Surface treatment wastewater treatment process for mobile phone middle plate

Abstract

The application discloses a kind of mobile phone middle plate surface treatment wastewater treatment process, wastewater treatment process is realized based on wastewater treatment device, wastewater treatment process includes the following steps: S1, first cleaning: the product to be cleaned is placed into first cleaning pool, and the first cleaning wastewater generated is discharged to waste liquid recovery tank through first drain pipe;S2, secondary cleaning: the product to be cleaned is taken out from first cleaning pool and placed into second cleaning pool, and the secondary cleaning wastewater generated is discharged to waste liquid temporary storage tank through second drain pipe;S3, wastewater circulation: the secondary cleaning wastewater in waste liquid temporary storage tank is supplemented to the main liquid supply pipe of first spraying device through backwater pipe;S4, wastewater discharge: when the first water quality probe feedback water quality in waste liquid recovery tank reaches the set threshold, the wastewater is discharged to wastewater treatment tank through drain main pipe.The application compared with prior art, solve the problem of low adsorption treatment efficiency and treatment reagent waste of cleaning wastewater generated after product surface treatment.

Description

Technical Field

[0001] This invention relates to the field of surface treatment technology, and in particular to a wastewater treatment process for the surface treatment of mobile phone mid-plates. Background Technology

[0002] Surface treatment refers to the process of artificially forming a surface layer on a substrate material that has different mechanical, physical, and chemical properties from the substrate. After a product undergoes surface treatment processes such as electroplating, it is usually necessary to clean the surface of any residual electroplating solution, and the wastewater generated after cleaning must be treated to render it harmless to avoid direct discharge.

[0003] If a large amount of cleaning solution is used directly after the product has undergone surface treatment, the concentration of pollutants in the resulting wastewater will be low. This means that when wastewater is treated through methods such as biological adsorption flocculation sedimentation or chemical precipitation, the role of flocculants or chemical agents will not be fully utilized, resulting in material waste. Summary of the Invention

[0004] The purpose of this invention is to provide a wastewater treatment process for the surface treatment of mobile phone mid-plates, so as to solve the problem that the low concentration of pollutants in the cleaning wastewater generated after the surface treatment of the product leads to low wastewater adsorption treatment efficiency and waste of treatment agents.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a wastewater treatment process for the surface treatment of mobile phone mid-plates, wherein the wastewater treatment process is implemented based on a wastewater treatment device, and the wastewater treatment device includes:

[0006] The first cleaning pool is equipped with a first spray device above it, a main liquid supply pipe is installed on the first spray device, a cleaning liquid replenishment pipe is installed on the main liquid supply pipe, a first solenoid valve is installed on the cleaning liquid replenishment pipe, and a first drain pipe is installed at the bottom of the first spray device.

[0007] The second cleaning pool is equipped with a second spray device above it, a second spray liquid supply pipe on the second spray device, and a second drain pipe at the bottom of the second cleaning pool.

[0008] Waste liquid temporary storage tank is equipped with a return water pipe, which is connected to the main liquid supply pipe. A water pump is installed on the return water pipe, and a second drain pipe is connected to the waste liquid temporary storage tank.

[0009] The waste liquid recovery tank is connected to the wastewater treatment tank through the drainage pipe. The waste liquid recovery tank is equipped with a first water quality probe, which is connected to a water quality analyzer.

[0010] Wastewater treatment processes include the following steps:

[0011] S1. Primary cleaning: The product to be cleaned is placed in the first cleaning tank, and the first spray device sprays the product to be cleaned. The primary cleaning wastewater generated is discharged to the waste liquid recovery tank through the first drain pipe.

[0012] S2, Secondary cleaning: The product to be cleaned is taken out from the first cleaning pool and placed into the second cleaning pool. The second spray device is started to clean the product to be cleaned. The secondary cleaning wastewater generated is discharged to the waste liquid storage tank through the second drain pipe.

[0013] S3. Wastewater circulation: The secondary cleaning wastewater in the waste liquid temporary storage tank is replenished to the main liquid supply pipe of the first spray device through the return water pipe, so that the first spray device can perform the first cleaning in the first cleaning pool through the secondary cleaning wastewater.

[0014] S4. Wastewater Discharge: After the wastewater in the waste liquid recovery tank has settled, when the first water quality probe indicates that the water quality in the waste liquid recovery tank has reached the set threshold, the wastewater will be discharged to the wastewater treatment pool through the drainage pipe.

[0015] As a further description of the above technical solution:

[0016] The waste liquid recovery tank is equipped with several parallel partitions, with leakage holes formed at the ends of the partitions. Several locking plates are provided on the back of the partitions, and a driving component is provided on the back of the locking plates. The driving component is used to drive the locking plates to close the leakage holes.

[0017] As a further description of the above technical solution:

[0018] Several first water quality probes are installed inside the waste liquid recovery tank. The first water quality probes are arranged at intervals with the partitions. A drainage branch pipe is installed on one side of the first water quality probe, and the drainage branch pipe is connected to the main drainage pipe.

[0019] As a further description of the above technical solution:

[0020] The inner wall of the waste liquid recovery tank is provided with a protrusion, and the locking plate is provided with a groove corresponding to the protrusion.

[0021] As a further description of the above technical solution:

[0022] The first spraying device includes a first spraying arm, which is rotatably mounted on the first spraying device. The bottom of the first spraying arm is provided with a plurality of first spraying holes. A first synchronous pulley is provided on the first spraying arm. A second synchronous pulley is provided at the output end of the first servo motor. The second synchronous pulley is connected to the first synchronous pulley through a first synchronous belt.

[0023] As a further description of the above technical solution:

[0024] The diameter of the first spray hole is larger than the diameter of the second spray hole on the second spray device.

[0025] As a further description of the above technical solution:

[0026] The waste liquid storage tank is also equipped with a third drain pipe, which is connected to a third solenoid valve. The waste liquid storage tank is also equipped with a second water quality probe.

[0027] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0028] 1. In this invention, the wastewater from the second cleaning of the product to be cleaned in the second cleaning tank has a low concentration of pollutants. After recycling, it is reused by the first spray device. On the one hand, this avoids the waste of cleaning liquid, and on the other hand, it can increase the concentration of pollutants in the wastewater generated during the first cleaning, thereby ensuring the concentration of pollutants in the cleaning wastewater in the waste liquid recovery tank.

[0029] 2. In this invention, the wastewater generated during cleaning is left to stand in the waste liquid recovery tank. When the first water quality probe indicates that the water quality in the waste liquid recovery tank has reached a set threshold, the wastewater is discharged through the drainage pipe to the wastewater treatment pond for treatment. This effectively ensures the concentration of pollutants in the cleaning wastewater generated during cleaning, resulting in high wastewater adsorption treatment efficiency and avoiding waste of treatment agents. Attached Figure Description

[0030] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the wastewater treatment device in a mobile phone mid-plate surface treatment wastewater treatment process. Figure 1 .

[0032] Figure 2 This is a schematic diagram of the wastewater treatment device in a mobile phone mid-plate surface treatment wastewater treatment process. Figure 2 .

[0033] Figure 3 This is a schematic diagram of the wastewater treatment device in a mobile phone mid-plate surface treatment wastewater treatment process. Figure 3 .

[0034] Legend:

[0035] 1. First cleaning tank; 11. First spray device; 111. Main liquid supply pipe; 112. Cleaning liquid replenishment pipe; 1121. First solenoid valve; 113. First drain pipe; 114. First spray arm; 1141. First spray hole; 115. First servo motor; 116. First synchronous belt; 2. Second cleaning tank; 21. Second spray device; 211. Second spray liquid supply pipe; 22. Second drain pipe; 3. Waste liquid temporary storage tank; 31. Return water pipe; 311. Water pump; 32. Third drain pipe; 33. Second water quality probe; 4. Waste liquid recovery tank; 41. Main drain pipe; 42. First water quality probe; 421. Drain branch pipe; 43. Partition; 431. Leakage hole; 432. Locking plate; 433. Drive component; Detailed Implementation

[0036] To make the objectives, 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 accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0038] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0039] In the description of the embodiments of the present invention, it should be noted that the terms "upper" and "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0040] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0041] Example 1

[0042] Please see Figure 1-3 This invention provides a technical solution: a wastewater treatment process for the surface treatment of mobile phone mid-plates, wherein the wastewater treatment process is implemented based on a wastewater treatment device, and the wastewater treatment device includes:

[0043] The first cleaning pool 1 is provided with a first spray device 11 above it, a main liquid supply pipe 111 is provided on the first spray device 11, a cleaning liquid replenishment pipe is provided on the main liquid supply pipe 111, a first solenoid valve 1121 is provided on the cleaning liquid replenishment pipe 112, and a first drain pipe 113 is provided at the bottom of the first spray device 11.

[0044] The second cleaning pool 2 is equipped with a second spray device 21 above it, a second spray liquid supply pipe 211 is provided on the second spray device 21, and a second drain pipe 22 is provided at the bottom of the second cleaning pool 2.

[0045] Waste liquid temporary storage tank 3 is equipped with a return water pipe 31, which is connected to the main liquid supply pipe 111. A water pump 311 is installed on the return water pipe 31, and the second drain pipe 22 is connected to the waste liquid temporary storage tank 3.

[0046] Waste liquid recovery tank 4 is connected to wastewater treatment tank through drainage pipe 41. A first water quality probe 42 is installed in waste liquid recovery tank 4, and the first water quality probe 42 is connected to water quality analyzer.

[0047] Wastewater treatment processes include the following steps:

[0048] S1. Primary cleaning: The product to be cleaned is placed in the first cleaning pool 1, and the first spray device 11 sprays the product to be cleaned. The primary cleaning wastewater generated is discharged to the waste liquid recovery tank 4 through the first drain pipe 113.

[0049] S2, Secondary cleaning: The product to be cleaned is taken out from the first cleaning pool 1 and placed into the second cleaning pool 2. The second spray device 21 is started to clean the product to be cleaned. The secondary cleaning wastewater generated is discharged to the waste liquid storage tank 3 through the second drain pipe 22.

[0050] S3. Wastewater circulation: The secondary cleaning wastewater in the waste liquid storage tank 3 is replenished to the main liquid supply pipe 111 of the first spray device 11 through the return water pipe 31, so that the first spray device 11 can perform a primary cleaning in the first cleaning pool 1 through the secondary cleaning wastewater.

[0051] S4. Wastewater discharge: After the wastewater in the waste liquid recovery tank 4 has been left to stand, when the first water quality probe 42 indicates that the water quality in the waste liquid recovery tank 4 has reached the set threshold, the wastewater will be discharged to the wastewater treatment pool through the drainage pipe 41.

[0052] also, Figure 1-3 In the diagram, the waste liquid temporary storage tank 3 and the waste liquid recovery tank 4 are partially cut out, both of which conceal the front panel.

[0053] When the wastewater supplied by the waste liquid storage tank 3 is insufficient for the second cleaning, the first solenoid valve 1121 is opened, and the main liquid supply pipe 111 can be replenished with unused cleaning liquid through the cleaning liquid replenishment pipe 112.

[0054] The waste liquid recovery tank 4 is provided with several parallel partitions 43. The ends of the partitions 43 form leakage holes 431. Several locking plates 432 are provided on the back of the partitions 43. A driving component 433 is provided on the back of the locking plate 432. The driving component 433 is used to drive the locking plate 432 to close the leakage holes 431.

[0055] Several first water quality probes 42 are installed inside the waste liquid recovery tank 4. The first water quality probes 42 are arranged at intervals with the partition 43. A drainage branch pipe 421 is provided on one side of the first water quality probe 42, and the drainage branch pipe 421 is connected to the main drainage pipe 41.

[0056] The drive component 433 can specifically be an electric actuator. When the wastewater generated during cleaning is left to settle in the wastewater recovery tank 4, pollutants in the wastewater tend to settle to the bottom. Several partitions 43 form a labyrinthine structure within the wastewater recovery tank 4, facilitating the locking plate 432 to separate the space between the upper and lower partitions 43. First water quality probes 42 at different heights detect the water quality of wastewater in different layers, thereby allowing targeted drainage through drainage branch pipes 421 at different heights. The drainage branch pipes 421 are controlled by solenoid valves to open and close, effectively improving drainage efficiency and controlling the concentration of pollutants in the discharged wastewater.

[0057] The inner wall of the waste liquid recovery tank 4 is provided with a protrusion, and the locking plate 432 is provided with a groove corresponding to the protrusion. When the locking plate 432 is extended, it is inserted and locked with the protrusion, effectively preventing the locking plate 432 from deforming and falling, and ensuring the sealing effect.

[0058] The first spraying device 11 includes a first spraying arm 114, which is rotatably mounted on the first spraying device 11. The bottom of the first spraying arm 114 has several first spray holes 1141. A first synchronous pulley is mounted on the first spraying arm 114, and a second synchronous pulley is mounted on the output end of a first servo motor 115. The second synchronous pulley is connected to the first synchronous pulley via a first synchronous belt 116. The first servo motor 115 intermittently reverses direction, causing the first synchronous belt 116 to drive the first spraying arm 114 to swing back and forth, thereby improving the cleaning effect of the first spraying arm 114 on the cleaning product.

[0059] The diameter of the first spray hole 1141 is larger than the diameter of the second spray hole on the second spray device 21. During the first cleaning of the product to be cleaned, the diameter of the first spray hole 1141 is larger to ensure the amount of cleaning liquid sprayed. During the second cleaning, the diameter of the second spray hole is smaller to increase the water flow impact force and improve the cleaning effect.

[0060] The waste liquid storage tank 3 is also equipped with a third drain pipe 32, which is connected to a third solenoid valve. The waste liquid storage tank 32 is also equipped with a second water quality probe 33. The waste liquid storage tank 3 uses the second water quality probe 33 to detect water quality. If the water quality exceeds a set threshold S3, the wastewater generated from the second cleaning does not meet the requirements for reuse and reaches the set threshold for direct discharge. The third solenoid valve on the third drain pipe 32 opens, directly discharging the wastewater into the waste liquid recovery tank 4. This indicates that the product to be cleaned in the second cleaning was not sufficiently cleaned. After draining the wastewater, a second cleaning is performed. If the water quality exceeds a set threshold S2 but is less than a set threshold S3, it indicates that the product to be cleaned in the second cleaning was not sufficiently cleaned, and the second cleaning time is extended. When the water quality of the wastewater collected in the waste liquid storage tank 3 is lower than the set threshold S2, the wastewater is temporarily stored in the waste liquid storage tank 3, awaiting recycling by the first spray device 11. The value of threshold S3 is greater than the value of threshold S2.

[0061] Working Principle: The wastewater from the second cleaning of the product in the second cleaning tank 2, due to its low pollutant concentration, is recycled and reused by the first spray device 11. This avoids waste of cleaning solution and increases the pollutant concentration in the wastewater generated during the first cleaning, thus ensuring the pollutant concentration of the cleaning wastewater in the wastewater recovery tank 4. The cleaning wastewater is left to stand in the wastewater recovery tank 4 until the first water quality probe 42 indicates that the water quality in the wastewater recovery tank 4 has reached a set threshold. Then, the wastewater is discharged through the drainage pipe 41 to the wastewater treatment tank for treatment, effectively ensuring the pollutant concentration in the cleaning wastewater, resulting in high wastewater adsorption treatment efficiency and avoiding waste of treatment agents.

[0062] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A wastewater treatment process for the surface treatment of mobile phone mid-plates, characterized in that, The wastewater treatment process is implemented based on a wastewater treatment device, which includes: A first cleaning pool is provided above a first spray device, a main liquid supply pipe is provided on the first spray device, a cleaning liquid replenishment pipe is provided on the main liquid supply pipe, a first solenoid valve is provided on the cleaning liquid replenishment pipe, and a first drain pipe is provided at the bottom of the first spray device. The second cleaning pool is equipped with a second spray device above it, a second spray liquid supply pipe is installed on the second spray device, and a second drain pipe is installed at the bottom of the second cleaning pool. A waste liquid temporary storage tank is provided with a return water pipe, which is connected to the main liquid supply pipe. A water pump is provided on the return water pipe, and the second drain pipe is connected to the waste liquid temporary storage tank. A waste liquid recovery tank is connected to a wastewater treatment tank via a drainage main pipe. A first water quality probe is installed inside the waste liquid recovery tank, and the first water quality probe is connected to a water quality analyzer. The waste liquid recovery tank is equipped with several parallel partitions, each with a leakage hole at its end. Several locking plates are located on the back of each partition, and a driving component is located on the back of each locking plate. The driving component is used to drive the locking plate to close the leakage hole. The waste liquid recovery tank is equipped with several first water quality probes, which are arranged at intervals with the partition. A drainage branch pipe is provided on one side of each first water quality probe, and the drainage branch pipe is connected to the main drainage pipe. The first water quality probe at different heights detects the water quality of wastewater in different layers of space, and then drains the wastewater through drainage branch pipes at different heights in a targeted manner to control the concentration of pollutants in the discharged wastewater. This effectively ensures the concentration of pollutants in the clean wastewater generated by cleaning, resulting in high wastewater adsorption treatment efficiency and avoiding waste of treatment agents. The wastewater treatment process includes the following steps: S1. Primary cleaning: The product to be cleaned is placed in the first cleaning tank, and the first spray device sprays the product to be cleaned. The primary cleaning wastewater generated is discharged to the waste liquid recovery tank through the first drain pipe. S2, Secondary cleaning: The product to be cleaned is taken out from the first cleaning pool and placed into the second cleaning pool. The second spray device is started to clean the product to be cleaned. The secondary cleaning wastewater generated is discharged to the waste liquid storage tank through the second drain pipe. S3. Wastewater circulation: The secondary cleaning wastewater in the waste liquid temporary storage tank is replenished to the main liquid supply pipe of the first spray device through the return water pipe, so that the first spray device can perform the first cleaning in the first cleaning pool through the secondary cleaning wastewater. S4. Wastewater Discharge: After the wastewater in the waste liquid recovery tank has been left to stand, when the first water quality probe indicates that the water quality in the waste liquid recovery tank has reached the set threshold, the wastewater will be discharged to the wastewater treatment pool through the drainage pipe.

2. The wastewater treatment process for mobile phone mid-plate surface treatment according to claim 1, characterized in that, The inner wall of the waste liquid recovery tank is provided with a protrusion, and the locking plate is provided with a groove corresponding to the protrusion.

3. The wastewater treatment process for mobile phone mid-plate surface treatment according to claim 1, characterized in that, The first spraying device includes a first spraying arm, which is rotatably mounted on the first spraying device. The bottom of the first spraying arm is provided with a plurality of first spraying holes. A first synchronous pulley is provided on the first spraying arm. A second synchronous pulley is provided at the output end of the first servo motor. The second synchronous pulley is connected to the first synchronous pulley through a first synchronous belt.

4. The wastewater treatment process for mobile phone mid-plate surface treatment according to claim 3, characterized in that, The diameter of the first spray hole is larger than the diameter of the second spray hole on the second spray device.

5. The wastewater treatment process for the surface treatment of mobile phone mid-plates according to claim 1, characterized in that, The waste liquid temporary storage tank is also equipped with a third drain pipe, which is equipped with a third solenoid valve. The third drain pipe is connected to the waste liquid recovery tank, and a second water quality probe is also installed inside the waste liquid temporary storage tank.

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