CN216513182U

CN216513182U - Zinc-nickel alloy wastewater aeration treatment system

Info

Publication number: CN216513182U
Application number: CN202122228062.6U
Authority: CN
Inventors: 苏伟劲
Original assignee: Dongguan Haofeng Industrial Sewage Treatment Co ltd
Current assignee: Dongguan Haofeng Industrial Sewage Treatment Co ltd
Priority date: 2021-09-15
Filing date: 2021-09-15
Publication date: 2022-05-13
Anticipated expiration: 2031-09-15

Abstract

The utility model relates to the technical field of wastewater treatment, in particular to a zinc-nickel alloy wastewater aeration treatment system which comprises a reaction tank, wherein a first pH adjusting unit, an oxidation reaction unit, a second pH adjusting unit, a precipitation unit and an ion exchange unit which are communicated with each other are sequentially arranged in the reaction tank, the first pH adjusting unit and the first pH adjusting unit are respectively provided with a pH adjusting reagent adding component, a pH value on-line monitor and a micropore aeration component, the oxidation reaction unit and the precipitation unit are respectively provided with a medicament adding component, a sand filtering component is arranged between the precipitation unit and the ion exchange unit, the zinc-nickel alloy wastewater aeration treatment system is simple in structure and reasonable in design, after the pH is firstly adjusted, the oxidation treatment is carried out, after the pH is adjusted again, the precipitation treatment is carried out, the solid-liquid separation removal is carried out on the zinc-nickel metal precipitate, then the supernatant is filtered, residual zinc and nickel ions are removed through ion exchange adsorption, so that the treatment effect of the zinc and nickel ions in the treated effluent is ensured.

Description

Zinc-nickel alloy wastewater aeration treatment system

Technical Field

The utility model relates to the technical field of wastewater treatment, in particular to a zinc-nickel alloy wastewater aeration treatment system.

Background

Alloy electroplating is a surface treatment technology which is rapidly developed in recent years, contains two or more than two metal coating layers, and has the characteristics of high hardness, high density, wear resistance, corrosion resistance, strong high temperature resistance, easy welding and attractive appearance compared with a single metal coating layer. The zinc-nickel alloy is widely applied in nearly 10 years, the corrosion resistance of an alloy coating is 7-10 times higher than that of a zinc coating, the appearance can be kept unchanged for 10 years, the hydrogen brittleness sensitivity is low, and the zinc-nickel alloy particularly shows excellent corrosion resistance in severe atmosphere and marine environment. The zinc and nickel have very different precipitation potentials due to their very different properties. In order to satisfy the stability and codeposition of zinc and nickel in the coating, a complexing agent and a coordination agent for adjusting the precipitation potential of two metal ions are generally required to be added, so that the equilibrium potential of the metal with the potential larger than that of the positive metal is shifted negatively, the equilibrium potential of the two metals with the potential difference is approximate, and the two metals are better codeposited.

The zinc-nickel alloy electroplating wastewater usually comes from the rinsing process and residual bath solution of a plated part, the existing treatment process of the zinc-nickel alloy electroplating wastewater generally adopts the steps of diluting with other water in large amount and then mixing and discharging, or independently adopts a heavy metal catching agent to treat and then mixing the treated wastewater into comprehensive water for unified treatment, because nickel is a pollutant, the discharge outlet of a workshop needs to reach the discharge standard, the problem cannot be solved fundamentally by adopting a large-water-amount dilution treatment mode, the subsequent treatment difficulty is increased, and the waste phenomenon also exists in the aspect of water resource utilization; the wastewater treated by the heavy metal catching agent can temporarily meet the discharge requirement, but the heavy metal complexing agent in the water is not removed, and when the wastewater enters the comprehensive water for unified treatment, the heavy metal complexing agent can be combined with the heavy metal in the comprehensive water again, so that the treatment difficulty of the comprehensive water is increased, and the treatment stability is reduced.

Therefore, there is a need to provide a new zinc-nickel alloy wastewater treatment system to better solve the above technical problems.

Disclosure of Invention

In order to solve the problems, the utility model provides a zinc-nickel alloy wastewater aeration treatment system which is simple in structure, reasonable in design and good in treatment effect.

The technical scheme adopted by the utility model is as follows:

the utility model provides a zinc-nickel alloy waste water aeration treatment system, includes the reaction tank, set gradually the first pH regulating element, oxidation reaction unit, second pH regulating element, precipitation unit and the ion exchange unit of mutual intercommunication in the reaction tank, first pH regulating element with first pH regulating element is equipped with pH adjusting agent respectively and adds subassembly, pH value on-line monitoring appearance and micropore aeration subassembly, the oxidation reaction unit with the precipitation unit is equipped with the medicament and adds the subassembly, the precipitation unit with be equipped with the sand between the ion exchange unit and strain the subassembly.

The technical scheme is further improved in that the medicament adding assembly comprises an automatic medicament feeder and a flowmeter.

The technical scheme is further improved in that the microporous aeration assembly comprises an air pump, an air pipeline, a pipeline support and a plurality of aeration pipes, the air pipeline is respectively connected with the pipeline support and the air pump, the aeration pipes are distributed at the periphery of the air pipeline at intervals, and a plurality of aeration heads are uniformly distributed at a plurality of intervals outside the aeration pipes.

The technical scheme is further improved in that one ends of the aeration pipes, which are far away from the end connected with the ventilation pipeline, are respectively connected with a buoyancy ball.

The further improvement of the technical scheme is that the central axis of the pipeline bracket is close to the central axis of the reaction tank.

The further improvement to the above technical scheme is that the sand filtration assembly is set as a sand filtration tank.

The sand filtration tank is further improved by being provided with a first bearing layer, a second bearing layer and a third bearing layer, wherein the first bearing layer, the second bearing layer and the third bearing layer are internally provided with a filter material layer respectively.

The technical proposal is further improved in that the first bearing layer, the second bearing layer and the third bearing layer are respectively made of cobblestones, and the filter material layer is made of quartz sand.

The further improvement of the technical scheme is that the thicknesses of the first supporting layer, the second supporting layer and the third supporting layer are respectively set to be 100-120 mm, and the thickness of the filter material layer is 700-900 mm.

The utility model has the following beneficial effects:

the utility model comprises a reaction tank, wherein a first pH adjusting unit, an oxidation reaction unit, a second pH adjusting unit, a precipitation unit and an ion exchange unit which are communicated with each other are sequentially arranged in the reaction tank, the first pH adjusting unit and the first pH adjusting unit are respectively provided with a pH adjusting reagent adding component, a pH value on-line monitor and a micropore aeration component, the oxidation reaction unit and the precipitation unit are provided with medicament adding components, a sand filtering component is arranged between the precipitation unit and the ion exchange unit, the device has simple structure and reasonable design, and is characterized in that after the pH is adjusted for the first time, oxidation treatment is carried out, then after the pH is adjusted again, precipitation treatment is carried out, the precipitate of zinc-nickel metal is removed by solid-liquid separation, and then filtering the supernatant, and removing the residual zinc and nickel ions through ion exchange adsorption so as to ensure the treatment effect of the zinc and nickel ions in the treated effluent.

Drawings

FIG. 1 is a schematic structural view of the processing principle of the present invention;

FIG. 2 is a schematic structural view of the present invention;

description of reference numerals: 1. the device comprises a reaction tank, 2, a first adjusting unit, 21, a pH adjusting reagent adding assembly, 22, a microporous aeration assembly, 221, an air pump, 222, an air pipeline, 223, an aeration pipe, 224, a buoyancy ball, 3, an oxidation reaction unit, 4, a second pH adjusting unit, 5, a precipitation unit, 6, an ion exchange unit, 7, a sand filtering assembly, a first supporting layer, 72, a second supporting layer, 73, a third supporting layer and 74, wherein the reaction tank is provided with a filter bed.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-2, the zinc-nickel alloy wastewater aeration treatment system of the embodiment includes a reaction tank 1, a first pH adjusting unit 2, an oxidation reaction unit 3, a second pH adjusting unit 4, a precipitation unit 5 and an ion exchange unit 6 which are communicated with each other are sequentially arranged in the reaction tank 1, the first pH adjusting unit 2 and the first pH adjusting unit 4 are respectively provided with a pH adjusting reagent adding component 21, a pH value on-line monitor and a microporous aeration component 22, the oxidation reaction unit 3 and the precipitation unit 5 are provided with a reagent adding component 31, a sand filter component 7 is arranged between the precipitation unit 5 and the ion exchange unit 6, the utility model has simple structure and reasonable design, and performs oxidation reaction treatment after first pH adjustment, then performs precipitation treatment after pH adjustment again, and performs solid-liquid separation and removal on zinc-nickel metal precipitates, then filtering the supernatant, removing residual zinc and nickel ions through ion exchange adsorption to ensure the treatment effect of the zinc and nickel ions in the treated effluent, specifically, in the treatment process, firstly, conveying the wastewater into a first pH adjusting unit 2 through an external conveying pump, adding acid to adjust the pH value of the wastewater, completely mixing acid liquor and the wastewater through aeration, testing the pH value to ensure that the pH value is between 3 and 5, then conveying the wastewater into an oxidation reaction unit 3, adding an oxidant to perform oxidation reaction, conveying the wastewater into a second pH adjusting unit 4 after reaction, adding alkali to adjust the pH value of the wastewater, completely mixing alkali liquor and the wastewater through aeration, testing the pH value to ensure that the pH value is between 11 and 13, then conveying the wastewater into a precipitation unit 5, adding a flocculating agent to remove zinc and nickel metals in a precipitation manner, and sequentially performing sand filtration and ion exchange adsorption treatment on the zinc and nickel ions remaining in the supernatant, so that the zinc-nickel ions are completely treated to ensure the treatment effect of the zinc-nickel ions in the treated effluent.

The medicament adding assembly 31 comprises an automatic medicament feeder and a flowmeter, the medicament adding control is more convenient by arranging the automatic medicament feeder, the added medicament amount can be calculated by arranging the flowmeter, and the medicament adding amount is effectively prevented.

The microporous aeration component 22 comprises an air pump 221, an aeration pipeline 222, a pipeline support and a plurality of aeration pipes 223, wherein the aeration pipeline 222 is respectively connected with the pipeline support and the air pump 221, the aeration pipes 223 are distributed at the periphery of the aeration pipeline 222 at intervals, a plurality of aeration heads are uniformly distributed at a plurality of intervals outside the aeration pipes 223, specifically, the aeration pipes 223 are far away from one end connected with the aeration pipeline 222 and are respectively connected with a buoyancy ball 224, and the central axis of the pipeline support is close to the central axis of the reaction tank 1.

The sand filtration assembly 7 is designed as a sand filtration tank, specifically, a first bearing layer 71, a second bearing layer 72 and a third bearing layer 73 are arranged in the sand filtration tank 7, a filter material layer 74 is respectively arranged in the first bearing layer 71, the second bearing layer 72 and the third bearing layer 73, the first bearing layer 71, the second bearing layer 72 and the third bearing layer 73 are respectively designed as cobblestones, the filter material layer 74 is made of quartz sand, the thicknesses of the first bearing layer 71, the second bearing layer 72 and the third bearing layer 73 are respectively set as 100 mm-120 mm, the thickness of the filter material layer 74 is 700 mm-900 mm, and by adopting the arrangement, the stability of filtration and adsorption of the sand filtration tank can be improved, sediment substances are prevented from entering a subsequent ion exchange treatment unit, and the treatment burden of the ion exchange treatment unit is increased.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The utility model provides a zinc-nickel alloy waste water aeration treatment system, includes the reaction tank, its characterized in that, set gradually first pH regulating element, oxidation reaction unit, second pH regulating element, precipitation unit and the ion exchange unit that communicate each other in the reaction tank, first pH regulating element with first pH regulating element is equipped with pH adjusting reagent respectively and adds subassembly, pH value on-line monitoring appearance and micropore aeration subassembly, the oxidation reaction unit with the precipitation unit is equipped with the medicament and adds the subassembly, the precipitation unit with be equipped with sand filtration subassembly between the ion exchange unit.

2. An aeration treatment system for zinc-nickel alloy wastewater according to claim 1, wherein said chemical adding assembly comprises an automatic chemical feeder and a flow meter.

3. The zinc-nickel alloy wastewater aeration treatment system according to claim 1, wherein the microporous aeration assembly comprises an air pump, an air vent pipeline, a pipeline support and a plurality of aeration pipes, the air vent pipeline is respectively connected with the pipeline support and the air pump, the aeration pipes are distributed at the periphery of the air vent pipeline at intervals, and a plurality of aeration heads are uniformly distributed at intervals outside the aeration pipes.

4. The system for aeration treatment of zinc-nickel alloy wastewater according to claim 3, wherein a plurality of said aeration pipes are connected with a buoyancy ball at the end away from the end connected with said ventilation pipeline.

5. An aeration treatment system for zinc-nickel alloy wastewater according to claim 3, wherein the central axis of the pipe support is arranged close to the central axis of the reaction tank.

6. An aeration treatment system for zinc-nickel alloy wastewater according to claim 1, wherein the sand filtration module is provided as a sand filtration tank.

7. An aeration treatment system for zinc-nickel alloy wastewater according to claim 6, characterized in that a first supporting layer, a second supporting layer and a third supporting layer are arranged in the sand filtering tank, and filter material layers are respectively arranged in the first supporting layer, the second supporting layer and the third supporting layer.

8. An aeration treatment system for zinc-nickel alloy wastewater according to claim 7, wherein said first supporting layer, said second supporting layer and said third supporting layer are made of cobblestones, respectively, and said filter material layer is made of quartz sand.

9. An aeration treatment system for zinc-nickel alloy wastewater according to claim 7, wherein the thicknesses of the first supporting layer, the second supporting layer and the third supporting layer are set to 100mm to 120mm, respectively, and the thickness of the filter material layer is set to 700mm to 900 mm.