A device for efficiently recovering copper from low-concentration copper-containing wastewater

Abstract

The utility model relates to copper-containing wastewater recovery technical field, and disclose a kind of low concentration copper-containing wastewater efficient recovery copper's device, including copper-containing waste liquid raw material storage tank, lye blending tank, reaction kettle, filter press, beating tank and reuse water tank, copper-containing waste liquid raw material storage tank and lye blending tank are connected with reaction kettle by pump machine, reaction kettle and beating tank are connected with filter press by pump machine, reuse water tank is connected with beating tank by pump machine, reuse water tank is connected with filter press by pipeline, the utility model effectively recycles low concentration copper-containing wastewater and prepares it as higher value copper oxide product, not only reduce the disposal cost of copper-containing wastewater, but also convert it into higher value product, and highly utilize the water filtered out in disposal process for reuse, reduce the disposal amount of back-end wastewater while recycling, and use in-plant self-produced steam, thereby bringing great economic benefits, with great practical value.

Description

Technical Field

[0001] This utility model relates to the field of copper-containing wastewater recovery technology, specifically a device for efficiently recovering copper from low-concentration copper-containing wastewater. Background Technology

[0002] Industrial production processes generate large amounts of copper-containing wastewater. Direct discharge of this wastewater not only wastes copper resources but also causes serious environmental pollution, especially to water bodies. Therefore, the recovery and treatment of copper from copper-containing wastewater is of significant economic and environmental importance.

[0003] Currently, while there has been some progress in the treatment and recovery technologies for copper-containing wastewater, low recovery efficiency is often encountered when treating low-concentration copper-containing wastewater. Traditional methods such as chemical precipitation are insufficient to effectively extract copper ions from wastewater, resulting in low copper recovery rates. Methods like electrochemical deposition or resin filtration suffer from high recovery costs and large volumes of secondary treatment water. Furthermore, existing recovery devices have shortcomings in process design, equipment connection, and resource recycling. For example, they cannot achieve efficient material transfer and rational resource allocation during treatment, leading to high energy consumption, complex operation, and difficulty in obtaining high-quality recovered copper products and environmentally compliant recycled water.

[0004] Therefore, it is crucial to develop a device for efficiently recovering copper from low-concentration copper-containing wastewater, which can achieve efficient copper recovery while simplifying operation and reducing the amount of wastewater to be disposed of at the downstream. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] Based on this, the development of a highly efficient copper recovery device for low-concentration copper-containing wastewater is needed to solve the problems of low recovery efficiency and unreasonable resource utilization in existing technologies. This has become an urgent technical challenge in the field of copper-containing wastewater treatment.

[0007] (II) Technical Solution

[0008] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0009] An apparatus for efficient copper recovery from low-concentration copper-containing wastewater includes a copper-containing wastewater raw material storage tank, an alkali solution mixing tank, a reaction vessel, a filter press, a pulping tank, and a recycled water tank. The copper-containing wastewater raw material storage tank and the alkali solution mixing tank are both connected to the reaction vessel via pumps. The reaction vessel and the pulping tank are both connected to the filter press via pumps. The recycled water tank is connected to the pulping tank via a pump and is connected to the filter press via a pipeline.

[0010] Based on the above technical solution, the present invention can be further improved as follows.

[0011] Preferably, the top of the copper-containing waste liquid raw material storage tank is provided with a raw material inlet, a raw material tank exhaust gas collection port and a first reserved port, and the side of the copper-containing waste liquid raw material storage tank is provided with a raw material storage tank cleaning port and a waste liquid outlet. The waste liquid outlet is connected to the reaction vessel through a copper-containing waste liquid pump.

[0012] Preferably, the top of the alkali preparation tank is provided with a liquid alkali feeding port and a tap water inlet. The top of the alkali preparation tank is provided with a stirring device A that penetrates and extends into the interior of the alkali preparation tank. The bottom of the alkali preparation tank is provided with a liquid alkali outlet, which is connected to the reaction vessel through an alkali pump.

[0013] Preferably, the top of the reactor is provided with an alkali inlet, a copper-containing waste liquid inlet, and a live steam inlet. The alkali inlet is connected to an alkali pump, and the copper-containing waste liquid inlet is connected to a copper-containing waste liquid pump. A steam flow control valve is provided on the live steam inlet. The top of the reactor is provided with a temperature probe, a pH probe, and a stirring device B that extend through and into the reactor. The bottom of the reactor is provided with an vent A and a copper oxide slurry outlet A. The copper oxide slurry outlet A is connected to a filter press through a slurry pump A.

[0014] Preferably, the filter press has a filter press inlet A, a filter press inlet B, an outlet A and an outlet B arranged from top to bottom on the left side, a filter press motor on the right side, and a feed hopper at the bottom of the filter press.

[0015] Preferably, the hopper has a cleaning port on its side, the bottom of the hopper is connected to the hopper trough A and the hopper trough B, a gate is provided at the connection between the hopper and the hopper trough A and the hopper trough B, the hopper trough A is connected to the pulping tank through the copper oxide mud inlet, and a product collection bucket is provided on the lower side of the hopper trough B.

[0016] Preferably, the top of the pulping tank is provided with a copper oxide sludge inlet and a recycled water inlet. The top of the pulping tank is provided with a stirring device C that extends through and into the inside of the pulping tank. The bottom of the pulping tank is provided with an air outlet B and a copper oxide sludge outlet B. The copper oxide sludge outlet B is connected to the filter press inlet B through a sludge pump B.

[0017] Preferably, the top of the recycled water tank is provided with a recycled water inlet, a recycled water tank vent, and a reserved port C. A conductivity meter is installed at the reserved port C. The side of the recycled water tank is provided with a recycled water tank cleaning port. The bottom of the recycled water tank is provided with a recycled water outlet. The recycled water outlet is connected to the recycled water inlet through a recycled water pump.

[0018] Preferably, the outlet A is connected to the high-salt wastewater tank via a pipe. The top of the high-salt wastewater tank has a high-salt wastewater pressure balance port, a high-salt wastewater tank exhaust port, and a high-salt wastewater inlet arranged from left to right. The side of the high-salt wastewater tank has a high-salt wastewater tank cleaning port and an evaporation outlet.

[0019] (III) Beneficial Effects

[0020] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0021] This invention effectively recovers low-concentration copper-containing wastewater and prepares it into higher-value copper oxide products. It not only reduces the treatment cost of copper-containing wastewater but also transforms it into higher-value products. Furthermore, it makes full use of the water filtered out during the treatment process for reuse, thus reducing the amount of wastewater to be treated at the downstream end while simultaneously achieving resource recovery. In addition, it uses steam generated on-site, thereby bringing significant economic benefits and possessing considerable practical value. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the overall left side structure of this utility model;

[0024] Figure 3 This is a schematic diagram of the overall right side structure of this utility model.

[0025] In the diagram: 1. Raw material inlet; 2. Raw material tank exhaust gas collection port; 3. First reserved port; 4. Copper-containing waste liquid raw material storage tank; 5. Raw material storage tank cleaning port; 6. Waste liquid outlet; 7. Copper-containing waste liquid pump; 8. Liquid alkali feeding port; 9. Stirring device A; 10. Tap water inlet; 11. Alkali solution mixing tank; 12. Liquid alkali outlet; 13. Alkali solution pump; 14. Alkali solution inlet; 15. Copper-containing waste liquid inlet; 16. Temperature probe; 17. Live steam inlet; 18. Steam flow control valve; 19. Stirring device B; 20. pH probe; 21. Reactor; 22. Copper oxide slurry outlet A; 23. Exhaust port A; 24. Slurry pump A; 25. High-salt wastewater pressure balance port; 26. High-salt wastewater tank exhaust port; 27. High-salt wastewater inlet; 28. High-salt wastewater tank. 29. High-salt wastewater tank cleaning port; 30. Evaporation outlet; 31. Filter press inlet A; 32. Filter press inlet B; 33. Outlet A; 34. Outlet B; 35. Filter press; 36. Filter press motor; 37. Feed hopper; 38. Cleaning port; 39. Gate; 40. Feed trough A; 41. Feed trough B; 42. Copper oxide sludge feed inlet; 43. Agitator C; 44. Reclaimed water inlet; 45. Pulping tank; 46. Copper oxide sludge outlet B; 47. Drain B; 48. Slurry pump B; 49. Product collection tank; 50. Reclaimed water inlet; 51. Reclaimed water tank vent; 52. Conductivity meter; 53. Reserved port C; 54. Reclaimed water tank; 55. Reclaimed water tank cleaning port; 56. Reclaimed water outlet; 57. Reclaimed water pump. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] In the embodiments, by Figure 1-3 A device for efficient copper recovery from low-concentration copper-containing wastewater is provided, comprising a copper-containing wastewater raw material storage tank 4, an alkali solution mixing tank 11, a reaction vessel 21, a filter press 35, a pulping tank 45, and a recycled water tank 54. The copper-containing wastewater raw material storage tank 4 and the alkali solution mixing tank 11 are both connected to the reaction vessel 21 via pumps. The reaction vessel 21 and the pulping tank 45 are both connected to the filter press 35 via pumps. The recycled water tank 54 is connected to the pulping tank 45 via a pump and is connected to the filter press 35 via a pipeline.

[0028] The top of the copper-containing waste liquid raw material storage tank 4 is provided with a raw material inlet 1, a raw material tank exhaust gas collection port 2 and a first reserved port 3. The side of the copper-containing waste liquid raw material storage tank 4 is provided with a raw material storage tank cleaning port 5 and a waste liquid outlet 6. The waste liquid outlet 6 is connected to the reaction vessel 21 through a copper-containing waste liquid pump 7.

[0029] The top of the alkali preparation tank 11 is provided with a liquid alkali feeding port 8 and a tap water inlet 10. The top of the alkali preparation tank 11 is provided with a stirring device A9 that penetrates and extends into the interior of the alkali preparation tank 11. The bottom of the alkali preparation tank 11 is provided with a liquid alkali outlet 12, which is connected to the reaction vessel 21 through an alkali pump 13.

[0030] The top of the reactor 21 is provided with an alkali inlet 14, a copper-containing waste liquid inlet 15 and a live steam inlet 17. The alkali inlet 14 is connected to the alkali pump 13, the copper-containing waste liquid inlet 15 is connected to the copper-containing waste liquid pump 7, and the live steam inlet 17 is provided with a steam flow control valve 18. The top of the reactor 21 is provided with a temperature probe 16, a pH probe 20 and a stirring device B19 that extend through and into the reactor 21. The bottom of the reactor 21 is provided with an air vent A23 and a copper oxide slurry outlet A22. The copper oxide slurry outlet A22 is connected to the filter press 35 through a slurry pump A24.

[0031] The filter press 35 has filter press inlet A31, filter press inlet B32, outlet A33 and outlet B34 arranged from top to bottom on the left side, filter press motor 36 on the right side, and feed hopper 37 at the bottom of the filter press 35.

[0032] The side of the hopper 37 is provided with a cleaning port 38. The bottom of the hopper 37 is connected to the trough A40 and the trough B41. A gate 39 is provided at the connection between the hopper 37 and the troughs A40 and B41. The trough A40 is connected to the pulping tank 45 through the copper oxide mud inlet 42. A product collection bucket 49 is provided on the lower side of the trough B41.

[0033] The top of the pulping tank 45 is provided with a copper oxide sludge inlet 42 and a recycled water inlet 44. The top of the pulping tank 45 is provided with a stirring device C43 that extends through and into the interior of the pulping tank 45. The bottom of the pulping tank 45 is provided with an air outlet B47 and a copper oxide sludge outlet B46. The copper oxide sludge outlet B46 is connected to the filter press inlet B32 through a sludge pump B48.

[0034] The top of the recycled water tank 54 is provided with a recycled water inlet 50, a recycled water tank vent 51 and a reserved port C53. A conductivity meter 52 is installed at the reserved port C53. A recycled water tank cleaning port 55 is provided on the side of the recycled water tank 54. A recycled water outlet 56 is provided at the bottom of the recycled water tank 54. The recycled water outlet 56 is connected to the recycled water inlet 44 through a recycled water pump 57.

[0035] The outlet A33 is connected to the high-salt wastewater tank 28 through a pipe. The top of the high-salt wastewater tank 28 has a high-salt wastewater pressure balance port 25, a high-salt wastewater tank exhaust port 26 and a high-salt wastewater inlet 27 arranged from left to right. The side of the high-salt wastewater tank 28 has a high-salt wastewater tank cleaning port 29 and an evaporation outlet 30.

[0036] Working process: Copper-containing waste liquid enters the copper-containing waste liquid raw material storage tank 4 through the raw material inlet 1. Waste gas is discharged from the raw material tank waste gas collection port 2. Liquid alkali enters the alkali mixing tank 11 through the liquid alkali feeding port 8 and the tap water inlet 10. After being mixed by the stirring device A9, it is pumped to the reaction vessel 21 by the alkali pump 13. Waste liquid enters the reaction vessel 21 through the copper-containing waste liquid pump 7 and is mixed with the alkali. It is heated by the live steam inlet 17 (the temperature is adjusted by the steam flow control valve 18). The stirring device B19 promotes the reaction. The temperature probe 16 and pH probe 20 monitor the reaction in real time. The pH is adjusted until copper ions generate copper oxide precipitate. After the reaction, the slurry is sent to the filter press 35 by the slurry pump A24 to separate copper oxide sludge (which enters the discharge hopper 37) and The filtrate (enters the high-salt wastewater tank 28 through outlet A33) is driven by the filter press motor 36 for filtration. The filtrate enters the recycled water tank 54 through a pipeline (the water quality is monitored by the conductivity meter 52). The copper oxide sludge in the feed hopper 37 selects a path through the gate 39: the feed trough A40 enters the pulping tank 45 (through the copper oxide sludge inlet 42), and is mixed with the recycled water pumped by the recycled water pump 57 (pulping by the stirring device C43); the feed trough B41 directly enters the product collection bucket 49 for packaging; the purified water stored in the recycled water tank 54 is supplied to the pulping tank 45 or the cleaning equipment (raw material storage tank cleaning port 5, recycled water tank cleaning port 55) through the recycled water pump 57; the high-salt wastewater enters the subsequent evaporation treatment through the evaporation outlet 30.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for efficient recovery of copper from low concentration copper-containing wastewater, characterized in that, The system includes a copper-containing waste liquid raw material storage tank (4), an alkali solution mixing tank (11), a reaction vessel (21), a filter press (35), a pulping tank (45), and a recycled water tank (54). The copper-containing waste liquid raw material storage tank (4) and the alkali solution mixing tank (11) are connected to the reaction vessel (21) via pumps. The reaction vessel (21) and the pulping tank (45) are connected to the filter press (35) via pumps. The recycled water tank (54) is connected to the pulping tank (45) via pumps and is connected to the filter press (35) via pipelines.

2. The device for efficiently recovering copper from low-concentration copper-containing wastewater according to claim 1, characterized in that: The top of the copper-containing waste liquid raw material storage tank (4) is provided with a raw material inlet (1), a raw material tank exhaust gas collection port (2) and a first reserved port (3). The side of the copper-containing waste liquid raw material storage tank (4) is provided with a raw material storage tank cleaning port (5) and a waste liquid outlet (6). The waste liquid outlet (6) is connected to the reaction vessel (21) through a copper-containing waste liquid pump (7).

3. The device for efficiently recovering copper from low-concentration copper-containing wastewater according to claim 1, characterized in that: The top of the alkali preparation tank (11) is provided with a liquid alkali feeding port (8) and a tap water inlet (10). The top of the alkali preparation tank (11) is provided with a stirring device A (9) that runs through and extends into the interior of the alkali preparation tank (11). The bottom of the alkali preparation tank (11) is provided with a liquid alkali outlet (12). The liquid alkali outlet (12) is connected to the reaction vessel (21) through an alkali pump (13).

4. The device for efficiently recovering copper from low-concentration copper-containing wastewater according to claim 2 or 3, characterized in that: The reactor (21) is provided with an alkaline inlet (14), a copper-containing waste liquid inlet (15) and a live steam inlet (17) at the top. The alkaline inlet (14) is connected to the alkaline pump (13), and the copper-containing waste liquid inlet (15) is connected to the copper-containing waste liquid pump (7). The live steam inlet (17) is provided with a steam flow control valve (18). The reactor (21) is provided with a temperature probe (16), a pH probe (20) and a stirring device B (19) at the top. The reactor (21) is provided with an air vent A (23) and a copper oxide slurry outlet A (22) at the bottom. The copper oxide slurry outlet A (22) is connected to the filter press (35) through the slurry pump A (24).

5. The device for efficiently recovering copper from low-concentration copper-containing wastewater according to claim 1, characterized in that: The filter press (35) has filter press inlet A (31), filter press inlet B (32), outlet A (33) and outlet B (34) arranged from top to bottom on the left side, filter press motor (36) on the right side, and feed hopper (37) at the bottom of the filter press (35).

6. The device for efficiently recovering copper from low-concentration copper-containing wastewater according to claim 5, characterized in that: The side of the feeding hopper (37) is provided with a cleaning port (38). The bottom of the feeding hopper (37) is connected to the feeding trough A (40) and the feeding trough B (41). A gate (39) is provided at the connection between the feeding hopper (37) and the feeding trough A (40) and the feeding trough B (41). The feeding trough A (40) is connected to the pulping tank (45) through the copper oxide mud inlet (42). A product collection bucket (49) is provided on the lower side of the feeding trough B (41).

7. The device for efficiently recovering copper from low-concentration copper-containing wastewater according to claim 5, characterized in that: The top end of the beating tank (45) is provided with a copper oxide mud feeding port (42) and a recycled water inlet (44), the top end of the beating tank (45) is provided with a stirring device C (43) penetrating through one end and extending to the inside of the beating tank (45), the bottom end of the beating tank (45) is provided with a emptying port B (47) and a copper oxide slurry outlet B (46), the copper oxide slurry outlet B (46) is connected with the filter press water inlet B (32) through a slurry pump B (48).

8. The device for efficiently recovering copper from low-concentration copper-containing wastewater according to claim 7, characterized in that: The top end of the recycled water tank (54) is provided with a recycled water inlet (50), a recycled water tank exhaust port (51) and a reserved port C (53), the reserved port C (53) is provided with an electric conductivity instrument (52), the side of the recycled water tank (54) is provided with a recycled water tank cleaning port (55), the bottom end of the recycled water tank (54) is provided with a recycled water outlet (56), the recycled water outlet (56) is connected with the recycled water inlet (44) through a recycled water pump (57).

9. The device for efficiently recovering copper from low-concentration copper-containing wastewater according to claim 5, characterized in that: The water outlet A (33) is connected with the high-salinity wastewater tank (28) through a pipeline, the top end of the high-salinity wastewater tank (28) is provided with a high-salinity wastewater pressure balance port (25), a high-salinity wastewater tank exhaust port (26) and a high-salinity wastewater inlet (27) arranged from left to right, the side of the high-salinity wastewater tank (28) is provided with a high-salinity wastewater tank cleaning port (29), and the side of the high-salinity wastewater tank (28) is provided with a steam removal water outlet (30).

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