CN108975533B - Intelligent sewage treatment method for sapphire substrate factory - Google Patents
Intelligent sewage treatment method for sapphire substrate factory Download PDFInfo
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- CN108975533B CN108975533B CN201810805264.2A CN201810805264A CN108975533B CN 108975533 B CN108975533 B CN 108975533B CN 201810805264 A CN201810805264 A CN 201810805264A CN 108975533 B CN108975533 B CN 108975533B
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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
- C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
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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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- 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
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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
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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
- C02F2209/42—Liquid level
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- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
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- Organic Chemistry (AREA)
- Physical Water Treatments (AREA)
Abstract
The invention relates to an intelligent sewage treatment method for a sapphire substrate factory, which comprises the following steps: (1) and (4) classification: classifying sewage generated in the sapphire substrate production process according to characteristics, wherein the sewage comprises a slicing and grinding process sewage; b. acid washing and alkali washing process sewage; c. the finished product pieces scrub the waste water; d. sewage from other processes; (2) pretreatment: slicing and grinding process sewage in the step (1); b. acid washing and alkali washing process sewage; c. pre-treating the finished piece brushing wastewater; (3) conventional sewage treatment: and (3) inputting the sewage pretreated in the step (2) and sewage of other procedures into a sewage treatment station for unified treatment. The invention can realize automatic unattended operation of sewage treatment, reduces the probability of blockage and corrosion of pipelines of a sewage system through the pretreatment of the sewage treatment units in each process, realizes the recycling of the brushing waste water, and provides a set of intelligent and automatic technical scheme for saving water resources and manpower resources.
Description
Technical Field
The invention relates to an intelligent sewage treatment method for a sapphire substrate factory, and belongs to the technical field of industrial sewage treatment generated by processing of sapphire substrates.
Background
Sapphire substrate processing involves many processes, and the produced sewage nature difference of every process is big, and the sewage that is rich in large granule solid impurity granule blocks up the pipeline easily, and the sewage that contains the acidizing fluid corrodes the pipeline easily, and finished product piece scrubs waste water and its quality of water is superior to industrial tap water, can collect the back and supply section, the grinding process to use, and traditional sewage treatment is with above-mentioned sewage direct collection to the sewage treatment station, carries out unified processing in the sewage treatment pond. However, the centralized sewage treatment brings a series of problems to sapphire substrate processing factories, such as: the sewage conveying pipeline is blocked, and a large amount of manpower is consumed for dredging after the blockage; the acid-containing sewage corrodes a sewage conveying pipeline, so that the sewage leaks and the natural environment of soil is damaged; the finished piece brushing wastewater is directly discharged to a sewage station, so that the sewage treatment cost is increased, and the waste of water resources is caused.
A classification treatment scheme for wastewater generated in a sapphire substrate processing step has not been retrieved.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide an intelligent sewage treatment method for a sapphire substrate factory, which realizes automatic unattended operation of sewage treatment, reduces the pipeline blockage and corrosion probability of a sewage system through pretreatment of sewage treatment units in each process, realizes recycling of scrubbing waste water, and provides an intelligent and automatic technical scheme for saving water resources and manpower resources.
The technical scheme adopted by the invention for solving the technical problems is as follows:
an intelligent sewage treatment method for a sapphire substrate factory comprises the following steps:
(1) and (4) classification: classifying sewage generated in the sapphire substrate production process according to characteristics, wherein the sewage comprises a slicing and grinding process sewage; b. acid washing and alkali washing process sewage; c. the finished product pieces scrub the waste water; d. sewage from other processes;
(2) pretreatment: slicing and grinding process sewage in the step (1); b. acid washing and alkali washing process sewage; c. respectively pretreating the finished piece brushing wastewater;
(3) conventional sewage treatment: and (3) inputting the sewage pretreated in the step (2) and sewage of other procedures into a sewage treatment station for unified treatment.
In the pretreatment step of step (2), a pretreatment method of the sewage in the slicing and grinding process is as follows:
(1) the sewage of the slicing and grinding process enters a centrifugal separator after being pressurized by a centrifugal pump, large-particle solid impurities are discharged after being separated by the centrifugal separator, and the rest sewage enters a liquid collecting tank;
(2) and the sewage in the liquid collecting tank overflows to a sewage treatment station after natural sedimentation.
Preferably, the slicing and grinding engineering sewage can be subjected to coarse filtration to filter out large particles, and then enters a centrifugal separator for separation.
After coarse filtration and/or centrifugal separation, natural overflow enters the sewage treatment station again, prevents that sewage pipeline from blockking up, also reduces the required manpower and materials cost that consumes of mediation after the follow-up jam.
In the pretreatment step of step (2), the pretreatment method of the acid washing process wastewater is as follows:
(1) neutralizing the sewage collected by the sewage collecting pipeline in the acid washing process and the sewage collected by the sewage collecting pipeline in the alkali washing process in a pH neutralization tank;
(2) when the pH value measured by the pH value measuring sensor is lower than a set value, transmitting a starting signal to the pneumatic diaphragm pump, and starting the pneumatic diaphragm pump to operate;
(3) after the pneumatic diaphragm pump is started, lime water is pumped into a pH neutralization pond to neutralize excessive acid-containing sewage;
(4) when the pH value measured by the pH value measuring sensor reaches a set value, transmitting a stop signal to the pneumatic diaphragm pump, and stopping the operation of the pneumatic diaphragm pump;
(5) and naturally overflowing the sewage neutralized by the pH neutralization tank to a sewage treatment station.
Preferably, the pH set point is between 6 and 8.
The acid-containing sewage is neutralized and then enters the sewage treatment station, so that the corrosion of the acid-containing sewage to a conveying pipeline can be prevented.
As a preferred technical solution of the present application, in the pretreatment step of step (2), the pretreatment method of c. finished piece brushing wastewater is as follows:
(1) collecting the scrubbed wastewater to a scrubbing wastewater collecting tank by a finished piece scrubbing wastewater collecting pipeline;
(2) when the liquid level sensor cannot sense the liquid level, transmitting an opening signal to the second electromagnetic valve, and opening an industrial tap water pipeline for supplementing the shortage of finished product piece brushing wastewater;
(3) when the liquid level sensor senses the liquid level, a closing signal is transmitted to the first electromagnetic valve, the first electromagnetic valve is closed, and industrial tap water is prevented from flowing back to the brushing wastewater collecting tank;
(4) when the liquid level in the brushing wastewater collecting tank is higher than the overflow port, the brushing wastewater automatically overflows to a sewage treatment station.
The finished piece brushing wastewater is conveyed to other procedures with low requirements on water quality to be used firstly, and then enters a sewage treatment step, so that water resources can be recycled, and the sewage treatment cost is also reduced.
Advantageous effects
The method classifies sewage of each process of a sapphire substrate factory, carries out pretreatment after classification, and converges the sewage to a sewage treatment station for unified treatment after pretreatment, thereby reducing the workload of subsequent sewage treatment, reducing the sewage treatment cost and preventing the waste caused by direct discharge of part of reusable water.
Drawings
FIG. 1 is a flow chart of an intelligent sewage treatment method of a sapphire substrate factory according to the invention;
FIG. 2 is a schematic structural diagram of a sewage pretreatment method in a slicing and grinding process;
FIG. 3 is a schematic structural diagram of a sewage pretreatment method in an acid washing and alkali washing process;
FIG. 4 is a schematic structural diagram of a pretreatment method of finished piece brushing wastewater;
wherein: 1-slicing and grinding process sewage collecting pipeline; 2-a centrifugal pump; 3-a centrifugal separator; 4-a liquid collecting tank; 5-first-stage natural settling separation wall; 6-secondary natural settling separation wall; 7-a sewage collecting pipeline in the acid washing process; 8-collecting sewage in an alkaline washing process; 9-pH neutralization tank; 10-pH measuring sensor; 11-a first pneumatic diaphragm pump; 12-lime water storage tank; 13-finished product piece brushing wastewater collection pipeline; 14-brushing a wastewater collecting tank; 15-a second pneumatic diaphragm pump; 16-a first solenoid valve; 17-a second solenoid valve; 18-a liquid level sensor; 19-control signal transmission loop; 20-a sewage treatment station; 21-water pipeline for the procedures of brushing waste water reinjection slicing and grinding; 22-industrial tap water line.
Detailed Description
In order that the present invention may be more clearly understood, the following detailed description is given in conjunction with the examples. The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
Example 1
FIG. 1 shows a flow chart of an intelligent sewage treatment method of a sapphire substrate factory, and as shown in FIG. 1, firstly, sewage generated in a sapphire substrate production process is classified according to characteristics, including a. slicing and grinding process sewage; b. acid washing and alkali washing process sewage; c. the finished product pieces scrub the waste water; d. sewage from other processes; slicing and grinding the sewage in the step a; b. acid washing and alkali washing process sewage; c. respectively pretreating the finished piece brushing wastewater; finally, inputting the pretreated sewage and sewage of other procedures into a sewage treatment station for unified treatment;
referring to fig. 1 and fig. 2, (1) sewage collected by a sewage collecting pipeline 1 in the slicing and grinding process is pressurized by a centrifugal pump 2 and then enters a centrifugal separator 3, large-particle solid impurities are discharged after separation by the centrifugal separator 3, and the rest sewage enters a liquid collecting tank 4; (2) the sewage in the liquid collecting tank 4 overflows to a sewage treatment station 20 after two-stage natural sedimentation through a primary natural sedimentation partition wall 5 and a secondary natural sedimentation partition wall 6;
referring to fig. 1 and 3, (1) the sewage collected by the sewage collecting pipeline 7 of the acid washing process and the sewage collected by the sewage collecting pipeline 8 of the alkali washing process are neutralized in a pH neutralization tank 9; (2) when the pH value measured by the pH value measuring sensor 10 is lower than a set value (pH 7), transmitting a start signal to the first pneumatic diaphragm pump 11, and starting the first pneumatic diaphragm pump 11; (3) after the first pneumatic diaphragm pump 11 is started, lime water is pumped into the pH neutralization pond 9 from the lime water storage tank 12 to neutralize excessive acid-containing sewage; (4) when the pH value measured by the pH value measuring sensor 10 reaches a set value, a stop signal is transmitted to the first pneumatic diaphragm pump 11, and the first pneumatic diaphragm pump 11 stops running (the sapphire substrate processing technology determines that the amount of acid-containing sewage is certainly larger than that of alkali-containing sewage, so that only lime water is needed to neutralize the acid sewage in the pH neutralizing tank 9); (5) the sewage neutralized by the pH neutralization tank 9 naturally overflows to a sewage treatment station 20;
referring to fig. 1 and 4, (1) the finished piece brushing wastewater collecting pipeline 13 collects the brushed wastewater into the brushing wastewater collecting tank 14 (note: the finished piece brushing wastewater has better water quality than industrial tap water, and can be used for slicing and grinding processes); (2) when the liquid level sensor 18 senses the liquid level, transmitting an opening signal to the first electromagnetic valve 16, and reinjecting the slice by using the second pneumatic diaphragm pump 15 and the scrubbing wastewater, and reinjecting the finished product slice by using the water pipeline 21 in the grinding process to scrub the wastewater to the slicing and grinding process for use; (3) when the liquid level sensor 18 does not sense the liquid level, an opening signal is transmitted to the second electromagnetic valve 17, the industrial tap water pipeline 22 is opened, the shortage of finished product piece brushing wastewater is supplemented by the industrial tap water reinjection slicing and grinding process water pipeline 21, and meanwhile, the first electromagnetic valve 16 is closed to prevent the industrial tap water from flowing back to the brushing wastewater collecting tank 14; (4) when the liquid level in the brushing wastewater collecting tank 14 is higher than the overflow port, the brushing wastewater automatically overflows to the sewage treatment station 20; the whole sewage treatment system is controlled by a control signal transmission loop 19.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The meaning of "and/or" as used herein is intended to include both the individual components or both.
The term "connected" as used herein may mean either a direct connection between components or an indirect connection between components via other components.
The protection of the present invention is not limited to the above embodiments. Variations and advantages that may occur to those skilled in the art may be incorporated into the invention without departing from the spirit and scope of the inventive concept and the scope of the appended claims is intended to be protected.
Claims (2)
1. An intelligent sewage treatment method for a sapphire substrate factory is characterized by comprising the following steps:
(1) and (4) classification: classifying sewage generated in the sapphire substrate production process according to characteristics, wherein the sewage comprises a slicing and grinding process sewage; b. acid washing and alkali washing process sewage; c. the finished product pieces scrub the waste water; d. sewage from other processes;
(2) pretreatment: slicing and grinding process sewage in the step (1); b. acid washing and alkali washing process sewage; c. respectively pretreating the finished piece brushing wastewater;
(3) conventional sewage treatment: inputting the sewage pretreated in the step (2) and sewage of other procedures into a sewage treatment station for unified treatment;
in the pretreatment step of the step (2), a pretreatment method of sewage in slicing and grinding procedures is as follows:
(1) the sewage of the slicing and grinding process enters a centrifugal separator after being pressurized by a centrifugal pump, large-particle solid impurities are discharged after being separated by the centrifugal separator, and the rest sewage enters a liquid collecting tank;
(2) the sewage in the liquid collecting tank overflows to a sewage treatment station after natural sedimentation;
in the pretreatment step of the step (2), a pretreatment method of sewage in acid washing and alkali washing processes is as follows:
(1) neutralizing the sewage collected by the sewage collecting pipeline in the acid washing process and the sewage collected by the sewage collecting pipeline in the alkali washing process in a pH neutralization tank;
(2) when the pH value measured by the pH value measuring sensor is lower than a set value, transmitting a starting signal to the pneumatic diaphragm pump, and starting the pneumatic diaphragm pump to operate;
(3) after the pneumatic diaphragm pump is started, lime water is pumped into a pH neutralization pond to neutralize excessive acid-containing sewage;
(4) when the pH value measured by the pH value measuring sensor reaches a set value, transmitting a stop signal to the pneumatic diaphragm pump, and stopping the operation of the pneumatic diaphragm pump;
(5) naturally overflowing the sewage neutralized by the pH neutralization tank to a sewage treatment station;
in the pretreatment step of the step (2), the pretreatment method of the finished product piece brushing wastewater is as follows:
(1) collecting the scrubbed wastewater to a scrubbing wastewater collecting tank by a finished piece scrubbing wastewater collecting pipeline;
(2) when the liquid level sensor senses the liquid level, transmitting an opening signal to the first electromagnetic valve, and utilizing the second pneumatic diaphragm pump, a washing wastewater reinjection section and a grinding process to reinject a finished product sheet with a water pipeline to wash the wastewater to the section and grinding process for use;
(3) when the liquid level sensor cannot sense the liquid level, transmitting an opening signal to the second electromagnetic valve, opening an industrial tap water pipeline, supplementing the deficiency of finished product piece brushing wastewater by using the industrial tap water pipeline in the processes of reinjection slicing and grinding, and closing the first electromagnetic valve to prevent the industrial tap water from flowing back to the brushing wastewater collecting tank;
(4) when the liquid level in the brushing wastewater collecting tank is higher than the overflow port, the brushing wastewater automatically overflows to a sewage treatment station.
2. The intelligent wastewater treatment method of sapphire substrate factory as recited in claim 1, wherein said pH setting value is between 6-8.
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Application publication date: 20181211 Assignee: Zhejiang Zhaojing New Material Technology Co.,Ltd. Assignor: JIANGSU JESHINE NEW MATERIAL Co.,Ltd. Contract record no.: X2022980008188 Denomination of invention: An intelligent sewage treatment method for sapphire substrate factory Granted publication date: 20210903 License type: Common License Record date: 20220627 |
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