CN221296254U - Recovery device for ammonia in high-concentration ammonia-containing wastewater - Google Patents
Recovery device for ammonia in high-concentration ammonia-containing wastewater Download PDFInfo
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- CN221296254U CN221296254U CN202322735641.9U CN202322735641U CN221296254U CN 221296254 U CN221296254 U CN 221296254U CN 202322735641 U CN202322735641 U CN 202322735641U CN 221296254 U CN221296254 U CN 221296254U
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- pipe
- ammonia
- sprayer
- stage
- stripping device
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- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims abstract description 143
- 229910021529 ammonia Inorganic materials 0.000 title claims abstract description 70
- 239000002351 wastewater Substances 0.000 title claims abstract description 56
- 238000011084 recovery Methods 0.000 title claims abstract description 15
- 239000007788 liquid Substances 0.000 claims abstract description 48
- 238000005507 spraying Methods 0.000 claims abstract description 47
- 238000004064 recycling Methods 0.000 claims abstract description 4
- 238000005192 partition Methods 0.000 claims description 17
- 238000005086 pumping Methods 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 238000000605 extraction Methods 0.000 claims description 14
- 239000007921 spray Substances 0.000 claims description 14
- 239000000919 ceramic Substances 0.000 claims description 9
- 239000000945 filler Substances 0.000 claims description 9
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 8
- 239000003513 alkali Substances 0.000 claims description 8
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 8
- 239000002912 waste gas Substances 0.000 abstract description 15
- 239000007789 gas Substances 0.000 abstract description 9
- 238000010521 absorption reaction Methods 0.000 abstract description 6
- 238000003912 environmental pollution Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 125000004122 cyclic group Chemical group 0.000 abstract description 2
- 238000004891 communication Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000009423 ventilation Methods 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Physical Water Treatments (AREA)
Abstract
The utility model provides a recovery device for ammonia in high-concentration ammonia-containing wastewater. The utility model has the advantages of high ammonia removal and absorption efficiency in wastewater, less waste gas production, stable blown ammonia concentration, less environmental pollution and high automation degree. The specific structure comprises a blowing-off unit and a spraying unit. The ammonia-containing wastewater is firstly subjected to stripping treatment through the stripping unit, the stripped wastewater in the stripping unit selectively enters the next stripping unit for continuous stripping, during the period, the gas generated in the stripping unit can selectively enter the spraying unit for spraying and absorbing, and in addition, the residual gas in the spraying unit can also be selectively returned to the other stripping unit. The reciprocating gas-liquid cyclic utilization is adopted, and the recycling rate of the whole ammonia is greatly improved.
Description
Technical Field
The utility model relates to a wastewater recovery device, in particular to a recovery device for ammonia in high-concentration ammonia-containing wastewater.
Background
The national maximum limit of ammonia is set in both surface water and sewage discharge standards. Ammonia in the wastewater cannot be discharged until the wastewater is treated to a certain concentration. Meanwhile, ammonia is one of fertilizer and chemical raw materials. Therefore, higher concentrations of ammonia have higher recovery values.
Currently, there are several methods for ammonia recovery in industrial production, among which a relatively common and easy method is spraying and stripping absorption of ammonia-containing wastewater. However, the method has the problems of large exhaust gas amount, low stripping and absorbing efficiency, poor effect and the like, so that the existing spraying and stripping equipment is required to be further improved so as to achieve the ideal ammonia recovery effect.
Disclosure of utility model
In view of the above, the present utility model aims to provide a device for recovering ammonia from high-concentration ammonia-containing wastewater, which has the advantages of high efficiency of removing and absorbing ammonia from wastewater, small amount of waste gas generated, stable concentration of blown ammonia gas, less environmental pollution and high degree of automation.
In order to solve the technical problems, the technical scheme of the utility model is as follows:
The ammonia recovery device comprises a stripping unit and a spraying unit, wherein the stripping unit comprises a primary stripper, a secondary stripper and a tertiary stripper which are sequentially arranged from top to bottom, ammonia-containing wastewater is injected into the primary stripper, a first communicating pipe is connected between the primary stripper and the secondary stripper, a second communicating pipe is connected between the secondary stripper and the tertiary stripper, and alkali adding pipes are arranged on the primary stripper, the secondary stripper and the tertiary stripper;
the three-stage stripping device is provided with a compressed air pipe and a waste water outlet pipe;
the spraying unit comprises a first-stage sprayer, a second-stage sprayer and a third-stage sprayer which are sequentially arranged from top to bottom, a clear water pipe is arranged on the first-stage sprayer, a third communicating pipe is connected between the first-stage sprayer and the second-stage sprayer, and a fourth communicating pipe is connected between the second-stage sprayer and the third-stage sprayer;
The three-stage sprayer is provided with a blow-down pipe and an ammonia water outlet pipe;
The first ventilation pipe is connected between the first-stage stripping device and the third-stage sprayer, the second ventilation pipe is connected between the second-stage stripping device and the second-stage sprayer, and the third ventilation pipe is connected between the third-stage stripping device and the first-stage sprayer.
According to the technical scheme, ammonia-containing wastewater is firstly injected into the first-stage stripper, ammonia-containing wastewater gradually flows into the second-stage stripper and the third-stage stripper through the first communicating pipe and the second communicating pipe, alkali is injected into the first-stage stripper, the second-stage stripper and the third-stage stripper through the alkali adding pipe to enable liquid to be alkaline, compressed air enters the third-stage stripper through the compressed air pipe and blows off the ammonia-containing wastewater in the third-stage stripper, waste gas blown off in the third-stage stripper enters the first-stage sprayer through the third communicating pipe, clean water in the first-stage sprayer is continuously sprayed, and ammonia in the waste gas can be absorbed into the clean water;
The waste water in the first-stage sprayer enters the second-stage sprayer through the third communicating pipe, the second-stage sprayer also continuously performs spraying action, and meanwhile, waste gas generated in the second-stage stripping device also enters the second-stage sprayer through the third communicating pipe, so that the ammonia content in the waste water in the second-stage sprayer is increased;
The waste water in the second-stage sprayer enters the third-stage sprayer through the fourth communicating pipe, the third-stage sprayer also continuously performs spraying action, and meanwhile, waste gas generated in the first-stage stripping device also enters the third-stage sprayer through the waste water, and the concentration of ammonia in the waste water in the third-stage sprayer is continuously increased;
After the treatment, the waste gas in the three-stage sprayer can be discharged after being absorbed by two-stage water spraying through the blow-down pipe, and ammonia in the sprayed water can be supplemented into water from the one-stage sprayer after reaching a certain concentration. The ammonia water after absorption in the three-stage sprayer can be comprehensively utilized through an ammonia water outlet pipe, and the recovery device has the advantages of high ammonia removal and absorption efficiency in wastewater, less waste gas production, stable blown ammonia gas concentration, less environmental pollution and high automation degree; in addition, the three of the first-stage stripping device, the second-stage stripping device and the third-stage stripping device are in butt joint with the three of the first-stage spraying device, the second-stage spraying device and the third-stage spraying device, high, medium and low ammonia content equipment is reasonably arranged, gravity factors can be utilized among the spraying devices in the spraying unit, and the waste water in the spraying unit automatically flows downwards without other liquid pumping devices.
Preferably, a fourth air pipe is connected between the secondary sprayer and the primary stripping device.
Through the technical scheme, air in the secondary sprayer with the medium ammonia content can be injected into the primary stripping device through the fourth air pipe, and the waste water in the primary stripping device contains high-concentration ammonia content, so that the waste water in the primary stripping device can be better stripped.
Preferably, a fifth vent pipe is connected between the primary sprayer and the secondary stripping device.
Through the technical scheme, as the gas in the first-stage sprayer is blown out from the third-stage stripper, the ammonia content of the air in the third-stage stripper is higher, the ammonia content of the air in the first-stage sprayer is higher, the air in the first-stage sprayer with high ammonia content and equal level can be injected into the second-stage stripper through the fifth vent pipe, the waste water in the second-stage stripper contains medium-level ammonia content, and further the waste water in the second-stage stripper can be better blown out.
Preferably, the first communicating pipe, the second communicating pipe, the third communicating pipe and the fourth communicating pipe are all provided with on-off valves.
Through the technical scheme, a user can control the free opening and closing of the four pipes of the first communicating pipe, the second communicating pipe, the third communicating pipe and the fourth communicating pipe through the opening and closing valve, and the control effect is good.
Preferably, the three primary sprayers, the two-stage sprayers and the three-stage sprayers have the same internal structure;
The primary sprayer comprises a spraying frame and a liquid pumping piece, a partition plate with through holes is arranged in the spraying frame, ceramic filler is arranged above the partition plate, a spraying pipe with holes is arranged above the ceramic filler, and liquid below the partition plate is pumped into the spraying pipe by the liquid pumping piece.
Through the technical scheme, the liquid below the partition plate can be continuously pumped into the spray pipe by the liquid pumping piece, the part of liquid can be sprayed out through the holes on the spray pipe, then the gas containing ammonia in the spray frame is sprayed and absorbed, the effective contact time of the gas and the liquid can be prolonged by arranging the ceramic filler, the ceramic filler and the partition plate are matched with each other, and the splashing amount generated by the liquid below the partition plate can be reduced to the greatest extent.
Preferably, the liquid extraction piece comprises a liquid extraction pump and a liquid extraction pipe, one end of the liquid extraction pipe is communicated with the inner space of the spraying frame below the partition board, the other end of the liquid extraction pipe is connected with the spraying pipe, and the liquid extraction pump is arranged on the liquid extraction pipe.
Through the technical scheme, the liquid pump can pump liquid in the space below the partition plate into the spray pipe through the liquid pumping pipe, and then the spray pipe sprays the liquid out, so that uninterrupted circulating reciprocating liquid spraying in the spray frame can be realized.
The technical effects of the utility model are mainly as follows:
(1) The ammonia in the wastewater is removed and absorbed efficiently;
(2) The waste gas production amount is small in the treatment process;
(3) The blown ammonia gas is absorbed relatively thoroughly, and the environmental pollution is less;
(4) The concentration of the blown ammonia-containing gas is stable;
(5) The automation degree of the treatment process is high, and long-term automatic unattended operation is expected to be realized.
Drawings
FIG. 1 is a schematic diagram of an embodiment;
fig. 2 is a schematic structural view of the primary sprayer.
Reference numerals: 1. a blow-off unit; 2. a primary stripper; 3. a secondary stripper; 4. a three-stage stripping device; 5. a first communication pipe; 6. a second communicating pipe; 7. adding an alkali pipe; 8. a compressed air tube; 9. a waste water outlet pipe; 10. a spraying unit; 11. a primary sprayer; 12. a secondary sprayer; 13. three-stage sprayers; 14. a clear water pipe; 15. a third communicating pipe; 16. a fourth communicating pipe; 17. blow-down pipe; 18. an ammonia water outlet pipe; 19. a first vent pipe; 20. a second vent pipe; 21. a third gas-passing pipe; 22. a fourth air pipe; 23. a fifth vent pipe; 24. a spray frame; 25. a liquid pumping piece; 26. a liquid pump; 27. a liquid suction pipe; 28. a partition plate; 29. a ceramic filler; 30. a spray pipe.
Detailed Description
The following detailed description of the utility model is provided in connection with the accompanying drawings to facilitate understanding and grasping of the technical scheme of the utility model.
The device for recycling ammonia in high-concentration ammonia-containing wastewater comprises a stripping unit 1 and a spraying unit 10. The ammonia-containing wastewater is firstly subjected to stripping treatment by the stripping unit 1, the stripped wastewater in the stripping unit 1 selectively enters the spraying unit 10 for continuous spraying, during which the gas generated in the stripping unit 1 can selectively enter the spraying unit 10 for spraying absorption, and in addition, the residual gas in the spraying unit 10 can also be selectively returned to the stripping unit 1. The reciprocating gas-liquid cyclic utilization is adopted, and the recycling rate of the whole ammonia is greatly improved.
The blow-off unit 1 is described in detail below:
The stripping unit 1 comprises a primary stripping device 2, a secondary stripping device 3 and a tertiary stripping device 4 which are sequentially arranged from top to bottom, ammonia-containing wastewater is injected into the primary stripping device 2, a first communicating pipe 5 is connected between the primary stripping device 2 and the secondary stripping device 3, and a second communicating pipe 6 is connected between the secondary stripping device 3 and the tertiary stripping device 4.
On-off valves are provided on the first communication pipe 5 and the second communication pipe 6 so as to control the on-off actions of the first communication pipe 5 and the second communication pipe 6.
The primary stripping device 2, the secondary stripping device 3 and the tertiary stripping device 4 are all provided with alkali adding pipes 7.
The three-stage stripping device 4 is provided with a compressed air pipe 8 and a waste water outlet pipe 9. Compressed air may enter the tertiary stripper 4 through a compressed air pipe 8. The waste water in the three-stage stripping device 4 can be discharged through a waste water outlet pipe 9, and the waste water after ammonia removal is subjected to the next treatment.
The spray unit 10 is described in detail below:
The spraying unit 10 comprises a first-stage sprayer 11, a second-stage sprayer 12 and a third-stage sprayer 13 which are sequentially arranged from top to bottom, wherein a clear water pipe 14 is arranged on the first-stage sprayer 11, and clear water enters the first-stage sprayer 11 through the clear water pipe 14. A third communicating pipe 15 is connected between the first-stage sprayer 11 and the second-stage sprayer 12, and a fourth communicating pipe 16 is connected between the second-stage sprayer 12 and the third-stage sprayer 13.
On/off valves are provided on the third communication pipe 15 and the fourth communication pipe 16 so as to control the opening/closing actions of the third communication pipe 15 and the fourth communication pipe 16.
The three-stage sprayer 13 is provided with a blow-down pipe 17 and an ammonia water outlet pipe 18. The air in the tertiary shower 13 can be discharged through the blow-down pipe 17. The ammonia water absorbed by the three-stage sprayer 13 is comprehensively utilized.
A first vent pipe 19 is connected between the primary air stripper 2 and the tertiary sprayer 13, a second vent pipe 20 is connected between the secondary air stripper 3 and the secondary sprayer 12, and a third vent pipe 21 is connected between the tertiary air stripper 4 and the primary sprayer 11.
A fourth air pipe 22 is connected between the secondary shower 12 and the primary air stripper 2. A fifth breather pipe 23 is connected between the primary sprayer 11 and the secondary stripper 3.
It should be noted that the three primary sprayers 11, the secondary sprayers 12 and the tertiary sprayers 13 have the same internal structure.
Here, the primary sprayer 11 is described as an example, and the secondary sprayer 12 and the tertiary sprayer 13 are also configured identically. The primary sprayer 11 comprises a spraying frame 24 and a liquid pumping piece 25, wherein a partition plate 28 with through holes is arranged in the spraying frame 24, ceramic filler 29 is arranged above the partition plate 28, a spraying pipe 30 with holes is arranged above the ceramic filler 29, and liquid below the partition plate 28 is pumped into the spraying pipe 30 by the liquid pumping piece 25.
The structure of the liquid pumping member 25 comprises a liquid pumping pump 26 and a liquid pumping pipe 27, wherein one end of the liquid pumping pipe 27 is communicated with the inner space of the spray frame 24 below the partition plate 28, the other end of the liquid pumping pipe 27 is connected with the spray pipe 30, and the liquid pumping pump 26 is arranged on the liquid pumping pipe 27.
The recovery device is in an actual use state:
The ammonia concentration of the wastewater in the first-stage stripping device 2, the second-stage stripping device 3 and the third-stage stripping device 4 in the stripping unit 1 is respectively high, medium and low.
The ammonia concentration of water in the first-stage sprayer 11, the second-stage sprayer 12 and the third-stage sprayer 13 in the spraying unit 10 is respectively low, medium and high.
Ammonia-containing wastewater is firstly injected into the primary stripping device 2, ammonia-containing wastewater gradually flows into the secondary stripping device 3 and the tertiary stripping device 4 through the first communicating pipe 5 and the second communicating pipe 6, alkali is injected into the primary stripping device 2, the secondary stripping device 3 and the tertiary stripping device 4 through the alkali adding pipe 7, so that the blown liquid always keeps certain alkalinity, compressed air enters the tertiary stripping device 4 through the compressed air pipe 8 and blows the ammonia-containing wastewater in the tertiary stripping device 4, the waste gas blown out of the tertiary stripping device 4 enters the primary spraying device 11 through the third communicating pipe 21, and clean water in the primary spraying device 11 is continuously sprayed circularly, so that ammonia in the waste gas can be absorbed into the clean water;
The waste water in the first-stage sprayer 11 enters the second-stage sprayer 12 through the third communicating pipe 15, the second-stage sprayer 12 also continuously performs spraying action, and meanwhile, the waste gas generated in the second-stage air stripping device 3 also enters the second-stage sprayer 12 through the third communicating pipe, so that the ammonia content in the waste water in the second-stage sprayer 12 is increased;
The waste water in the second-stage sprayer 12 enters the third-stage sprayer 13 through the fourth communicating pipe 16, the third-stage sprayer 13 also continuously sprays and absorbs, and meanwhile, the waste gas generated in the first-stage stripping device 2 also enters the third-stage sprayer 13 through the fourth communicating pipe, and the concentration of ammonia in the waste water in the third-stage sprayer 13 is continuously increased;
The waste gas generated in the secondary sprayer 12 can enter the primary air blower 2 through the fourth air pipe 22 for re-blowing, and the waste gas generated in the secondary sprayer 12 can also enter the secondary air blower 3 through the fifth air pipe 23 for re-blowing;
in addition, the wastewater after ammonia removal in the three-stage stripping device 4 is sent to the next step for treatment, the air in the three-stage sprayer 13 is discharged after being sprayed by two-stage water, and the ammonia water after absorption in the three-stage sprayer 13 is comprehensively utilized.
Of course, the above is only a typical example of the utility model, and other embodiments of the utility model are also possible, and all technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of the utility model claimed.
Claims (6)
1. The utility model provides a recovery unit of ammonia in high concentration ammonia-containing wastewater, includes stripping unit (1), spray unit (10), characterized by:
The stripping unit (1) comprises a primary stripping device (2), a secondary stripping device (3) and a tertiary stripping device (4) which are sequentially arranged from top to bottom, ammonia-containing wastewater is injected into the primary stripping device (2), a first communicating pipe (5) is connected between the primary stripping device (2) and the secondary stripping device (3), a second communicating pipe (6) is connected between the secondary stripping device (3) and the tertiary stripping device (4), and alkali adding pipes (7) are respectively arranged on the primary stripping device (2), the secondary stripping device (3) and the tertiary stripping device (4);
a compressed air pipe (8) and a waste water outlet pipe (9) are arranged on the three-stage stripping device (4);
The spraying unit (10) comprises a first-stage sprayer (11), a second-stage sprayer (12) and a third-stage sprayer (13) which are sequentially arranged from top to bottom, a clear water pipe (14) is arranged on the first-stage sprayer (11), a third communicating pipe (15) is connected between the first-stage sprayer (11) and the second-stage sprayer (12), and a fourth communicating pipe (16) is connected between the second-stage sprayer (12) and the third-stage sprayer (13);
the three-stage sprayer (13) is provided with a blow-down pipe (17) and an ammonia water outlet pipe (18);
A first vent pipe (19) is connected between the primary stripping device (2) and the tertiary sprayer (13), a second vent pipe (20) is connected between the secondary stripping device (3) and the secondary sprayer (12), and a third vent pipe (21) is connected between the tertiary stripping device (4) and the primary sprayer (11).
2. The recovery device of ammonia in high-concentration ammonia-containing wastewater according to claim 1, wherein: a fourth air pipe (22) is connected between the second-stage sprayer (12) and the first-stage stripping device (2).
3. The recovery device of ammonia in high-concentration ammonia-containing wastewater according to claim 2, wherein: a fifth breather pipe (23) is connected between the first-stage sprayer (11) and the second-stage stripping device (3).
4. The recovery device of ammonia in high-concentration ammonia-containing wastewater according to claim 1, wherein: the first communicating pipe (5), the second communicating pipe (6), the third communicating pipe (15) and the fourth communicating pipe (16) are all provided with opening and closing valves.
5. An apparatus for recovering ammonia from high-concentration ammonia-containing wastewater as defined in any one of claims 1 to 4, wherein:
the three inner structures of the primary sprayer (11), the secondary sprayer (12) and the tertiary sprayer (13) are the same;
The primary sprayer (11) comprises a spraying frame (24) and a liquid pumping piece (25), a partition plate (28) with a through hole is arranged in the spraying frame (24), ceramic filler (29) is arranged above the partition plate (28), a spraying pipe (30) with a hole is arranged above the ceramic filler (29), and liquid below the partition plate (28) is pumped into the spraying pipe (30) by the liquid pumping piece (25).
6. The device for recycling ammonia in high-concentration ammonia-containing wastewater according to claim 5, wherein the device comprises: the liquid extraction piece (25) comprises a liquid extraction pump (26) and a liquid extraction pipe (27), one end of the liquid extraction pipe (27) is communicated with the inner space of the spraying frame (24) below the partition plate (28), the other end of the liquid extraction pipe (27) is connected with the spraying pipe (30), and the liquid extraction pump (26) is arranged on the liquid extraction pipe (27).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322735641.9U CN221296254U (en) | 2023-10-11 | 2023-10-11 | Recovery device for ammonia in high-concentration ammonia-containing wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322735641.9U CN221296254U (en) | 2023-10-11 | 2023-10-11 | Recovery device for ammonia in high-concentration ammonia-containing wastewater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221296254U true CN221296254U (en) | 2024-07-09 |
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ID=91741029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322735641.9U Active CN221296254U (en) | 2023-10-11 | 2023-10-11 | Recovery device for ammonia in high-concentration ammonia-containing wastewater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221296254U (en) |
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2023
- 2023-10-11 CN CN202322735641.9U patent/CN221296254U/en active Active
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