CN220845807U - Silver powder waste water low consumption integrated treatment system - Google Patents
Silver powder waste water low consumption integrated treatment system Download PDFInfo
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- CN220845807U CN220845807U CN202322456113.XU CN202322456113U CN220845807U CN 220845807 U CN220845807 U CN 220845807U CN 202322456113 U CN202322456113 U CN 202322456113U CN 220845807 U CN220845807 U CN 220845807U
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- fixedly connected
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- distilled water
- silver powder
- preheater
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- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 239000002351 wastewater Substances 0.000 title claims abstract description 22
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 22
- 238000004062 sedimentation Methods 0.000 claims abstract description 21
- 230000001112 coagulating effect Effects 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 73
- 239000012153 distilled water Substances 0.000 claims description 45
- 239000012141 concentrate Substances 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 12
- 238000010521 absorption reaction Methods 0.000 claims description 11
- 238000003860 storage Methods 0.000 claims description 10
- 238000005406 washing Methods 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 5
- 239000012530 fluid Substances 0.000 claims description 5
- 239000002893 slag Substances 0.000 claims description 3
- 239000010842 industrial wastewater Substances 0.000 abstract description 3
- 238000004065 wastewater treatment Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 18
- 238000001704 evaporation Methods 0.000 description 14
- 230000008020 evaporation Effects 0.000 description 14
- 238000004519 manufacturing process Methods 0.000 description 10
- 239000000243 solution Substances 0.000 description 8
- 239000012528 membrane Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 239000010413 mother solution Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 3
- 230000009615 deamination Effects 0.000 description 3
- 238000006481 deamination reaction Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 235000011114 ammonium hydroxide Nutrition 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 239000011550 stock solution Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 206010039509 Scab Diseases 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000008394 flocculating agent Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000012452 mother liquor Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011020 pilot scale process Methods 0.000 description 1
- 238000004094 preconcentration Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 230000005476 size effect Effects 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
Landscapes
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The utility model discloses a silver powder wastewater low-consumption comprehensive treatment system, which relates to the technical field of industrial wastewater treatment and comprises a coagulating sedimentation tank, a reverse osmosis concentration device, a second-stage A/O reactor and a first-stage A/O reactor.
Description
Technical Field
The utility model relates to the technical field of industrial wastewater treatment, in particular to a silver powder wastewater low-consumption comprehensive treatment system.
Background
The ultrafine silver powder is widely used in various industrial fields due to the specific quantum size effect and surface effect and the excellent electric conductivity, thermal conductivity and chemical stability of silver. The silver powder is prepared by a liquid phase reduction method in industry, the liquid phase reduction method also becomes one of research hot spots for preparing the silver powder, and waste water generated in the preparation process contains COD (chemical oxygen demand), sulfate, ammonia nitrogen and nitrate nitrogen with extremely high concentration and also contains refractory organic matters, so that the silver powder is industrial waste water which is difficult to treat. According to the related literature data, the PH value of the wastewater is firstly regulated to be strong alkaline, ammonia nitrogen in the wastewater is separated to obtain ammonia water through stripping deamination, and the deaminated liquid enters a multi-effect evaporation device for evaporation and concentration. In the stripping and deamination process of the system, a large amount of liquid alkali is required to be consumed, the stripping and deamination device and the multi-effect evaporation device are required to consume a large amount of water vapor, the obtained ammonia water also carries a large amount of COD, the economic value is greatly reduced, the problem of how to recycle is also a necessary problem, and the system has no industrial implementation value.
Through the pilot scale, the waste water passes through the membrane concentration and evaporation system, COD in the waste water can be effectively separated, and the produced water/distilled water is subjected to further biochemical treatment, so that the discharge standard can be met, the silver powder waste water low-treatment cost treatment is realized, and the industrial implementation value is realized. The membrane concentration device can be selected and configured according to the actual water treatment amount, and is used as an optional item.
Disclosure of utility model
The utility model aims to provide a silver powder wastewater low-consumption comprehensive treatment system so as to solve the technical problems.
In order to achieve the above object, the present utility model provides the following technical solutions: a silver powder waste water low consumption integrated treatment system comprises a coagulating sedimentation tank, a reverse osmosis concentration device, a second-stage A/O reactor and a first-stage A/O reactor, wherein the coagulating sedimentation tank is fixedly connected with the reverse osmosis concentration device, one side of the reverse osmosis concentration device is fixedly connected with a water production temporary storage tank and a concentrated liquid tank, one side of the water production temporary storage tank is fixedly connected with a water production conveying pump and a distilled water cooler, one side of the concentrated liquid tank is fixedly connected with an MVR feeding pump, the second-stage A/O reactor is fixedly connected with the first-stage A/O reactor, and the water production conveying pump is fixedly connected with the second-stage A/O reactor and the first-stage A/O reactor.
Further, one side fixedly connected with charge pump of coagulating sedimentation tank, the bottom fixedly connected with plate and frame pressure filter of coagulating sedimentation tank, one side fixedly connected with former fluid reservoir of charge pump, one side and reverse osmosis enrichment facility fixed connection of former fluid reservoir are kept away from to the coagulating sedimentation tank.
Further, the bottom of the distilled water cooler is sequentially and fixedly connected with a distilled water preheater, a non-condensable gas preheater and a steam preheater, the bottom of the distilled water preheater is fixedly connected with a distilled water pump, the bottom of the non-condensable gas preheater is fixedly connected with a distilled water tank, the distilled water pump is fixedly connected with the distilled water tank, and the top of the steam preheater is fixedly connected with a separator.
Further, one side of the bottom of the distilled water preheater, which is far away from the distilled water pump, is fixedly connected with the MVR feed pump, the top of the non-condensable gas preheater is fixedly connected with the vacuum pump and the forced evaporator, one side of the vacuum pump is fixedly connected with the absorption tower, and one side of the absorption tower is fixedly connected with the circulating pump.
Further, the top fixedly connected with gas washing tower of separator, one side fixedly connected with vapor compressor of gas washing tower, vapor compressor's bottom fixedly connected with forced evaporator, forced evaporator's bottom and distilled water pitcher fixed connection.
Further, the bottom of the forced evaporator is fixedly connected with a forced circulation pump and a concentrate pump, the bottom of the separator is fixedly connected with a concentrate drying device with the top of the forced circulation pump and the concentrate pump fixedly connected with the concentrate pump, and the bottom of the concentrate drying device is provided with a slag trough.
Compared with the prior art, the silver powder wastewater low-consumption comprehensive treatment system provided by the utility model has the following beneficial effects:
(1) The MVR forced evaporator adopts a single-flow Cheng Lie tubular heat exchanger, has the advantages of anti-blocking and anti-coking, and is extremely suitable for the evaporation treatment of silver powder wastewater;
(2) The evaporation separator adopts a design with low rising flow rate and high separation height, the rising flow rate is less than or equal to 0.8m/s, the length-diameter ratio is more than or equal to 2.5, a two-stage defoaming device is designed, a first-stage baffle plate is used for defoaming, large particles are removed to carry liquid drops, a second-stage screen is used for defoaming, fine particles are removed to carry liquid drops, the secondary steam separation effect is ensured to the greatest extent, the distilled water quality is ensured, and the processing load of a subsequent biochemical processing device is reduced;
(3) Compared with the traditional roller drier, the concentrated solution drier adopts a negative pressure low temperature drier, and the ton water evaporation steam consumption is less than or equal to 1.2t, so that the steam consumption is further saved, the treatment cost is reduced, the scabbing is not easy, and the mud water content is less than or equal to 12 percent;
(4) The reverse osmosis membrane adopts a DTRO membrane, and the design of a large flow channel ensures that the reverse osmosis membrane is not easy to block in the operation process of the reverse osmosis membrane, and ensures the treatment effect and the service life of the reverse osmosis membrane;
(5) The inlet of the compressor is provided with a gas washing tower, so that the material does not directly blow the steam compressor under the condition of material mixing in the evaporation process, and the impeller of the steam compressor is protected;
(6) The defoaming agent adding device is arranged, so that the problem that the system cannot normally operate due to the foaming problem in the material evaporation process is avoided;
(7) The absorption tower adopts the pall ring packing absorption tower, so that the absorption efficiency and effect of noncondensable gas are ensured.
(8) Before the mother solution enters the evaporation, reverse osmosis concentration decrement is adopted first, so that the evaporation water quantity is reduced, and the wastewater treatment cost is greatly reduced. The reverse osmosis concentration device can be selected and matched according to the actual water quantity, so that the optimal design working condition of the MVR system is ensured.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings required for the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.
FIG. 1 is a schematic diagram of an overall structure according to an embodiment of the present utility model;
reference numerals illustrate:
1. A stock solution tank; 2. a feed pump; 3. a plate and frame filter press; 4. a coagulating sedimentation tank; 5. reverse osmosis concentration device; 6. a concentrate tank; 7. MVR feed pump; 8. a temporary storage tank for water production; 9. a produced water delivery pump; 10. a secondary A/O reactor; 11. a first stage A/O reactor; 12. a distilled water cooler; 13. a vacuum pump; 14. an absorption tower; 15. a circulation pump; 16. a vapor compressor; 17. a scrubber tower; 18. a separator; 19. a concentrated solution drying device; 20. a slag trough; 21. a distilled water preheater; 22. a non-condensable gas preheater; 23. a steam preheater; 24. a forced evaporator; 25. a distilled water pump; 26. a distilled water tank; 27. a forced circulation pump; 28. a concentrate pump.
Detailed Description
In order to make the technical scheme of the present utility model better understood by those skilled in the art, the present utility model will be further described in detail with reference to the accompanying drawings.
Referring to fig. 1, a silver powder wastewater low-consumption comprehensive treatment system comprises a coagulating sedimentation tank 4, a reverse osmosis concentration device 5, a secondary A/O reactor 10 and a primary A/O reactor 11, wherein the coagulating sedimentation tank 4 is fixedly connected with the reverse osmosis concentration device 5, one side of the reverse osmosis concentration device 5 is fixedly connected with a water production temporary storage tank 8 and a concentration liquid tank 6, one side of the water production temporary storage tank 8 is fixedly connected with a water production conveying pump 9 and a distilled water cooler 12, one side of the concentration liquid tank 6 is fixedly connected with an MVR feed pump 7, the secondary A/O reactor 10 is fixedly connected with the primary A/O reactor 11, and the water production conveying pump 9 is fixedly connected with the secondary A/O reactor 10 and the primary A/O reactor 11.
Referring to fig. 1, a feed pump 2 is fixedly connected to one side of a coagulating sedimentation tank 4, a plate-and-frame filter press 3 is fixedly connected to the bottom of the coagulating sedimentation tank 4, a raw liquid tank 1 is fixedly connected to one side of the feed pump 2, one side of the coagulating sedimentation tank 4, which is far away from the raw liquid tank 1, is fixedly connected to a reverse osmosis concentration device 5, a distilled water preheater 21, a non-condensable gas preheater 22 and a steam preheater 23 are sequentially and fixedly connected to the bottom of the distilled water cooler 12, a distilled water pump 25 is fixedly connected to the bottom of the distilled water preheater 21, a distilled water tank 26 is fixedly connected to the bottom of the non-condensable gas preheater 22, the distilled water pump 25 is fixedly connected to the distilled water tank 26, a separator 18 is fixedly connected to the top of the steam preheater 23, one side of the distilled water preheater 21 is fixedly connected to the MVR feed pump 7, a vacuum pump 13 and a forced evaporator 24 are fixedly connected to the top of the non-condensable gas preheater 22, an absorption tower 14 is fixedly connected to one side of the vacuum pump 15, a gas tower 17 is fixedly connected to the top of the separator 18, a vapor compressor 16 is fixedly connected to the bottom of the forced air tower 16 is fixedly connected to the forced air pump 24, a forced air pump 28 is fixedly connected to the bottom of the forced air pump 28, and a forced air pump 28 is fixedly connected to the bottom of the forced air pump 28, and the forced air pump is fixedly connected to the forced air pump 28.
Working principle: when the silver powder mother solution is used, the silver powder mother solution is temporarily stored in a raw solution tank, a feed pump is used for conveying the silver powder mother solution to a coagulating sedimentation tank for coagulating sedimentation, a flocculating agent PAM is added to the coagulating sedimentation tank, fine suspended matters in the mother solution are precipitated at the bottom of the sedimentation tank, after supernatant fluid enters a reverse osmosis concentration device for pre-concentration by 2-4 times, the concentrated solution enters an MVR evaporation device for further concentration, and produced water is discharged to a produced water temporary storage tank. The MVR evaporation device feed sequentially passes through a distilled water preheater, a non-condensable gas preheater and a steam preheater, and after heat exchange with MVR distilled water, non-condensable gas and preheated steam respectively, the temperature reaches a close boiling point state, the vapor enters a forced circulation evaporator for evaporation, secondary steam generated by a separator is subjected to secondary washing by a gas washing tower and then enters a steam compressor for pressurizing and heating, and the secondary steam after heating enters the forced circulation heater for use as heating steam. The steam is condensed into distilled water after heat exchange and is collected in a distilled water tank, and the distilled water is sequentially discharged to a water production temporary storage tank after heat exchange and cooling with MVR feeding and cooling water through a distilled water preheater and a distilled water cooler. After the silver powder mother liquor is subjected to two-stage concentration, the concentration multiple is about 8-10 times, and the concentrated solution is discharged to a concentrated solution desiccator for desiccation treatment, so that desiccated sludge with the water content lower than 12% is obtained, and the desiccated sludge is subjected to outward transportation treatment. MVR noncondensable gas is discharged out of the system after being absorbed by secondary absorption in a tail gas absorption tower through a vacuum pump after heat exchange between the noncondensable gas preheater and the stock solution. MVR distilled water, reverse osmosis produced water and silver powder washing water are mixed in a produced water temporary storage tank, enter a two-stage AO biochemical device for advanced treatment, COD, ammonia nitrogen and total nitrogen in the wastewater are further removed, and are discharged after reaching the discharge standard.
While certain exemplary embodiments of the present utility model have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the utility model, which is defined by the appended claims.
Claims (6)
1. The utility model provides a silver powder waste water low consumption integrated treatment system, includes coagulating sedimentation tank (4), reverse osmosis enrichment facility (5), second grade A/O reactor (10), one-level A/O reactor (11), its characterized in that, coagulating sedimentation tank (4) and reverse osmosis enrichment facility (5) fixed connection, one side fixedly connected with of reverse osmosis enrichment facility (5) produces water temporary storage tank (8), concentrate fluid reservoir (6), one side fixedly connected with of producing water temporary storage tank (8) produces water delivery pump (9), distilled water cooler (12), one side fixedly connected with MVR feed pump (7) of concentrate fluid reservoir (6), second grade A/O reactor (10) and one-level A/O reactor (11) fixed connection, produce water delivery pump (9) and second grade A/O reactor (10), one-level A/O reactor (11) fixed connection.
2. The silver powder wastewater low-consumption comprehensive treatment system according to claim 1, wherein one side of the coagulating sedimentation tank (4) is fixedly connected with a feed pump (2), the bottom of the coagulating sedimentation tank (4) is fixedly connected with a plate-and-frame filter press (3), one side of the feed pump (2) is fixedly connected with a raw liquid tank (1), and one side of the coagulating sedimentation tank (4) away from the raw liquid tank (1) is fixedly connected with a reverse osmosis concentration device (5).
3. The silver powder wastewater low-consumption comprehensive treatment system according to claim 1, wherein the bottom of the distilled water cooler (12) is sequentially and fixedly connected with a distilled water preheater (21), a non-condensable gas preheater (22) and a steam preheater (23), the bottom of the distilled water preheater (21) is fixedly connected with a distilled water pump (25), the bottom of the non-condensable gas preheater (22) is fixedly connected with a distilled water tank (26), the distilled water pump (25) is fixedly connected with the distilled water tank (26), and the top of the steam preheater (23) is fixedly connected with a separator (18).
4. The silver powder wastewater low-consumption comprehensive treatment system according to claim 3, wherein one side, far away from a distilled water pump (25), of the bottom of the distilled water preheater (21) is fixedly connected with an MVR feed pump (7), the top of the non-condensable gas preheater (22) is fixedly connected with a vacuum pump (13) and a forced evaporator (24), one side of the vacuum pump (13) is fixedly connected with an absorption tower (14), and one side of the absorption tower (14) is fixedly connected with a circulating pump (15).
5. The silver powder wastewater low-consumption comprehensive treatment system according to claim 3, wherein a gas washing tower (17) is fixedly connected to the top of the separator (18), a vapor compressor (16) is fixedly connected to one side of the gas washing tower (17), a forced evaporator (24) is fixedly connected to the bottom of the vapor compressor (16), and the bottom of the forced evaporator (24) is fixedly connected to a distilled water tank (26).
6. The silver powder wastewater low-consumption comprehensive treatment system according to claim 5, wherein a forced circulation pump (27) and a concentrate pump (28) are fixedly connected to the bottom of the forced evaporator (24), the bottom of the separator (18) is fixedly connected with the forced circulation pump (27) and the concentrate pump (28), a concentrate drying device (19) is fixedly connected to the top of the concentrate pump (28), and a slag trough (20) is formed in the bottom of the concentrate drying device (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322456113.XU CN220845807U (en) | 2023-09-11 | 2023-09-11 | Silver powder waste water low consumption integrated treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322456113.XU CN220845807U (en) | 2023-09-11 | 2023-09-11 | Silver powder waste water low consumption integrated treatment system |
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| Publication Number | Publication Date |
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| CN220845807U true CN220845807U (en) | 2024-04-26 |
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| CN202322456113.XU Active CN220845807U (en) | 2023-09-11 | 2023-09-11 | Silver powder waste water low consumption integrated treatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220845807U (en) |
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- 2023-09-11 CN CN202322456113.XU patent/CN220845807U/en active Active
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