Zinc-nickel alloy electroplating wastewater zero discharge device

Abstract

The utility model discloses a zinc-nickel alloy electroplating wastewater zero-discharge device which comprises a wastewater barrel and is characterized in that a plurality of air holes are formed in the bottom of the wastewater barrel, a pH detector and a pH controller are fixedly mounted at the edge of the wastewater barrel, a pH detection head is connected below the pH detector, an air pipe and a first water pipe are fixedly connected to the bottom of the wastewater barrel, and a second water pipe is connected to the bottom of the wastewater barrel. The other side of the air pipe is connected with an air pump, one side of the first water pipe is connected with a water pump, the upper portion of the water pump is connected with a second water pipe, the other side of the second water pipe is connected with a settling barrel, and one side of the settling barrel is provided with a fixing support fixedly connected to the ground. The device solves the problem that the current wastewater treatment method is single and not thorough in purification.

Description

Technical Field

[0001] The utility model relates to the technical field of electroplating wastewater treatment, in particular to a zinc-nickel alloy electroplating wastewater zero-discharge device. Background Art

[0002] Electroplating is a common metal surface treatment method. It is a process that uses the principle of electrolysis to plate a thin layer of other metals or alloys on certain metal surfaces. It uses electrolysis to make a layer of metal film adhere to the surface of metal or other material parts, thereby preventing metal oxidation (such as rust), improving wear resistance, conductivity, reflectivity, corrosion resistance (copper sulfate, etc.) and enhancing aesthetics. However, at the same time, the electroplating process will produce wastewater containing a large amount of electroplating solution.

[0003] my country's electroplating industry emits 4 to 5 billion cubic meters of 3 Wastewater contains a large amount of hydrochloric acid and heavy metal ions such as zinc, copper, nickel, and organic brighteners, which are highly toxic. Some of them also contain highly toxic substances that are carcinogenic, teratogenic, and mutagenic, which are extremely harmful to humans. Therefore, electroplating wastewater must be carefully recycled and treated to eliminate or reduce its pollution to the environment.

[0004] However, the existing zinc-nickel alloy electroplating wastewater treatment device has a single wastewater treatment method, and a small amount of heavy metal ions still remain in the water after the treatment. Therefore, it is necessary to design a zinc-nickel alloy electroplating wastewater zero discharge device. Utility Model Content

[0005] The purpose of the utility model is to provide a zinc-nickel alloy electroplating wastewater zero discharge device in view of the existing technical defects, so as to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a zinc-nickel alloy electroplating wastewater zero discharge device, including a wastewater bucket, characterized in that: a plurality of air holes are opened at the bottom of the wastewater bucket, a pH detector and a pH controller are fixedly installed on the edge of the wastewater bucket, a pH detection head is connected below the pH detector, an air pipe and a No. 1 water pipe are fixedly connected to the bottom of the wastewater bucket, and an air pump is connected to the other side of the air pipe.

[0007] The utility model further illustrates that a water pump is connected to one side of the No. 1 water pipe, a No. 2 water pipe is connected above the water pump, a sedimentation barrel is connected to the other side of the No. 2 water pipe, a fixed bracket is provided on one side of the sedimentation barrel and is fixedly connected to the ground, a motor is installed on the fixed bracket, a rotating shaft is connected below the motor, a plurality of sets of fan blades are fixedly connected to the rotating shaft, and the rotating shaft is located at the exact center inside the sedimentation barrel.

[0008] The utility model further illustrates that the bottom of the waste water barrel is a hollow structure, and the air hole and the air pipe are connected through the hollow structure.

[0009] The utility model further illustrates that a No. 1 reagent adder and a No. 2 reagent adder are fixedly installed on the edge of the sedimentation barrel.

[0010] The utility model further illustrates that the bottom of the sedimentation barrel is an inclined surface, a residue collection pipe is welded on a low side of the bottom of the sedimentation barrel, and a water outlet pipe is welded on a high side of the bottom of the sedimentation barrel.

[0011] The utility model further describes that activated carbon is placed inside the water outlet pipe.

[0012] Compared with the prior art, the utility model has the following beneficial effects: multiple steps of wastewater treatment are more thorough

[0013] The utility model,

[0014] (1) Use multiple treatment methods such as flotation, sedimentation, and adsorption to achieve more thorough purification step by step.

[0015] (2) The inclined bottom of the sedimentation barrel makes it easy to separate and collect the precipitated impurities, and the filtered heavy metals can be recycled and reused.

[0016] (3) The activated carbon in the water outlet pipe is easy to replace and can be replaced in time after the activated carbon is saturated with adsorption, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a cross-sectional schematic diagram of the sedimentation barrel of the utility model;

[0020] Figure 3 It is a schematic cross-sectional view of a wastewater barrel of the utility model;

[0021] In the figure: 1. Waste water bucket; 2. Air hole; 3. pH detection head; 4. pH detector; 5. Air pump; 6. Air pipe; 7. pH controller; 8. No. 1 water pipe; 9. Water pump; 10. No. 2 water pipe; 11. Sedimentation bucket; 12. Residue collection pipe; 13. No. 1 reagent adder; 14. Motor; 15. Fixed bracket; 16. Rotating shaft; 17. No. 2 reagent adder; 18. Water outlet pipe; 19. Fan blades; 20. Activated carbon. DETAILED DESCRIPTION

[0022] The following is a further non-limiting detailed description of the technical solution of the utility model in conjunction with the preferred embodiments and the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-3 The utility model provides a technical solution: a zinc-nickel alloy electroplating wastewater zero discharge device, comprising a wastewater bucket 1, a plurality of air holes 2 are opened at the bottom of the wastewater bucket 1, a pH detector 4 and a pH controller 7 are fixedly installed on the edge of the wastewater bucket 1, a pH detection head 3 is connected below the pH detector 4, an air pipe 6 and a No. 1 water pipe 8 are fixedly connected to the bottom of the wastewater bucket 1, and an air pump 5 is connected to the other side of the air pipe 6;

[0024] The bottom of the wastewater bucket 1 is a hollow structure, and the air hole 2 and the air pipe 6 are connected through the hollow structure. When the air pump 5 is working, the gas is discharged from the air hole 2 through the air pipe 6 and generates tiny bubbles. The bubbles adhere to the tiny suspended matter and float to the water surface, thereby cleaning the suspended matter, emulsified oil, surfactant and other impurities;

[0025] A water pump 9 is connected to one side of the No. 1 water pipe 8, a No. 2 water pipe 10 is connected above the water pump 9, a sedimentation barrel 11 is connected to the other side of the No. 2 water pipe 10, a fixed bracket 15 is fixedly connected to the ground on one side of the sedimentation barrel 11, a motor 14 is installed on the fixed bracket 15, a rotating shaft 16 is connected below the motor 14, a plurality of fan blades 19 are fixedly connected to the rotating shaft 16, and the rotating shaft 16 is located at the inner center of the sedimentation barrel 11;

[0026] A first reagent adder 13 and a second reagent adder 17 are fixedly installed on the edge of the sedimentation barrel 11, and reagents such as coagulant (PAC) and flocculant (PAM) are added to the sedimentation barrel 11 through these two adders;

[0027] The bottom of the sedimentation barrel 11 is an inclined surface, a residue collection pipe 12 is welded to the lower side of the bottom of the sedimentation barrel 11, and a water outlet pipe 18 is welded to the higher side of the bottom of the sedimentation barrel 11;

[0028] Activated carbon 20 is placed inside the outlet pipe 18 to adsorb and purify the remaining trace heavy metal ions and other impurities in the water when the wastewater is discharged after the precipitation is completed;

[0029] Working principle:

[0030] The air pump 5 is turned on, and the gas is continuously introduced into the waste water bucket 1 through the air pipe 6 and the air hole 2, and then the zinc-nickel alloy electroplating wastewater is poured into the waste water bucket 1, and the impurities such as suspended matter, emulsified oil, and surfactant are floated to the water surface by air flotation to form foam and scum, thereby completing the preliminary purification;

[0031] The pH controller 7 is used to adjust the pH value of the zinc-nickel alloy electroplating wastewater in the wastewater bucket 1. At the same time, the pH detector 4 monitors the pH value of the wastewater through the pH detection head 3. When the pH value is adjusted to 9-10, the adjustment is stopped. Then, the water pump 9 is turned on to pump the wastewater from the bottom of the wastewater bucket 1 to the sedimentation bucket 11 through the No. 1 water pipe 8 and the No. 2 water pipe 10. After the pumping is completed, a heavy metal capture agent is added to the wastewater through the No. 1 reagent adder 13. At the same time, the motor 14 is turned on to drive the fan blade 19 to stir to accelerate the reaction between the heavy metal capture agent and the zinc, nickel and other ions in the wastewater. After a certain reaction time, a coagulant (PAC) and a flocculant (PAM) are added to the wastewater through the No. 2 reagent adder 17 and the stirring is continued to accelerate the reagent reaction so that the impurities in the wastewater are condensed into particles and floccules.

[0032] After the reagent and the wastewater have fully reacted, the motor 14 is turned off and static sedimentation is started to allow the particles and flocs in the wastewater to settle to the low position of the inclined bottom of the sedimentation barrel 11. After standing for a period of time and the sedimentation is completed, the purified wastewater can be discharged through the outlet pipe 18. The activated carbon 20 in the outlet pipe 18 will perform the final adsorption and cleaning of the trace impurities remaining in the wastewater to ensure that there is no risk of error. After the wastewater is discharged, the impurities containing zinc and nickel are discharged through the residue collection pipe 12 and recovered.

[0033] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0034] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit them. Although the utility model is described in detail with reference to the above embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features can be replaced by equivalents, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A zinc-nickel alloy electroplating wastewater zero discharge device, comprising a wastewater bucket (1), characterized in that: The wastewater bucket (1) has a plurality of air holes (2) at the bottom, a pH detector (4) and a pH controller (7) are fixedly mounted on the edge of the wastewater bucket (1), a pH detection head (3) is connected below the pH detector (4), an air pipe (6) and a No. 1 water pipe (8) are fixedly connected to the bottom of the wastewater bucket (1), and an air pump (5) is connected to the other side of the air pipe (6); A water pump (9) is connected to one side of the first water pipe (8), a second water pipe (10) is connected above the water pump (9), a sedimentation barrel (11) is connected to the other side of the second water pipe (10), a fixed bracket (15) is fixedly connected to the ground on one side of the sedimentation barrel (11), a motor (14) is mounted on the fixed bracket (15), a rotating shaft (16) is connected below the motor (14), a plurality of fan blades (19) are fixedly connected to the rotating shaft (16), and the rotating shaft (16) is located at the inner center of the sedimentation barrel (11); The bottom of the sedimentation barrel (11) is an inclined surface, a residue collection pipe (12) is welded on a lower side of the bottom of the sedimentation barrel (11), and a water outlet pipe (18) is welded on a higher side of the bottom of the sedimentation barrel (11); Activated carbon (20) is placed inside the water outlet pipe (18).

2. A zinc-nickel alloy electroplating wastewater zero discharge device according to claim 1, characterized in that: The bottom of the waste water bucket (1) is a hollow structure, and the air hole (2) and the air pipe (6) are connected via the hollow structure.

3. A zinc-nickel alloy electroplating wastewater zero discharge device according to claim 2, characterized in that: A first reagent adder (13) and a second reagent adder (17) are fixedly mounted on the edge of the precipitation barrel (11).

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