Silver plating production line edge water treatment system

Abstract

The utility model relates to the technical field of electroplating water treatment, and discloses a silver plating production line edge water treatment system which comprises a first raw water barrel, a second raw water barrel, a first RO membrane and a second RO membrane, the first raw water barrel is connected with the first RO membrane through a first booster pump, a water production pipeline of the first RO membrane is connected to a first rinsing bath, a concentrated water pipeline of the first RO membrane is connected to an RO concentrated water barrel, and the second RO membrane is connected to a second rinsing bath. An overflow pipeline of the first rinsing bath is connected to a first raw water bucket; the second raw water bucket is connected with a second RO membrane through a second booster pump, a water production pipeline of the second RO membrane is connected to a second rinsing bath, an overflow pipeline of the second rinsing bath is connected to the second raw water bucket, a concentrated water pipeline of the second RO membrane is connected to the first rinsing bath, and an overflow pipeline of the first rinsing bath is connected to the first raw water bucket. According to the silver plating production line edge water treatment system, production line cleaning water can be recycled after being purified, the purpose of zero emission is achieved, and daily production and maintenance cost is greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of electroplating water treatment technology, and in particular to a line edge water treatment system for a silver plating production line. Background Technology

[0002] Silver plating is a process that uses electrolysis to deposit a thin layer of silver onto the surface of a workpiece for decoration, protection, and to acquire certain new properties. During the silver plating process, multiple steps require repeated washing of the workpiece with pure water, including ordinary water washing, ultrasonic water washing, and hot water washing.

[0003] The rinsing water after these washes is contaminated wastewater, containing pollutants such as organic and metals, as well as some silver plating solution. Direct discharge of this wastewater would cause environmental pollution and waste of silver plating solution. If the wastewater is treated before discharge, the treatment cost is high, and the problem of wasting water resources still exists. Therefore, further optimization is needed. Utility Model Content

[0004] The purpose of this invention is to provide a water treatment system for the edge of a silver plating production line to solve the problems mentioned in the background art, achieve effective purification and recycling of cleaning water, and reduce water and treatment costs.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A water treatment system for the edge of a silver plating production line includes a first raw water tank, a second raw water tank, a first RO membrane, a second RO membrane, an RO concentrate tank, a first washing tank, and a second washing tank.

[0007] The first raw water tank is connected to the first RO membrane via the first booster pump. The product water pipe of the first RO membrane is connected to the first water washing tank. The concentrate pipe of the first RO membrane is connected to the RO concentrate tank. The overflow pipe of the first water washing tank is connected to the first raw water tank.

[0008] The second raw water tank is connected to the second RO membrane via the second booster pump. The product water pipe of the second RO membrane is connected to the second washing tank. The overflow pipe of the second washing tank is connected to the second raw water tank. The concentrate pipe of the second RO membrane is connected to the first washing tank. The overflow pipe of the first washing tank is connected to the first raw water tank.

[0009] As an alternative, the first washing tank is provided with a first sub-tank, a second sub-tank and a third sub-tank. The first sub-tank is provided with an overflow port that is connected to the overflow pipe of the first washing tank. The permeate water treated by the first RO membrane flows to the third sub-tank, and the concentrate water treated by the second RO membrane flows to the second sub-tank.

[0010] As an alternative, the second raw water tank is connected to the third sub-tank via a third booster pump, and a filter is installed on the connecting pipeline between the third booster pump and the third sub-tank.

[0011] As an alternative, the second washing tank is provided with a fourth sub-tank and a fifth sub-tank. A portion of the permeate water treated by the second RO membrane flows to the fourth sub-tank, and another portion of the permeate water treated by the second RO membrane flows to the fifth sub-tank. The fourth and fifth sub-tanks are respectively provided with overflow ports that are connected to the overflow pipes of the second washing tank.

[0012] As an optional solution, the line-side water treatment system of the silver plating production line also includes a third water washing tank, the concentrate pipe of the second RO membrane is connected to the third water washing tank, and the overflow pipe of the third water washing tank is connected to the first raw water tank.

[0013] The third washing tank is equipped with a sixth sub-tank and a seventh sub-tank. Part of the concentrate after treatment by the second RO membrane flows to the sixth sub-tank, and the other part of the concentrate after treatment by the second RO membrane flows to the seventh sub-tank. The sixth and seventh sub-tanks are respectively equipped with overflow ports that are connected to the overflow pipes of the third washing tank.

[0014] As an alternative, the line-side water treatment system of the silver plating production line also includes a fourth water washing tank, where a portion of the concentrate after treatment by the first RO membrane flows to the RO concentrate tank, and another portion of the concentrate after treatment by the first RO membrane flows to the fourth water washing tank.

[0015] As an alternative, the ratio of permeate to concentrate after the first RO membrane treatment is 3:2.

[0016] As an alternative, the ratio of permeate to concentrate after treatment by the second RO membrane is 1:1.

[0017] As an alternative, a water supply pipe is installed in the second raw water tank, and the water supply pipe is connected to the secondary water source.

[0018] As an optional solution, a level control valve is installed on the inlet of the RO concentrate tank, and the outlet of the RO concentrate tank is connected to the stripping spray line through a fourth booster pump.

[0019] The beneficial effects of this utility model are:

[0020] The line edge water treatment system of this silver plating production line can achieve the goal of zero discharge by purifying and recycling the cleaning water of the production line, which greatly reduces the daily production and maintenance costs. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the edge water treatment system for the silver plating production line provided in this embodiment of the utility model.

[0022] In the attached image:

[0023] 1. First raw water tank; 2. Second raw water tank; 3. First RO membrane; 4. Second RO membrane; 5. RO concentrate tank; 6. First washing tank; 6a. First sub-tank; 6b. Second sub-tank; 6c. Third sub-tank; 7. Second washing tank; 7a. Fourth sub-tank; 7b. Fifth sub-tank; 8. First booster pump; 9. Second booster pump; 10. Third booster pump; 11. Filter; 12. Activated carbon filter assembly; 13. Third washing tank; 13a. Sixth sub-tank; 13b. Seventh sub-tank; 14. Fourth washing tank; 15. Water supply pipe; 16. Liquid level control valve; 17. Fourth booster pump. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0025] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0027] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to 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 limitations on this utility model.

[0028] Furthermore, the terms "first" and "second" are merely used to distinguish between different terms in description and do not have any special meaning.

[0029] Please see Figure 1 As shown, this embodiment provides a water treatment system for the edge of a silver plating production line, including a first raw water tank 1, a second raw water tank 2, a first RO membrane 3, a second RO membrane 4, an RO concentrate tank 5, a first water washing tank 6, and a second water washing tank 7.

[0030] The first raw water tank 1 is connected to the first RO membrane 3 via the first booster pump 8. The product water pipe of the first RO membrane 3 is connected to the first water washing tank 6. The concentrate pipe of the first RO membrane 3 is connected to the RO concentrate tank 5. The overflow pipe of the first water washing tank 6 is connected to the first raw water tank 1.

[0031] The second raw water tank 2 is connected to the second RO membrane 4 via the second booster pump 9. The product water pipe of the second RO membrane 4 is connected to the second water washing tank 7. The overflow pipe of the second water washing tank 7 is connected to the second raw water tank 2. The concentrate pipe of the second RO membrane 4 is connected to the first water washing tank 6. The overflow pipe of the first water washing tank 6 is connected to the first raw water tank 1.

[0032] RO (reverse osmosis) technology is a membrane separation and filtration technology that uses osmotic pressure difference as the driving force. The pore size of RO membrane is as small as nanometers. Under certain pressure, water molecules can pass through the RO membrane, while impurities such as inorganic salts, heavy metal ions, organic matter, colloids, bacteria, and viruses in the source water cannot pass through the RO membrane, thus strictly separating the pure water that can pass through and the concentrated water that cannot.

[0033] Therefore, the line edge water treatment system of the silver plating production line can realize the recycling of the cleaning water after purification, achieving the goal of zero discharge and greatly reducing daily production and maintenance costs.

[0034] Optionally, the first washing tank 6 is provided with a first sub-tank 6a, a second sub-tank 6b and a third sub-tank 6c. The first sub-tank 6a is provided with an overflow port that is connected to the overflow pipe of the first washing tank 6. The permeate water treated by the first RO membrane 3 flows to the third sub-tank 6c, and the concentrate water treated by the second RO membrane 4 flows to the second sub-tank 6b, thereby realizing the circulation and purification of the cleaning water in the first washing tank 6.

[0035] Optionally, the second raw water tank 2 is connected to the third sub-tank 6c via the third booster pump 10, and a filter 11 is installed on the connecting pipeline between the third booster pump 10 and the third sub-tank 6c. The filter 11 here is preferably a 0.1-micron filter element, which performs preliminary filtration of the raw water in the second raw water tank 2 before sending it into the third sub-tank 6c.

[0036] Similarly, an activated carbon filter assembly 12 is installed on the connecting pipe between the first raw water tank 1 and the first RO membrane 3 to perform preliminary filtration of the raw water in the first raw water tank 1.

[0037] Optionally, the second washing tank 7 is provided with a fourth sub-tank 7a and a fifth sub-tank 7b. A portion of the permeate water treated by the second RO membrane 4 flows to the fourth sub-tank 7a, and another portion of the permeate water treated by the second RO membrane 4 flows to the fifth sub-tank 7b. The fourth sub-tank 7a and the fifth sub-tank 7b are respectively provided with overflow ports that are connected to the overflow pipes of the second washing tank 7.

[0038] Furthermore, 40% of the permeate treated by the second RO membrane 4 enters the fourth sub-tank 7a and 60% enters the fifth sub-tank 7b, satisfying the cleanliness requirements of the cleaning water in each sub-tank of the second water washing tank 7, thereby realizing the circulation and purification of the cleaning water in the second water washing tank 7.

[0039] Optionally, the line edge water treatment system of the silver plating production line also includes a third water washing tank 13. The concentrate pipe of the second RO membrane 4 is connected to the third water washing tank 13, and the overflow pipe of the third water washing tank 13 is connected to the first raw water tank 1. The third water washing tank 13 is provided with a sixth sub-tank 13a and a seventh sub-tank 13b. A portion of the concentrate after treatment by the second RO membrane 4 flows to the sixth sub-tank 13a, and another portion of the concentrate after treatment by the second RO membrane 4 flows to the seventh sub-tank 13b. The sixth sub-tank 13a and the seventh sub-tank 13b are respectively provided with overflow ports that are connected to the overflow pipe of the third water washing tank 13.

[0040] Furthermore, 40% of the concentrated water treated by the second RO membrane 4 enters the sixth sub-tank 13a and 60% enters the seventh sub-tank 13b, which meets the cleanliness requirements of the cleaning water in each sub-tank of the third water washing tank 13, thereby realizing the circulation and purification of the cleaning water in the third water washing tank 13.

[0041] Optionally, the line edge water treatment system of the silver plating production line also includes a fourth water washing tank 14, where a portion of the concentrated water after treatment by the first RO membrane 3 flows to the RO concentrated water tank 5, and another portion of the concentrated water after treatment by the first RO membrane 3 flows to the fourth water washing tank 14.

[0042] Furthermore, 40% of the concentrate from the first RO membrane 3 enters the RO concentrate tank 5, and 60% enters the fourth water washing tank 14 for use in the fourth water washing tank 14.

[0043] Specifically, the ratio of permeate to concentrate after treatment by the first RO membrane 3 is 3:2. This ratio is determined by the quality of the raw water and the membrane permeation effect, and is not limited here.

[0044] Specifically, the ratio of permeate to concentrate after treatment by the second RO membrane 4 is 1:1. This ratio is determined by the quality of the raw water and the membrane permeation effect, and is not limited here.

[0045] Optionally, a water replenishment pipe 15 is introduced into the second raw water tank 2. The water replenishment pipe 15 is connected to a secondary water source to continuously replenish the water volume of the second raw water tank 2, thereby replenishing the water volume of the first raw water tank 1.

[0046] Optionally, a level control valve 16 is installed on the inlet of the RO concentrate tank 5 to prevent the RO concentrate tank 5 from overflowing; and the outlet of the RO concentrate tank 5 is connected to the stripping spray line through the fourth booster pump 17 to meet the water requirements of the stripping spray.

[0047] In summary, this silver plating production line edge water treatment system collects and purifies the cleaning water from the washing tanks of each process in the silver plating production line, and supplies the produced water and concentrated water of different concentrations to different washing tanks and stripping spray lines, realizing water recycling and zero wastewater discharge, greatly reducing the amount of pure water used, and lowering production costs and water waste.

[0048] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A water treatment system for the edge of a silver plating production line, characterized in that, It includes a first raw water tank (1), a second raw water tank (2), a first RO membrane (3), a second RO membrane (4), an RO concentrate tank (5), a first washing tank (6), and a second washing tank (7); The first raw water tank (1) is connected to the first RO membrane (3) via the first booster pump (8), the product water pipe of the first RO membrane (3) is connected to the first water washing tank (6), the concentrate pipe of the first RO membrane (3) is connected to the RO concentrate tank (5), and the overflow pipe of the first water washing tank (6) is connected to the first raw water tank (1). The second raw water tank (2) is connected to the second RO membrane (4) via the second booster pump (9). The product water pipe of the second RO membrane (4) is connected to the second water washing tank (7). The overflow pipe of the second water washing tank (7) is connected to the second raw water tank (2). The concentrate pipe of the second RO membrane (4) is connected to the first water washing tank (6). The overflow pipe of the first water washing tank (6) is connected to the first raw water tank (1).

2. The edge water treatment system for the silver plating production line according to claim 1, characterized in that, The first washing tank (6) is provided with a first sub-tank (6a), a second sub-tank (6b) and a third sub-tank (6c). The first sub-tank (6a) is provided with an overflow port that is connected to the overflow pipe of the first washing tank (6). The permeate after treatment by the first RO membrane (3) flows to the third sub-tank (6c), and the concentrate after treatment by the second RO membrane (4) flows to the second sub-tank (6b).

3. The edge water treatment system for the silver plating production line according to claim 2, characterized in that, The second raw water tank (2) is connected to the third sub-tank (6c) via a third booster pump (10), and a filter (11) is provided on the connecting pipeline between the third booster pump (10) and the third sub-tank (6c).

4. The edge water treatment system for the silver plating production line according to claim 1, characterized in that, The second washing tank (7) is provided with a fourth sub-tank (7a) and a fifth sub-tank (7b). A portion of the permeate water after treatment by the second RO membrane (4) flows to the fourth sub-tank (7a), and another portion of the permeate water after treatment by the second RO membrane (4) flows to the fifth sub-tank (7b). The fourth sub-tank (7a) and the fifth sub-tank (7b) are respectively provided with overflow ports that are connected to the overflow pipe of the second washing tank (7).

5. The edge water treatment system for a silver plating production line according to claim 1, characterized in that, It also includes a third water washing tank (13), the concentrate pipe of the second RO membrane (4) is connected to the third water washing tank (13), and the overflow pipe of the third water washing tank (13) is connected to the first raw water tank (1); The third washing tank (13) is provided with a sixth sub-tank (13a) and a seventh sub-tank (13b). A portion of the concentrated water after treatment by the second RO membrane (4) flows to the sixth sub-tank (13a), and another portion of the concentrated water after treatment by the second RO membrane (4) flows to the seventh sub-tank (13b). The sixth sub-tank (13a) and the seventh sub-tank (13b) are respectively provided with overflow ports that are connected to the overflow pipe of the third washing tank (13).

6. The edge water treatment system for a silver plating production line according to claim 1, characterized in that, It also includes a fourth water washing tank (14), a portion of the concentrate after treatment by the first RO membrane (3) flows to the RO concentrate tank (5), and another portion of the concentrate after treatment by the first RO membrane (3) flows to the fourth water washing tank (14).

7. The edge water treatment system for a silver plating production line according to claim 1, characterized in that, The ratio of permeate to concentrate after treatment by the first RO membrane (3) is 3:

2.

8. The edge water treatment system for a silver plating production line according to claim 1, characterized in that, The ratio of permeate to concentrate after treatment by the second RO membrane (4) is 1:

1.

9. The edge water treatment system for a silver plating production line according to claim 1, characterized in that, A water supply pipe (15) is introduced into the second raw water tank (2), and the water supply pipe (15) is connected to the secondary water source.

10. The edge water treatment system for a silver plating production line according to claim 1, characterized in that, The RO concentrate tank (5) is equipped with a level control valve (16) at its inlet, and the outlet of the RO concentrate tank (5) is connected to the stripping spray line via a fourth booster pump (17).

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