CN212356862U - Copper-containing wastewater treatment system - Google Patents
Copper-containing wastewater treatment system Download PDFInfo
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- CN212356862U CN212356862U CN202020770323.XU CN202020770323U CN212356862U CN 212356862 U CN212356862 U CN 212356862U CN 202020770323 U CN202020770323 U CN 202020770323U CN 212356862 U CN212356862 U CN 212356862U
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Abstract
The utility model discloses a copper-containing effluent disposal system. Wherein, copper-containing effluent disposal system includes: the copper-containing wastewater collection barrel is used for collecting copper-containing wastewater; the resin adsorption tank is internally provided with copper-absorbing resin, and the inlet of the resin adsorption tank is communicated with the outlet of the copper-containing wastewater collection barrel; the inlet of the electrolytic cell is communicated with the outlet of the resin adsorption tank; and the inlet of the adjusting barrel is communicated with the outlet of the electrolytic cell, and the outlet of the adjusting barrel is communicated with the inlet of the resin adsorption tank. The technical scheme of the utility model can improve resource utilization.
Description
Technical Field
The utility model relates to a copper-containing waste water treatment technical field, in particular to copper-containing waste water treatment system.
Background
In the production process in the field of electronic industry, especially in the process of PCB etching technology, copper-containing waste water is often generated, and because the copper-containing waste water contains copper ions, the copper ions need to be reasonably treated to recycle the metal copper therein. In the related technology, the copper-containing wastewater is usually treated by a method combining resin adsorption and electrolysis, namely, copper ions in the copper-containing wastewater are adsorbed by resin, and after the adsorption is saturated, the adsorbent is backwashed by a sulfuric acid solution to obtain a copper sulfate solution; then, the copper sulfate solution is electrolyzed to obtain electrolytic copper. Because the new sulfuric acid solution is mainly adopted for backwashing during backwashing, only a part of the electrolyzed sulfuric acid solution is circulated to backwashing, and the rest sulfuric acid solution is directly discharged as wastewater, resource waste is caused, and the resource utilization rate is poor.
The above is only for the purpose of assisting understanding of the technical solutions of the present invention, and does not represent an admission that the above is the prior art.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims at providing a copper-containing waste water recovery system aims at improving resource utilization.
In order to achieve the above object, the utility model provides a copper-containing wastewater treatment system, include: the copper-containing wastewater collection barrel is used for collecting copper-containing wastewater; the resin adsorption tank is internally provided with copper-absorbing resin, and the inlet of the resin adsorption tank is communicated with the outlet of the copper-containing wastewater collection barrel; the inlet of the electrolytic cell is communicated with the outlet of the resin adsorption tank; and the inlet of the adjusting barrel is communicated with the outlet of the electrolytic cell, and the outlet of the adjusting barrel is communicated with the inlet of the resin adsorption tank.
Optionally, a pipeline of the electrolytic cell communicated with the adjusting barrel is provided with a control valve for controlling the flow rate of the liquid in the pipeline.
Optionally, a concentration detector is disposed at an outlet of the electrolytic cell, and is configured to detect a concentration of the liquid at the outlet of the electrolytic cell.
Optionally, a pipeline of the adjusting barrel and the resin adsorption tank is provided with a flow meter for controlling the flow of liquid in the pipeline.
Optionally, the copper-containing wastewater treatment system further comprises an acid liquor barrel, sulfuric acid is contained in the acid liquor barrel, and an outlet of the acid liquor barrel is communicated with an inlet of the adjusting barrel.
Optionally, a pipeline of the acid liquid barrel and the adjusting barrel is provided with a flow meter and/or a switch valve.
Optionally, the copper-containing wastewater treatment system further comprises a transfer barrel, an inlet of the transfer barrel is communicated with an outlet of the resin adsorption tank, and an outlet of the transfer barrel is communicated with an inlet of the electrolytic cell.
Optionally, the copper-containing wastewater treatment system further comprises a water washing barrel, water is contained in the water washing barrel, and an outlet of the water washing barrel is communicated with an inlet of the resin adsorption tank to wash the copper-absorbing resin in the resin adsorption tank.
Optionally, the copper-containing wastewater treatment system further comprises a regeneration barrel, wherein an alkali liquor is contained in the regeneration barrel, and an outlet of the regeneration barrel is communicated with an inlet of the resin adsorption tank to regenerate the copper-absorbing resin in the resin adsorption tank.
Optionally, the copper-containing wastewater treatment system further comprises a waste liquid storage barrel, wherein an inlet of the waste liquid storage barrel is communicated with an outlet of the resin adsorption tank, and is used for collecting waste liquid in the resin adsorption tank.
The technical scheme of the utility model, copper-containing effluent disposal system includes copper-containing waste water collecting vessel, resin adsorption tank, electrolysis trough and adjustment bucket, and the import of resin adsorption tank communicates in the export of copper-containing waste water collecting vessel, and the import of electrolysis trough communicates in the export of resin adsorption tank, and the import of adjustment bucket communicates in the export of electrolysis trough, and the export of adjustment bucket communicates in the import of resin adsorption tank. Thus, when copper-containing wastewater in the copper-containing wastewater collecting barrel is treated, the copper-containing wastewater is introduced into the resin adsorption tank, copper ions in the copper-containing wastewater are adsorbed by the copper-adsorbing resin in the resin adsorption tank, after adsorption is saturated, the copper ions are backwashed by using sulfuric acid as a backwash liquid to obtain a sulfuric acid solution containing the copper ions, then the sulfuric acid solution containing the copper ions is introduced into the electrolytic cell for electrolysis, metal copper is obtained by deposition on the surface of a cathode, the electrolytic solution is the sulfuric acid solution containing a small amount of copper ions, the electrolytic solution is completely introduced into the adjusting barrel, the electrolytic solution is introduced into the resin adsorption tank after adjustment, and the copper-adsorbing resin is backwashed as the backwash liquid. Because the electrolyzed electrolyte can be completely circulated to the resin adsorption tank for backwashing, the waste of resources is effectively avoided, the resource utilization rate is improved, the consumption of sulfuric acid backwash liquid is saved, and the treatment cost is reduced to a certain extent.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic flow chart of an embodiment of the copper-containing wastewater treatment system of the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | Copper-containing |
50 | |
| 10 | Copper-containing |
60 | Waste |
| 20 | |
70 | |
| 30 | Adjusting |
80 | |
| 40 | |
90 | |
| 41 | |
110 | |
| 42 | |
120 | Acid |
| 43 | |
130 | |
| 44 | Cathode electrode |
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the technical solutions between the embodiments of the present invention can be combined with each other, but it is necessary to be able to be realized by a person having ordinary skill in the art as a basis, and when the technical solutions are contradictory or cannot be realized, the combination of such technical solutions should be considered to be absent, and is not within the protection scope of the present invention.
The utility model provides a copper-containing effluent disposal system 100 for handle copper-containing waste water.
Referring to fig. 1, in an embodiment of the copper-containing wastewater treatment system 100 of the present invention, the copper-containing wastewater treatment system 100 includes: a copper-containing wastewater collection barrel 10 for collecting copper-containing wastewater; a resin adsorption tank 20, wherein copper-absorbing resin is contained in the resin adsorption tank 20, and an inlet of the resin adsorption tank 20 is communicated with an outlet of the copper-containing wastewater collection barrel 10; an inlet of the electrolytic cell 40 is communicated with an outlet of the resin adsorption tank 20; and an adjusting barrel 30, wherein the inlet of the adjusting barrel 30 is communicated with the outlet of the electrolytic bath 40, and the outlet of the adjusting barrel 30 is communicated with the inlet of the resin adsorption tank 20.
The copper-absorbing resin in the resin adsorption tank 20 can be strong acid cation exchange resin, chelating resin or other reasonable and effective resins, copper ions with low concentration in the copper-containing wastewater can be adsorbed by the copper-absorbing resin, and a sulfuric acid solution containing copper ions can be obtained by backwashing with sulfuric acid after the copper ions are saturated by adsorption, wherein the concentration of the copper ions is about 12 g/L. And then, the sulfuric acid solution containing copper ions is introduced into an electrolytic bath 40 for electrolysis, metal copper can be obtained by deposition on the surface of a cathode 44 plate, the electrolyzed electrolyte is the sulfuric acid solution containing a small amount of copper ions, wherein the concentration of the copper ions is low and is generally 2g/L, the electrolyzed electrolyte can be introduced into an adjusting barrel 30 and can be introduced into a resin adsorption tank 20 after adjustment to be used as a backwashing liquid for backwashing copper-absorbing resin in the resin adsorption tank 20, so that the electrolyzed electrolyte can be completely circulated into the resin adsorption tank 20 for backwashing, the waste of resources is avoided, the resource utilization rate is improved, the consumption of sulfuric acid backwashing liquid is saved, and the treatment cost is reduced to a certain extent.
It should be noted that, because in the electrolytic process, the electrolyte after the electrolysis is produced continuously, be provided with adjustment bucket 30 and can collect the electrolyte after the electrolysis earlier, wait to collect a quantitative back, let in proper amount of electrolyte into resin adsorption tank 20 again and carry out the backwash operation, so, can guarantee that electrolysis operation and backwash operation do not influence each other, also can make full use of electrolyte after the electrolysis, further improve resource utilization.
Therefore, it can be understood that, the technical scheme of the utility model, copper-containing wastewater treatment system 100 includes copper-containing wastewater collecting vessel 10, resin adsorption tank 20, electrolysis trough 40 and adjustment bucket 30, and the import of resin adsorption tank 20 communicates in the export of copper-containing wastewater collecting vessel 10, and the import of electrolysis trough 40 communicates in the export of resin adsorption tank 20, and the import of adjustment bucket 30 communicates in the export of electrolysis trough 40, and the export of adjustment bucket 30 communicates in the import of resin adsorption tank 20. Thus, when copper-containing wastewater in the copper-containing wastewater collection barrel 10 is treated, the copper-containing wastewater is introduced into the resin adsorption tank 20, copper ions in the copper-containing wastewater are adsorbed by the copper-adsorbing resin in the resin adsorption tank 20, after the copper ions are adsorbed and saturated, backwashing is performed by using sulfuric acid as a backwashing liquid to obtain a sulfuric acid solution containing the copper ions, then the sulfuric acid solution containing the copper ions is introduced into the electrolytic tank 40 for electrolysis, metal copper is obtained by deposition on the surface of the cathode 44, the electrolyzed solution is a sulfuric acid solution containing a small amount of copper ions, the electrolyzed solution is introduced into the adjustment barrel 30, adjusted and then introduced into the resin adsorption tank 20, and the copper-adsorbing resin therein is backwashed as the backwashing liquid. Because the electrolyzed electrolyte can be completely circulated to the resin adsorption tank 20 for backwashing, the waste of resources is effectively avoided, the resource utilization rate is improved, the consumption of the sulfuric acid backwashing liquid is saved, and the treatment cost is reduced to a certain extent.
In an embodiment of the present invention, the electrolytic cell 40 includes a cell body 41, a diaphragm 42, an anode 43 and a cathode 44, the diaphragm 42, the anode 43 and the cathode 44 are all disposed in the cell body 41, and the diaphragm 42 separates the cell body 41 into an anode chamber and a cathode chamber, the anode 43 is accommodated in the anode chamber, the cathode 44 is accommodated in the cathode chamber, the anode 43 can be lead electrode, titanium electrode or graphite electrode, and the cathode 44 can be stainless steel plate or nickel plate.
Referring again to fig. 1, in an embodiment of the present invention, the pipeline connecting the electrolytic bath 40 and the adjusting barrel 30 is provided with a control valve 90 for controlling the flow rate of the liquid in the pipeline.
Here, the control valve 90 is generally a solenoid valve, and is generally disposed adjacent to the outlet of the conditioning tub 30, for controlling the flow rate in the pipe. Generally, if the concentration of copper ions in the electrolyzed electrolyte is higher, the flow rate of the electrolyte introduced into the resin adsorption tank 20 is reduced to ensure that the backwashing is more sufficient and effective, and the backwashing effect is improved. On the contrary, if the concentration of copper ions in the electrolyzed electrolyte is low, the flow rate of the electrolyte flowing into the resin adsorption tank 20 is increased, and the backwashing effect can be ensured as well.
In an embodiment of the present invention, a concentration detector (not shown) is disposed at the outlet of the electrolytic cell 40 for detecting the concentration of the liquid at the outlet of the electrolytic cell 40. The concentration detector can be used for detecting the concentration of copper ions in the electrolyzed electrolyte and determining the flow rate of the electrolyzed electrolyte introduced into the resin adsorption tank 20 according to the concentration of the copper ions, and the arrangement is favorable for the automatic control of the whole copper-containing wastewater treatment system 100.
Further, a pipe where the conditioning tub 30 communicates with the resin adsorption tank 20 is provided with a flow meter 110 for controlling the flow rate of liquid in the pipe.
In order to ensure that the backwashing effect of the copper-absorbing resin in the resin adsorption tank 20 is good, the flow rate of the electrolyte introduced into the resin adsorption tank 20 is reasonably and accurately controlled, and the flow meter 110 is arranged here to accurately control the flow rate of the electrolyte introduced into the resin adsorption tank 20, so that the better backwashing effect of the copper-absorbing resin is ensured.
It should be noted that a pipeline connecting the copper-containing wastewater collecting barrel 10 and the resin adsorption tank 20 is provided with a delivery pump (not shown) and a control valve 90, the delivery pump is used for rapidly delivering the copper-containing wastewater in the copper-containing wastewater collecting barrel 10 to the resin adsorption tank 20, and the control valve 90 is used for controlling the flow rate of the delivery process. Similarly, a flow meter 110 may be further provided in a pipe connecting the copper-containing wastewater collection tub 10 and the resin adsorption tank 20 to control the flow rate of the liquid in the pipe.
Of course, a control valve 90 may be provided on a pipe of the resin adsorption tank 20 communicating with the electrolytic bath 40 to control the flow rate of the liquid in the pipe. Similarly, a flow meter 110 may be provided in a pipe connecting the resin adsorption tank 20 and the electrolytic bath 40 to control the flow rate of the liquid in the pipe.
Since the sulfuric acid is used as a backwash liquid and a certain amount of waste is generated during the use process, it is necessary to add a new sulfuric acid solution into the adjustment tank 30 to supplement the backwash liquid in order to ensure smooth and efficient operation of the backwash process. The copper-containing wastewater treatment system 100 of the present invention further comprises an acid liquid barrel 120, sulfuric acid is contained in the acid liquid barrel 120, and the outlet of the acid liquid barrel 120 is communicated with the inlet of the adjustment barrel 30. With such an arrangement, when the amount of the electrolyte in the adjustment barrel 30 is small, some new sulfuric acid solution needs to be supplemented to ensure that the backwashing process is smoothly and effectively performed, and at this time, the sulfuric acid in the acid solution barrel 120 can be introduced into the adjustment barrel 30 to be supplemented.
In order to more accurately control the supplemented sulfuric acid amount so as to ensure reasonable and full utilization of resources. The flowmeter 110 is arranged on the pipeline for communicating the acid liquor barrel 120 with the adjusting barrel 30, so that the adding amount of the sulfuric acid can be controlled according to actual requirements.
It can be understood that a switch valve 130 is further disposed on the pipeline connecting the pickling barrel 120 and the adjustment barrel 30 to control the flow or block the flow of the liquid in the pipeline, that is, when the sulfuric acid needs to be supplemented, the switch valve 130 is opened to make the sulfuric acid in the pickling barrel 120 flow into the adjustment barrel 30; on the contrary, when the sulfuric acid is not required to be supplemented, the on-off valve 130 is closed to block the sulfuric acid in the acid solution tank 120 from flowing into the adjustment tank 30. The on-off valve 130 may be a control valve 90, such as a solenoid valve, which controls the flow rate of the sulfuric acid in the pipeline when it is opened, so as to facilitate the additional operation of the sulfuric acid.
Referring to fig. 1 again, in an embodiment of the present invention, the copper-containing wastewater treatment system 100 further includes a transfer barrel 50, an inlet of the transfer barrel 50 is connected to an outlet of the resin adsorption tank 20, and an outlet of the transfer barrel 50 is connected to an inlet of the electrolytic cell 40.
Because the backwashing process of the resin in the resin adsorption tank 20 is continuous, the generated copper ion-containing sulfuric acid solution is also continuous, and the transfer barrel 50 is arranged, the continuously generated copper ion-containing sulfuric acid solution can be collected firstly, after a certain amount of copper ion-containing sulfuric acid solution is collected, the copper ion-containing sulfuric acid solution with proper amount is introduced into the electrolytic tank 40 for electrolytic operation, so that the electrolytic operation and the backwashing operation are not influenced by each other, meanwhile, the copper-containing wastewater can be treated in batch, and the treatment capacity is higher.
Further, the copper-containing wastewater treatment system 100 further includes a water washing barrel 70, water is contained in the water washing barrel 70, and an outlet of the water washing barrel 70 is communicated with an inlet of the resin adsorption tank 20 for washing the copper-absorbing resin in the resin adsorption tank 20.
Because the copper-absorbing resin in the resin adsorption tank 20 is subjected to sulfuric acid backwashing, part of copper ions remained on the surface are not adsorbed, the part of copper ions can be dropped from the surface of the resin into the backwashing liquid by adopting water washing, and then the backwashing liquid containing the copper ions is subjected to electrolysis to recover the metal copper, so that the recovery rate of the metal copper can be effectively improved, and the resource waste is avoided.
It should be noted that, a switching valve 130 is provided on a pipeline connecting the water washing barrel 70 and the resin adsorption tank 20 to control the circulation or block the circulation of water in the pipeline, and after the copper-absorbed resin is back-washed, the switching valve 130 is opened to make the water in the water washing barrel 70 flow into the resin adsorption tank 20 to wash the resin therein; on the contrary, after the water washing, the on-off valve 130 is closed to block the water in the water washing tub 70 from flowing into the resin adsorption tank 20. Here, the on-off valve 130 may be a control valve 90, such as a solenoid valve, which controls the flow rate of water in the pipe when it is opened, so as to facilitate the resin washing operation.
Further, the copper-containing wastewater treatment system 100 further comprises a regeneration barrel 80, wherein the regeneration barrel 80 contains alkali liquor, and an outlet of the regeneration barrel 80 is communicated with an inlet of the resin adsorption tank 20 for regenerating the copper-absorbing resin in the resin adsorption tank 20.
After the copper-absorbing resin in the resin adsorption tank 20 is adsorbed and saturated, the alkali liquor in the regeneration barrel 80 is introduced into the resin adsorption tank 20 to regenerate the copper-absorbing resin with saturated adsorption so as to obtain the copper-absorbing resin with adsorption capacity again. Therefore, the copper-absorbing resin in the copper-absorbing resin can be recycled, the resource utilization rate is high, and the treatment cost is low.
It should be noted that a switching valve 130 is also disposed on the pipeline connecting the regeneration barrel 80 and the resin adsorption tank 20 to control the circulation or block the circulation of the alkali liquor in the pipeline, and after the copper-adsorbing resin is saturated by adsorption, the switching valve 130 is opened to make the alkali liquor in the regeneration barrel 80 flow into the resin adsorption tank 20 to regenerate the resin therein; on the contrary, after the resin is regenerated, the on-off valve 130 is closed to block the alkali solution in the regeneration barrel 80 from flowing into the resin adsorption tank 20. The on-off valve 130 can be a control valve 90, such as a solenoid valve, which can control the flow rate of the alkali solution in the pipeline when the on-off valve is opened, so as to facilitate the regeneration operation of the resin.
Further, the copper-containing wastewater treatment system 100 further includes a waste liquid storage barrel 60, wherein an inlet of the waste liquid storage barrel 60 is connected to an outlet of the resin adsorption tank 20 for collecting the waste liquid in the resin adsorption tank 20.
After the resin in the resin adsorption tank 20 is saturated, waste liquid is generated, and the waste liquid after the adsorption is introduced into the waste liquid storage barrel 60 to reach a certain amount and then is discharged to a sewage treatment station for unified treatment.
A transfer pump (not shown) is provided in a pipe connecting the resin adsorption tank 20 and the waste liquid storage tank 60, and the waste liquid adsorbed in the resin adsorption tank 20 can be transferred into the waste liquid storage tank 60 by the transfer pump through the pipe.
The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.
Claims (10)
1. A copper-containing wastewater treatment system, comprising:
the copper-containing wastewater collection barrel is used for collecting copper-containing wastewater;
the resin adsorption tank is internally provided with copper-absorbing resin, and the inlet of the resin adsorption tank is communicated with the outlet of the copper-containing wastewater collection barrel;
the inlet of the electrolytic cell is communicated with the outlet of the resin adsorption tank; and
and the inlet of the adjusting barrel is communicated with the outlet of the electrolytic cell, and the outlet of the adjusting barrel is communicated with the inlet of the resin adsorption tank.
2. The copper-containing wastewater treatment system according to claim 1, wherein the pipe connecting the electrolytic cell and the conditioning tank is provided with a control valve for controlling the flow rate of the liquid in the pipe.
3. The copper-containing wastewater treatment system according to claim 1, wherein a concentration detector is provided at the outlet of the electrolytic cell for detecting the concentration of the liquid at the outlet of the electrolytic cell.
4. The copper-containing wastewater treatment system according to claim 1, wherein a pipe connecting the conditioning tank and the resin adsorption tank is provided with a flow meter for controlling a flow rate of a liquid in the pipe.
5. The copper-containing wastewater treatment system according to any one of claims 1 to 4, further comprising an acid liquor bucket, wherein sulfuric acid is contained in the acid liquor bucket, and an outlet of the acid liquor bucket is communicated with an inlet of the adjusting bucket.
6. The copper-containing wastewater treatment system according to claim 5, wherein the pipe connecting the acid liquor bucket and the adjustment bucket is provided with a flow meter and/or a switch valve.
7. The copper-containing wastewater treatment system according to any one of claims 1 to 4, further comprising a transfer drum, wherein an inlet of the transfer drum is communicated with an outlet of the resin adsorption tank, and an outlet of the transfer drum is communicated with an inlet of the electrolytic cell.
8. The copper-containing wastewater treatment system according to any one of claims 1 to 4, further comprising a water washing barrel, wherein water is contained in the water washing barrel, and an outlet of the water washing barrel is communicated with an inlet of the resin adsorption tank for washing the copper-absorbed resin in the resin adsorption tank with water.
9. The copper-containing wastewater treatment system according to any one of claims 1 to 4, further comprising a regeneration barrel, wherein the regeneration barrel contains alkaline solution, and an outlet of the regeneration barrel is communicated with an inlet of the resin adsorption tank for regenerating the copper-adsorbing resin in the resin adsorption tank.
10. The copper-containing wastewater treatment system according to any one of claims 1 to 4, further comprising a waste liquid storage tank, wherein an inlet of the waste liquid storage tank is connected to an outlet of the resin adsorption tank for collecting the waste liquid in the resin adsorption tank.
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|---|---|---|---|
| CN202020770323.XU CN212356862U (en) | 2020-05-11 | 2020-05-11 | Copper-containing wastewater treatment system |
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| CN202020770323.XU CN212356862U (en) | 2020-05-11 | 2020-05-11 | Copper-containing wastewater treatment system |
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| CN212356862U true CN212356862U (en) | 2021-01-15 |
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