CN220283819U - Silica flour-containing wastewater treatment system - Google Patents
Silica flour-containing wastewater treatment system Download PDFInfo
- Publication number
- CN220283819U CN220283819U CN202320567916.XU CN202320567916U CN220283819U CN 220283819 U CN220283819 U CN 220283819U CN 202320567916 U CN202320567916 U CN 202320567916U CN 220283819 U CN220283819 U CN 220283819U
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- China
- Prior art keywords
- ultrafiltration
- sludge
- water
- silicon
- self
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- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 20
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title description 18
- 239000000377 silicon dioxide Substances 0.000 title description 9
- 235000013312 flour Nutrition 0.000 title description 5
- 238000000108 ultra-filtration Methods 0.000 claims abstract description 61
- 239000010802 sludge Substances 0.000 claims abstract description 53
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 51
- 239000002351 wastewater Substances 0.000 claims abstract description 43
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000012528 membrane Substances 0.000 claims abstract description 23
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 23
- 239000010703 silicon Substances 0.000 claims abstract description 23
- 239000000919 ceramic Substances 0.000 claims abstract description 22
- 238000004140 cleaning Methods 0.000 claims abstract description 22
- 239000011863 silicon-based powder Substances 0.000 claims abstract description 13
- 238000001035 drying Methods 0.000 claims description 9
- 238000003825 pressing Methods 0.000 claims description 5
- 208000005156 Dehydration Diseases 0.000 claims description 4
- 230000018044 dehydration Effects 0.000 claims description 4
- 238000006297 dehydration reaction Methods 0.000 claims description 4
- 238000000227 grinding Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 abstract description 5
- 238000004064 recycling Methods 0.000 description 11
- 235000012431 wafers Nutrition 0.000 description 5
- 229910021419 crystalline silicon Inorganic materials 0.000 description 4
- 239000008394 flocculating agent Substances 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 239000004065 semiconductor Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 230000001112 coagulating effect Effects 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 238000005189 flocculation Methods 0.000 description 2
- 230000016615 flocculation Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 239000002210 silicon-based material Substances 0.000 description 2
- 230000026676 system process Effects 0.000 description 2
- 238000009283 thermal hydrolysis Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011085 pressure filtration Methods 0.000 description 1
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The utility model discloses a silicon-containing wastewater treatment system, which comprises wastewater containing silicon powder, wherein the wastewater containing silicon powder flows into a wastewater collection device through a plurality of pipelines, the wastewater collection device is communicated with a self-cleaning filter to convey the collected wastewater to the self-cleaning filter, a water outlet of the self-cleaning filter is connected to a ceramic membrane ultrafiltration device, a plate frame dehydrator carries out sludge outward on dehydrated sludge, and the wastewater containing silicon is purified by ceramic membrane ultrafiltration and box type membrane filter press filtration by using a mechanical filtration method.
Description
Technical Field
The utility model belongs to the technical field related to silicon-containing wastewater treatment systems, and particularly relates to a silicon-containing wastewater treatment system.
Background
A silicon-containing wastewater treatment and recycling system in the silicon wafer industry utilizes a mechanical filtering method to purify silicon-containing wastewater through ceramic membrane ultrafiltration and pressure filtration of a van-type membrane filter press, and mainly comprises a collecting water tank, a ceramic membrane ultrafiltration device, a van-type filter pressing unit, a recycling water tank and the like.
The high-purity crystalline silicon material is widely applied to the semiconductor industry, and along with the rapid development of the solar energy industry and the semiconductor industry in China and even worldwide, the demand for raw material silicon wafers is rapidly increased. During the processing of silicon wafers, up to fifty percent of crystalline silicon is lost in the form of silicon powder, which is very thin in the silicon-containing wastewater and has a particle size in the range of one zero point to one millimeter. The traditional coagulating sedimentation method can treat wastewater to reach the discharge standard, but the precipitated silica powder mud contains a large amount of flocculating agents and cannot be recycled, so that a silica powder-containing wastewater treatment and recycling system is needed in the market to solve the problems faced at present.
Disclosure of Invention
The utility model aims to provide a silicon powder-containing wastewater treatment system, which aims to solve the problems that when the jacketing machine provided in the background technology is used, high-purity crystalline silicon materials are widely applied to the semiconductor industry, and along with the rapid development of the solar energy industry and the semiconductor industry in China and even worldwide, the demand for raw material silicon wafers is rapidly increased. During the processing of silicon wafers, up to fifty percent of crystalline silicon is lost in the form of silicon powder, which is very thin in the silicon-containing wastewater and has a particle size in the range of one zero point to one millimeter. The traditional coagulating sedimentation method can treat wastewater to reach the discharge standard, but the precipitated silica powder mud contains a large amount of flocculating agents and cannot be recycled, so that a silica powder-containing wastewater treatment and recycling system is needed in the market to solve the problems faced at present.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a contain silica flour wastewater treatment system, includes the waste water that contains silica flour, the waste water that contains silica flour flows into waste water collection device through a pipeline, waste water collection device and self-cleaning filter intercommunication carry the waste water of collecting to self-cleaning filter, self-cleaning filter's delivery port is connected to ceramic membrane ultrafiltration device, ceramic membrane ultrafiltration device is with filterable waste water separation ultrafiltration product water and ultrafiltration dense water, the direct reuse of ultrafiltration product water is in the workshop, the ultrafiltration dense water enters into the sludge concentration pond and carries out the filter pressing through the pressure filter, the sludge concentration pond is carried to the board frame hydroextractor and is dehydrated the desiccation, the board frame hydroextractor carries out mud outward with the mud of dehydration.
Preferably, the water outlet of the wastewater collection device is communicated with the self-cleaning filter to convey the collected wastewater to the self-cleaning filter.
Preferably, the self-cleaning filter is transported to the ceramic membrane ultrafiltration device through a pipeline after filtration.
Preferably, the ceramic membrane ultrafiltration device is used for obtaining ultrafiltration produced water and ultrafiltration concentrated water through ultrafiltration.
Preferably, the ultrafiltration product water can be directly recycled to the workshop for grinding, and the recycling is used for recycling the ultrafiltration product water in the workshop.
Preferably, the ultrafiltration concentrate is treated to be reused.
Preferably, the ultrafiltration concentrated water is subjected to high-temperature thermal hydrolysis and anaerobic treatment by a sludge concentration tank, the ultrafiltration concentrated water treated by the plate-frame dehydrator is subjected to drying and dehydration treatment, and the treated sludge is transported out by the plate-frame dehydrator.
Preferably, the sludge can be transported to a sludge storage bin by the sludge outward transport, a drying system is arranged in the sludge storage bin, and the sludge storage bin can be buried when needed.
Compared with the prior art, the utility model provides a silicon powder-containing wastewater treatment system, which has the following beneficial effects:
1. the system mainly comprises a collecting water tank, a ceramic membrane ultrafiltration device, a box type pressure separation filter press unit, a recycling water tank and the like, and no flocculating agent is added, so that the flocculation precipitation system process is reduced, concentrated water after the wastewater is subjected to ceramic ultrafiltration concentration is directly filtered by the filter press, the treatment steps and the medicament addition are reduced, the purity of the wastewater and the silicon mud is improved, the resource recycling rate is improved, and the investment cost is reduced.
2. When the sludge is treated, if the sludge is not utilized, the sludge can be uniformly placed in the sludge storage bin, a drying system is arranged in the sludge treatment bin, and when the sludge is required to be buried, the sludge in the sludge filling bin can be directly taken for landfill.
Drawings
FIG. 1 is a schematic diagram of a silicon powder-containing wastewater treatment system according to the present utility model.
In the figure: 1. waste water containing silicon powder; 2. a waste water collection device; 3. self-cleaning the filter; 4. a ceramic membrane ultrafiltration device; 5. ultrafiltering to produce water; 6. recycling the waste water in a workshop; 7. ultrafiltering the concentrated water; 8. a sludge concentration tank; 9. a plate frame dehydrator; 10. carrying out sludge; 11. a sludge storage bin; 12. a drying system; 13. and (5) landfill is carried out.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The utility model provides a silicon powder-containing wastewater treatment system shown in fig. 1, which comprises wastewater 1 containing silicon powder, wherein the wastewater 1 containing silicon powder flows into a wastewater collection device 2 through a pipeline, the wastewater collection device 2 is communicated with a self-cleaning filter 3 to convey the collected wastewater to the self-cleaning filter 3, a water outlet of the self-cleaning filter 3 is connected to a ceramic membrane ultrafiltration device 4, the ceramic membrane ultrafiltration device 4 divides the filtered wastewater into ultrafiltration produced water 5 and ultrafiltration concentrated water 7, the ultrafiltration produced water 5 is directly recycled to a workshop 6, the ultrafiltration concentrated water 7 enters a sludge concentration tank 8 to be subjected to filter pressing through a filter press, the sludge concentration tank 8 is conveyed to a plate-frame dehydrator 9 to be dehydrated, and the plate-frame dehydrator 9 carries out sludge outward 10 on dehydrated sludge.
The silicon-containing wastewater conveyed into the wastewater collection device 2 is pretreated to remove large particles, and then enters a ceramic membrane ultrafiltration membrane device to obtain separated ultrafiltration water 5 and ultrafiltration concentrated water 7, wherein the ultrafiltration water 5 is directly recycled, and the ultrafiltration concentrated water 7 is conveyed to a sludge concentration system and is recycled after being subjected to filter pressing by a plate frame dehydrator 9.
As shown in fig. 1, the water outlet of the wastewater collection device 2 is communicated with the self-cleaning filter 3 to convey the collected wastewater to the self-cleaning filter 3, the self-cleaning filter 3 is conveyed to the ceramic membrane ultrafiltration device 4 through a pipeline after being filtered, the ceramic membrane ultrafiltration device 4 is subjected to ultrafiltration to obtain ultrafiltration produced water 5 and ultrafiltration concentrated water 7, the ultrafiltration produced water 5 can be directly reused in a workshop 6 for grinding, and the ultrafiltration produced water 5 can be recycled in the workshop 6 for recycling the ultrafiltration produced water 5, and the ultrafiltration concentrated water 7 can be reused after being treated.
The system mainly comprises a collecting water tank, a ceramic membrane ultrafiltration device 4, a box type pressure separation filter press unit, a recycling water tank and the like, and no flocculating agent is added, so that the flocculation and precipitation system process is reduced, concentrated water after ceramic ultrafiltration concentration directly enters the filter press for filtration, the treatment steps and the medicament addition are reduced, and the purity of the wastewater and the silicon mud is improved.
As shown in fig. 1, the ultrafiltration concentrated water 7 is subjected to high-temperature thermal hydrolysis and anaerobic treatment by a sludge concentration tank 8, the ultrafiltration concentrated water 7 treated by a plate-frame dehydrator 9 enters and exits the drying and dehydration treatment, the treated sludge is carried out by the plate-frame dehydrator 9 to be transported out 10, the sludge after the treatment can be transported to a sludge storage bin 11 by the sludge transport 10, a drying system 12 is arranged in the sludge storage bin 11, and the sludge storage bin 11 can be buried 13 when required.
When the sludge is treated, if the sludge is not utilized, the sludge can be uniformly placed in the sludge storage bin 11, a drying system 12 is arranged in the sludge treatment bin, and when the sludge is required to be buried 13, the sludge in the sludge filling bin can be directly used for the landfill 13.
Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.
Claims (7)
1. The silicon-containing wastewater treatment system comprises wastewater (1) containing silicon powder, and is characterized in that: the waste water (1) containing silicon powder flows into a waste water collecting device (2) through a pipeline, the waste water collecting device (2) is communicated with a self-cleaning filter (3) to convey the collected waste water to the self-cleaning filter (3), a water outlet of the self-cleaning filter (3) is connected to a ceramic membrane ultrafiltration device (4), the ceramic membrane ultrafiltration device (4) divides the filtered waste water into ultrafiltration produced water (5) and ultrafiltration concentrated water (7), the ultrafiltration produced water (5) is directly recycled to a workshop (6), the ultrafiltration concentrated water (7) enters a sludge concentration tank (8) to be subjected to filter pressing through a filter press, the sludge concentration tank (8) is conveyed to a plate-frame dehydrator (9) to be dehydrated, and the plate-frame dehydrator (9) carries out sludge outward transportation (10).
2. A silicon-containing wastewater treatment system as set forth in claim 1 wherein: the water outlet of the wastewater collection device (2) is communicated with the self-cleaning filter (3) to convey the collected wastewater to the self-cleaning filter (3).
3. A silicon-containing wastewater treatment system as set forth in claim 2 wherein: the self-cleaning filter (3) is conveyed to the ceramic membrane ultrafiltration device (4) through a pipeline after being filtered.
4. A silicon-containing wastewater treatment system as set forth in claim 3 wherein: the ceramic membrane ultrafiltration device (4) is subjected to ultrafiltration to obtain ultrafiltration produced water (5) and ultrafiltration concentrated water (7).
5. A silicon-containing wastewater treatment system as set forth in claim 4 wherein: the ultrafiltration water (5) can be directly recycled to the workshop (6) for grinding, and the recycled ultrafiltration water (5) is recycled to the workshop (6).
6. A silicon-containing wastewater treatment system as set forth in claim 1 wherein: the ultrafiltration concentrated water (7) treated by the plate-and-frame dehydrator (9) enters and exits the drying and dehydration treatment, and the plate-and-frame dehydrator (9) carries out sludge outward transportation (10) on the treated sludge.
7. A silicon-containing wastewater treatment system as set forth in claim 6 wherein: the sludge transporting device is characterized in that the sludge transporting device is used for transporting the sludge after treatment to the sludge storage bin (11), a drying system (12) is arranged in the sludge storage bin (11), and the sludge storage bin (11) can be buried (13) when needed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320567916.XU CN220283819U (en) | 2023-03-22 | 2023-03-22 | Silica flour-containing wastewater treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320567916.XU CN220283819U (en) | 2023-03-22 | 2023-03-22 | Silica flour-containing wastewater treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220283819U true CN220283819U (en) | 2024-01-02 |
Family
ID=89343255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320567916.XU Active CN220283819U (en) | 2023-03-22 | 2023-03-22 | Silica flour-containing wastewater treatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220283819U (en) |
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2023
- 2023-03-22 CN CN202320567916.XU patent/CN220283819U/en active Active
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