CN115259493A - Wastewater treatment device and wastewater treatment method for diamond wire slicing machine - Google Patents
Wastewater treatment device and wastewater treatment method for diamond wire slicing machine Download PDFInfo
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- CN115259493A CN115259493A CN202210876054.9A CN202210876054A CN115259493A CN 115259493 A CN115259493 A CN 115259493A CN 202210876054 A CN202210876054 A CN 202210876054A CN 115259493 A CN115259493 A CN 115259493A
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- 229910003460 diamond Inorganic materials 0.000 title claims abstract description 61
- 239000010432 diamond Substances 0.000 title claims abstract description 61
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 47
- 239000002351 wastewater Substances 0.000 claims abstract description 177
- 239000007788 liquid Substances 0.000 claims abstract description 165
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 74
- 238000001914 filtration Methods 0.000 claims abstract description 23
- 238000002156 mixing Methods 0.000 claims description 78
- 239000000047 product Substances 0.000 claims description 53
- 239000000706 filtrate Substances 0.000 claims description 21
- 238000002360 preparation method Methods 0.000 claims description 20
- 238000005520 cutting process Methods 0.000 claims description 17
- 239000002253 acid Substances 0.000 claims description 15
- 238000011282 treatment Methods 0.000 claims description 13
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 8
- 229910052760 oxygen Inorganic materials 0.000 claims description 8
- 239000001301 oxygen Substances 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 8
- 230000001954 sterilising effect Effects 0.000 claims description 7
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- 239000003153 chemical reaction reagent Substances 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
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- 125000004122 cyclic group Chemical group 0.000 abstract description 3
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 10
- 238000004064 recycling Methods 0.000 description 7
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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
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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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
- 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
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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
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/005—Processes using a programmable logic controller [PLC]
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/11—Turbidity
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- 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
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
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Abstract
The invention provides a wastewater treatment device and a wastewater treatment method for a diamond wire slicing machine, wherein the wastewater treatment device for the diamond wire slicing machine comprises: the inlet end of the waste water collecting device is connected with the water outlet end of the diamond wire slicing machine; the inlet end of the wastewater filtering device is connected with the outlet end of the wastewater collecting device, and the wastewater filtering device is connected with a pH adjusting device; clear liquid collection device, clear liquid collection device's entrance point connection waste water filter equipment's exit end, clear liquid collection device's exit end is connected the inlet end of buddha's warrior attendant line slicer, be equipped with ultraviolet sterilizer in the clear liquid collection device, clear liquid collection device still is connected with the pure water supply source. According to the wastewater treatment device and the wastewater treatment process for the diamond wire slicer, provided by the embodiment of the invention, the wastewater treatment generated by the diamond wire slicer can meet the requirements of cyclic utilization on conductivity, pH value and organic matter content.
Description
Technical Field
The invention relates to the technical field of photovoltaic production, in particular to a wastewater treatment device and a wastewater treatment method for a diamond wire slicing machine.
Background
At present, a silicon rod with a certain length is cut into a silicon wafer by a solar-grade silicon wafer mainly through a diamond wire and a special cutting machine in a grinding cutting mode, a large amount of silicon powder can be generated in a cutting seam due to movement and rotation of a steel wire in the cutting process, the silicon powder generated in the cutting seam needs to be wetted and dispersed by using a large amount of pure water and a certain amount of cooling liquid, and the diamond wire is cleaned and cooled to ensure good cutting capacity of the diamond wire. Silicon powder and filtrate are separated from waste water generated after cutting through a filter press, the filtrate is directly discharged into a sewage station, and the waste water is discharged after being treated by an AO process and meeting the environmental-friendly discharge requirement.
However, with the rapid development of the photovoltaic technology, the silicon wafer cutting technology is continuously iterated in the directions of large-size, thin-slice, thin-line and the like, the single-machine monthly capacity is increased from the original 50 ten thousand sheets to 110 ten thousand, the cooling liquid is also converted from the original low concentration to the high concentration, and the COD is increased from the original 40 ten thousand to 110-180 ten thousand to improve the performance of the cooling liquid in the cutting process, so that the problems of large water resource use, increased difficulty in sewage treatment and the like are also brought. On the premise that water resources are increasingly severe, how to reduce the consumption of water resources of enterprises, improve the sewage treatment capacity and realize the cyclic utilization of the water resources becomes crucial.
The current cutting production mode has the following problems:
(1) The conductivity and pH of the wastewater treated by the water treatment technology cannot meet the requirements of production water, and the wastewater is discharged after being treated to meet the environmental-friendly discharge requirement, cannot be recycled, and has the problem of water resource waste.
(2) Due to the continuous upgrading of the performance of the cooling liquid, the content of organic matters in the wastewater is continuously increased, the wastewater treatment capacity is large and difficult to treat, and meanwhile, a large amount of cooling liquid contained in the discharged wastewater causes waste.
Disclosure of Invention
In view of the above, the invention provides a wastewater treatment device for a diamond wire slicing machine and a wastewater treatment method thereof, which can treat wastewater generated by the diamond wire slicing machine to meet the requirements of cyclic utilization on conductivity, pH value and organic matter content, effectively improve the utilization rate of water resources, and reduce the consumption of production water.
In order to solve the technical problems, the invention adopts the following technical scheme:
according to a first aspect of the present invention, a wastewater treatment apparatus for a wire slicer includes:
the inlet end of the waste water collecting device is connected with the water outlet end of the diamond wire slicing machine;
the inlet end of the wastewater filtering device is connected with the outlet end of the wastewater collecting device, and the wastewater filtering device is connected with a pH adjusting device;
clear liquid collection device, clear liquid collection device's entrance point connection waste water filter equipment's exit end, clear liquid collection device's exit end is connected the inlet end of buddha's warrior attendant line slicer, be equipped with ultraviolet sterilizer in the clear liquid collection device, clear liquid collection device still is connected with the pure water supply source.
Further, waste water collection device is waste water buffer tank, waste water filter equipment includes:
the wastewater blending tank is provided with two inlets, a first inlet end of the wastewater blending tank is connected with an outlet end of the wastewater caching tank, a first stirrer is arranged in the wastewater blending tank, the pH adjusting device comprises a first pH meter and an acid adjusting tank, the first pH meter is used for measuring the pH value of wastewater in the wastewater blending tank, the acid adjusting tank releases corresponding acid adjusting reagents into the wastewater blending tank according to the value measured by the first pH meter, and the acid adjusting tank is connected with a second inlet of the wastewater blending tank;
the inlet end of the filter press unit is connected with the outlet end of the wastewater blending tank, and the filtrate outlet end of the filter press unit is connected with the clear liquid collecting device.
Furthermore, a first turbidity meter is arranged at a filtrate outlet end of the filter press unit, a three-way valve is arranged on a downstream pipeline of the first turbidity meter, a first interface of the three-way valve is connected with the filter press unit, and a second interface of the three-way valve is connected with the clear liquid collecting device;
the waste water filtering device also comprises a dirty liquid cache tank, the inlet end of the dirty liquid cache tank is connected with the third interface of the three-way valve, the outlet end of the dirty liquid cache tank is connected with the second inlet end of the waste water blending tank,
wherein the second interface or the third interface is turned on/off according to the measurement value of the first turbidity meter.
Further, the clear liquid collecting device includes:
the inlet end of the clear liquid buffer tank is connected with the second interface of the three-way valve, and the clear liquid buffer tank is also provided with a water outlet;
the clear liquid mixing tank is provided with two inlets, a first inlet end of the clear liquid mixing tank is connected with an outlet end of the clear liquid cache tank, a second inlet end of the clear liquid mixing tank is connected with the pure water supply source, and a second stirrer, a second pH meter, a first conductivity meter and/or a second turbidity meter are/is arranged in the clear liquid mixing tank and used for mixing the wastewater in the clear liquid mixing tank to reach a preset concentration;
the finished product jar, the entrance end connection of finished product jar the exit end of clear liquid blending jar, the exit end connection of finished product jar the water inlet end of buddha's warrior attendant line slicer, be equipped with third pH meter, second conductivity meter and/or third turbidity appearance in the finished product jar, just ultraviolet sterilizer connects the exit end department of finished product jar.
Furthermore, a chemical oxygen demand measuring instrument is arranged in the finished product tank, and the water supplementing amount of the pure water supply source is adjusted and controlled according to the measured value of the chemical oxygen demand measuring instrument.
Furthermore, a first delivery pump, a pressure transmitter and a first multi-bag filter are arranged on a pipeline between the outlet end of the wastewater cache tank and the inlet end of the wastewater blending tank;
a second delivery pump is arranged on a pipeline between the outlet end of the wastewater blending tank and the filter press unit;
a first electromagnetic flow meter, a first electromagnetic valve, a third delivery pump and a second multi-bag filter are arranged on a pipeline between the first inlet end of the clear liquid preparation tank and the outlet end of the clear liquid cache tank;
a second electromagnetic flow meter and a second electromagnetic valve are arranged on a pipeline between a second inlet end of the clear liquid preparation tank and the pure water supply source;
a third electromagnetic flow meter, a third electromagnetic valve, a fourth delivery pump and a third multi-bag filter are arranged on a pipeline between the outlet end of the clear liquid preparation tank and the inlet end of the finished product tank;
and a fourth electromagnetic flow meter, a fourth electromagnetic valve, a fifth delivery pump and a fourth multi-bag filter are arranged on a pipeline between the outlet end of the finished product tank and the water inlet end of the diamond wire slicing machine.
Further, the waste water blending tank, the clear liquid blending tank and the finished product tank respectively comprise two tanks, and one of the tanks is communicated alternatively during work.
Furthermore, the wastewater buffer tank, the wastewater blending tank, the clear liquid blending tank and the finished product tank are internally provided with double liquid level meters of upper liquid level and lower liquid level, the double liquid level meters are used for detecting the upper liquid level and the lower liquid level in the tank body, each outlet end is opened/closed according to the lower liquid level meter, and each inlet end is opened/closed according to the upper liquid level meter.
Further, still include the PLC controller, the PLC controller is used for controlling the waste water collection device, waste water filter equipment and the intercommunication between the clear solution collection device.
The wastewater treatment method of the wastewater treatment device of the diamond wire slicer according to the embodiment of the second aspect of the invention comprises the following steps:
s1, collecting waste water generated after cutting work of a diamond wire slicing machine;
s2, detecting and adjusting the pH value of the wastewater, filtering the adjusted wastewater and discharging a filtrate;
s3, collecting the filtrate, adding pure water for blending to form a finished product liquid, and then carrying out ultraviolet sterilization on the blended finished product liquid;
and S4, outputting the finished product liquid after ultraviolet sterilization.
The technical scheme of the invention has at least one of the following beneficial effects:
according to the wastewater treatment device and the wastewater treatment method for the diamond wire slicing machine, provided by the embodiment of the invention, the pH, the conductivity, the turbidity and the COD of the treated wastewater in production can meet the requirements of the relevant quality of production water, the finished liquid is subjected to ultraviolet sterilization and filtration treatment, the bacteria and the like which are bred in a system in a long-term circulation mode are removed to meet the requirements of the production water, the treated wastewater is supplied to the diamond wire slicing machine for production and recycling again after a series of treatments, the utilization rate of water resources is effectively improved, and the loss of the production water is reduced.
In addition, the COD content of finished product water obtained after the treatment of the method is 5400-5800mg/L, the pH is 5.5-6.5, the conductivity is less than or equal to 6 mu s/cm, the water quality requirement of cutting water is met, the recycling rate of the whole slicing wastewater is more than 85%, the treatment effect of the method is stable, the wastewater treatment and recycling functions of a diamond wire slicing machine are realized, and the occurrence probability of abnormal conditions of cutting and wire breaking in the silicon wafer cutting process is effectively reduced. Greatly reduces the pure water consumption of the slicing machine, achieves the purpose of comprehensively utilizing cooling liquid and water resources, and effectively reduces the production cost.
Drawings
FIG. 1 is a schematic view showing a configuration of a waste water treatment apparatus of a wire slicer according to an embodiment of the first aspect of the present invention;
FIG. 2 is a schematic view showing another configuration of a waste water treatment apparatus for a diamond wire slicer according to an embodiment of the first aspect of the present invention;
FIG. 3 is a diagram showing a step of a wastewater treatment method of a wastewater treatment apparatus for a diamond wire slicer according to an embodiment of the second aspect of the present invention.
Reference numerals: 100. a diamond wire slicing machine;
200. a wastewater collection device; 210. a wastewater buffer tank; 220. a first multi-bag filter;
300. a wastewater filtration device; 310. A ph adjusting device; 320. a wastewater blending tank; 330. a filter press unit; 340. a first turbidity meter; 350. a three-way valve; 360. a dirty liquid buffer tank;
400. a clear liquid collecting device; 410. an ultraviolet sterilizer; 420. a clear liquid buffer tank; 430. a water discharge port; 440. a second multiple bag filter; 450. a clear liquid preparation tank; 460. a third multiple bag filter; 470. a finished product tank; 480. a fourth multiple bag filter;
500. a pure water supply source.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention, are within the scope of the invention.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and the like, herein does not denote any order, quantity, or importance, but rather the terms "first," "second," and the like are used to distinguish one element from another. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used only to indicate relative positional relationships, and when the absolute position of the object to be described is changed, the relative positional relationships are changed accordingly.
First, a wastewater treatment apparatus for a diamond wire slicer and a wastewater treatment method thereof according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.
The waste water treatment device of the diamond wire slicer according to the embodiment of the first aspect of the present invention, as shown in fig. 1, comprises: a wastewater collection device 200, a wastewater filtration device 300, and a clear liquid collection device 400.
Wherein, the inlet end of the waste water collecting device 200 is connected with the water outlet end of the diamond wire slicing machine 100.
The inlet end of the wastewater filtering device 300 is connected to the outlet end of the wastewater collecting device 200, and the wastewater filtering device 300 is connected to the pH adjusting device 310.
The inlet end of the clear liquid collecting device 400 is connected with the outlet end of the wastewater filtering device 300, the outlet end of the clear liquid collecting device 400 is connected with the water inlet end of the diamond wire slicing machine 100, an ultraviolet sterilizer 410 is arranged in the clear liquid collecting device 400, and the clear liquid collecting device 400 is further connected with a pure water supply source 500.
According to the wastewater treatment device of the diamond wire slicer in the embodiment of the first aspect of the invention, wastewater discharged from the operation production of the diamond wire slicer 100 is firstly conveyed to the wastewater collection device 200 for collection; then the wastewater collection device 200 conveys the collected wastewater to the wastewater filtering device 300, the wastewater filtering device 300 adjusts the pH value of the collected wastewater through the pH adjusting device 310, and the wastewater produced by the diamond wire slicing machine 100 is alkalescent, so that silicon powder can be subjected to chemical reaction in the subsequent filter pressing treatment process, and acid liquor is added through the pH adjusting device for neutralization, so that the subsequent wastewater can be recovered and treated; finally, the clear liquid collecting device 400 collects the wastewater treated by the wastewater filtering device 300, regulates the conductivity and COD of the wastewater by adjusting the pure water supply source 500, and delivers the wastewater to the diamond wire slicer 100 for recycling after being sterilized by the ultraviolet sterilizer 410.
According to the wastewater treatment device for the diamond wire slicing machine, provided by the embodiment of the invention, the discharged water generated by the operation of the diamond wire slicing machine can be collected and treated, so that the discharged water meets the standards of conductivity, pH value and organic matter content, and is supplied for the production of the diamond wire slicing machine for recycling, the utilization rate of water resources is effectively improved, the consumption of production water is reduced, and the production cost is saved.
Further, in some embodiments, as shown in fig. 2, the wastewater collection device 200 is a wastewater buffer tank 210, and the wastewater filtering device 300 comprises: a wastewater make-up tank 320 and a filter press unit 330.
The wastewater blending tank 320 has two inlets, a first inlet of the wastewater blending tank 320 is connected to an outlet of the wastewater buffer tank 210, a first stirrer (not shown) is disposed in the wastewater blending tank 320, the pH adjusting device 310 includes a first pH meter and an acid adjusting tank, the first pH meter is used for measuring a pH value of wastewater in the wastewater blending tank 320, the acid adjusting tank releases a corresponding acid adjusting reagent into the wastewater blending tank 320 according to the value measured by the first pH meter, and the acid adjusting tank is connected to a second inlet of the wastewater blending tank 320.
The inlet end of the filter press unit 330 is connected with the outlet end of the wastewater blending tank 320, and the filtrate outlet end of the filter press unit 330 is connected with the clear liquid collecting device 400.
Specifically, the wastewater output from the wastewater buffer tank 210 is collected by the wastewater blending tank 320, the pH value of the wastewater in the wastewater blending tank 320 is measured by the first pH meter of the pH adjusting device 310, the measured wastewater after production is weak alkaline, the acid blending tank of the pH adjusting device 310 releases a corresponding acid blending reagent into the wastewater blending tank 320 according to the value measured by the first pH meter to perform neutralization, and a first stirrer (not shown) in the wastewater blending tank 320 continuously stirs to ensure sufficient neutralization; next, the wastewater adjustment tank 320 sends the wastewater after pH adjustment to the filter press unit 330, the filter press unit 330 performs solid-liquid separation treatment on the wastewater, and the filtrate is discharged and sent to the clear liquid collection device 400.
Further, as shown in fig. 2, a first turbidity meter 340 is arranged at a filtrate outlet end of the filter press unit 330, a three-way valve 350 is arranged on a downstream pipeline of the first turbidity meter 340, a first interface of the three-way valve 350 is connected with the filter press unit 330, and a second interface of the three-way valve 350 is connected with the clear liquid collecting device 400;
the wastewater filtering apparatus 300 further comprises a dirty liquid buffer tank 360, an inlet end of the dirty liquid buffer tank 360 is connected to the third interface of the three-way valve 350, an outlet end of the dirty liquid buffer tank 360 is connected to the second inlet end of the wastewater blending tank 320,
wherein the second interface or the third interface is turned on/off according to the measurement value of the first turbidity meter.
Specifically, the turbidity of the filtrate discharged from the filter press unit 330 is detected by the first turbidity meter 340, if the detected turbidity meets the rated requirement, the three-way valve 350 is controlled to communicate with the clear liquid collecting device 400 and convey the clear liquid, if the detected turbidity does not meet the rated requirement, the three-way valve 350 is controlled to communicate with the dirty liquid buffer tank 360 and convey the dirty liquid, and the filtrate collected by the dirty liquid buffer tank 360 is returned to the wastewater blending tank 320 for treatment.
Further, as shown in fig. 2, the clear liquid collecting apparatus 400 includes: a clear liquid buffer tank 420, a clear liquid preparation 450 and a finished product tank 470.
Wherein, the inlet end of the clear liquid buffer tank 420 is connected with the second interface of the three-way valve 350, and the clear liquid buffer tank 420 is further provided with a water outlet 430.
The clear liquid blending tank 450 has two inlets, a first inlet of the clear liquid blending tank 450 is connected to the outlet of the clear liquid buffer tank 420, a second inlet of the clear liquid blending tank 450 is connected to the pure water supply source 500, and a second stirrer, a second pH meter, a first conductivity meter, and/or a second turbidity meter (not shown) are/is arranged in the clear liquid blending tank 450 for blending the wastewater in the clear liquid blending tank to a predetermined concentration.
The inlet end of the finished product tank 470 is connected to the outlet end of the clear solution preparation tank 450, the outlet end of the finished product tank 470 is connected to the water inlet end of the diamond wire slicer 100, a third pH meter, a second conductivity meter, and/or a third turbidity meter (not shown) are disposed in the finished product tank 470, and the uv sterilizer 410 is connected to the outlet end of the finished product tank 470.
Specifically, the clear liquid buffer tank 420 collects the filtered liquid (wastewater) discharged by the filter press unit 330, and the clear liquid buffer tank 420 is provided with a water outlet 430 to directly discharge the excessive filtered liquid to the sewage treatment system in an overflow manner, so as to solve the problem of discharging the excessive filtered liquid when the clear liquid blending tank 450 reaches a high liquid level and cannot blend the excessive filtered liquid; the clear liquid blending tank 450 collects the wastewater delivered by the clear liquid buffer tank 420, the wastewater collected by the clear liquid blending tank is blended by the first conductivity meter and/or the second turbidity meter and the pure water supply source 500 to meet the preset water quality requirement, the wastewater is monitored by the second pH meter for pH value, and the wastewater is stirred by the second stirrer at the same time.
The finished product tank 470 collects the wastewater delivered by the clear solution preparation tank 450, and also monitors the pH, conductivity and/or turbidity, and then the finished product tank 450 outputs the finished product solution to be sterilized by the ultraviolet sterilizer 410, so that the water quality meets the requirement and is supplied to the diamond wire slicer 100 for recycling.
Further, a chemical oxygen demand measuring instrument (not shown) is provided in the product tank 470, and the amount of the replenishment water of the pure water supply source 500 is adjusted and controlled according to a measurement value of the chemical oxygen demand measuring instrument.
That is, a chemical oxygen demand measuring instrument is disposed in the finished product tank 470 for monitoring the organic content of the finished product liquid in the tank, and adjusting the water replenishing proportion of the pure water supply source 500 according to the measured value, so that the finished product liquid meets the requirement of COD.
Further, as shown in fig. 2, a first transfer pump, a pressure transmitter (not shown) and a first multi-bag filter 220 are provided on a pipe between the outlet end of the wastewater buffer tank 210 and the inlet end of the wastewater blending tank 320.
Specifically, the first transfer pump and the pressure transmitter control the transfer of the wastewater in the wastewater buffer tank 210, and the first multi-bag filter 220 in the section of pipeline can filter massive silicon sludge, flocculent aggregates (silicates), finely-crushed silicon chips and diamond wires contained in the wastewater discharged by the diamond wire slicer 100.
A second transfer pump (not shown) is provided on the line between the outlet end of the wastewater conditioning tank 320 and the filter press train 330.
That is, the transport of the waste water on the section of the pipeline is controlled by the second transport pump.
A first electromagnetic flow meter, a first electromagnetic valve, a third transfer pump (not shown) and a second multi-bag filter 440 are provided on the piping between the first inlet end of the clear liquid blending tank 450 and the outlet end of the clear liquid buffer tank 420.
Specifically, the third transfer pump controls the transfer of the wastewater in the section of pipeline, the first electromagnetic flow meter and the first electromagnetic valve monitor the transfer flow, and the second multi-bag filter 440 filters flocculent impurities in the section of pipeline.
A second electromagnetic flow meter, a second electromagnetic valve (not shown) is provided on the pipe between the second inlet end of the clear liquid preparation tank 450 and the pure water supply source 500.
Specifically, the supply amount of the pure water supply source 500 is controlled by the second electromagnetic flow meter and the second electromagnetic valve. For example, when the clear liquid preparation tank 450 collects the filtered liquid, the pure water supply source 500 starts to supply water, the second solenoid valve is controlled to open according to the actual condition and the rated requirement of each index measurement value, and the second solenoid flow meter performs monitoring to add a certain proportion of pure water into the clear liquid preparation tank 450 so as to prepare the quality of the filtered liquid in the clear liquid preparation tank 450.
A third electromagnetic flow meter, a third electromagnetic valve, a fourth transfer pump (not shown) and a third multi-bag filter are provided on the piping between the outlet end of the clear liquid blending tank 450 and the inlet end of the finished product tank 470.
Specifically, the fourth delivery pump controls the delivery of wastewater in the section of pipeline, the third electromagnetic flow meter and the third electromagnetic valve monitor the delivery flow, and the third multi-bag filter 440 filters flocculent impurities in the section of pipeline.
A fourth electromagnetic flow meter, a fourth solenoid valve, a fifth transfer pump (not shown), and a fourth multi-pocket filter are on the line between the outlet end of the product tank 470 and the water inlet end of the diamond wire slicer 100.
Specifically, the fifth transfer pump controls the transfer of the wastewater in the section of pipeline, and the fourth electromagnetic flow meter and the fourth electromagnetic valve monitor the transfer flow, and the fourth multi-bag filter 440 filters flocculent impurities contained in the section of pipeline. In addition, the conveying pipeline between the outlet end of the finished product tank 470 and the diamond wire slicing machine 100 is arranged outdoors, and heat insulation cotton is adopted for heat insulation treatment, so that influence on water quality due to changes of environmental factors such as high temperature or low temperature for a long time is prevented.
Further, the waste water preparing tank 320, the clear solution preparing tank 450 and the finished product tank 470 respectively comprise two tanks, and one of the tanks is selectively communicated during operation.
Specifically, the arrangement is a one-use one-standby mode, and the communication state between the two tanks can be manually controlled so as to adapt to the use working conditions of different waste water storage amounts.
Further, a double level meter (not shown) for detecting upper and lower liquid levels is disposed in each of the wastewater buffer tank 210, the wastewater blending tank 320, the clear liquid blending tank 450 and the finished product tank 470, each outlet port is opened/closed according to the lower liquid level meter, and each inlet port is opened/closed according to the upper liquid level meter.
Specifically, through the arrangement of double liquid level meters of upper and lower liquid levels, the over-high filling overflow of the liquid level in the tank and the over-low pumping of the liquid level delivery pump can be controlled. For example, if the upper level count value of the wastewater buffer tank 210 indicates that the wastewater level stored in the tank exceeds the predetermined level, the first transfer pump is controlled to be turned on to transfer wastewater to the wastewater blending tank 320 along the pipeline, and if the lower level count value indicates that the wastewater level stored in the tank is lower than the predetermined level, the first transfer pump is controlled to be stopped, thereby effectively avoiding the full tank condition of the wastewater buffer tank 210 and the idle running condition of the first transfer pump.
In addition, the waste water buffer tank 210, the waste water blending tank 320, the clear liquid buffer tank 420, the dirty liquid buffer tank 360, the clear liquid blending tank 450 and the finished product tank 470 are all made of 304 stainless steel materials, and the tank bodies are provided with manholes, ladder stands and the like, so that cleaning and maintenance in each tank body are facilitated.
Further, a PLC controller (not shown) for controlling communication among the wastewater collection device 200, the wastewater filtering device 300, and the clear liquid collection device 400 is further included.
That is to say, the make-and-break of waste water transport between the intercommunication between waste water collection device 200, waste water filter equipment 300 and clear liquid collection device 400 is by PLC controller integrated control, simple operation, and is simple high-efficient.
For example, instruments, meters and detection devices such as liquid level meters, delivery pumps, electromagnetic valves, electromagnetic flow meters, turbidity meters, pH meters, conductivity meters, COD meters and the like in the device are controlled by a PLC control system, and information is presented in a center console in real time.
In addition, as shown in fig. 2, the waste water treatment apparatus for diamond wire slicing machine according to the embodiment of the first aspect of the present invention further includes a water return pipeline, the water return pipeline is connected to the pipeline in front of the inlet end of the diamond wire slicing machine and the inlet of the finished product tank, and when the diamond wire slicing machine uses excessive water, the excessive water is recovered.
The wastewater treatment method of the wastewater treatment device of the diamond wire slicer according to the embodiment of the second aspect of the present invention, as shown in fig. 3, comprises the steps of:
s1, collecting waste water generated after cutting work of a diamond wire slicer;
s2, detecting and adjusting the pH value of the wastewater, filtering the adjusted wastewater and discharging a filtrate;
s3, collecting the filtrate, adding pure water for blending to form finished liquid, and then carrying out ultraviolet sterilization on the blended finished liquid;
and S4, outputting the finished product liquid after ultraviolet sterilization.
Next, the process of wastewater treatment of the diamond wire slicer wastewater treatment apparatus according to the embodiment of the present invention will be described in further detail with reference to the diamond wire slicer wastewater treatment apparatus of the embodiment shown in fig. 2.
Firstly, the wastewater generated by the diamond wire slicing machine 100 is collected by the wastewater buffer tank 210, the wastewater is pressurized and conveyed to the wastewater preparation tank 320 by the first conveying pump and the pressure transmitter, the opening and closing of the inlet end and the outlet end of the wastewater buffer tank 210 are controlled according to the indication of the upper level gauge and the lower level gauge in the wastewater buffer tank 210, and the wastewater is subjected to primary filtration by the first multi-bag filter 220.
Secondly, the wastewater blending tank 320 detects, regulates and controls the pH of the wastewater in real time through the pH adjusting device 310, the wastewater meeting the pH standard is conveyed to the filter press unit 330 through the second conveying pump, the filter press unit 330 performs solid-liquid separation on the collected wastewater, the discharged and separated filtrate is tested by the first turbidity meter 340, and if the turbidity meets the standard, the three-way valve 350 is controlled to convey the filtrate to the clear liquid cache tank 420; otherwise, the three-way valve 350 is controlled to deliver the filtered liquid to the dirty liquid buffer tank 360, and the dirty liquid buffer tank 360 delivers the filtered liquid to the wastewater blending tank 320 for reprocessing.
Then, the clear liquid buffer tank 420 delivers the filtered clear liquid (waste water) to the clear liquid preparation tank 450 through a third delivery pump, a low liquid level gauge is arranged in the clear liquid buffer tank 420 to control the opening and closing of the outlet end of the clear liquid buffer tank, and the filtered clear liquid is metered and controlled through a first electromagnetic flow meter and a first electromagnetic valve and filtered through a second multi-bag filter 440; meanwhile, pure water is supplied into the clear liquid preparation tank 450, the pure water supply is metered and controlled by a second electromagnetic flow meter and a second electromagnetic valve, and the filtered clear liquid is stirred according to the real-time regulation and control of a second pH meter, a first conductivity meter, and/or a second turbidity meter and/or a chemical oxygen demand meter of the clear liquid preparation tank 450 so as to meet the standards of conductivity, pH and the like; the fourth transfer pump transfers the regulated and controlled filtrate to the finished product tank 470, and the measured filtrate is controlled by the third electromagnetic flow meter and the third electromagnetic valve and filtered by the third multi-bag filter 460; the product liquid collected in the product tank 470 is monitored for conductivity, pH, etc. by a third pH meter, a second conductivity meter, and/or a third turbidity meter.
Finally, the sterilized and filtered finished product liquid in the finished product tank 470 is directly conveyed to the diamond wire cutting machine 100 by a fifth conveying pump for recycling, and is metered and controlled by a fourth electromagnetic flowmeter and a fourth electromagnetic valve and filtered by a fourth multi-bag filter.
According to the wastewater treatment process of the wastewater treatment device of the diamond wire slicer, provided by the embodiment of the second aspect of the invention, the wastewater generated by the diamond wire slicer can be effectively treated according to the standard of pH, conductivity and COD, the control is simple, the recovery rate of the wastewater is effectively improved, and the production cost is reduced.
While the foregoing is directed to the preferred embodiment of the present invention, it will be appreciated by those skilled in the art that various changes and modifications may be made therein without departing from the principles of the invention as set forth in the appended claims.
Claims (10)
1. The utility model provides a buddha's warrior attendant line slicer effluent treatment plant which characterized in that includes:
the inlet end of the waste water collecting device is connected with the water outlet end of the diamond wire slicing machine;
the inlet end of the wastewater filtering device is connected with the outlet end of the wastewater collecting device, and the wastewater filtering device is connected with a pH adjusting device;
clear liquid collection device, clear liquid collection device's entrance point connection waste water filter equipment's exit end, clear liquid collection device's exit end is connected the inlet end of buddha's warrior attendant line slicer, be equipped with ultraviolet sterilizer in the clear liquid collection device, clear liquid collection device still is connected with the pure water supply source.
2. The diamond wire slicer waste water treatment device as claimed in claim 1, wherein the waste water collecting device is a waste water buffer tank, the waste water filtering device comprises:
the wastewater blending tank is provided with two inlets, a first inlet end of the wastewater blending tank is connected with an outlet end of the wastewater caching tank, a first stirrer is arranged in the wastewater blending tank, the pH adjusting device comprises a first pH meter and an acid adjusting tank, the first pH meter is used for measuring the pH value of wastewater in the wastewater blending tank, the acid adjusting tank releases corresponding acid adjusting reagents into the wastewater blending tank according to the value measured by the first pH meter, and the acid adjusting tank is connected with a second inlet of the wastewater blending tank;
the inlet end of the filter press unit is connected with the outlet end of the wastewater blending tank, and the filtrate outlet end of the filter press unit is connected with the clear liquid collecting device.
3. The wastewater treatment device for the diamond wire slicer according to claim 2, wherein a first turbidity meter is arranged at a filtrate outlet end of the filter press unit, a three-way valve is arranged on a downstream pipeline of the first turbidity meter, a first interface of the three-way valve is connected with the filter press unit, and a second interface of the three-way valve is connected with the clear liquid collecting device;
the waste water filtering device also comprises a dirty liquid cache tank, the inlet end of the dirty liquid cache tank is connected with the third interface of the three-way valve, the outlet end of the dirty liquid cache tank is connected with the second inlet end of the waste water blending tank,
wherein the second interface or the third interface is turned on/off according to the measurement value of the first turbidity meter.
4. The diamond wire slicer wastewater treatment device of claim 3, wherein the clear liquid collecting device comprises:
the inlet end of the clear liquid buffer tank is connected with the second interface of the three-way valve, and the clear liquid buffer tank is also provided with a water outlet;
the clear liquid mixing tank is provided with two inlets, a first inlet end of the clear liquid mixing tank is connected with an outlet end of the clear liquid cache tank, a second inlet end of the clear liquid mixing tank is connected with the pure water supply source, and a second stirrer, a second pH meter, a first conductivity meter and/or a second turbidity meter are/is arranged in the clear liquid mixing tank and used for mixing the wastewater in the clear liquid mixing tank to reach a preset concentration;
the finished product jar, the entrance end connection of finished product jar the exit end of clear liquid blending jar, the exit end connection of finished product jar the water inlet end of buddha's warrior attendant line slicer, be equipped with third pH meter, second conductivity meter and/or third turbidity appearance in the finished product jar, just ultraviolet sterilizer connects the exit end department of finished product jar.
5. The wastewater treatment apparatus according to claim 4, wherein a chemical oxygen demand meter is further provided in the finished product tank, and the amount of water supply from the pure water supply source is adjusted and controlled based on a measurement value of the chemical oxygen demand meter.
6. The diamond wire slicer waste water treatment apparatus as claimed in claim 4,
a first delivery pump, a pressure transmitter and a first multi-bag filter are arranged on a pipeline between the outlet end of the wastewater cache tank and the inlet end of the wastewater blending tank;
a second delivery pump is arranged on a pipeline between the outlet end of the wastewater blending tank and the filter press unit;
a first electromagnetic flow meter, a first electromagnetic valve, a third delivery pump and a second multi-bag filter are arranged on a pipeline between the first inlet end of the clear liquid preparation tank and the outlet end of the clear liquid cache tank;
a second electromagnetic flow meter and a second electromagnetic valve are arranged on a pipeline between a second inlet end of the clear liquid preparation tank and the pure water supply source;
a third electromagnetic flow meter, a third electromagnetic valve, a fourth delivery pump and a third multi-bag filter are arranged on a pipeline between the outlet end of the clear liquid preparation tank and the inlet end of the finished product tank;
and a fourth electromagnetic flow meter, a fourth electromagnetic valve, a fifth delivery pump and a fourth multi-bag filter are arranged on a pipeline between the outlet end of the finished product tank and the water inlet end of the diamond wire slicing machine.
7. The apparatus as claimed in claim 4, wherein the waste water preparation tank, the clear solution preparation tank and the finished product tank are respectively two tanks, and one of them is selectively communicated in operation.
8. The wastewater treatment device of a diamond wire slicer according to claim 7, wherein the wastewater buffer tank, the wastewater blending tank, the clear solution blending tank and the finished product tank are all provided with double level gauges of upper and lower liquid levels for detecting the upper and lower liquid levels in the tank body, each outlet port is opened/closed according to the lower liquid level gauge, and each inlet port is opened/closed according to the upper liquid level gauge.
9. The diamond wire slicer wastewater treatment device of claim 1, further comprising a PLC controller for controlling communication between the wastewater collection device, the wastewater filtration device and the clear liquid collection device.
10. A wastewater treatment method of a wastewater treatment device of a diamond wire slicing machine is characterized by comprising the following steps:
s1, collecting waste water generated after cutting work of a diamond wire slicer;
s2, detecting and adjusting the pH value of the wastewater, filtering the adjusted wastewater and discharging a filtrate;
s3, collecting the filtrate, adding pure water for blending to form a finished product liquid, and then carrying out ultraviolet sterilization on the blended finished product liquid;
and S4, outputting the finished product liquid after ultraviolet sterilization.
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| CN202210876054.9A CN115259493A (en) | 2022-07-25 | 2022-07-25 | Wastewater treatment device and wastewater treatment method for diamond wire slicing machine |
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| CN202210876054.9A CN115259493A (en) | 2022-07-25 | 2022-07-25 | Wastewater treatment device and wastewater treatment method for diamond wire slicing machine |
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| JP2009214193A (en) * | 2008-03-07 | 2009-09-24 | Disco Abrasive Syst Ltd | Processing waste liquid treatment device |
| CN211999201U (en) * | 2020-03-25 | 2020-11-24 | 苏州阿特斯阳光电力科技有限公司 | Cutting coolant liquid circulation system and cutting system |
| CN112624404A (en) * | 2020-12-08 | 2021-04-09 | 句容协鑫光伏科技有限公司 | Regeneration and utilization system of buddha's warrior attendant line coolant liquid |
| CN215756753U (en) * | 2020-11-11 | 2022-02-08 | 江阴东为资源再生技术有限公司 | Online circulation recovery system of silicon wafer cutting fluid |
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2022
- 2022-07-25 CN CN202210876054.9A patent/CN115259493A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009214193A (en) * | 2008-03-07 | 2009-09-24 | Disco Abrasive Syst Ltd | Processing waste liquid treatment device |
| CN211999201U (en) * | 2020-03-25 | 2020-11-24 | 苏州阿特斯阳光电力科技有限公司 | Cutting coolant liquid circulation system and cutting system |
| CN215756753U (en) * | 2020-11-11 | 2022-02-08 | 江阴东为资源再生技术有限公司 | Online circulation recovery system of silicon wafer cutting fluid |
| CN112624404A (en) * | 2020-12-08 | 2021-04-09 | 句容协鑫光伏科技有限公司 | Regeneration and utilization system of buddha's warrior attendant line coolant liquid |
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Application publication date: 20221101 |