Pure water supply system for electroplating processing
By introducing a concentrated water recovery module into the pure water supply system of electroplating processing, and using a quartz sand filter and an RO reverse osmosis filter to filter and purify the concentrated water, the problem of water waste caused by excess concentrated water and the increased load on the sewage treatment system are solved, and water resources are recycled and reused.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-21
- Publication Date
- 2026-03-31
AI Technical Summary
In traditional electroplating processes, the excess concentrated water cannot be consumed simultaneously, leading to water waste and increased load on the wastewater treatment system.
A concentrate recovery module is introduced, which filters and purifies the concentrate through a quartz sand filter and an RO reverse osmosis filter, and then recovers it into the tap water tank for use as raw water, reducing the discharge of concentrate.
It alleviated the problem of excess concentrated wastewater, reduced water waste, and lowered the load on the sewage treatment system.
Smart Images
Figure CN224062598U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to electroplating technical field especially relates to a kind of water supply system of electroplating processing pure. BACKGROUND
[0002] In electroplating industry, the solvent used in cleaning and electroplating bath of electroplating needs to use pure water (electrical conductivity range is 0.5 μs / cm~10 μs / cm). Currently, the pure water supply mode of electroplating manufacturer is to introduce tap water (electrical conductivity is usually 200 μs / cm) from municipal water supply network, and convert tap water into pure water using pure water module (for example, EDI pure water machine).
[0003] The pure water supply system of traditional electroplating processing has the following disadvantages: pure water module will also produce concentrated water (electrical conductivity>400 μs / cm, also known as hard water) while producing pure water, and the volume ratio of produced pure water to concentrated water is about 7:3. Since the electrical conductivity of concentrated water cannot meet the requirements of cleaning and solvent of electroplating bath, it is usually used in pre-electroplating process (cleaning and degreasing of raw materials, etc.). In actual operation, the consumption rate of concentrated water in pre-electroplating process is much lower than the production rate of concentrated water in pure water machine. Therefore, it is impossible to consume all concentrated water simultaneously by relying on pre-electroplating process, which leads to the problem of concentrated water surplus. These surplus concentrated water can only be regarded as waste water and discharged to sewage recovery treatment station, which not only causes waste of water resources, but also increases the load of sewage treatment system. UTILITY MODEL CONTENT
[0004] Therefore, the utility model provides a kind of pure water supply system of electroplating processing, introduces concentrated water recovery module, filters and purifies concentrated water discharged by pure water module to recover part of water resources to tap water tank as raw water, alleviates the problem of concentrated water surplus and waste water discharge, reduces waste of water resources and reduces the load of sewage treatment system.
[0005] A kind of pure water supply system of electroplating processing, comprising:
[0006] tap water tank; the water inlet of tap water tank is connected to tap water network;
[0007] pure water module connected to tap water tank; the raw water inlet of pure water module is connected to the water outlet of tap water tank;
[0008] pure water tank connected to pure water module; the water inlet of pure water tank is connected to the pure water outlet of pure water module;
[0009] The concentrated water recovery module connected with the pure water module; the concentrated water recovery module comprises: a first quartz sand filter and a first RO reverse osmosis filter connected in sequence; the water inlet of the first quartz sand filter is connected with the concentrated water outlet of the pure water module, and the water outlet of the first quartz sand filter is connected with the raw water inlet of the first RO reverse osmosis filter; the pure water outlet of the first RO reverse osmosis filter is connected with the first backwater inlet of the tap water tank; the concentrated water output by the pure water module is recovered to obtain recovered pure water and recovered concentrated water after passing through the first quartz sand filter and the first RO reverse osmosis filter in sequence, and the recovered pure water is returned to the tap water tank; wherein the conductivity of the recovered pure water is less than or equal to 200 μs / cm; and
[0010] The concentrated water tank connected with the concentrated water recovery module; the water inlet of the concentrated water tank is connected with the concentrated water outlet of the first RO reverse osmosis filter.
[0011] The above-mentioned pure water supply system for electroplating processing, the tap water tank receives tap water from the municipal water network and plays a role of storage and buffering. The pure water module obtains raw water from the tap water tank and carries out filtration and purification to obtain pure water and concentrated water. The pure water output by the pure water module is transported to the pure water tank for storage and buffering, and the concentrated water output by the pure water module is transported to the concentrated water recovery module, and then passes through the first quartz sand filter and the second RO reverse osmosis filter in sequence to carry out filtration and purification on the concentrated water, and then obtains recovered pure water and recovered concentrated water. The conductivity of the recovered pure water is less than or equal to 200 μs / cm, so the recovered pure water can be returned to the tap water tank as raw water, and the recovered concentrated water is transported to the concentrated water tank for recovery. Through the above design, the concentrated water recovery module is introduced to filter and purify the concentrated water discharged from the pure water module to recover part of the water resources to the tap water tank as raw water, thereby alleviating the problem of concentrated water surplus being regarded as waste water discharge, reducing water resource waste, and reducing the load of the sewage treatment system.
[0012] In one of the embodiments, the pure water module comprises: a second quartz sand filter, an activated carbon filter, a second RO reverse osmosis filter, a third RO reverse osmosis filter and an EDI pure water machine connected in sequence; the water inlet of the second quartz sand filter is connected to the water outlet of the tap water tank, the water outlet of the second quartz sand filter is connected to the water inlet of the activated carbon filter; the water outlet of the activated carbon filter is connected to the raw water inlet of the second RO reverse osmosis filter; the pure water outlet of the second RO reverse osmosis filter is connected to the raw water inlet of the third RO reverse osmosis filter, the concentrated water outlet of the second RO reverse osmosis filter is connected to the water inlet of the first quartz sand filter; the pure water outlet of the third RO reverse osmosis filter is connected to the raw water inlet of the EDI pure water machine, the concentrated water outlet of the third RO reverse osmosis filter is connected to the second backwater outlet of the tap water tank; the pure water outlet of the EDI pure water machine is connected to the water inlet of the pure water tank, and the concentrated water outlet of the EDI pure water machine is connected to the third backwater outlet of the tap water tank. The raw water output by the tap water tank passes through the second quartz sand filter to remove rust, silt, algae and other impurities and colloids, then passes through the activated carbon to remove chlorine ions, organic matter and microorganisms, and then passes through the second RO reverse osmosis filter to obtain first-level pure water and first-level concentrated water. The first-level pure water passes through the third RO reverse osmosis filter to obtain second-level pure water and second-level concentrated water. The second-level pure water passes through the EDI pure water machine to obtain third-level pure water meeting the requirements of electroplating. Among them, the cleanliness of the first-level concentrated water is the worst, so it is transported to the concentrated water recovery module for treatment. The second-level concentrated water is obtained by filtering the first-level pure water through the third RO reverse osmosis filter, so it can be backflowed to the tap water tank as raw water, reducing the load of the concentrated water recovery system. The third-level concentrated water is obtained by filtering the second-level pure water through the EDI pure water machine, so it can be backflowed to the tap water tank as raw water, reducing the load of the concentrated water recovery system.
[0013] In one of the embodiments, the concentrated water recovery module further comprises: a first security filter connected between the first quartz sand filter and the first RO reverse osmosis filter; the water inlet of the first security filter is connected to the water outlet of the first quartz sand filter, and the water outlet of the first security filter is connected to the raw water inlet of the first RO reverse osmosis filter. The first security filter can filter ≥5μm particles, avoiding that larger particles in the water scratch the RO membrane in the first RO reverse osmosis filter with water flow, which is conducive to prolonging the service life of the first RO reverse osmosis filter.
[0014] In one of the embodiments, the pure water module further comprises: a second security filter connected between the activated carbon filter and the second RO reverse osmosis filter; the water inlet of the second security filter is connected to the water outlet of the activated carbon filter, and the water outlet of the second security filter is connected to the raw water inlet of the second RO reverse osmosis filter. The second security filter can filter ≥5μm particles, avoiding that larger particles in the water scratch the RO membrane in the second RO reverse osmosis filter with water flow, which is conducive to prolonging the service life of the second RO reverse osmosis filter.
[0015] In one of the embodiments, the pure water module further comprises a second booster pump connected between the activated carbon filter and the second RO filter; the water inlet of the second booster pump is connected to the water outlet of the activated carbon filter, and the water outlet of the second booster pump is connected to the raw water inlet of the second RO filter. The second booster pump is used to provide the raw water pressure and flow required by the second RO filter for reverse osmosis, so as to ensure the effective operation of the second RO filter.
[0016] In one of the embodiments, the concentrated water recovery module further comprises a first booster pump connected between the first quartz sand filter and the first RO filter; the water inlet of the first booster pump is connected to the water outlet of the first quartz sand filter, and the water outlet of the first booster pump is connected to the raw water inlet of the first RO filter. The first booster pump is used to provide the raw water pressure and flow required by the first RO filter for reverse osmosis, so as to ensure the effective operation of the first RO filter.
[0017] In one of the embodiments, the pure water supply system for electroplating process further comprises a raw water pump connected between the tap water tank and the pure water module; the water inlet of the raw water pump is connected to the water outlet of the tap water tank, and the water outlet of the raw water pump is connected to the raw water inlet of the pure water module. The raw water pump is used to drive the water in the tap water tank to enter the pure water module.
[0018] In one of the embodiments, the tap water tank, the pure water tank, and the concentrated water tank are all provided with water level controllers. The water level controllers are used to realize automatic control of water level, automatic water replenishment, and automatic water stop under unattended condition. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 A schematic diagram of the pure water supply system for electroplating process according to one of the embodiments of the present application. DETAILED DESCRIPTION
[0020] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be implemented in many different ways other than those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited to the specific embodiments disclosed below.
[0021] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.
[0022] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise specifically limited.
[0023] In the utility model, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, it can be the communication or interaction relationship between two elements, unless otherwise specifically limited. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0024] In the utility model, unless otherwise specifically defined and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.
[0025] It is to be understood that when an element such as a layer, region or substrate is referred to as being "on" or "connected to" another element, it can be directly on or connected to the other element or intervening elements can be present. In contrast, when an element is referred to as being "directly on" or "directly connected to" another element, there are no intervening elements present. It will be understood that, although the terms "first", "second", etc. can be used herein to describe various elements, these elements should not be limited by these terms since such elements are commonly known with other elements irrespective of their
[0026] As shown in Figure 1 , it is a water supply system for electroplating processing of an embodiment of the utility model.
[0027] As shown in Figure 1 , the water supply system for electroplating processing includes: a tap water tank, a pure water module connected with the tap water tank, a pure water tank connected with the pure water module, a concentrated water recovery module connected with the pure water module, and a concentrated water tank connected with the concentrated water recovery module. Wherein, the tap water tank is used for storing raw water, and the pure water module is used for filtering and purifying the raw water in the tap water tank to obtain pure water and concentrated water. Wherein, the pure water is stored through the pure water tank. The concentrated water is recovered and filtered through the concentrated water recovery module, so as to extract the recovered pure water meeting the requirements of raw water and return to the tap water tank for use. And the recovered concentrated water obtained by the concentrated water recovery module is stored through the concentrated water tank.
[0028] In the following, the water supply system for electroplating processing is further described. Figure 1 .
[0029] As shown in Figure 1 , in the embodiment, the tap water tank is provided with a water inlet, a water outlet, a first backwater inlet, a second backwater inlet and a third backwater inlet. Wherein, the water inlet of the tap water tank is connected with the tap water network, the water outlet of the tap water tank is connected with the pure water module, the first backwater inlet of the tap water tank is connected with the concentrated water recovery module, and the second backwater inlet and the third backwater inlet of the tap water tank are both used for connecting the pure water module.
[0030] As shown in Figure 1 , in the embodiment, the water supply system for electroplating processing further includes: a raw water pump connected between the tap water tank and the pure water module. The water inlet of the raw water pump is connected with the water outlet of the tap water tank, and the water outlet of the raw water pump is connected with the raw water inlet of the pure water module. The raw water pump is used to drive the water in the tap water tank into the pure water module.
[0031] As shown in Figure 1 , in the embodiment, the pure water module is provided with a raw water inlet, a pure water outlet, a first concentrated water outlet, a second concentrated water outlet and a first three-stage concentrated water outlet. Wherein, the raw water inlet of the pure water module is connected with the water outlet of the tap water tank, and the pure water outlet of the pure water module is connected with the water inlet of the pure water tank.
[0032] As Figure 1 shown, the concentrated water recovery module includes: a first quartz sand filter and a first RO reverse osmosis filter connected in sequence. The water inlet of the first quartz sand filter is connected to the concentrated water outlet of the pure water module, and the water outlet of the first quartz sand filter is connected to the raw water inlet of the first RO reverse osmosis filter. The pure water outlet of the first RO reverse osmosis filter is connected to the first backwater inlet of the tap water tank. The concentrated water output by the pure water module is sequentially passed through the first quartz sand filter and the first RO reverse osmosis filter to obtain recovered pure water and recovered concentrated water, and the recovered pure water is returned to the tap water tank. Among them, the conductivity of the recovered pure water is ≤200 μs / cm (if the conductivity of the recovered pure water is >200 μs / cm, the raw water in the tap water tank will be contaminated, which will increase the load of the pure water module. On the contrary, in this embodiment, the conductivity of the recovered pure water is ≤200 μs / cm, which can not increase or even reduce the load of the pure water module). The water inlet of the concentrated water tank is connected to the concentrated water outlet of the first RO reverse osmosis filter.
[0033] As Figure 1 shown, in this embodiment, the concentrated water recovery module can also include: a first security filter connected between the first quartz sand filter and the first RO reverse osmosis filter. The water inlet of the first security filter is connected to the water outlet of the first quartz sand filter, and the water outlet of the first security filter is connected to the raw water inlet of the first RO reverse osmosis filter. The security filter is also called a precision filter. The first security filter can filter ≥5 μm particles to prevent larger particles in the water from scratching the RO membrane in the first RO reverse osmosis filter with the water flow, which is beneficial to prolong the service life of the first RO reverse osmosis filter.
[0034] As Figure 1 shown, in this embodiment, the concentrated water recovery module can also include: a first booster pump connected between the first quartz sand filter and the first RO reverse osmosis filter. The water inlet of the first booster pump is connected to the water outlet of the first quartz sand filter, and the water outlet of the first booster pump is connected to the raw water inlet of the first RO reverse osmosis filter. The first booster pump is used to provide the water inlet pressure and flow required for reverse osmosis for the first RO reverse osmosis filter, to ensure the effective operation of the first RO reverse osmosis filter.
[0035] Working principle:
[0036] As Figure 1As shown, the tap water tank receives tap water from the municipal water network and serves as a storage and buffer. The pure water module obtains raw water from the tap water tank and filters and purifies it to obtain pure water and concentrated water. The pure water output from the pure water module is sent to the pure water tank for storage and buffering, while the concentrated water output from the pure water module is sent to the concentrated water recovery module. After passing through a first quartz sand filter and a second RO reverse osmosis filter, the concentrated water is filtered and purified to obtain recycled pure water and recycled concentrated water. The conductivity of the recycled pure water is ≤200μs / cm. Therefore, the recycled pure water can be returned to the tap water tank for use as raw water, while the recycled concentrated water is sent to the concentrated water tank for recycling.
[0037] For example, such as Figure 1 As shown, in this embodiment, the pure water module includes: a second quartz sand filter, an activated carbon filter, a second RO reverse osmosis filter, a third RO reverse osmosis filter, and an EDI pure water machine connected in sequence.
[0038] The second quartz sand filter's inlet is connected to the outlet of the tap water tank, and its outlet is connected to the inlet of the activated carbon filter. The activated carbon filter's outlet is connected to the raw water inlet of the second RO reverse osmosis filter. The pure water outlet of the second RO reverse osmosis filter is connected to the raw water inlet of the third RO reverse osmosis filter, and its concentrated water outlet is connected to the inlet of the first quartz sand filter. The pure water outlet of the third RO reverse osmosis filter is connected to the raw water inlet of the EDI water purifier, and its concentrated water outlet is connected to the second return water outlet of the tap water tank. The pure water outlet of the EDI water purifier is connected to the inlet of the pure water tank, and its concentrated water outlet is connected to the third return water outlet of the tap water tank.
[0039] like Figure 1 As shown, the raw water output from the tap water tank passes through a second quartz sand filter to remove impurities such as rust, silt, algae, and colloids. Then, it passes through activated carbon to remove chloride ions, organic matter, and microorganisms. Next, it passes through a second RO reverse osmosis filter to obtain primary pure water and primary concentrated water. The primary pure water then passes through a third RO reverse osmosis filter to obtain secondary pure water and secondary concentrated water. The secondary pure water then passes through an EDI pure water machine to obtain tertiary pure water that meets the requirements for electroplating. The primary concentrated water has the lowest purity, so it is sent to the concentrated water recovery module for treatment. The secondary concentrated water, obtained by filtering the primary pure water through the third RO reverse osmosis filter, can be returned to the water tank as raw water, reducing the load on the concentrated water recovery system. The tertiary concentrated water, obtained by filtering the secondary pure water through the EDI pure water machine, can also be returned to the water tank as raw water, reducing the load on the concentrated water recovery system.
[0040] Further, in the embodiment, the pure water module can further comprise a second security filter connected between the activated carbon filter and the second RO filter.
[0041] In addition, as shown in the embodiment, the pure water module can further comprise a second booster pump connected between the activated carbon filter and the second RO filter. Figure 1 In addition, as shown in the embodiment, the pure water module can further comprise a second booster pump connected between the activated carbon filter and the second RO filter.
[0042] In order to improve the stability of the equipment operation and meet the conditions of unattended operation, in the embodiment, the tap water tank, the pure water tank and the concentrated water tank can be provided with a water level controller.
[0043] The above-mentioned pure water supply system for electroplating processing introduces a concentrated water recovery module to filter and purify the concentrated water discharged from the pure water module to recover part of the water resources to the tap water tank as raw water, thereby alleviating the problem of concentrated water surplus being regarded as waste water discharge, reducing water resource waste and reducing the load of the sewage treatment system.
[0044] The technical features of the above embodiments can be combined in any manner. In order to make the description concise, all possible combinations of the technical features in the above embodiments are not described, but as long as the combinations of the technical features do not exist, they should be considered as the scope of the present application.
[0045] The above embodiments only express the preferred embodiments of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent. It should be noted that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.
Claims
1. A pure water supply system for an electroplating process, characterized by, The application relates to a water purification system. The water purification system comprises: a tap water tank, a water inlet of the tap water tank being connected to a tap water network; a pure water module connected to the tap water tank; a raw water inlet of the pure water module being connected to a water outlet of the tap water tank; a pure water tank connected to the pure water module; a water inlet of the pure water tank being connected to a pure water outlet of the pure water module; a concentrated water recovery module connected to the pure water module; the concentrated water recovery module comprises a first quartz sand filter and a first RO reverse osmosis filter connected in sequence, a water inlet of the first quartz sand filter being connected to a concentrated water outlet of the pure water module, a water outlet of the first quartz sand filter being connected to a raw water inlet of the first RO reverse osmosis filter, a pure water outlet of the first RO reverse osmosis filter being connected to a first backwater inlet of the tap water tank, concentrated water output by the pure water module being recovered into recovered pure water and recovered concentrated water after passing through the first quartz sand filter and the first RO reverse osmosis filter in sequence, the recovered pure water being returned to the tap water tank, and the recovered pure water having an electric conductivity of less than or equal to 200 mu S / cm; and 2. The electroplating process pure water supply system according to claim 1, wherein a concentrated water tank connected to the concentrated water recovery module, a water inlet of the concentrated water tank being connected to a concentrated water outlet of the first RO reverse osmosis filter.
3. The electroplating process pure water supply system according to claim 2, wherein The pure water module comprises a second quartz sand filter, an activated carbon filter, a second RO reverse osmosis filter, a third RO reverse osmosis filter and an EDI pure water machine connected in sequence, a water inlet of the second quartz sand filter being connected to a water outlet of the tap water tank, a water outlet of the second quartz sand filter being connected to a water inlet of the activated carbon filter, a water outlet of the activated carbon filter being connected to a raw water inlet of the second RO reverse osmosis filter, a pure water outlet of the second RO reverse osmosis filter being connected to a raw water inlet of the third RO reverse osmosis filter, a concentrated water outlet of the second RO reverse osmosis filter being connected to a water inlet of the first quartz sand filter, a pure water outlet of the third RO reverse osmosis filter being connected to a raw water inlet of the EDI pure water machine, a concentrated water outlet of the third RO reverse osmosis filter being connected to a second backwater inlet of the tap water tank, and a pure water outlet of the EDI pure water machine being connected to a water inlet of the pure water tank.
4. The electroplating process pure water supply system according to claim 2, wherein The concentrated water recovery module further comprises a first security filter connected between the first quartz sand filter and the first RO reverse osmosis filter, a water inlet of the first security filter being connected to a water outlet of the first quartz sand filter, and a water outlet of the first security filter being connected to a raw water inlet of the first RO reverse osmosis filter. The pure water module further comprises a second security filter connected between the activated carbon filter and the second RO reverse osmosis filter, a water inlet of the second security filter being connected to a water outlet of the activated carbon filter, and a water outlet of the second security filter being connected to a raw water inlet of the second RO reverse osmosis filter.
5. The electroplating process pure water supply system according to claim 2, wherein The pure water module further comprises a second booster pump connected between the activated carbon filter and the second RO filter; the water inlet of the second booster pump is connected to the water outlet of the activated carbon filter, and the water outlet of the second booster pump is connected to the raw water inlet of the second RO filter.
6. The electroplating process pure water supply system according to claim 1, wherein The concentrated water recovery module further comprises a first booster pump connected between the first quartz sand filter and the first RO filter; the water inlet of the first booster pump is connected to the water outlet of the first quartz sand filter, and the water outlet of the first booster pump is connected to the raw water inlet of the first RO filter.
7. The electroplating process pure water supply system according to claim 1, wherein Further comprising: a raw water pump connected between the tap water tank and the pure water module; the water inlet of the raw water pump is connected to the water outlet of the tap water tank, and the water outlet of the raw water pump is connected to the raw water inlet of the pure water module.
8. The electroplating process pure water supply system according to claim 1, wherein The tap water tank, the pure water tank, and the concentrated water tank are each provided with a water level controller.