Surface treatment off-line nickel liquid medicine centralized treatment device and method

Abstract

The invention discloses a surface treatment off-line nickel liquid medicine centralized treatment device and method.The device comprises an electrolysis tank, electrolysis equipment, an electrode, an air blower, a filter screen, a sludge collecting tank and secondary purification device.The treatment method comprises the steps that to-be-treated nickel liquid medicine is injected into the electrolysis tank, the air blower aerates the nickel liquid medicine, the filter screen is jacked up, and the sludge collecting tank and the secondary purification equipment are separated; impurities in the nickel liquid medicine are captured, pushed upwards and discharged into a sludge collecting tank through a sludge discharging opening, and the impurities are filtered out before electrolysis; the electrolysis equipment operates, the nickel liquid medicine is subjected to electrolysis treatment through electrodes, during the period, the electrolysis equipment and an air blower alternately operate at intervals, and sludge is guided out in batches; after electrolysis is completed, the treated water body is discharged into secondary purification equipment to be subjected to secondary purification treatment. The invention can solve the problems of low treatment efficiency, poor treatment quality, long time consumption in the whole process, high operation difficulty and high energy consumption cost when the existing surface treatment production line external nickel liquid medicine waste liquid centralized treatment device and method are used.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of surface treatment, in particular to a surface treatment line external nickel chemical water centralized processing device and method. BACKGROUND

[0002] After the surface treatment production line processing such as electroplating of workpieces, the generated nickel chemical water waste liquid needs to be centrally recovered and treated. One of the existing treatment methods for this type of waste liquid is electrolytic treatment, which can realize the recovery of nickel and other substances in the waste liquid, improve energy utilization, and reduce costs. However, the use of this process and the corresponding device is affected by the many suspended particulate impurities in the waste liquid after surface treatment, which affects the subsequent continuous electrolytic treatment. The sludge produced by electrolysis affects the electrolysis progress, and it is generally discharged and treated uniformly after electrolysis is completed, which makes the electrolysis process operation flow more complex, the operation time longer, and the sludge cleaning more difficult, resulting in a longer electrolysis whole-process operation time, lower operation efficiency, higher energy consumption cost, lower surface treatment waste liquid centralized electrolysis treatment efficiency, poorer treatment quality, longer whole-process time, and higher energy consumption cost. SUMMARY

[0003] The purpose of the present application is to solve the problems of low treatment efficiency, poor treatment quality, long whole-process time, and high energy consumption cost of the existing surface treatment production line external nickel chemical water waste liquid centralized processing device and method, and to provide a surface treatment line external nickel chemical water centralized processing device and method.

[0004] To achieve the above purpose, the present application adopts the following technical scheme: a surface treatment line external nickel chemical water centralized processing device, comprising:

[0005] An electrolytic tank is provided with an electrolytic cavity inside, and a liquid inlet communicating with the electrolytic cavity is provided on the electrolytic tank. The top of the electrolytic cavity also extends outward to form a sludge discharge port;

[0006] An electrolytic device is assembled on the electrolytic tank, and an electrode on the electrolytic device extends into the electrolytic cavity;

[0007] A blower is arranged at the bottom of the electrolytic cavity;

[0008] A filter screen covers the horizontal cross section of the electrolytic cavity, the edge of the filter screen closely fits and slidingly connects the side wall of the electrolytic cavity, a plurality of flow-through holes are provided on the filter screen, and the electrode penetrates through the filter screen;

[0009] A sludge collection tank is assembled on the electrolytic tank and communicates with the sludge discharge port;

[0010] A secondary purification device is connected to the liquid discharge structure of the electrolytic tank.

[0011] Further description of the above technical scheme:

[0012] Several groups of the sludge discharge port and the sludge collection tank are respectively arranged around the electrolytic tank, and the liquid inlet is located above the sludge discharge port.

[0013] As a further description of the above technical solution:

[0014] The inner end to the outer end of the sludge discharge port forms a downward extending slope.

[0015] As a further description of the above technical solution:

[0016] The bottom of the electrode is positioned on the bottom surface of the electrolytic cavity through the base with the same cross-sectional size.

[0017] As a further description of the above technical solution:

[0018] Several air blowers are respectively arranged on the bottom surface and the side bottom of the electrolytic cavity.

[0019] As a further description of the above technical solution:

[0020] The central bottom surface of the filter screen is provided with a boss, and the distribution density of the flow-through through holes gradually increases from the center to the edge of the filter screen.

[0021] As a further description of the above technical solution:

[0022] The side surface of the electrolytic cavity is provided with a vertical guide rail, the edge of the filter screen is connected to a ring-shaped frame, and the ring-shaped frame closely fits the four side walls of the electrolytic cavity and is slidably connected to the vertical guide rail through the outer side gap.

[0023] As a further description of the above technical solution:

[0024] The sludge discharge port communicates with the sludge cavity in the sludge collection tank, and the sludge cavity is connected to the sludge discharge pipe.

[0025] As a further description of the above technical solution:

[0026] The secondary purification equipment is a reverse osmosis equipment, the liquid discharge structure includes an inner channel and a liquid discharge port, the secondary purification equipment is connected to the liquid discharge port through a pipe fitting, the liquid discharge port is connected to the electrolytic cavity through the inclined inner channel, and the bottom of the electrolytic tank is provided with several elevated feet.

[0027] A surface treatment line external nickel chemical water centralized processing device corresponding processing method, comprising the following steps:

[0028] S1, the nickel medicine water to be treated is injected into the electrolysis cavity from the liquid inlet, the air blower aerates the nickel medicine water, the filter screen is lifted up, the impurities in the nickel medicine water are captured, pushed up and discharged into the sludge collecting tank from the sludge discharge port, and the impurities are filtered out before electrolysis and the nickel medicine water is stirred;

[0029] S2, the electrolysis equipment is operated to electrolyze the nickel medicine water through the electrode, during which, the electrolysis equipment and the air blower are alternately and intervally operated to discharge the sludge in batches and stir the nickel medicine water during the electrolysis process;

[0030] S3, after the electrolysis is completed, the treated water is discharged into the secondary purification equipment from the liquid discharge structure for secondary purification treatment.

[0031] As described above, by adopting the technical scheme, the present application has the following beneficial effects compared with the prior art:

[0032] The nickel medicine water centralized treatment device and method outside the surface treatment production line of the present application have the following effects when used: the nickel medicine water to be treated is injected into the electrolysis cavity from the liquid inlet, the air blower aerates the nickel medicine water, the filter screen is lifted up, the impurities in the nickel medicine water are captured, pushed up and discharged into the sludge collecting tank from the sludge discharge port, and the impurities are filtered out before electrolysis and the nickel medicine water is stirred to ensure the electrolysis efficiency of the subsequent nickel medicine water; the electrolysis equipment is operated to electrolyze the nickel medicine water through the electrode, during which, the electrolysis equipment and the air blower are alternately and intervally operated (i.e. one equipment is operated while the other equipment is not operated, to avoid the influence of the flowing water on the electrolysis quality, the generation of sludge and the increase of the electrolysis time and energy consumption when they are operated synchronously, and to prevent the sludge from being generated at the bottom of the filter screen when the filter screen is lifted up, which causes the subsequent separation to be impossible), to discharge the sludge in batches and stir the nickel medicine water during the electrolysis process, so that the electrolysis and sludge cleaning are staggered, the cleaning efficiency of the sludge generated by electrolysis is improved, the electrolysis efficiency is further improved, the sludge cleaning process after electrolysis is omitted, the overall operation efficiency of the electrolysis process is improved, and the operation time is reduced; after the electrolysis is completed, the treated water is discharged into the secondary purification equipment from the liquid discharge structure for secondary purification treatment, the secondary purification of the water after electrolysis is carried out based on the reverse osmosis technology, and the treatment quality is improved. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope, and other related drawings can also be obtained by those skilled in the art without creative labor.

[0034] Figure 1 It is a structural schematic view of a nickel medicine water centralized treatment device outside a surface treatment line.

[0035] Figure 2 Use state of electrolytic tank in surface treatment line external nickel medicine water centralized treatment device Figure One .

[0036] Figure 3 Use state of electrolytic tank in surface treatment line external nickel medicine water centralized treatment device Figure Two .

[0037] Legend:

[0038] 1, electrolytic tank; 2, electrolytic cavity; 3, liquid inlet; 4, sludge outlet; 5, electrolytic equipment; 6, electrode; 7, air blower; 8, filter screen; 9, sludge collection tank; 10, secondary purification equipment; 11, base; 12, boss; 13, vertical guide rail; 14, annular frame; 15, sludge cavity; 16, sludge discharge pipe; 17, inner channel; 18, liquid outlet; 19, heightening support. DETAILED DESCRIPTION

[0039] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will be combined with the accompanying drawings of the embodiments of the present application to make a clear and complete description of the technical solutions in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the accompanying drawings can be arranged and designed in various different configurations.

[0040] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative labor are within the scope of protection of the present application.

[0041] It should be noted that: similar reference numbers and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0042] In the description of the embodiments of the present application, it should be noted that the orientation or positional relationship indicated by the terms "upper", "inner" and the like is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the product of the present application is used, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0043] In the description of the present application, it is also necessary to explain that, unless otherwise explicitly specified and limited, the terms "arrange", "mount", "connect", "connect" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0044] Please refer to Figures 1-3 The present application provides a technical solution: a surface treatment line external nickel chemical concentrated processing device, comprising:

[0045] An electrolytic tank 1 is provided with an electrolytic cavity 2 inside, and a liquid inlet 3 communicating with the electrolytic cavity 2 is arranged on the electrolytic tank 1. The top of the electrolytic cavity 2 also extends outwardly to form a sludge discharge port 4;

[0046] An electrolytic device 5 is assembled on the electrolytic tank 1, and an electrode 6 on the electrolytic device 5 extends into the electrolytic cavity 2;

[0047] A blower 7 is arranged at the bottom of the electrolytic cavity 2;

[0048] A filter screen 8 covers the horizontal section of the electrolytic cavity 2, the edge of which closely fits and slidingly connects the side wall of the electrolytic cavity 2, and a plurality of overflow through holes are arranged on the filter screen 8, and the electrode 6 penetrates through the filter screen 8;

[0049] A sludge collection tank 9 is assembled on the electrolytic tank 1 and communicates with the sludge discharge port 4;

[0050] A secondary purification device 10 is connected to the liquid discharge structure of the electrolytic tank 1.

[0051] A plurality of sets of sludge discharge ports 4 and sludge collection tanks 9 are arranged around the electrolytic tank 1, and the liquid inlet 3 is located above the sludge discharge port 4. The inner end to the outer end of the sludge discharge port 4 forms a downwardly extending slope. Thus, the impurities and sludge are fully and quickly discharged.

[0052] The bottom of the electrode 6 is positioned on the bottom surface of the electrolytic cavity 2 by a base 11 with the same cross-sectional dimension, so as to ensure that the electrode 6 is positioned stably, and the filter screen 8 can closely and gaplessly slide on the electrode 6 and the base 11, avoiding the leakage of impurities and sludge from there to affect the separation efficiency.

[0053] A plurality of blowers 7 are arranged on the bottom surface and the side bottom of the electrolytic cavity 2, so as to ensure the stirring efficiency and the sufficient jacking force of the filter screen 8.

[0054] The central bottom surface of the filter screen 8 is provided with a boss 12, and the distribution density of the flow-through holes gradually increases from the center to the edge of the filter screen 8. In this way, the lifting force of the bubbles formed by the air blower 7 on the middle part of the filter screen 8 is higher than that on the edge of the filter screen 8, and the filter screen 8 is pushed up in a conical shape, and the impurities and sludge on the surface of the nickel liquor are guided by the wedge surface of the filter screen 8 and fully separated and discharged into the sludge collecting tank 9, thereby further improving the separation efficiency. The upward movement of the filter screen 8 can cooperate with the air blower 7 to further improve the stirring efficiency of the nickel liquor, ensure uniform distribution of the components in the nickel liquor, and improve the electrolysis efficiency. The boss 12 is arranged to enable the bubbles in the nickel liquor to lift the boss 12 when the middle part of the filter screen 8 is pushed out of the liquid surface, so that the filter screen 8 continues to rise in a conical shape. When the top surface of the filter screen 8 is moved out of the liquid surface as a whole, the impurities and sludge are guided by the wedge surface and fully discharged into the sludge collecting tank 9.

[0055] The side surface of the electrolytic cavity 2 is provided with a vertical guide rail 13, the edge of the filter screen 8 is connected to a ring-shaped frame 14, and the ring-shaped frame 14 closely fits the four side walls of the electrolytic cavity 2 and is slidably connected to the vertical guide rail 13 through the outer side gap. In this way, the joint tightness and sliding stability of the filter screen 8 and the side wall of the electrolytic cavity 2 are improved; the boss 12 and the ring-shaped frame 14 can be regarded as the counterweight of the filter screen 8, so that the filter screen 8 can stably sink to the bottom of the nickel liquor after aeration is completed, so as to perform the next round of sludge separation.

[0056] The sludge discharge port 4 communicates with the sludge cavity 15 in the sludge collecting tank 9, and the sludge cavity 15 is connected to the sludge discharge pipe 16, so as to guide the sludge out for subsequent treatment.

[0057] The secondary purification device 10 is a reverse osmosis device, the liquid discharge structure includes an inner channel 17 and a liquid discharge port 18, the secondary purification device 10 is connected to the liquid discharge port 18 through a pipe fitting, the liquid discharge port 18 communicates with the electrolytic cavity 2 through the inclined inner channel 17, and the bottom of the electrolytic tank 1 is provided with a plurality of elevated feet 19 to reduce the influence of the outside on the electrolytic tank 1 and improve the stability of the electrolysis operation. The reverse osmosis device is a prior art, which is provided with an RO membrane, and by pressurizing the water inlet side of the RO membrane, impurities are intercepted and clean water flows out of the reverse osmosis device, thereby achieving secondary purification.

[0058] A surface treatment line external nickel liquor centralized treatment device corresponding processing method, comprising the following steps:

[0059] S1, the nickel liquor to be treated is injected into the electrolytic cavity 2 through the liquid inlet 3, the air blower 7 aerates the nickel liquor, the filter screen 8 is lifted, the impurities in the nickel liquor are captured, pushed up and discharged into the sludge collecting tank 9 through the sludge discharge port 4, and the impurities are filtered out before electrolysis and the nickel liquor is stirred, so as to ensure the electrolysis efficiency of the subsequent nickel liquor;

[0060] S2, the electrolysis equipment 5 runs, electrolytic treatment is carried out to the nickel liquor through the electrode 6, during the period, the electrolysis equipment 5, the air blower 7 is alternately interval type operation (namely one equipment runs while another equipment does not run, avoid the water body flowing when synchronous operation influences electrolysis quality, sludge generation and causes electrolysis length, energy consumption to improve, prevent sludge from being generated at the bottom of filter screen 8 when filter screen 8 rises and cause subsequent separation to be unable to be carried out), carry out the batched export of sludge and the stirring of nickel liquor during electrolysis process, thereby realize the staggered performance of electrolysis and sludge cleaning, improve the cleaning efficiency of sludge produced by electrolysis and further improve the electrolysis efficiency, save the sludge cleaning process after electrolysis, improve the overall operation efficiency of electrolysis process, reduce the operation length;

[0061] S3, after electrolysis, the treated water is discharged from the liquid discharge structure into the secondary purification equipment 10, and secondary purification treatment is carried out, the secondary purification of the water after electrolysis is carried out based on reverse osmosis technology, and the treatment quality is improved.

[0062] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art in the technical range disclosed by the present application, according to the technical scheme and the inventive concept of the present application, equivalent replacement or change, should be covered in the protection scope of the present application.

Claims

1. A centralized treatment device for nickel solution outside the surface treatment line, characterized in that: include: An electrolytic tank is provided with an electrolytic chamber therein, a liquid inlet connected to the electrolytic chamber is provided on the electrolytic tank, and a mud discharge port extends outward from the top of the electrolytic chamber; an electrolysis device, which is mounted on the electrolysis tank, and the electrodes on the electrolysis device extend into the electrolysis chamber; a blower, arranged at the bottom of the electrolysis chamber; a filter screen covering a horizontal cross-section of the electrolysis chamber, with its edge tightly attached to and slidably connected to the side wall of the electrolysis chamber, and a plurality of flow holes provided on the filter screen, through which the electrode passes; a sludge collection tank, which is assembled on the electrolysis tank and connected to the sludge discharge port; Secondary purification equipment is connected to the drainage structure of the electrolytic tank.

2. The device for centralized treatment of nickel solution outside the surface treatment line according to claim 1, characterized in that: Several groups of mud discharge ports and sludge collecting tanks are respectively arranged around the electrolysis tank, and the liquid inlet is located above the mud discharge ports.

3. The device for centralized treatment of nickel solution outside the surface treatment line according to claim 1, characterized in that: A slope extending downward is formed from the inner end to the outer end of the mud discharge port.

4. The device for centralized treatment of nickel solution outside the surface treatment line according to claim 1, characterized in that: The bottom of the electrode is positioned on the bottom surface of the electrolysis chamber through a base with the same cross-sectional size.

5. The device for centralized treatment of nickel solution outside the surface treatment line according to claim 1, characterized in that: A plurality of blowers are respectively arranged on the bottom surface and the bottom of the side surfaces of the electrolysis chamber.

6. The device for centralized treatment of nickel solution outside the surface treatment line according to claim 1, characterized in that: A boss is provided on the central bottom surface of the filter screen, and the distribution density of the flow holes gradually increases from the center to the edge of the filter screen.

7. The device for centralized treatment of nickel solution outside the surface treatment line according to claim 1, characterized in that: A vertical guide rail is provided on the side of the electrolysis chamber, and the edge of the filter screen is connected to the annular frame. The annular frame is tightly fitted to the four side walls of the electrolysis chamber and is slidably connected to the vertical guide rail through the outer notch.

8. The device for centralized treatment of nickel solution outside the surface treatment line according to claim 1, characterized in that: The mud discharge port is communicated with the mud chamber in the mud collecting tank, and the mud chamber is connected to the mud discharge pipe.

9. The device for centralized treatment of nickel solution outside the surface treatment line according to claim 1, characterized in that: The secondary purification equipment is a reverse osmosis equipment. The drainage structure includes an inner channel and a drainage port. The secondary purification equipment is connected to the drainage port through a pipe. The drainage port is connected to the electrolysis chamber through the inclined inner channel. Several elevated legs are provided at the bottom of the electrolysis tank.

10. The treatment method corresponding to the centralized treatment device for nickel solution outside the surface treatment line according to claim 1, characterized in that: The following steps are involved: S1, injecting the nickel solution to be treated into the electrolysis chamber through the liquid inlet, and the blower aerating the nickel solution so that the filter is lifted up, and impurities in the nickel solution are captured, pushed up, and discharged into the sludge collection tank through the mud discharge port, thereby filtering out impurities before electrolysis and stirring the nickel solution; S2, the electrolysis equipment is operated to electrolyze the nickel solution through the electrodes. During this period, the electrolysis equipment and the blower are operated alternately and intermittently to discharge the sludge in batches and stir the nickel solution during the electrolysis process; S3. After the electrolysis is completed, the treated water is discharged from the drainage structure into the secondary purification equipment for secondary purification treatment.

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