Electroplating anti-oxidation waste liquid treatment equipment

Abstract

The utility model provides electroplating anti-oxidation waste liquid treatment equipment which comprises a water suction pump, one end of the water suction pump is used for being connected with an anti-oxidation tank of an electroplating production line, and the other end of the water suction pump is connected with a treatment tank, so that waste liquid containing hexavalent chromium generated by the anti-oxidation tank is conveyed to one end of the treatment tank; the other end of the treatment tank is communicated with one end of the heating decomposition tank, and the treatment tank is used for accommodating liquid medicine for converting hexavalent chromium ions; the other end of the heating and decomposing tank is connected with the input end of the metering pump and is used for heating and decomposing the waste liquid; the filter material is arranged between the heating decomposition tank and the metering pump and is used for filtering waste liquid; the output end of the metering pump is connected to an electroplating bath of the electroplating production line, and the metering pump is used for quantitatively conveying the filtered waste liquid back to the electroplating bath. According to the utility model, low emission and low pollution and even zero emission and zero pollution in the electroplating process are realized.

Description

Technical Field

[0001] This utility model relates to the field of waste liquid treatment technology, and more specifically, to an electroplating anti-oxidation waste liquid treatment device. Background Technology

[0002] Chemical copper plating is a process that involves plating copper onto a substrate using chemical methods. The process involves the following steps: substrate preparation, surface treatment, electroplating, water washing, anti-oxidation treatment, and baking. Compared to physical vacuum copper plating, chemical copper plating has the advantage of lower production costs. However, the wastewater it generates may cause environmental harm or increase waste disposal costs. Particularly in the anti-oxidation treatment process on copper surfaces, the most widely used and effective antioxidants in the industry typically contain hexavalent chromium. However, hexavalent chromium is easily absorbed by the human body and can enter the body through digestion, respiratory tract, skin, and mucous membranes. When it enters through the digestive tract, it can cause vomiting and abdominal pain; when it enters through the skin, it can cause dermatitis and eczema. The greatest danger is the carcinogenic risk associated with contact or inhalation. Therefore, when using materials containing hexavalent chromium, in addition to ensuring that the product complies with environmental regulations, waste disposal also needs strict control to avoid environmental harm.

[0003] Currently, the treatment process requires a complicated waste liquid treatment procedure. In addition to increasing costs, the waste liquid after treatment still poses a risk of secondary environmental pollution. Utility Model Content

[0004] This utility model discloses a composite copper foil with low reflectivity, a transparent conductive film, and a 5G transparent antenna to improve the above-mentioned problems.

[0005] The present invention adopts the following solution:

[0006] An electroplating anti-oxidation waste liquid treatment device, comprising:

[0007] A water pump, one end of which is connected to the anti-oxidation tank of the electroplating production line, and the other end of which is connected to the treatment tank, to transport the waste liquid containing hexavalent chromium generated by the anti-oxidation tank to one end of the treatment tank.

[0008] The other end of the processing tank is connected to one end of the heating decomposition tank, and is used to contain the solution for converting hexavalent chromium ions;

[0009] The heating decomposition tank is connected at one end to the input end of a metering pump, and is used to heat and decompose waste liquid.

[0010] Filter media is disposed between the heating decomposition tank and the metering pump for filtering waste liquid;

[0011] The metering pump is connected to the electroplating tank of the electroplating production line at its output end, and is used to quantitatively transport the filtered waste liquid back to the electroplating tank.

[0012] Preferably, the treatment tank includes at least one stirring device for stirring waste liquid and at least one dosing device for quantitative dosing, wherein the stirring device and the dosing device are disposed in the treatment tank.

[0013] Preferably, the solution is used to convert hexavalent chromium ions in the waste liquid into trivalent chromium ions.

[0014] Preferably, the solution is one or more of the following: hydrazine sulfate (N2H6SO4), hydrazine (N2H4), hydroxylamine (NH2OH), sodium bisulfite (NaHSO3), and sodium metabisulfite (Na2S2O5).

[0015] Preferably, the filter material is one or more of activated carbon, filter membrane, and fiber filter media.

[0016] Preferably, the metering pump is configured to deliver a flow rate that is adjustable within the range of 0 to 10 L / min.

[0017] Preferably, it further includes a storage tank disposed between the heating decomposition tank and the metering pump.

[0018] In summary, this embodiment connects the two ends of the electroplating anti-oxidation waste liquid treatment equipment directly to the anti-oxidation tank and the electroplating tank of the electroplating production line. This allows the waste liquid generated in the anti-oxidation tank to be converted into a harmless or extremely low-hazard liquid after a series of treatments before being returned to the electroplating tank for recycling. This achieves low emissions and low pollution, or even zero emissions and zero pollution, in the electroplating process. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram showing the connection of the electroplating anti-oxidation waste liquid treatment equipment provided in this embodiment of the utility model on the electroplating production line. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0022] like Figure 1 As shown, this utility model embodiment provides an electroplating anti-oxidation waste liquid treatment device 100. The input end and output end of the electroplating anti-oxidation waste liquid treatment device 100 are respectively connected to the anti-oxidation tank 210 and the electroplating tank 220 of the electroplating production line. The treatment method is to return the failed waste liquid in the anti-oxidation tank 210 to the electroplating tank 220 for electroplating in a zero-discharge manner, thereby achieving low emission and low pollution, or even zero emission and zero pollution, in the electroplating process.

[0023] Specifically, the electroplating anti-oxidation waste liquid treatment equipment 100 includes:

[0024] A water pump 10 is connected at one end to an anti-oxidation tank 210 of an electroplating production line and at the other end to a treatment tank 20, so as to transport the waste liquid containing hexavalent chromium generated by the anti-oxidation tank 210 to one end of the treatment tank 20.

[0025] In this embodiment, as described above, in the anti-oxidation treatment process on the copper surface (performed in the anti-oxidation tank 210), the most commonly used and most effective antioxidant typically contains hexavalent chromium ions. However, hexavalent chromium ions are easily absorbed by the human body and can be harmful. Therefore, this embodiment requires treatment of the waste liquid generated in the anti-oxidation tank 210. To this end, the waste liquid generated in the anti-oxidation tank 210 is first transported to the treatment tank 20 via the water pump 10 for further treatment.

[0026] The other end of the processing tank 20 is connected to one end of the heating decomposition tank 30, and is used to contain the drug solution for converting hexavalent chromium ions.

[0027] In this embodiment, the treatment tank 20 contains a chemical solution for converting hexavalent chromium ions. This chemical solution is used to convert hexavalent chromium ions in the waste liquid into other ions that are harmless or have very low harm to the human body. For example, it can convert hexavalent chromium ions in the waste liquid into trivalent chromium ions that have very low harm to the human body.

[0028] In this embodiment, the drug solution is one or more of the following: hydrazine sulfate (N2H6SO4), hydrazine (N2H4), hydroxylamine (NH2OH), sodium bisulfite (NaHSO3), and sodium metabisulfite (Na2S2O5). This invention does not impose any specific limitations.

[0029] In this embodiment, the treatment tank 20 further includes at least one stirring device for stirring waste liquid and at least one dosing device for quantitative dosing, wherein the stirring device and the dosing device are disposed in the treatment tank 20.

[0030] The stirring device is used to stir the waste liquid, allowing it to react more fully with the drug solution, while the dosing device can replenish the drug or drug solution, so that the reaction can continue.

[0031] The heating decomposition tank 30 is connected at one end to the input end of the metering pump 50, and is used to heat and decompose the waste liquid.

[0032] In this embodiment, the waste liquid treated by the treatment tank 20 is further transferred to the heating decomposition tank 30, which heats the waste liquid to decompose some of the pollutants.

[0033] The heating decomposition tank 30 can be heated by a heating device installed at its bottom or around its perimeter. This is a conventional technology and is not specifically limited by this invention.

[0034] Filter media 40 is disposed between the heating decomposition tank 30 and the metering pump 50 for filtering waste liquid.

[0035] In this embodiment, the filter material 40 may be one or more of activated carbon, a filter membrane, and fiber filter media. The filter material 40 can adsorb and filter some pollutants or impurities in the waste liquid, thereby purifying the waste liquid.

[0036] The metering pump 50 is connected to the electroplating tank 220 of the electroplating production line at its output end, and is used to meterly transport the filtered waste liquid back to the electroplating tank 220.

[0037] In this embodiment, the waste liquid treated by the treatment tank 20, the heating decomposition tank 30, and the filter material 40 has been converted into a relatively clean liquid, but it still contains trivalent chromium ions. At this time, the metering pump 50 delivers these liquids to the electroplating tank 220 for electroplating according to the needs of electroplating, thereby realizing the recovery of these liquids.

[0038] It should be noted that since the liquid still contains some trivalent chromium ions, these trivalent chromium ions will also be electroplated onto the workpiece. However, since trivalent chromium ions themselves have extremely low harm to the human body, they do not affect the safety of the workpiece in use.

[0039] It should be noted that the metering pump 50 is configured to deliver a flow rate that is adjustable within the range of 0 to 10 L / min.

[0040] It should be noted that the system also includes a storage tank 60 disposed between the heating decomposition tank 30 and the metering pump 50.

[0041] Since the metering pump 50 delivers liquid in a metered manner according to the needs of electroplating, there may be a situation where the input liquid is greater than the output liquid. In this case, the excess liquid can be temporarily buffered in the storage tank 60 to avoid the accumulation of liquid in the pipeline.

[0042] It should be noted that the various pumps, tanks and devices mentioned above can be connected by pipes, water pipes, etc., which are common knowledge and will not be elaborated here.

[0043] In summary, this embodiment connects the two ends of the electroplating anti-oxidation waste liquid treatment equipment 100 directly to the anti-oxidation tank 210 and the electroplating tank 220 that connect the electroplating production line. This allows the waste liquid generated in the anti-oxidation tank 210 to be converted into a harmless or extremely low-hazard liquid after a series of treatments before being returned to the electroplating tank 220 for recycling. This achieves low emissions and low pollution, or even zero emissions and zero pollution, in the electroplating process.

[0044] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions that fall within the scope of this utility model's concept are protected by this utility model.

Claims

1. An electroplating anti-oxidation waste liquid treatment device, characterized in that, The application relates to a device for recycling waste liquid containing hexavalent chromium ions in an electroplating production line. The device comprises: a water suction pump, one end of which is connected to an oxidation-resistant tank of the electroplating production line, and the other end is connected to a treatment tank, so as to transport the waste liquid containing hexavalent chromium ions generated by the oxidation-resistant tank to one end of the treatment tank; the treatment tank, the other end of which is communicated with one end of a heating decomposition tank, and is used for containing a medicine liquid for converting hexavalent chromium ions; the heating decomposition tank, the other end of which is connected to an input end of a quantitative pump, and is used for heating and decomposing the waste liquid; a filter material, which is arranged between the heating decomposition tank and the quantitative pump, and is used for filtering the waste liquid; 2. The electroplating anti-oxidation waste liquid treatment equipment according to claim 1, characterized in that, the quantitative pump, an output end of which is connected to an electroplating tank of the electroplating production line, and is used for quantitatively transporting the filtered waste liquid back to the electroplating tank.

3. The electroplating anti-oxidation waste liquid treatment equipment according to claim 1, characterized in that, The treatment tank comprises at least one stirring device for stirring the waste liquid and at least one medicine adding device for quantitatively adding the medicine.

4. The electroplating anti-oxidation waste liquid treatment equipment according to claim 3, characterized in that, The medicine liquid is used for converting hexavalent chromium ions in the waste liquid into trivalent chromium ions.

5. The electroplating anti-oxidation waste liquid treatment equipment according to claim 1, characterized in that, The medicine liquid is one of sulfanilamide N2H6SO4, hydrazine N2H4, hydroxylamine NH2OH, sodium bisulfite NaHSO3 and sodium pyrosulfite Na2S2O5.

6. The electroplating anti-oxidation waste liquid treatment equipment according to claim 1, characterized in that, The filter material is one or more of activated carbon, a filter membrane and fiber filter material.

7. The electroplating anti-oxidation waste liquid treatment equipment according to claim 1, characterized in that, The quantitative pump is arranged to be adjustable in a range of 0-10 L / min. The device further comprises a liquid storage tank arranged between the heating decomposition tank and the quantitative pump.

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