Cobalt scandium zirconium oxide production wastewater treatment device

Abstract

The utility model relates to the technical field of wastewater treatment, and particularly discloses a cobalt scandium zirconium oxide production wastewater treatment device which comprises a first stirring tank, a first feeder, a filter press, an ammonia gas treatment mechanism and a crystallization mechanism, the first stirring tank is provided with a wastewater inlet, a feeding inlet, a material outlet and a gas outlet; a wastewater inlet of the first stirring tank is used for wastewater to enter; the first feeder is a caustic soda flake feeder; the first feeder is connected with a feeding inlet of the first stirring tank and is used for feeding caustic soda flakes into the first stirring tank; a material outlet of the first stirring tank is connected with a filter press; a gas outlet of the first stirring tank is connected with an ammonia gas treatment mechanism; a filtrate outlet of the filter press is connected with the crystallization mechanism. According to the scheme, the first feeder can add caustic soda flakes into the first stirring tank, so that the wastewater in the first stirring tank generates precipitates and ammonia gas, other chemical reagents for reaction do not need to be added in the treatment process, and the treatment process of the cobalt oxide scandium zirconium production wastewater is effectively simplified.

Description

Technical Field

[0001] This application relates to the technical field of wastewater treatment, and in particular to a wastewater treatment device for the production of scandium zirconium cobalt oxide. Background Art

[0002] In the process of treating the wastewater produced in the production of scandium zirconium cobalt oxide, it is necessary to treat sodium sulfate and ammonium sulfate in the wastewater. The existing treatment method generally involves adding chemical agents to cause the wastewater to form a precipitate. For example, adding magnesium salts and phosphates to the wastewater to react ammonium ions with magnesium ions and phosphate ions to form magnesium ammonium phosphate ( ) precipitate, thereby removing ammonium ions, and then treating the filtered filtrate separately.

[0003] However, since there are also other heavy metal ions such as nickel, cobalt, and copper in the wastewater, other chemical agents need to be added, making the treatment process relatively cumbersome. Utility Model Content

[0004] In view of this, the purpose of this application is to provide a wastewater treatment device for the production of scandium zirconium cobalt oxide, which is used to simplify the treatment process of the wastewater produced in the production of scandium zirconium cobalt oxide.

[0005] To achieve the above technical purpose, this application provides a wastewater treatment device for the production of scandium zirconium cobalt oxide, including: a first stirring tank, a first feeder, a filter press, an ammonia treatment mechanism, and a crystallization mechanism;

[0006] The first stirring tank is provided with a wastewater inlet, a feeding inlet, a material outlet, and a gas outlet;

[0007] The wastewater inlet of the first stirring tank is used for the wastewater to enter;

[0008] The first feeder is a caustic soda feeder;

[0009] The first feeder is connected to the feeding inlet of the first stirring tank and is used to feed caustic soda into the first stirring tank;

[0010] The material outlet of the first stirring tank is connected to the filter press;

[0011] The gas outlet of the first stirring tank is connected to the ammonia treatment mechanism;

[0012] The filtrate outlet of the filter press is connected to the crystallization mechanism.

[0013] Further, it further includes: a second stirring tank and a second feeder;

[0014] The second stirring tank is provided with a material inlet, a feeding inlet, a material outlet, and a gas outlet;

[0015] The material inlet of the second stirring tank is connected to the filtrate outlet of the filter press;

[0016] The material outlet of the second stirring tank is connected to the crystallization mechanism;

[0017] The gas outlet of the second stirring tank is connected to the ammonia treatment mechanism;

[0018] The second feeder is a caustic soda feeder;

[0019] The second feeder is connected to the feeding inlet of the second stirring tank for feeding caustic soda into the second feeder.

[0020] Further, the first feeder includes a first outlet and a second outlet;

[0021] The first outlet is used to feed caustic soda into the feeding inlet of the first stirring tank;

[0022] The second outlet is used to feed PAM into the feeding inlet of the first stirring tank.

[0023] Further, the second feeder includes a third outlet and a fourth outlet;

[0024] The third outlet is used to feed caustic soda into the feeding inlet of the second stirring tank;

[0025] The fourth outlet is used to feed PAM into the feeding inlet of the second stirring tank.

[0026] Further, the crystallization mechanism is an MVR mechanism.

[0027] Further, the crystallization mechanism is connected with a distilled water return pipe.

[0028] Further, the ammonia treatment mechanism is an ammonia spray tower.

[0029] Further, it further includes a waste water pump and a waste water tank;

[0030] The waste water tank is connected to the waste water inlet of the first stirring tank through the waste water pump.

[0031] As can be seen from the above technical solution, the present application provides a device for treating wastewater from the production of cobalt scandium zirconium oxide, including: a first stirring tank, a first feeder, a filter press, an ammonia treatment mechanism, and a crystallization mechanism; the first stirring tank is provided with a wastewater inlet, a feeding inlet, a material outlet, and a gas outlet; the wastewater inlet of the first stirring tank is used for supplying wastewater to enter; the first feeder is a caustic soda feeder; the first feeder is connected to the feeding inlet of the first stirring tank for feeding caustic soda into the first stirring tank; the material outlet of the first stirring tank is connected to the filter press; the gas outlet of the first stirring tank is connected to the ammonia treatment mechanism; the filtrate outlet of the filter press is connected to the crystallization mechanism.

[0032] In this solution, the first feeder can add caustic soda into the first stirring tank, so that the wastewater in the first stirring tank generates precipitation and ammonia. After that, the precipitation can be pressed out by the filter press, and the ammonia can enter the ammonia treatment mechanism for treatment. During the treatment process, no other chemical reagents for reaction need to be added, effectively simplifying the treatment process of the wastewater from the production of cobalt scandium zirconium oxide. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0034] Figure 1 It is a wireframe structure schematic diagram of a device for treating wastewater from the production of cobalt scandium zirconium oxide provided by an embodiment of the present application;

[0035] In the figure: 10, the first stirring tank; 20, the first feeder; 30, the filter press; 40, the ammonia treatment mechanism; 41, the ammonia water reuse pipe; 42, the ammonia reuse pipe; 50, the crystallization mechanism; 51. the distilled water return pipe; 60, the second stirring tank; 70, the second feeder; 81, the wastewater pump; 82, the second pump; 83, the third pump; 84, the fourth pump; 90, the wastewater tank. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0036] The following will clearly and completely describe the technical solutions of the embodiments of the present application with reference to the drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. Based on the embodiments in the specification of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope claimed by the present application.

[0037] In the description of the embodiments of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the embodiments of the present application. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0038] In the description of the embodiments of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a replaceable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium. It can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific situations.

[0039] Please refer to Figure 1 , a cobalt scandium zirconium oxide production wastewater treatment device provided in the embodiments of the present application, includes: a first stirring tank 10, a first feeder 20, a filter press 30, an ammonia treatment mechanism 40, and a crystallization mechanism 50.

[0040] The first stirring tank 10 is provided with a wastewater inlet, a feeding inlet, a material outlet, and a gas outlet; the wastewater inlet of the first stirring tank 10 is used for wastewater to enter; the first feeder 20 is a caustic soda feeder; the first feeder 20 is connected to the feeding inlet of the first stirring tank 10 for feeding caustic soda into the first stirring tank 10; the material outlet of the first stirring tank 10 is connected to the filter press 30; the gas outlet of the first stirring tank 10 is connected to the ammonia treatment mechanism 40; the filtrate outlet of the filter press 30 is connected to the crystallization mechanism 50.

[0041] Among them, the chemical name of caustic soda is sodium hydroxide (NaOH), which is called caustic soda because it usually exists in the form of flaky solids. The cobalt scandium zirconium oxide production wastewater enters the first stirring tank 10 through the wastewater inlet of the first stirring tank 10; the cobalt scandium zirconium oxide production wastewater contains Na2So4, (NH4)2So4, , , and other ions. After adding caustic soda to the wastewater, adding caustic soda (sodium hydroxide) can cause ammonium sulfate to react to form sodium sulfate and ammonia. The chemical equation of the reaction is as follows:

[0042] .

[0043] In this reaction, the hydroxide ions in sodium hydroxide combine with the ammonium ions in ammonium sulfate to form ammonia and water, and the sulfate ions combine with sodium ions to form sodium sulfate. At the same time, nickel ions, cobalt ions, and copper ions react with caustic soda to form precipitates of cobalt hydroxide, nickel hydroxide, and copper hydroxide. Ammonia is discharged through the gas outlet of the first stirring tank 10 to the ammonia treatment mechanism 40 for ammonia treatment; the precipitate and solution are discharged through the material outlet of the first stirring tank 10 to a filter press for pressure filtration, so that the formed cobalt hydroxide, nickel hydroxide, and copper hydroxide form filter cakes and are recovered, and the filtrate of sodium sulfate after pressure filtration enters the crystallization mechanism 50 to form crystals.

[0044] As can be seen from the above, in this solution, the ammonia treatment mechanism 40 and the crystallization mechanism 50 are integrated into the device, so as to simultaneously have the functions of ammonia treatment and filtrate crystallization; in the process of treating the production wastewater of scandium zirconium cobalt oxide, no other reaction reagents need to be added except caustic soda, which can simplify the treatment process and treatment effect of the production wastewater of scandium zirconium cobalt oxide.

[0045] In a more specific embodiment, the device further includes: a second stirring tank 60 and a second feeder 70; the second stirring tank 60 is provided with a material inlet, a feeding inlet, a material outlet, and a gas outlet; the material inlet of the second stirring tank 60 is connected to the filtrate outlet of the filter press 30; the material outlet of the second stirring tank 60 is connected to the crystallization mechanism 50; the gas outlet of the second stirring tank 60 is connected to the ammonia treatment mechanism 40; the second feeder 70 is a caustic soda feeder; the second feeder 70 is connected to the feeding inlet of the second stirring tank 60 for feeding caustic soda into the second stirring tank 60.

[0046] In practical applications, there may still be some ammonium sulfate in the filtrate after stirring and reacting in the first stirring tank 10. Therefore, after pressure filtration by the filter press 30, the filtrate of sodium sulfate and ammonium sulfate after pressure filtration enters the second stirring tank 60. Then, caustic soda is added into the second stirring tank 60 through the second feeder 70, so that the wastewater in the second stirring tank 60 further generates sodium sulfate and ammonia. The ammonia enters the ammonia treatment mechanism 40, and the remaining solution enters the crystallization mechanism 50 to form crystals as by-product salts.

[0047] As an implementation method, the first feeder 20 includes a first outlet and a second outlet; the first outlet is used to feed caustic soda into the feeding inlet of the first stirring tank 10; the second outlet is used to feed PAM into the feeding inlet of the first stirring tank 10.

[0048] That is, the first feeder 20 can not only feed caustic soda, but also feed PAM into the first stirring tank 10.

[0049] PAM is the English abbreviation of polyacrylamide. Generally, it is a white powder or granular solid, which has good water solubility and can quickly dissolve in water to form a viscous solution. The active groups on the PAM molecular chain can adsorb suspended solids and colloidal particles in the wastewater. At the same time, the molecular chain forms a bridge between the particles, connecting the particles together to form larger flocs, which helps the heavy metal ions to form precipitates for recovery.

[0050] In the embodiment provided by this application, the first feeder 20 can simultaneously feed caustic soda and PAM; since most of the heavy metal ions in the wastewater have been removed through pressure filtration, the second feeder 70 can only feed caustic soda.

[0051] As a further improvement, in another embodiment, the second feeder 70 includes a third outlet and a fourth outlet; the third outlet is used to feed caustic soda into the feeding inlet of the second stirring tank 60; the fourth outlet is used to feed PAM into the feeding inlet of the second stirring tank 60.

[0052] That is, after removing the precipitate in the first stirring tank 10, the second stirring tank 60 can further remove the residual heavy metal ions through caustic soda and PAM, improving the treatment effect on the wastewater.

[0053] As an implementation manner, the crystallization mechanism 50 is an MVR mechanism. The crystallization mechanism 50 is connected with a distilled water return pipe 51, and can recover the distilled water through the distilled water return pipe 51 while the MVR mechanism recovers the crystals.

[0054] As an implementation manner, the ammonia treatment mechanism 40 is an ammonia spray tower. The ammonia spray tower is connected with an ammonia water reuse pipe 41 and an ammonia reuse pipe 42, and can separate and recover ammonia water and ammonia. The ammonia treatment mechanism 40 and the ammonia water reuse pipe 41 are connected through a fourth pump 84.

[0055] Further, it also includes a wastewater pump 81 and a wastewater tank 90; the wastewater tank 90 is connected to the wastewater inlet of the first stirring tank 10 through the wastewater pump 81.

[0056] The wastewater tank 90 is used to store wastewater; when the wastewater pump 81 is started, it is used to suck the wastewater in the wastewater tank 90 into the first stirring tank 10. The first stirring tank 10 and the filter press 30 are connected through a second pump 82; the second stirring tank 60 and the crystallization mechanism 50 are connected through a third pump 83.

[0057] On-off valves are provided at the outlets and inlets of the wastewater pump 81, the second pump 82 and the third pump 83, which is convenient for the disassembly and maintenance of the wastewater pump 81, the second pump 82 and the third pump 83.

[0058] The above are the preferred embodiments of the present application and are not intended to limit the present utility model. Although the present application has been described in detail with reference to the examples, those skilled in the art can still modify the technical solutions described in the foregoing examples or perform equivalent replacements for some of the technical features. However, any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A cobalt-scandium-zirconium oxide production wastewater treatment device, characterized in that: Comprising: A first stirring tank (10), a first feeder (20), a filter press (30), an ammonia treatment mechanism (40) and a crystallization mechanism (50); The first stirring tank (10) is provided with a waste water inlet, a feeding inlet, a material outlet and a gas outlet; The waste water inlet of the first stirring tank (10) is used for allowing waste water to enter; The first feeder (20) is a caustic soda feeder; The first feeder (20) is connected to the feeding inlet of the first stirring tank (10) for feeding caustic soda into the first stirring tank (10); The material outlet of the first stirring tank (10) is connected to the filter press (30); The gas outlet of the first stirring tank (10) is connected to the ammonia treatment mechanism (40); The filtrate outlet of the filter press (30) is connected to the crystallization mechanism (50).

2. The cobalt scandium zirconium oxide production wastewater treatment device according to claim 1, wherein, Further comprising: A second stirring tank (60) and a second feeder (70); The second stirring tank (60) is provided with a material inlet, a feeding inlet, a material outlet and a gas outlet; The material inlet of the second stirring tank (60) is connected to the filtrate outlet of the filter press (30); The material outlet of the second stirring tank (60) is connected to the crystallization mechanism (50); The gas outlet of the second stirring tank (60) is connected to the ammonia treatment mechanism (40); The second feeder (70) is a caustic soda feeder; The second feeder (70) is connected to the feeding inlet of the second stirring tank (60) for feeding caustic soda into the second stirring tank (70).

3. The cobalt scandium zirconium oxide production wastewater treatment device according to claim 1, wherein The first feeder (20) includes a first outlet and a second outlet; The first outlet is used for feeding caustic soda into the feeding inlet of the first stirring tank (10); The second outlet is used for feeding PAM into the feeding inlet of the first stirring tank (10).

4. The cobalt scandium zirconium oxide production wastewater treatment device according to claim 2, characterized in that, The second feeder (70) includes a third outlet and a fourth outlet; The third outlet is used for feeding caustic soda into the feeding inlet of the second stirring tank (60); The fourth outlet is used for feeding PAM into the feeding inlet of the second stirring tank (60).

5. The cobalt scandium zirconium oxide production wastewater treatment device according to claim 1, characterized in that, The crystallization mechanism (50) is an MVR mechanism.

6. The cobalt scandium zirconium oxide production wastewater treatment device according to claim 5, characterized in that, The crystallization mechanism (50) is connected with a distilled water return pipe (51).

7. The cobalt-scandium-zirconium oxide production wastewater treatment device according to claim 1, characterized in that: The ammonia treatment mechanism (40) is an ammonia spray tower.

8. The cobalt oxide scandium zirconium production wastewater treatment device according to claim 1, wherein, Further comprising a waste water pump (81) and a waste water tank (90); The waste water tank (90) is connected to the waste water inlet of the first stirring tank (10) through the waste water pump (81).

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