is far away from the driving direction of the driving assembly, of the sliding frame.
Compared with the prior art, the invention has the beneficial effects that:
and regulating the pH value of the nanofiltration concentrated solution by sodium hydroxide to enable the pH value of the nanofiltration concentrated solution to be 8-9. And adding a sodium dihydrogen phosphate solution into the nanofiltration concentrated solution in the acid-base regulating tank, and reacting for 15 minutes, wherein sodium hydroxide in the nanofiltration concentrated solution reacts with sodium dihydrogen phosphate to generate phosphate and water. The hydroxide ions in the nanofiltration concentrated solution are combined to form water, so that the pH value of the nanofiltration concentrated solution is reduced, and the function of adjusting the pH value of the nanofiltration concentrated solution is achieved. The phosphate produced by the reaction can form insoluble precipitate of calcium phosphate and magnesium phosphate with calcium ions and magnesium ions in water, so that the hardness of the nanofiltration concentrated solution can be effectively reduced, the effect of softening the nanofiltration concentrated solution is achieved, the pollution of the nanofiltration concentrated solution to a reduction system is reduced, and the advantages that the reduction system is not easy to be polluted and the recovery rate is higher are achieved.
The wastewater is input, reacted and output in different reaction chambers respectively, so that uninterrupted input of wastewater can be realized, the effect of improving wastewater treatment efficiency is achieved, the softening effect on wastewater is achieved, the hardness of wastewater is further reduced, the pollution effect of nanofiltration concentrated solution on a reduction system is reduced, and the advantages that the reduction system is not easy to be polluted and the recovery rate is higher are achieved.
Drawings
Fig. 1 is a schematic structural view of the present embodiment;
FIG. 2 is a schematic view of the structure of the reaction chamber and the drainage chamber in this embodiment;
fig. 3 is a schematic structural diagram of the opening and closing mechanism in the present embodiment;
FIG. 4 is an enlarged view of FIG. 3 at A;
fig. 5 is a schematic structural view of the seal unlocking lever and the opening and closing unlocking lever in the present embodiment.
Reference numerals: 11. a collection tank; 12. an acid-base regulating tank; 13. a reaction tank; 14. a abatement system; 15. a booster pump; 21. a tank body; 22. a drainage cavity; 23. a reaction chamber; 24. a carriage; 25. a water hose; 26. acid water softener feeder; 27. a partition plate; 31. a sealing plate; 32. sealing the locking piece; 33. sealing and chamfering obliquely; 34. a seal elastic member; 35. a flexible seal; 36. sealing the unlocking rod; 37. sealing the inclined slide rail; 38. sealing unlocking blocks; 41. an opening and closing frame; 42. an opening and closing locking piece; 43. opening and closing oblique chamfering; 44. an opening and closing elastic member; 45. opening and closing the unlocking rod; 46. opening and closing the inclined slide rail; 47. opening and closing unlocking blocks; 48. a fixed connecting rod; 51. a transmission belt; 52. a drive shaft; 53. a driving block; 54. an inclined plane; 55. a driving member; 61. a first pulley; 62. a second pulley; 63. a first cable; 64. a first balancing weight; 65. a second guy cable; 66. a second balancing weight; 67. and a third pulley.
Detailed Description
The invention will now be further described with reference to the accompanying drawings and examples:
the implementation scheme is as follows:
the utility model provides a nanofiltration concentrate softening treatment device of landfill leachate, as shown in fig. 1 through 5, including collecting vat 11, acid-base regulation groove 12, reaction tank 13 and reduction system 14, collecting vat 11, acid-base regulation groove 12, reaction tank 13 and reduction system 14 communicate in proper order, and collecting vat 11 is equipped with the concentrate water inlet, and acid-base regulation groove 12 is equipped with sodium hydroxide feeder (not shown in the figure), and reaction tank 13 is equipped with acid water softener feeder 26, is equipped with booster pump 15 between reaction tank 13 and the reduction system 14.
The reaction tank 13 comprises a tank body 21, a drainage cavity 22 and 3 reaction cavities 23, wherein the drainage cavity 22 and the reaction cavities 23 are all positioned in the tank body 21, a partition plate 27 is arranged between every two adjacent reaction cavities 23, the drainage cavity 22 is positioned below the reaction cavities 23, an opening and closing mechanism is arranged between each reaction cavity 23 and each drainage cavity 22, the tank body 21 is slidably connected with a sliding frame 24, the sliding frame 24 is provided with a water hose 25 communicated with an acidic soft water feeder, one end of the water hose 25 is positioned above the reaction cavity 23, the other end of the water hose is communicated with the acid-base regulating tank 12, the tank body 21 is provided with a driving assembly for driving the sliding frame 24 to slide, and the 3 reaction cavities 23 are arranged along the direction of the movement of the driving sliding frame 24 of the driving assembly.
The opening and closing mechanism comprises an opening and closing frame 41 and at least 2 sealing plates 31, wherein the sealing plates 31 are rotatably connected with the groove body 21 and are abutted against the partition plates 27, the partition plates 27 are provided with flexible sealing elements 35 abutted against the sealing plates 31, the sealing plates 31 are provided with sealing locking assemblies which are clamped against the groove body 21, the opening and closing frame 41 is rotatably connected with the groove body 21, the rotation axes of the opening and closing frame 41 and the sealing plates 31 are the same, the opening and closing frame 41 and the sealing plates 31 are clamped against one side surface of the reaction cavity 23, and the opening and closing frame 41 is provided with opening and closing locking assemblies which are clamped against the groove body 21.
The flexible seal member 35 can block the gap between the sealing plate 31 and the partition plate 27 to prevent leakage of waste water from the reaction chamber 23.
The sealing locking assembly comprises 3 sealing locking blocks 32 and sealing elastic pieces 34,3, wherein the sealing locking blocks 32 are both in sliding connection with the groove body 21 and are respectively clamped with different sealing plates 31, and two ends of the sealing elastic piece 34 are respectively fixedly connected with the sealing locking blocks 32 and the groove body 21.
The opening and closing locking assembly comprises 3 opening and closing locking blocks 42 and an opening and closing elastic piece 44, wherein the opening and closing locking blocks 42 are in sliding connection with the groove body 21 and are clamped with the sealing plate 31, and two ends of the opening and closing elastic piece 44 are respectively fixedly connected with the opening and closing locking blocks 42 and the groove body 21.
The driving assembly comprises a driving belt 51, a driving shaft 52, a driving block 53 and a driving piece 55, wherein the driving shaft 52 is rotationally connected with the groove body 21, the driving belt 51 is wound on the driving shaft 52, the driving belt 51 is positioned below the sliding frame 24, the driving piece 55 is a motor, an output shaft of the motor is fixedly connected with the driving shaft 52, and the driving block 53 is fixedly connected with the driving belt 51 and is abutted against the sliding frame 24.
The groove body 21 is vertically and slidably connected with 3 sealing unlocking rods 36,3, the lower ends of the sealing unlocking rods 36 are fixedly connected with sealing inclined slide rails 37 which are respectively and slidably connected with different sealing locking blocks 32, and the upper ends of the sealing unlocking rods 36 are fixedly connected with sealing unlocking blocks 38.
The groove body 21 is vertically connected with 3 opening and closing unlocking rods 45 in a sliding manner, a fixed connecting rod 48 is arranged between the opening and closing unlocking rods 45, the 3 opening and closing unlocking rods 45 are fixedly connected with the fixed connecting rod 48, the lower ends of the 3 opening and closing unlocking rods 45 are fixedly connected with opening and closing inclined sliding rails 46 which are respectively connected with different opening and closing locking blocks 42 in a sliding manner, the upper ends of the opening and closing unlocking rods 45 are fixedly connected with opening and closing unlocking blocks 47, and a driving block 53 is provided with an inclined surface 54 which is in butt joint with the opening and closing unlocking blocks 47 and the sealing unlocking blocks 38.
The lower ends of the two sealing unlocking bars 36 are not connected with the last sealing locking block 32 in the moving direction of the driving assembly driving sliding frame 24, and the sealing unlocking block 38 fixedly connected with the two sealing unlocking bars is positioned above the adjacent reaction cavity 23 in the moving direction of the driving assembly driving sliding frame 24; the lower end is connected with the sealing unlocking rod 36 of the last sealing locking block 32 in the moving direction of the driving assembly driving sliding frame 24, and the sealing unlocking block 38 fixedly connected with the sealing unlocking rod is positioned above the first reaction cavity 23 in the moving direction of the driving assembly driving sliding frame 24. The positions of the 3 unlocking and locking blocks 47 are respectively in one-to-one correspondence with the positions of the 3 sealing unlocking blocks 38, so that the driving block 53 can push the sealing unlocking blocks 38 and the unlocking and locking blocks 47 to move upwards at the same time.
The cell body 21 rotates and is connected with first pulley 61 and second pulley 62, the frame 41 that opens and shuts is equipped with one end and its fixed connection's first cable 63, the one end fixedly connected with first balancing weight 64 of frame 41 that opens and shuts is kept away from to first cable 63, the cell body 21 rotates and is connected with first pulley 61, first cable 63 winds and locates first pulley 61 and second pulley 62, first pulley 61 position height is higher than frame 41 that opens and shuts, sealed locking piece 32 is equipped with the sealed chamfer 33 with closing plate 31 butt, the locking piece 42 that opens and shuts is equipped with the chamfer 43 that opens and shuts with frame 41 butt, the second pulley 62 height is higher than first pulley 61.
The drive blocks 53 are arranged in 2, the positions of the 2 drive blocks 53 on the transmission belt 51 are opposite, the sliding frame 24 is fixedly connected with a second inhaul cable 65, one end of the second inhaul cable 65 away from the sliding frame 24 is fixedly connected with a second balancing weight 66, the groove body 21 is rotationally connected with a third pulley 67, the second inhaul cable 65 is wound on the third pulley 67, and the third pulley 67 is located on one side of the sliding frame 24 away from the driving direction of the driving component.
The driving member 55 drives the rotating shaft to rotate, the rotating shaft drives the driving belt 51 and the driving block 53 to rotate, and the driving block 53 above the driving belt 51 is abutted against the sliding frame 24 and drives the sliding frame 24 to move along the rotation direction of the driving block 53. When the driving block 53 abutting the sliding frame 24 moves and rotates to the lower portion of the driving belt 51, the abutting state of the sliding frame 24 and the driving block 53 is released, the second balancing weight 66 drives the sliding frame 24 to quickly return to the initial position through the second inhaul cable 65 and then abuts the other driving block 53, so that the sliding frame 24 drives the water hose 25 to periodically move, and waste water can be periodically injected into different reaction chambers 23.
When the sliding frame 24 is positioned above one reaction cavity 23, the sealing plate 31 at the lower end of the reaction cavity 23 is abutted with the partition plate 27 to prevent waste water in the reaction cavity 23 from flowing to the drainage cavity 22, the sealing locking block 32 is clamped with the sealing plate 31, and the sliding frame 24 moves above the other reaction cavity 23 under the drive of the driving block 53. When the driving block 53 moves to the upper side of the other reaction cavity 23 and reaches the reaction time required by the wastewater, the inclined surface 54 on the driving block 53 is abutted against the sealing unlocking block 38, the driving block 53 continues to move, so that the inclined surface 54 slides relatively to the sealing unlocking block 38, the sealing unlocking rod 36 and the sealing inclined sliding rail 37 are pushed to move upwards by the inclined surface 54, the sealing inclined sliding rail 37 slides relatively to the sealing locking block 32, the sealing locking block 32 slides on the groove body 21 in a direction far away from the sealing plate 31, and the clamping state of the sealing locking block 32 and the sealing plate 31 is released; while the inclined surface 54 is in contact with the sealing unlocking block 38, the inclined surface 54 is in contact with the opening and closing unlocking block 47, the driving block 53 continues to move and pushes the opening and closing unlocking block 47, the opening and closing unlocking rod 45 and the opening and closing inclined sliding rail 46 to move upwards, and the opening and closing locking block 42 is driven to move in a direction away from the opening and closing frame 41 by the opening and closing inclined sliding rail 46 and is in contact with the opening and closing locking block 42 in a clamping connection state with the opening and closing frame 41. Then under the gravity action of the waste water, the sealing plate 31 and the opening and closing frame 41 are turned downwards, so that the sealing plate 31 cannot block the waste water, the waste water rapidly flows downwards into the drainage cavity 22, and then the waste water in the drainage cavity 22 is discharged out of the reaction tank 13.
After the waste water in the reaction chamber 23 flows into the drainage chamber 22, the sealing plate 31 and the opening and closing frame 41 losing the pressure of the waste water are turned upwards under the pulling of the first balancing weight 64 and the first inhaul cable 63, the sealing plate 31 and the opening and closing frame 41 are respectively abutted with the sealing inclined chamfer 33 and the opening and closing inclined chamfer 43, the sealing plate 31 and the opening and closing frame 41 are respectively slid relatively with the sealing inclined chamfer 33 and the opening and closing inclined chamfer 43 and respectively push the sealing lock block 32 and the opening and closing lock block 42 to slide until the sealing plate 31 is abutted with the partition plate 27, and then the sealing elastic piece 34 and the opening and closing elastic piece 44 respectively drive the sealing lock block 32 and the opening and closing lock block 42 to move towards the direction approaching the opening and closing frame 41, so that the sealing lock block 32 and the opening and closing lock block 42 are respectively clamped with the sealing plate 31, and the sealing plate 31 is locked. At this point the sealed chamber has discharged waste water into the drainage chamber 22 awaiting the next cycle of waste water input by the carriage 24.
When the carriage 24 moves to above the other reaction chamber 23, the operation of the sealing plate 31, the opening and closing frame 41, the sealing lock block 32 and the sealing unlock block 38 corresponding to the reaction chamber 23 is the same in the process of inputting waste water into the reaction chamber 23 and discharging waste water from the reaction chamber 23, and is not repeated here.
The wastewater can be continuously input into the reaction tank 13, and the wastewater treatment efficiency of the reaction tank 13 is effectively improved.
The drive member 55 drives the transmission belt 51 and the drive block 53 to move, so that the periodic movement of the sliding frame 24 and the sealing plate 31 is realized. The seal unlocking block 38 and the opening and closing unlocking block 47 are used for abutting against the inclined surface 54, and linkage of the driving block 53 and the seal locking block 32 and the opening and closing locking block 42 is realized. The sealing lock block 32 and the opening and closing lock block 42 are used for locking the sealing plate 31 and the opening and closing frame 41, respectively, to prevent the sealing plate 31 and the opening and closing frame 41 from accidentally turning down on the tank body 21. The sealing plate 31 is used to separate the reaction tank 13 from the drain chamber 22, and the partition plate 27 is used to separate the adjacent reaction tanks 13. The opening and closing frame 41 is used for connecting the first inhaul cable 63 and the first balancing weight 64 and driving the sealing plate 31 to reset. The second balancing weight 66 and the second guy cable 65 are used for driving the sliding frame 24 to reset.
Through the setting of fixed connecting rod 48, make 3 open and shut release lever 45 can reciprocate in step to make the drive piece 53 can drive 3 open and shut release lever 45 simultaneously upward movement, and then can make 3 open and shut lock piece 42 simultaneously with the state release of open and shut frame 41 joint.
The collecting tank 11, the acid-base regulating tank 12, the reaction tank 13 and the reduction system 14 are communicated with each other through pipelines in sequence. In this embodiment, the acidic water softener is sodium dihydrogen phosphate, and the sodium hydroxide feeder and the acidic water softener feeder 26 are all existing liquid feeders, which are respectively used for feeding sodium hydroxide solution into the acid-base regulating tank 12 and sodium dihydrogen phosphate solution into the reaction tank 13.
This embodiment has the following advantages:
the collecting tank 11 is used for collecting and storing nanofiltration concentrated solution flowing in from a concentrated solution water inlet, when the nanofiltration concentrated solution in the collecting tank 11 is required to be treated, the nanofiltration concentrated solution in the collecting tank 11 is conveyed into the acid-base regulating tank 12 through a pipeline, and sodium hydroxide is added into the nanofiltration concentrated solution through a sodium hydroxide feeder on the acid-base regulating tank 12, so that the pH value of the nanofiltration concentrated solution is regulated, and the pH value of the nanofiltration concentrated solution is regulated to 8-9. The nanofiltration concentrated solution with the pH value of 8-9 in the acid-base regulating tank 12 is conveyed into the reaction tank 13 through a pipeline, the sodium dihydrogen phosphate solution is added into the nanofiltration concentrated solution in the acid-base regulating tank 12 through the acid water softener feeder 26 on the acid-base regulating tank 12, and after 15 minutes of reaction, sodium hydroxide in the nanofiltration concentrated solution reacts with sodium dihydrogen phosphate to generate phosphate and water, so that hydroxide ions in the nanofiltration concentrated solution are combined to form water, the pH value of the nanofiltration concentrated solution is reduced, and the function of regulating the pH value of the nanofiltration concentrated solution is achieved. The phosphate produced by the reaction can form insoluble precipitate of calcium phosphate and magnesium phosphate with calcium ions and magnesium ions in water, so that the hardness of the nanofiltration concentrated solution can be effectively reduced, the effect of softening the nanofiltration concentrated solution is achieved, the pollution of the nanofiltration concentrated solution to the reduction system 14 is reduced, and the advantages that the reduction system 14 is not easy to be polluted and the recovery rate is high are achieved. Finally, the nanofiltration concentrated solution in the reaction tank 13 is conveyed into the reduction system 14 through the booster pump 15, and the water is treated through the reduction system 14.
During nanofiltration concentrate treatment, the amount of nanofiltration concentrate to be treated tends to be large, and the transport speed of nanofiltration concentrate in the individual treatment zone is limited. If sodium dihydrogen phosphate is only fed into a single reaction area, the reaction time of the wastewater can be satisfied only by taking the time taken for the reaction when the wastewater delivery and the sodium dihydrogen phosphate feeding are finished, and the input and output of the wastewater in the reaction tank 13 are stopped in the reaction process, and the wastewater in the reaction tank 13 is discharged for a long time, so that the treatment efficiency is limited. The reason why the treatment efficiency of the reaction tank 13 is low is that the input, reaction and output of the wastewater in the reaction tank 13 cannot be performed at the same time.
By moving the sliding frame 24 on the tank body 21, one end of the water hose 25 is driven to move to different reaction chambers 23 respectively, so that wastewater can flow into different reaction chambers 23 respectively. When the sealing plates 31 rotate in the direction approaching the partition plates 27 and are abutted against the partition plates 27, the sealing plates 31 can block the liquid in the reaction chamber 23 and prevent the liquid in the reaction chamber 23 from flowing to the water draining chamber 22, so that the waste water can react in the reaction chamber 23 for a sufficient time; when the sealing plate 31 is rotated in a direction away from the partition plate 27, water in the reaction chamber 23 can flow into the drain chamber 22, so that waste water can be discharged out of the reaction tank 13 through the drain chamber 22. Thus, the input, reaction and output of the wastewater can be respectively carried out in different reaction chambers 23, and the uninterrupted input of the wastewater can be realized, thereby achieving the effect of improving the wastewater treatment efficiency.
The wastewater can be input, reacted and output through the 3 mutually independent reaction chambers 23, so that the treatment efficiency can be effectively improved, and the method is particularly suitable for being applied to water treatment facilities with the reaction time not exceeding half an hour. In the conventional wastewater treatment tank, taking a wastewater input and output speed of 1 cubic meter per minute, a wastewater treatment time of 15 minutes for a reaction time, and a wastewater treatment tank of 15 cubic meters as an example, the wastewater input and output time is required to consume 15 minutes, i.e., the treatment time per 15 cubic meters of wastewater is 45 minutes. The uninterrupted input of wastewater is realized in the treatment period through the reaction tank 13 in the embodiment, namely 45 cubic meters of wastewater can be treated in 45 minutes in the above case, so that the treatment efficiency of wastewater is effectively improved.
In view of the above, after reading the present document, those skilled in the art should make various other corresponding changes without creative mental effort according to the technical scheme and the technical conception of the present invention, which are all within the scope of the present invention.
Claims (6)
1. Nanofiltration concentrate softening treatment device for landfill leachate is characterized in that: the acid-base water treatment device comprises a collecting tank (11), an acid-base regulating tank (12), a reaction tank (13) and a reduction system (14), wherein the collecting tank (11), the acid-base regulating tank (12), the reaction tank (13) and the reduction system (14) are sequentially communicated, the collecting tank (11) is provided with a concentrated solution water inlet, the acid-base regulating tank (12) is provided with a sodium hydroxide feeder, the reaction tank (13) is provided with an acidic water softener feeder (26), and a booster pump (15) is arranged between the reaction tank (13) and the reduction system (14); the reaction tank (13) comprises a tank body (21), a drainage cavity (22) and at least 3 reaction cavities (23), wherein the drainage cavity (22) and the reaction cavities (23) are both positioned in the tank body (21), a partition plate (27) is arranged between every two adjacent reaction cavities (23), the drainage cavity (22) is positioned below the reaction cavities (23), an opening and closing mechanism is arranged between each reaction cavity (23) and each drainage cavity (22), the tank body (21) is slidably connected with a sliding frame (24), the sliding frame (24) is provided with a water hose (25) communicated with an acidic water softener, one end of the water hose (25) is positioned above the corresponding reaction cavity (23) and the other end of the water hose is communicated with an acid-base regulating tank (12), the tank body (21) is provided with a driving assembly for driving the sliding frame (24), and at least 3 reaction cavities (23) are arranged along the driving direction of the driving assembly; the opening and closing mechanism comprises an opening and closing frame (41) and at least 3 sealing plates (31), the sealing plates (31) are rotatably connected with the groove body (21) and are in butt joint with the partition plates (27), the partition plates (27) are provided with flexible sealing pieces (35) in butt joint with the sealing plates (31), the sealing plates (31) are provided with sealing locking assemblies in butt joint with the groove body (21), the opening and closing frame (41) is rotatably connected with the groove body (21), the rotation axes of the opening and closing frame (41) and the sealing plates (31) are the same, the opening and closing frame (41) and one side face of the sealing plates (31) away from the reaction cavity (23) are in butt joint, and the opening and closing frame (41) is provided with opening and closing locking assemblies in butt joint with the groove body (21). The sealing locking assembly comprises at least 3 sealing locking blocks (32) and sealing elastic pieces (34), at least 3 sealing locking blocks (32) are respectively connected with the groove body (21) in a sliding manner and are respectively clamped with different sealing plates (31), and two ends of each sealing elastic piece (34) are respectively fixedly connected with the sealing locking blocks (32) and the groove body (21); the opening and closing locking assembly comprises at least 3 opening and closing locking blocks (42) and opening and closing elastic pieces (44), the opening and closing locking blocks (42) are in sliding connection with the groove body (21) and are in clamping connection with the sealing plate (31), and two ends of the opening and closing elastic pieces (44) are respectively fixedly connected with the opening and closing locking blocks (42) and the groove body (21).
2. The nanofiltration concentrate softening apparatus of the landfill leachate, as claimed in claim 1, wherein: the driving assembly comprises a driving belt (51), a driving shaft (52), a driving block (53) and a driving piece (55), wherein the driving shaft (52) is rotationally connected with the groove body (21), the driving belt (51) is wound on the driving shaft (52), the driving belt (51) is located below the sliding frame (24), the driving piece (55) is connected with the driving shaft (52), and the driving block (53) is fixedly connected with the driving belt (51) and is abutted to the sliding frame (24).
3. The nanofiltration concentrate softening apparatus of the landfill leachate, according to claim 2, wherein: the groove body (21) is vertically connected with at least 3 sealing unlocking rods (36) in a sliding mode, at least 3 sealing oblique sliding rails (37) which are respectively connected with different sealing locking blocks (32) in a sliding mode are fixedly connected to the lower ends of the sealing unlocking rods (36), sealing unlocking blocks (38) are fixedly connected to the upper ends of the sealing unlocking rods (36), and inclined planes (54) which are in butt joint with the sealing unlocking blocks (38) are arranged on the driving blocks (53).
4. The nanofiltration concentrate softening apparatus of the landfill leachate, according to claim 2, wherein: the vertical sliding connection of cell body (21) has at least 3 unlocking rod (45), be equipped with fixed connecting rod (48) between unlocking rod (45) that opens and shuts, at least 3 unlocking rod (45) all with fixed connecting rod (48) fixed connection, at least 3 unlocking rod (45) lower extreme fixedly connected with respectively with different unlocking piece (42) sliding connection's oblique slide rail (46) that opens and shuts, unlocking rod (45) upper end fixedly connected with unlocking piece that opens and shuts (47), driving piece (53) are equipped with inclined plane (54) with unlocking piece (47) butt that opens and shuts.
5. The nanofiltration concentrate softening apparatus of the landfill leachate, as claimed in claim 1, wherein: the groove body (21) is rotationally connected with a first pulley (61) and a second pulley (62), the opening and closing frame (41) is provided with a first stay cable (63) with one end being fixedly connected with the first stay cable, one end fixedly connected with first balancing weight (64) of the opening and closing frame (41) is kept away from to the first stay cable (63), the groove body (21) is rotationally connected with the first pulley (61), the first stay cable (63) is wound on the first pulley (61) and the second pulley (62), the position of the first pulley (61) is higher than the opening and closing frame (41), the sealing locking block (32) is provided with a sealing oblique chamfer (33) which is in butt joint with the sealing plate (31), and the opening and closing locking block (42) is provided with an opening and closing oblique chamfer (43) which is in butt joint with the opening and closing frame (41).
6. The nanofiltration concentrate softening apparatus of the landfill leachate, according to claim 2, wherein: the driving blocks (53) are arranged in 2 numbers, 2 numbers are arranged in total, the positions of the driving blocks (53) on the driving belt (51) are opposite, the sliding frame (24) is fixedly connected with a second inhaul cable (65), one end of the second inhaul cable (65) away from the sliding frame (24) is fixedly connected with a second balancing weight (66), the groove body (21) is rotationally connected with a third pulley (67), the second inhaul cable (65) is wound on the third pulley (67), and the third pulley (67) is located on one side, away from the driving direction of the driving assembly, of the sliding frame (24).
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