CN106336056A - Polycrystal slice reclaimed water recycling method - Google Patents
Polycrystal slice reclaimed water recycling method Download PDFInfo
- Publication number
- CN106336056A CN106336056A CN201610976767.7A CN201610976767A CN106336056A CN 106336056 A CN106336056 A CN 106336056A CN 201610976767 A CN201610976767 A CN 201610976767A CN 106336056 A CN106336056 A CN 106336056A
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- Prior art keywords
- water
- polycrystalline
- described middle
- section
- recoverying
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- 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
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J11/00—Recovery or working-up of waste materials
- C08J11/04—Recovery or working-up of waste materials of polymers
- C08J11/06—Recovery or working-up of waste materials of polymers without chemical reactions
-
- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
- C02F1/26—Treatment of water, waste water, or sewage by extraction
-
- 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
- C02F2001/007—Processes including a sedimentation step
-
- 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
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
- C02F2103/346—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from semiconductor processing, e.g. waste water from polishing of wafers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2371/00—Characterised by the use of polyethers obtained by reactions forming an ether link in the main chain; Derivatives of such polymers
- C08J2371/02—Polyalkylene oxides
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Sustainable Development (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The invention discloses a polycrystal slice reclaimed water recycling method. The polycrystal slice reclaimed water recycling method comprises the steps that reclaimed water produced by polycrystal slices is centralized to a transfer pool; multiple communicated reclaimed water pools are utilized to conduct free settling on silicon powder and silicon carbide powder in the water; at preset temperature, the reclaimed water is subjected to filter pressing, and produced clear water is delivered to a water storage device; polyethylene glycol is extracted from the reclaimed water, plate-and-frame filter pressing, decoloration, ion exchange and distillation are conducted to form a finished product polyethylene glycol for polycrystal slices. By the adoption of the polycrystal slice reclaimed water recycling method, the reclaimed water can be purified, multiple times of recycling can be achieved, the polyethylene glycol in the reclaimed water is purified, water resources are saved, and resource utilization maximization can be also achieved.
Description
Technical field
The invention belongs to photovoltaic apparatus technical field, the recoverying and utilizing method of water in more particularly to a kind of polycrystalline section.
Background technology
Photovoltaic enterprise, in crystal silicon section manufacture process, creates substantial amounts of containing high concentration cod and outstanding at present
The middle water of float, middle Organic substance in water species is various, is not easily recycled utilization, causes very big pressure to environmental protection, creates height
High sewerage disposing expense.A kind of mode of the prior art is by permeating water in film process, but treatment effect is undesirable, oozes
Concentrated water electrical conductivity after permeable membrane is processed is very difficult to remove, and the anti-cleaning of permeable membrane is more difficult simultaneously, and this is that exist in photovoltaic enterprise
Persistent ailment, be unfavorable for the purport of the cost efficiency of photovoltaic enterprise simultaneously.
Content of the invention
For solving the above problems, the invention provides a kind of polycrystalline section in water recoverying and utilizing method, in can purifying
Water, realizes recycled for multiple times, and the polyethylene glycol in water in purifying, both saving water resources, enables the utilization of resources the most again
Bigization.
The recoverying and utilizing method of water in a kind of polycrystalline section that the present invention provides, comprising:
The middle water that polycrystalline section is produced focuses on transfer pond；
Using the multiple middle pond of connection, free settling is carried out to the silica flour in described middle water and carborundum powder；
Under preset temperature, press filtration is carried out to described middle water, and the clear water of generation is sent to water storage device；
Extract polyethylene glycol from described middle water, and carry out plate compression, decolouring, ion exchange and distillation, formed and be used for
The finished product polyethylene glycol of polycrystalline section.
Preferably, in the recoverying and utilizing method of water in the section of above-mentioned polycrystalline,
After the described middle water producing polycrystalline section focuses on transfer pond, also include:
Using membrane pump, described middle water is squeezed into described middle pond.
Preferably, in the recoverying and utilizing method of water in the section of above-mentioned polycrystalline,
The scope of described preset temperature is 30 DEG C to 40 DEG C.
Preferably, in the recoverying and utilizing method of water in the section of above-mentioned polycrystalline,
Described press filtration is carried out to described middle water it is:
Under conditions of pressure range is for 0.2mpa to 0.6mpa, using the filter cloth pair for 6mm/s to 44mm/s for the air penetrability
Middle water carries out press filtration.
Preferably, in the recoverying and utilizing method of water in the section of above-mentioned polycrystalline,
Before extracting polyethylene glycol from described middle water, also include:
Online recycling silicon mud from described middle water.
Preferably, in the recoverying and utilizing method of water in the section of above-mentioned polycrystalline,
Before described extraction polyethylene glycol from described middle water, also include:
Detect the organic matter percentage composition in described middle water using online moisture detector.
By foregoing description, the recoverying and utilizing method of water in the polycrystalline section that the present invention provides, due to including: will be many
The middle water that brilliant section produces focuses on transfer pond；Using the multiple middle pond of connection, to the silica flour in described middle water and carborundum
Powder carries out free settling；Under preset temperature, press filtration is carried out to described middle water, and the clear water of generation is sent to water storage device；
Extract polyethylene glycol from described middle water, and carry out plate compression, decolouring, ion exchange and distillation, formed for polycrystalline section
Finished product polyethylene glycol, therefore, it is possible to water in purifying, realize recycled for multiple times, and the polyethylene glycol in water in purifying, both saved
About water resource, enables the maximization of the utilization of resources again.
Brief description
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
Have technology description in required use accompanying drawing be briefly described it should be apparent that, drawings in the following description be only this
Inventive embodiment, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
The accompanying drawing providing obtains other accompanying drawings.
The schematic diagram of the recoverying and utilizing method of water in the first polycrystalline section that Fig. 1 provides for the embodiment of the present application.
Specific embodiment
The core concept of the present invention is to provide a kind of recoverying and utilizing method of water in polycrystalline section, water in can purifying,
Realize recycled for multiple times, and the polyethylene glycol in water in purifying, both saving water resources, enable the maximum of the utilization of resources again
Change.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation description is it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of not making creative work
Embodiment, broadly falls into the scope of protection of the invention.
In the first polycrystalline section that the embodiment of the present application provides, the recoverying and utilizing method of water is as shown in figure 1, Fig. 1 is this Shen
Please in the first polycrystalline section of providing of embodiment the recoverying and utilizing method of water schematic diagram, the method comprises the steps:
S1: the middle water that polycrystalline section is produced focuses on transfer pond；
In this step, described transfer pond is exactly the transfer pond in polycrystalline slicing workshop, due in polycrystalline slicing processes
Need the participation of chemical reagent, the middle water after therefore this section contains high concentration cod, generally requires and it is carried out at chemistry
Just can be discharged in environment after reason, and just it can be carried out in the present embodiment with relevant treatment, reduce the adverse effect to environment,
It is further to note that the middle water containing other organic matters can not be mixed in this transfer pond, especially degumming organic matter and
Silicon slice detergent.
S2: using the multiple middle pond of connection, free settling is carried out to the silica flour in described middle water and carborundum powder；
In this step, used middle pond can be preferably three, but is not limited to three, can be bottom phase interconnection
Logical, one of middle pond has temp. control function.It is emphasized that this free settling, not using flocculant, keeps away
Exempt from the introducing of chemical impurity.
S3: under preset temperature, press filtration is carried out to described middle water, and the clear water of generation is sent to water storage device；
It should be noted that the solid particle in middle water raises with temperature, it is more violent that Brownian movement can become, temperature
The middle water that too low plate compression goes out is muddy, and temperature is too high, and energy consumption is higher, simultaneously the easy fever expansion of the solids in sheet frame,
It is thus desirable to appropriate control is carried out to temperature.
S4: extract polyethylene glycol from described middle water, and carry out plate compression, decolouring, ion exchange and distillation, formed and use
Finished product polyethylene glycol in polycrystalline section.
In this step, the finished product polyethylene glycol obtaining can continue to for polycrystalline slicing processes it is achieved that waste recovery
Recycle, reduce production cost, also reduce the adverse effect to environment.
By foregoing description, the recoverying and utilizing method of water in the above-mentioned polycrystalline section that the embodiment of the present application provides, by
In inclusion: the middle water that polycrystalline section is produced focuses on transfer pond；Using the multiple middle pond of connection, to the silicon in described middle water
Powder and carborundum powder carry out free settling；Under preset temperature, press filtration is carried out to described middle water, and the clear water of generation is sent to
Water storage device；Extract polyethylene glycol from described middle water, and carry out plate compression, decolouring, ion exchange and distillation, formed and be used for
The finished product polyethylene glycol of polycrystalline section, therefore, it is possible to water in purifying, realizes recycled for multiple times, and the poly- second two in water in purifying
Alcohol, both saving water resources, enable the maximization of the utilization of resources again.
In the second polycrystalline section that the embodiment of the present application provides, the recoverying and utilizing method of water, is in the first polycrystalline above-mentioned
On the basis of the recoverying and utilizing method of water in section, also include following technical characteristic:
After the described middle water producing polycrystalline section focuses on transfer pond, also include:
Using membrane pump, described middle water is squeezed into described middle pond.
It should be noted that when transfer water amount increases, opening the switch of membrane pump, regulating induction air flow ratio, in
Water pipeline is beaten to middle pond, thus can timely remove the middle water in workshop, it is to avoid spill-over is it is ensured that Workshop Production is normally transported
OK.
In the third polycrystalline section that the embodiment of the present application provides, the recoverying and utilizing method of water, is in the first polycrystalline above-mentioned
On the basis of the recoverying and utilizing method of water in section, also include following technical characteristic:
The scope of described preset temperature is 30 DEG C to 40 DEG C.
In this temperature range, it is ensured that sedimentation has more preferable effect.
In the 4th kind of polycrystalline section that the embodiment of the present application provides, the recoverying and utilizing method of water, is in the third polycrystalline above-mentioned
On the basis of the recoverying and utilizing method of water in section, also include following technical characteristic:
Described press filtration is carried out to described middle water it is:
Under conditions of pressure range is for 0.2mpa to 0.6mpa, using the filter cloth pair for 6mm/s to 44mm/s for the air penetrability
Middle water carries out press filtration.
It should be noted that the too conference of the air penetrability of filter cloth makes plate compression liquid phase color blackening, too little solid can be made little
Particle can block filter opening, cause sheet frame cannot normal work it is therefore desirable to be arranged to OK range as above.It is clear that press filtration produces
Water delivers to the high-level water storage bucket equipped with fluid level controller by pipeline, uses for workshop, when slicing workshop needs to use water, only needs
Open valve it is possible to use at any time, and, this high-level water storage bucket can save the space in workshop.
The recoverying and utilizing method of water in the 5th kind of polycrystalline section that the embodiment of the present application provides, be above-mentioned the first to the
In the recoverying and utilizing method of water in the section of four kinds of polycrystalline on the basis of any one, also include following technical characteristic:
Before extracting polyethylene glycol from described middle water, also include:
Online recycling silicon mud from described middle water, this silicon mud can collect, and produces economic benefit.
The recoverying and utilizing method of water in the 6th kind of polycrystalline section that the embodiment of the present application provides, be above-mentioned the first to the
In the recoverying and utilizing method of water in the section of four kinds of polycrystalline on the basis of any one, also include following technical characteristic:
Before described extraction polyethylene glycol from described middle water, also include:
Detect the organic matter percentage composition in described middle water using online moisture detector.
It should be noted that the organic matter percentage composition of middle water not can exceed that 6%, if exceed cleaning silicon chip will be caused
Dirty piece impact, it is detected hence with online moisture detector, it is to avoid silicon chip is had a negative impact.
In sum, after using above-mentioned process step, in polycrystalline section, water has reached the purpose of cycling and reutilization, simultaneously
Significantly reduce environmental protection pressure, there is considerable economic benefit and social benefit.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses the present invention.
Multiple modifications to these embodiments will be apparent from for those skilled in the art, as defined herein
General Principle can be realized without departing from the spirit or scope of the present invention in other embodiments.Therefore, the present invention
It is not intended to be limited to the embodiments shown herein, and be to fit to and principles disclosed herein and features of novelty phase one
The scope the widest causing.
Claims (6)
1. during a kind of polycrystalline is cut into slices, the recoverying and utilizing method of water is it is characterised in that include:
The middle water that polycrystalline section is produced focuses on transfer pond；
Using the multiple middle pond of connection, free settling is carried out to the silica flour in described middle water and carborundum powder；
Under preset temperature, press filtration is carried out to described middle water, and the clear water of generation is sent to water storage device；
Extract polyethylene glycol from described middle water, and carry out plate compression, decolouring, ion exchange and distillation, formed for polycrystalline
The finished product polyethylene glycol of section.
2. in polycrystalline according to claim 1 section water recoverying and utilizing method it is characterised in that
After the described middle water producing polycrystalline section focuses on transfer pond, also include:
Using membrane pump, described middle water is squeezed into described middle pond.
3. in polycrystalline according to claim 1 section water recoverying and utilizing method it is characterised in that
The scope of described preset temperature is 30 DEG C to 40 DEG C.
4. in polycrystalline according to claim 3 section water recoverying and utilizing method it is characterised in that described to described middle water
Carrying out press filtration is:
Under conditions of pressure range is for 0.2mpa to 0.6mpa, using the filter cloth centering water for 6mm/s to 44mm/s for the air penetrability
Carry out press filtration.
5. according to any one of claim 1-4 polycrystalline section in water recoverying and utilizing method it is characterised in that
Before extracting polyethylene glycol from described middle water, also include:
Online recycling silicon mud from described middle water.
6. according to any one of claim 1-4 polycrystalline section in water recoverying and utilizing method it is characterised in that
Before described extraction polyethylene glycol from described middle water, also include:
Detect the organic matter percentage composition in described middle water using online moisture detector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610976767.7A CN106336056A (en) | 2016-11-07 | 2016-11-07 | Polycrystal slice reclaimed water recycling method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610976767.7A CN106336056A (en) | 2016-11-07 | 2016-11-07 | Polycrystal slice reclaimed water recycling method |
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| CN106336056A true CN106336056A (en) | 2017-01-18 |
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| CN201610976767.7A Pending CN106336056A (en) | 2016-11-07 | 2016-11-07 | Polycrystal slice reclaimed water recycling method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107265695A (en) * | 2017-07-12 | 2017-10-20 | 晶科能源有限公司 | A kind of crystalline silicon diamond wire saw slug cutting fluid recovery method and system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101905938A (en) * | 2010-08-17 | 2010-12-08 | 黄立军 | Method for recycling silicon chip cutting waste fluid |
| CN105152438A (en) * | 2015-07-28 | 2015-12-16 | 江西申山能源科技有限公司 | Silicon wafer cutting sewage treatment method |
-
2016
- 2016-11-07 CN CN201610976767.7A patent/CN106336056A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101905938A (en) * | 2010-08-17 | 2010-12-08 | 黄立军 | Method for recycling silicon chip cutting waste fluid |
| CN105152438A (en) * | 2015-07-28 | 2015-12-16 | 江西申山能源科技有限公司 | Silicon wafer cutting sewage treatment method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107265695A (en) * | 2017-07-12 | 2017-10-20 | 晶科能源有限公司 | A kind of crystalline silicon diamond wire saw slug cutting fluid recovery method and system |
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Application publication date: 20170118 |