Photovoltaic glass grinding wastewater recovery process

Abstract

The invention discloses a photovoltaic glass grinding wastewater recovery process, which relates to the technical field of wastewater recovery, and comprises the following steps: carrying out preliminary precipitation on glass wastewater based on integrated wastewater treatment equipment; carrying out multi-medium filtration on the preliminarily precipitated glass wastewater by using a multi-medium filtration method based on a multi-medium filter, and recording the obtained glass wastewater as preliminarily filtered wastewater; carrying out secondary filtration by using a disc filter, a security filter and an ultrafiltration device; treating the filtered wastewater by using reverse osmosis water treatment equipment; the method is used for solving the problems that in an existing recycling method for the photovoltaic glass grinding wastewater, the treatment and discharge process of the grinding wastewater is simple, glass dust treatment is not thorough, consequently, follow-up recycling equipment is seriously polluted and blocked, and the equipment is abandoned.

Description

Technical Field

[0001] The invention relates to the technical field of wastewater recycling, and in particular to a photovoltaic glass grinding wastewater recycling process. Background Art

[0002] Photovoltaic glass grinding wastewater recycling aims to collect, treat and reuse the grinding wastewater generated in the photovoltaic glass production process to achieve water resource conservation and environmental protection; this process involves multiple steps and technologies to ensure that the wastewater is effectively treated and meets the reuse standards so that it can be reused in the cleaning, cooling and other links in the photovoltaic production process; it mainly includes: wastewater collection and pretreatment, separation and purification, grinding liquid component recovery, treatment and reuse of recovered grinding liquid, monitoring and evaluation, as well as management and optimization. Among them, the separation and purification of wastewater is mainly treated by wastewater filtration.

[0003] The existing recycling method for photovoltaic glass grinding wastewater is usually an improvement in water resource waste. By connecting a water pump to the wastewater supply port and setting a wastewater pneumatic valve and an exhaust pneumatic valve between the water inlet and the wastewater supply port, the excess water resources are collected during the wastewater treatment process, thereby reducing the water resource waste in the wastewater treatment process. This method can only optimize the waste of water resources, and the glass dust in the grinding wastewater is very fine and basically suspended in the grinding wastewater. In the existing treatment method, this part of the grinding wastewater is simply treated and then discharged. Even if it is recycled, it will cause subsequent recycling due to incomplete treatment of the glass dust in the grinding wastewater. The problem of equipment being abandoned due to serious pollution and blockage. For example, in the patent application with publication number CN115674019A, a photovoltaic glass edge grinding machine grinding wastewater recycling system is disclosed. This solution is to solve the problem of water resource waste in the process of glass wastewater recycling by setting a water pump, a wastewater pneumatic valve and an exhaust pneumatic valve. Other improvements in the recycling of photovoltaic glass grinding wastewater are usually improvements in the treatment of glass fragments and debris. This improvement method cannot effectively treat the glass wastewater, and will still lead to the problem of subsequent recycling equipment being abandoned due to serious pollution and blockage due to incomplete treatment of glass dust in the grinding wastewater. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems in the prior art to a certain extent. By proposing a photovoltaic glass grinding wastewater recovery process, it is used to solve the problem that the treatment and discharge process of grinding wastewater in the existing photovoltaic glass grinding wastewater recovery method is relatively simple, and the glass dust treatment is not thorough, resulting in serious pollution and blockage of subsequent recycling equipment and the abandonment of equipment.

[0005] To achieve the above-mentioned purpose, the present application provides a photovoltaic glass grinding wastewater recovery process, comprising the following steps:

[0006] The photovoltaic glass grinding wastewater is recorded as glass wastewater, and the glass wastewater is initially precipitated based on the integrated wastewater treatment equipment;

[0007] Using a multi-media filtration method based on a multi-media filter to perform multi-media filtration on the glass wastewater after preliminary precipitation, the obtained glass wastewater is recorded as preliminary filtered wastewater;

[0008] Use a disc filter, a security filter and an ultrafiltration device to perform secondary filtration, and record the filtered wastewater after the secondary filtration as filtered wastewater;

[0009] The filtered wastewater is treated using reverse osmosis water treatment equipment.

[0010] In some embodiments, the multimedia filtration method includes:

[0011] The medium that can filter the glass wastewater is recorded as filter medium JZ, and the use order of all filter media JZ is sorted based on the filtering standard, and all filter media JZ are recorded in sequence as filter medium JZ1 to filter medium JZ n ;

[0012] Insert filter medium JZ1 to filter medium JZ n Put them into the filter in sequence, for filter media JZ2 to filter media JZ n Any filter medium JZ n1 , before putting in the filter medium JZ n1 Remove the filter medium JZ from the filter n1-1 Then put in the filter medium JZ n1 , where n1 is a positive integer less than or equal to n and greater than or equal to 2.

[0013] In some embodiments, the multimedia filtering method further comprises:

[0014] For filter medium JZ1 to filter medium JZ n Any filter medium JZ n2 , in filter medium JZ n2 Before putting into the filter, use the filter standard analysis method to test the filter medium JZ n2 For analysis, standard filtering methods include:

[0015] Obtain glass wastewater of different concentrations and record them from low to high concentrations as concentration wastewater NF1 to concentration wastewater NF k ; For any concentration of wastewater NF k1 , the concentration of wastewater NF k1 The concentration at this time is recorded as the concentration before filtration. n2Put it into the filter, and put the concentrated wastewater NFk1 into the filter for filtration, and filter the filtered concentrated wastewater NF k1 The concentration is recorded as the post-filtration concentration; the pre-filtration concentration and post-filtration concentration corresponding to all concentrations of wastewater NF are obtained.

[0016] In some embodiments, the filtering criteria analysis method further comprises:

[0017] A plane rectangular coordinate system is established, recorded as the filtration analysis coordinate system, where the unit of the X-axis of the filtration analysis coordinate system is concentration, and the unit of the Y-axis is concentration; the pre-filtration concentration is used as the horizontal coordinate, and the post-filtration concentration is used as the vertical coordinate to obtain the corresponding points of all concentrations of wastewater NF in the filtration analysis coordinate system, and are recorded as filtration point GL1 to filtration point GL k ; Fit all the filter points GL into a straight line, recorded as the filter line.

[0018] In some embodiments, the filtering criteria analysis method further comprises:

[0019] Set all filtered points GL k The distances from the filter line are recorded as filter relative distance JL1 to filter relative distance JL k , the filtering points GL corresponding to the maximum and minimum values ​​of all filtering relative distances JL are recorded as filtering far points and filtering near points respectively.

[0020] In some embodiments, the filtering criteria analysis method further comprises:

[0021] Draw a perpendicular line from the far filtering point to the filtering line, record the foot of the perpendicular as the far perpendicular point, and record the triangle formed by the far perpendicular point, the far filtering point and the coordinate origin as the far triangle; draw a perpendicular line from the near filtering point to the filtering line, record the foot of the perpendicular as the near perpendicular point, and record the triangle formed by the near perpendicular point, the near filtering point and the coordinate origin as the near triangle; record the degree of the angle where the coordinate origin is located in the far triangle as the far degree, record the degree of the angle where the coordinate origin is located in the near triangle as the near degree, and record the closed interval formed by the far degree and the near degree as the filtering medium JZ n2 The filtering angle interval.

[0022] In some embodiments, the multimedia filtering method further comprises:

[0023] The filtration angle intervals of all filter media JZ are obtained using the filtration standard analysis method, where n2 is a positive integer less than or equal to n and greater than or equal to 1;

[0024] For filter medium JZ1 to filter medium JZ n Any filter medium JZ n2 , in filter medium JZ n2After being put into the filter, the concentration of the glass wastewater entering the filter is obtained and recorded as the real-time pre-filter concentration; the filter medium JZ in the filter n2 The concentration of the filtered glass wastewater is recorded as the real-time post-filtration concentration.

[0025] In some embodiments, the multimedia filtering method further comprises:

[0026] The filtration analysis coordinate system corresponding to the filter medium JZn2 is obtained, and points are marked in the filtration coordinate analysis coordinate system based on the real-time pre-filtration concentration and the real-time post-filtration concentration, which are recorded as real-time points.

[0027] In some embodiments, the multimedia filtering method further comprises:

[0028] From real-time point to filter medium JZ n2 Draw a perpendicular line to the corresponding filtered straight line, record the foot of the perpendicular as the real-time perpendicular point, record the triangle formed by the real-time perpendicular point, the real-time point and the coordinate origin as the real-time triangle, and record the degree of the angle where the coordinate origin is located in the real-time triangle as the real-time degree.

[0029] In some embodiments, the multimedia filtering method further comprises:

[0030] When the real-time reading is in the filter medium JZ n2 When the real-time reading is within the filtering angle interval, the subsequent filtering is continued; when the real-time reading is outside the filtering angle interval, the filter medium JZ in the filter is n2 The composition of the filtered glass wastewater is tested, and subsequent filtration is adjusted based on the test results.

[0031] Beneficial effects of the present invention: the present invention first performs preliminary precipitation on glass wastewater based on an integrated wastewater treatment device; then performs multi-media filtration on the glass wastewater after preliminary precipitation using a multi-media filtration method based on a multi-media filter, and records the obtained glass wastewater as preliminary filtered wastewater. The advantage of this is that by using a multi-media filtration method to perform multi-media filtration on the glass wastewater after preliminary precipitation, it is helpful to effectively control the concentration of the filtered glass wastewater during the filtering treatment using the medium, and can effectively treat the filtered glass wastewater when the concentration is relatively large or relatively small, thereby preventing the problem of serious pollution and blockage of subsequent recycling equipment and abandonment of equipment due to incomplete treatment of glass dust in the glass wastewater;

[0032] The present invention also performs secondary filtration by using a disc filter, a security filter and an ultrafiltration device, and records the filtered wastewater after the secondary filtration as filtered wastewater; finally, the filtered wastewater is treated with a reverse osmosis water treatment device. The advantage of this is that, by performing secondary filtration and treatment with a reverse osmosis water treatment device, the glass wastewater filtered by the multi-media filter can be further filtered at a deeper level, ensuring that the glass dust in the filtered glass wastewater is completely treated, thereby protecting subsequent recycling equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a flow chart of the steps of the method of the present invention;

[0034] Figure 2 It is a schematic diagram of the filtering analysis coordinate system of the present invention;

[0035] Figure 3 It is a principle block diagram of the electronic device of the present invention. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Example 1, first aspect, please refer to Figure 1 As shown, the present application provides a photovoltaic glass grinding wastewater recovery process, comprising the following steps:

[0038] Step S1, recording photovoltaic glass grinding wastewater as glass wastewater, and performing preliminary precipitation on the glass wastewater based on an integrated wastewater treatment device;

[0039] Step S2, performing multi-media filtration on the glass wastewater after preliminary precipitation using a multi-media filtration method based on a multi-media filter, and recording the obtained glass wastewater as preliminary filtered wastewater;

[0040] The multi-media filtering method comprises: step S201, recording a medium capable of filtering glass wastewater as a filter medium JZ, sorting the use order of all the filter media JZ based on the filtering standard, and recording all the filter media JZ in sequence as filter media JZ1 to filter media JZ n ;

[0041] Insert filter medium JZ1 to filter medium JZ n Put them into the filter in sequence, for filter media JZ2 to filter media JZ n Any filter medium JZn1 , before putting in the filter medium JZ n1 Remove the filter medium JZ from the filter n1-1 Then put in the filter medium JZ n1 , where n1 is a positive integer less than or equal to n and greater than or equal to 2;

[0042] Step S202: for filter media JZ1 to filter media JZ n Any filter medium JZ n2 , in filter medium JZ n2 Before putting into the filter, use the filter standard analysis method to test the filter medium JZ n2 For analysis, standard filtering methods include:

[0043] Step S2021, obtaining glass wastewater of different concentrations, and recording them in order from low to high concentrations as wastewater of concentration NF1 to wastewater of concentration NF k ; For any concentration of wastewater NF k1 , the concentration of wastewater NF k1 The concentration at this time is recorded as the concentration before filtration. n2 Put it into the filter, and put the concentrated wastewater NFk1 into the filter for filtration, and filter the filtered concentrated wastewater NF k1 The concentration is recorded as the post-filtration concentration; the pre-filtration concentration and post-filtration concentration corresponding to all concentrations of wastewater NF are obtained;

[0044] Step S2022, establish a plane rectangular coordinate system, recorded as the filtration analysis coordinate system, wherein the unit of the X-axis of the filtration analysis coordinate system is concentration, and the unit of the Y-axis is concentration; take the concentration before filtration as the horizontal coordinate and the concentration after filtration as the vertical coordinate to obtain the corresponding points of all concentrations of wastewater NF in the filtration analysis coordinate system, and record them as filtration point GL1 to filtration point GL k ; Fit all the filter points GL into a straight line, recorded as the filter line;

[0045] In the specific implementation process, for example, in a data processing process, the filtering analysis coordinate system obtained is as follows Figure 2 As shown, ○ is the position of all the filtering points GL, DD1 and DD3 are the filtering far point and filtering near point respectively, and the straight line LL1 is the filtering straight line. Since the filtering near point is in the filtering straight line, the obtained near perpendicular point coincides with the filtering near point, and the near degree is 0. Point DD2 is the far perpendicular point corresponding to the filtering far point. Through analysis, it can be obtained that the triangle formed by the coordinate origin, point DD1 and point DD2 is the far triangle, and the degree of the angle DD1-coordinate origin-DD2 is the far degree.

[0046] Step S2023: all the filtered points GL kThe distances from the filter line are recorded as filter relative distance JL1 to filter relative distance JL k , the filtering points GL corresponding to the maximum and minimum values ​​of all filtering relative distances JL are recorded as filtering far points and filtering near points respectively;

[0047] Step S2024: Draw a perpendicular line from the far filtering point to the filtering line, record the foot of the perpendicular as the far perpendicular point, and record the triangle formed by the far perpendicular point, the far filtering point, and the coordinate origin as the far triangle; draw a perpendicular line from the near filtering point to the filtering line, record the foot of the perpendicular as the near perpendicular point, and record the triangle formed by the near perpendicular point, the near filtering point, and the coordinate origin as the near triangle; record the degree of the angle where the coordinate origin is located in the far triangle as the far degree, record the degree of the angle where the coordinate origin is located in the near triangle as the near degree, and record the closed interval formed by the far degree and the near degree as the filtering medium JZ n2 The filtering angle interval;

[0048] Step S203, using the filtering standard analysis method to obtain the filtering angle intervals of all filtering media JZ, wherein n2 is a positive integer less than or equal to n and greater than or equal to 1;

[0049] For filter medium JZ1 to filter medium JZ n Any filter medium JZ n2 , in filter medium JZ n2 After being put into the filter, the concentration of the glass wastewater entering the filter is obtained and recorded as the real-time pre-filter concentration; the filter medium JZ in the filter n2 The concentration of the filtered glass wastewater is recorded as the real-time post-filtration concentration;

[0050] Step S204, obtaining the filtration analysis coordinate system corresponding to the filter medium JZn2, and marking points in the filtration coordinate analysis coordinate system based on the real-time pre-filtration concentration and the real-time post-filtration concentration, and recording them as real-time points;

[0051] Step S205, from the real-time point to the filter medium JZ n2 Draw a perpendicular line to the corresponding filtered straight line, record the foot of the perpendicular as the real-time perpendicular point, record the triangle formed by the real-time perpendicular point, the real-time point and the coordinate origin as the real-time triangle, and record the degree of the angle where the coordinate origin is located in the real-time triangle as the real-time degree

[0052] Step S206, when the real-time reading is in the filter medium JZ n2 When the real-time reading is within the filtering angle interval, the subsequent filtering is continued; when the real-time reading is outside the filtering angle interval, the filter medium JZ in the filter is n2 The composition of the filtered glass wastewater is tested, and subsequent filtration is adjusted based on the test results.

[0053] Step S3, using a disc filter, a security filter and an ultrafiltration device to perform secondary filtration, and recording the filtered wastewater after the secondary filtration as filtered wastewater;

[0054] Step S4, using reverse osmosis water treatment equipment to treat the filtered wastewater.

[0055] Example 2, please refer to Figure 3 As shown, the present application also provides an electronic device, which may include: a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other through the communication bus. The memory stores computer-readable instructions, and the processor can call the instructions in the memory. When the computer-readable instructions are executed by the processor, the steps in a photovoltaic glass grinding wastewater recovery process are executed to achieve the following functions: first, the glass wastewater is initially precipitated based on an integrated wastewater treatment device; then, the glass wastewater after the initial precipitation is subjected to multi-media filtration using a multi-media filtration method based on a multi-media filter, and the obtained glass wastewater is recorded as the initial filtered wastewater, and a secondary filtration is performed by using a disc filter, a security filter and an ultrafiltration device, and the filtered wastewater after the secondary filtration is recorded as the filtered wastewater; finally, the filtered wastewater is treated using a reverse osmosis water treatment device.

[0056] In addition, the logic instructions in the above-mentioned memory can be implemented in the form of software functional units and can be stored in a computer-readable storage medium when sold or used as an independent product. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art, and the computer software product is stored in a storage medium, including several instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a disk or an optical disk.

[0057] Example 3. The present application also provides a computer program product, which includes a computer program stored on a computer-readable storage medium, and the computer program includes program instructions. When the program instructions are executed by a computer, the computer can execute a photovoltaic glass grinding wastewater recovery process provided by the above-mentioned methods, and the method includes: first, based on an integrated wastewater treatment device, the glass wastewater is preliminarily precipitated; then, based on a multi-media filter, a multi-media filtration method is used to perform multi-media filtration on the glass wastewater after the preliminary precipitation, and the obtained glass wastewater is recorded as preliminary filtered wastewater; a secondary filtration is performed by using a disc filter, a security filter and an ultrafiltration device, and the filtered wastewater after the secondary filtration is recorded as filtered wastewater; finally, the filtered wastewater is treated using a reverse osmosis water treatment device.

[0058] Example 4. The present application also provides a computer-readable storage medium. The present application provides a storage medium on which a computer program is stored. When the computer program is executed by a processor, the steps in the above photovoltaic glass grinding wastewater recovery process are executed to achieve the following functions: first, the glass wastewater is preliminarily precipitated based on an integrated wastewater treatment device; then, the glass wastewater after the preliminarily precipitation is subjected to multi-media filtration using a multi-media filtration method based on a multi-media filter, and the obtained glass wastewater is recorded as preliminarily filtered wastewater; secondary filtration is performed by using a disc filter, a security filter and an ultrafiltration device, and the filtered wastewater after the secondary filtration is recorded as filtered wastewater; finally, the filtered wastewater is treated using reverse osmosis water treatment equipment.

[0059] Through the description of the above implementation methods, the embodiments of the present invention can be provided as methods, systems or computer program products. Based on such an understanding, the above technical solutions can be essentially or partly contributed to the prior art in the form of software products, which can be stored in a computer-readable storage medium, such as ROM / RAM, a magnetic disk, an optical disk, etc., and include several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0060] In the embodiments provided in the present application, it should be understood that the disclosed system or method can be implemented in other ways. The embodiments described above are merely schematic. For example, the division of modules or units is only a logical function division. There may be other division methods in actual implementation. For example, multiple modules or units can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, and the indirect coupling or communication connection of systems, modules and units can be electrical, mechanical or other forms.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A photovoltaic glass grinding wastewater recovery process, characterized in that: The steps include: The photovoltaic glass grinding wastewater is recorded as glass wastewater, and the glass wastewater is initially precipitated based on the integrated wastewater treatment equipment; Using a multi-media filtration method based on a multi-media filter to perform multi-media filtration on the glass wastewater after preliminary precipitation, the obtained glass wastewater is recorded as preliminary filtered wastewater; Use a disc filter, a security filter and an ultrafiltration device to perform secondary filtration, and record the filtered wastewater after the secondary filtration as filtered wastewater; The filtered wastewater is treated using reverse osmosis water treatment equipment.

2. A photovoltaic glass grinding wastewater recovery process according to claim 1, characterized in that: Multi-media filtration methods include: The medium that can filter the glass wastewater is recorded as filter medium JZ, and the use order of all filter media JZ is sorted based on the filtering standard, and all filter media JZ are recorded in sequence as filter medium JZ1 to filter medium JZ n ; Insert filter medium JZ1 to filter medium JZ n Put them into the filter in sequence, for filter media JZ2 to filter media JZ n Any filter medium JZ n1 , before putting in the filter medium JZ n1 Remove the filter medium JZ from the filter n1-1 Then put in the filter medium JZ n1 , where n1 is a positive integer less than or equal to n and greater than or equal to 2.

3. A photovoltaic glass grinding wastewater recovery process according to claim 2, characterized in that: Multi-media filtration methods also include: For filter medium JZ1 to filter medium JZ n Any filter medium JZ n2 , in filter medium JZ n2 Before putting into the filter, use the filter standard analysis method to test the filter medium JZ n2 For analysis, standard filtering methods include: Obtain glass wastewater of different concentrations and record them from low to high concentrations as concentration wastewater NF1 to concentration wastewater NF k ; For any wastewater concentration NF k1 , the concentration of wastewater NF k1 The concentration at this time is recorded as the concentration before filtration. n2 Put it into the filter, and put the concentrated wastewater NFk1 into the filter for filtration, and filter the filtered concentrated wastewater NF k1 The concentration is recorded as the post-filtration concentration; the pre-filtration concentration and post-filtration concentration corresponding to all concentrations of wastewater NF are obtained.

4. A photovoltaic glass grinding wastewater recovery process according to claim 3, characterized in that: The filter standard analysis method also includes: A plane rectangular coordinate system is established, recorded as the filtration analysis coordinate system, where the unit of the X-axis of the filtration analysis coordinate system is concentration, and the unit of the Y-axis is concentration; the pre-filtration concentration is used as the horizontal coordinate, and the post-filtration concentration is used as the vertical coordinate to obtain the corresponding points of all concentrations of wastewater NF in the filtration analysis coordinate system, and are recorded as filtration point GL1 to filtration point GL k ; Fit all the filter points GL into a straight line, recorded as the filter line.

5. A photovoltaic glass grinding wastewater recovery process according to claim 4, characterized in that: The filter standard analysis method also includes: Set all filtered points GL k The distances from the filter line are recorded as filter relative distance JL1 to filter relative distance JL k , the filtering points GL corresponding to the maximum and minimum values ​​of all filtering relative distances JL are recorded as filtering far points and filtering near points respectively.

6. A photovoltaic glass grinding wastewater recovery process according to claim 5, characterized in that: The filter standard analysis method also includes: Draw a perpendicular line from the far filtering point to the filtering line, record the foot of the perpendicular as the far perpendicular point, and record the triangle formed by the far perpendicular point, the far filtering point and the coordinate origin as the far triangle; draw a perpendicular line from the near filtering point to the filtering line, record the foot of the perpendicular as the near perpendicular point, and record the triangle formed by the near perpendicular point, the near filtering point and the coordinate origin as the near triangle; record the degree of the angle where the coordinate origin is located in the far triangle as the far degree, record the degree of the angle where the coordinate origin is located in the near triangle as the near degree, and record the closed interval formed by the far degree and the near degree as the filtering medium JZ n2 The filtering angle interval.

7. A photovoltaic glass grinding wastewater recovery process according to claim 6, characterized in that: Multi-media filtration methods also include: The filtration angle intervals of all filter media JZ are obtained using the filtration standard analysis method, where n2 is a positive integer less than or equal to n and greater than or equal to 1; For filter medium JZ1 to filter medium JZ n Any filter medium JZ n2 , in filter medium JZ n2 After being put into the filter, the concentration of the glass wastewater entering the filter is obtained and recorded as the real-time pre-filter concentration; the filter medium JZ in the filter n2 The concentration of the filtered glass wastewater is recorded as the real-time post-filtration concentration.

8. A photovoltaic glass grinding wastewater recovery process according to claim 7, characterized in that: Multi-media filtration methods also include: The filtration analysis coordinate system corresponding to the filter medium JZn2 is obtained, and points are marked in the filtration coordinate analysis coordinate system based on the real-time pre-filtration concentration and the real-time post-filtration concentration, which are recorded as real-time points.

9. A photovoltaic glass grinding wastewater recovery process according to claim 8, characterized in that: Multi-media filtration methods also include: From real-time point to filter medium JZ n2 Draw a perpendicular line to the corresponding filtered straight line, record the foot of the perpendicular as the real-time perpendicular point, record the triangle formed by the real-time perpendicular point, the real-time point and the coordinate origin as the real-time triangle, and record the degree of the angle where the coordinate origin is located in the real-time triangle as the real-time degree.

10. A photovoltaic glass grinding wastewater recycling process according to claim 9, characterized in that: Multi-media filtration methods also include: When the real-time degree is in the filter medium JZ n2 When the real-time reading is within the filtering angle interval, the subsequent filtering is continued; when the real-time reading is outside the filtering angle interval, the filter medium JZ in the filter is n2 The composition of the filtered glass wastewater is tested, and subsequent filtration is adjusted based on the test results.

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