Anodic oxidation sulfuric acid waste liquid treatment system

Abstract

The utility model discloses an anodic oxidation sulfuric acid waste liquid treatment system which is provided with an anodic oxidation tank, a tap water tank and a diffusion dialyzer, so that acid in anodic oxidation waste liquid is filtered through the diffusion dialyzer, the acidity in waste water is reduced, and the sewage treatment efficiency and the treatment cost are effectively reduced. Meanwhile, the concentration of the filtered sulfuric acid is increased through the heating kettle, then the sulfuric acid flows into the anodic oxidation tank again to be recycled, waste of materials is avoided, the acid using cost of an enterprise is reduced, water vapor generated in the heating kettle is discharged into the waste water tank through condensation of the condensing device, and the energy consumption is reduced. And the whole waste treatment and recovery process can be completed.

Description

Technical Field

[0001] The utility model relates to the field of waste liquid treatment technology, in particular to an anodic oxidation sulfuric acid waste liquid treatment system. Background Art

[0002] In the anodizing production process, sulfuric acid anodizing liquid has simple composition, stability, easy operation and low cost. As the aluminum ion concentration in the bath increases to a certain value (generally greater than 15g / L), the performance of the oxide film will be seriously affected and a new bath needs to be replaced, thus generating waste liquid. This waste liquid is a hazardous waste, which brings serious environmental problems and cost burdens to enterprises and has become a "bottleneck" for enterprise development. Most of the waste liquid generated in the existing oxidation process is discharged into a sewage treatment plant for treatment, which not only increases the cost of sewage, but also wastes the residual sulfuric acid in the waste liquid, resulting in high acid costs for enterprises; therefore, it is necessary to study a new technical solution to solve the above problems. Utility Model Content

[0003] In view of this, the present invention aims to address the deficiencies in the prior art, and its main purpose is to provide an anodizing sulfuric acid waste liquid treatment system, which can effectively solve the problems of high sewage cost, waste of resources and increased acid costs for enterprises in the existing anodizing sulfuric acid waste liquid treatment methods.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is to provide an anodizing sulfuric acid waste liquid treatment system, including a tap water tank, an anodizing tank, a diffusion dialyzer, a wastewater tank, a heating kettle and a condensing device; the output end of the tap water tank is connected to an input end of the diffusion dialyzer through a first pipe; the output end of the anodizing tank is connected to the other input end of the diffusion dialyzer through a second pipe; the wastewater tank is connected to the waste material output port of the diffusion dialyzer; the heating kettle is connected to the other output end of the diffusion dialyzer, and one output end of the heating kettle is connected to the wastewater tank through a third pipe, and the other output end of the heating kettle is connected to the input end of the anodizing tank through a fourth pipe; the condensing device is arranged on the third pipe and condenses the water vapor in the third pipe.

[0005] As a preferred solution, a first metering pump, a tap water filter and a first valve are sequentially arranged on the first pipeline; the first metering pump and the tap water filter are both connected to the first pipeline, and the first valve is arranged on the first pipeline and located beside the output end of the tap water filter.

[0006] As a preferred embodiment, the tap water filter is provided with an activated carbon adsorption layer and a nano-carbon fiber adsorption layer arranged at intervals, wherein the activated carbon adsorption layer and the nano-carbon fiber adsorption layer are both arranged in two layers, and a first exhaust pipe connected to the inside of the tap water filter is provided at the upper end of the tap water filter.

[0007] As a preferred solution, a second metering pump, an oxidation filter and a second valve are arranged on the second pipeline. The second metering pump and the oxidation filter are both connected to the second pipeline. The second valve is arranged on the second pipeline and is located beside the output end of the oxidation filter. A second exhaust pipeline connected to the interior of the oxidation filter is arranged at the upper end of the oxidation filter.

[0008] As a preferred solution, a plurality of anion exchange membranes arranged at intervals are provided in the diffusion dialyzer.

[0009] As a preferred embodiment, the condensing device includes a condenser, a condensation tower, a condensation tube and a first circulating water pump; the condenser is arranged on and connected to the third pipe, and the condensation tower is arranged beside the third pipe; the two ends of the condensation tube are respectively connected to the input end and the output end of the condensation tower, and the condensation tube extends inward into the condenser; the first circulating water pump is arranged on the condensation tube and connected to the condensation tube.

[0010] As a preferred solution, a first pump body is provided on the third pipeline, and the first pump body is located between the condensing device and the waste water tank.

[0011] As a preferred solution, a cooling device is provided on the fourth pipeline, and the cooling device includes a cooler, a cooling tower, a cooling pipe and a second circulating water pump; the cooler is provided on the fourth pipeline and is connected to the fourth pipeline; the cooling tower is provided beside the fourth pipeline, and the two ends of the cooling pipe are respectively connected to the input end and the output end of the cooling tower, the cooling pipe part extends into the cooler, and the part of the cooling pipe extending into the cooler is integrally formed with a bending portion; the second circulating water pump is provided on the cooling pipe and is connected to the cooling pipe.

[0012] As a preferred solution, a second pump body is provided on the fourth pipeline, and the second pump body is provided between the cooling device and the anodizing tank.

[0013] The beneficial effect of the utility model is that: by providing an anodizing tank, a tap water tank and a diffusion dialyzer, the acid in the anodizing waste liquid is filtered through the diffusion dialyzer to reduce the acidity in the waste water, thereby effectively reducing the sewage treatment efficiency and treatment cost; at the same time, the filtered sulfuric acid is increased in concentration through a heating kettle, and then re-flowed into the anodizing tank for recycling, thereby avoiding waste of materials and reducing the acid cost of the enterprise; and then the water vapor generated in the heating kettle is condensed and discharged into the waste water tank through a condensing device, thereby completing the entire waste treatment and recycling process. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a work flow chart of a preferred embodiment of the utility model.

[0015] Explanation of the accompanying drawings: 10, tap water tank; 11, first pipeline; 12, first metering pump; 13, tap water filter; 131, activated carbon adsorption layer; 132, nano-carbon fiber adsorption layer; 133, first exhaust pipeline; 14, first valve; 20, anodizing tank; 21, second pipeline; 22, second metering pump; 23, oxidation filter; 231, second exhaust pipeline; 24, second valve; 30, diffusion dialyzer; 31, anion ion exchange membrane; 40, wastewater tank; 50, heating kettle; 51, third pipeline; 52, fourth pipeline; 53, first pump body; 54, cooling device; 541, cooler; 542, cooling tower; 543, cooling pipe; 544, second circulating water pump; 545, bending part; 55, second pump body; 60, condensing device; 61, condenser; 62, condensing tower; 63, condensing pipe; 64, first circulating water pump. DETAILED DESCRIPTION

[0016] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are 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.

[0017] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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 cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0018] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0019] Please refer to Figure 1As shown, it shows the specific structure of a preferred embodiment of the utility model, which includes a tap water tank 10, an anodizing tank 20, a diffusion dialyzer 30, a waste water tank 40, a heating kettle 50 and a condensing device 60.

[0020] The output end of the tap water tank 10 is connected to an input end of the diffusion dialyzer 30 through the first pipe 11; in this embodiment, the first pipe 11 is provided with a first metering pump 12, a tap water filter 13 and a first valve 14 in sequence; the first metering pump 12 and the tap water filter 13 are both connected to the first pipe 11, and the first valve 14 is provided on the first pipe 11 and is located beside the output end of the tap water filter 13. The first metering pump 12 is used to deliver water in the tap water tank 10 into the diffusion dialyzer 30. The tap water filter 13 is used to filter out impurities in the tap water to ensure the quality of subsequent sulfuric acid recovery; the first valve 14 is used to adjust the flow rate of the tap water filter 13 into the diffusion dialyzer 30; the tap water filter 13 is provided with an activated carbon adsorption layer 131 and a nano-carbon fiber adsorption layer 132 arranged at intervals, wherein the activated carbon adsorption layer 131 and the nano-carbon fiber adsorption layer 132 are both arranged in two layers, and the upper end of the tap water filter 13 is provided with a first exhaust pipe 133 connected to the inside of the tap water filter 13.

[0021] The output end of the anodizing tank 20 is connected to the other input end of the diffusion dialyzer 30 through a second pipe 21; in the present embodiment, a second metering pump 22, an oxidation filter 23 and a second valve 24 are arranged on the second pipe 21; the second metering pump 22 and the oxidation filter 23 are both connected to the second pipe 21; the second valve 24 is arranged on the second pipe 21 and is located beside the output end of the oxidation filter 23; a second exhaust pipe 231 connected to the interior of the oxidation filter 23 is arranged at the upper end of the oxidation filter 23; the second valve 24 is used to adjust the flow rate of the waste entering the diffusion dialyzer 30, so as to ensure that the diffusion dialyzer 30 has a better dialysis effect.

[0022] The wastewater tank 40 is connected to the waste outlet of the diffusion dialyzer 30, and is used to collect the aluminum-containing waste after dialysis for subsequent process treatment. In this embodiment, a plurality of anion ion exchange membranes 31 arranged at intervals are arranged in the diffusion dialyzer 30.

[0023] The heating kettle 50 is connected to the other output end of the diffusion dialyzer 30, and one output end of the heating kettle 50 is connected to the wastewater tank 40 through the third pipe 51, and the other output end of the heating kettle 50 is connected to the input end of the anodizing tank 20 through the fourth pipe 52; in this embodiment, a cooling device 54 is provided on the fourth pipe 52, and the cooling device 54 is used to complete the cooling of the sulfuric acid solution flowing out of the heating kettle 50, and the cooling device 54 includes a cooler 541, a cooling tower 542, a cooling pipe 543 and a second circulating water pump 544; the cooler 541 is arranged on the fourth pipe 52 and is connected to the fourth pipe 52; the cooling tower 542 is arranged on the side of the fourth pipe 52, and the cooling device 541 is used to cool the sulfuric acid solution flowing out of the heating kettle 50. The two ends of the cooling pipe 543 are respectively connected to the input end and the output end of the cooling tower 542. The cooling pipe 543 partially extends into the cooler 541, and the portion of the cooling pipe 543 extending into the cooler 541 is integrally formed with a bending portion 545. The bending portion 545 is used to increase the flow length of the coolant in the cooler 541, thereby improving the cooling effect; the second circulating water pump 544 is arranged on the cooling pipe 543 and connected to the cooling pipe 543. The second circulating water pump 544 is used to complete the circulation process of the coolant between the cooling pipe 543 and the cooling tower 542; the fourth pipeline 52 is provided with a second pump body 55, and the second pump body 55 is arranged between the cooling device 54 and the anodizing tank 20.

[0024] The condensing device 60 is arranged on the third pipeline 51 and condenses the water vapor in the third pipeline 51, so as to facilitate the discharge of the condensed water into the wastewater tank 40; in this embodiment, the condensing device 60 includes a condenser 61, a condensation tower 62, a condensation pipe 63 and a first circulating water pump 64; the condenser 61 is arranged on the third pipeline 51 and communicated with the third pipeline 51, and the condensation tower 62 is arranged beside the third pipeline 51; the two ends of the condensation pipe 63 are respectively communicated with the input end and the output end of the condensation tower 62, and the condensation pipe 63 extends inwardly into the condenser 61; the first circulating water pump 64 is arranged on the condensation pipe 63 and communicated with the condensation pipe 63, and the first circulating water pump 64 is used to complete the circulation process of the condensate between the condensation pipe 63 and the condensation tower 62; the third pipeline 51 is provided with a first pump body 53, the first pump body 53 is located between the condensation device 60 and the wastewater tank 40, and the first pump body 53 is used to send the water condensed in the condensation device 60 into the wastewater tank 40.

[0025] The design focus of the utility model is that: by providing an anodizing tank, a tap water tank and a diffusion dialyzer, the acid in the anodizing waste liquid is filtered through the diffusion dialyzer to reduce the acidity in the waste water, thereby effectively reducing the sewage treatment efficiency and treatment cost, and at the same time, the filtered sulfuric acid is increased in sulfuric acid concentration through a heating kettle, and then re-flowed into the anodizing tank for recycling, thereby avoiding waste of materials and reducing the acid cost of the enterprise, and then the water vapor generated in the heating kettle is condensed and discharged into the waste water tank through a condensing device, thereby completing the entire waste treatment and recycling process.

[0026] The above implementation modes are merely descriptions of the preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary engineering and technical personnel in the field shall fall within the protection scope determined by the claims of the present invention.

Claims

1. An anodic oxidation sulfuric acid waste liquid treatment system, characterized in that: The invention comprises a tap water tank, an anodic oxidation tank, a diffusion dialyzer, a waste water tank, a heating kettle and a condensing device; the output end of the tap water tank is connected with an input end of the diffusion dialyzer through a first pipe; the output end of the anodic oxidation tank is connected with the other input end of the diffusion dialyzer through a second pipe; the waste water tank is connected with the waste material output port of the diffusion dialyzer; the heating kettle is connected with the other output end of the diffusion dialyzer, and an output end of the heating kettle is connected with the waste water tank through a third pipe, and the other output end of the heating kettle is connected with the input end of the anodic oxidation tank through a fourth pipe; the condensing device is arranged on the third pipe and condenses the water vapor in the third pipe.

2. The anodizing sulfuric acid waste liquid treatment system according to claim 1, characterized in that: The first pipe is provided with a first metering pump, a tap water filter and a first valve in sequence; the first metering pump and the tap water filter are both connected to the first pipe, and the first valve is provided on the first pipe and located beside the output end of the tap water filter.

3. The anodizing sulfuric acid waste liquid treatment system according to claim 2, characterized in that: The tap water filter is provided with an activated carbon adsorption layer and a nano carbon fiber adsorption layer arranged at intervals, wherein the activated carbon adsorption layer and the nano carbon fiber adsorption layer are both arranged in two layers, and a first exhaust pipe connected to the inside of the tap water filter is provided at the upper end of the tap water filter.

4. The anodizing sulfuric acid waste liquid treatment system according to claim 1, characterized in that: A second metering pump, an oxidation filter and a second valve are arranged on the second pipeline. The second metering pump and the oxidation filter are both connected to the second pipeline. The second valve is arranged on the second pipeline and is located beside the output end of the oxidation filter. A second exhaust pipeline connected to the inside of the oxidation filter is arranged at the upper end of the oxidation filter.

5. The anodizing sulfuric acid waste liquid treatment system according to claim 1, characterized in that: The diffusion dialyzer is provided with a plurality of anion exchange membranes arranged at intervals.

6. The anodizing sulfuric acid waste liquid treatment system according to claim 1, characterized in that: The condensing device includes a condenser, a condensing tower, a condensing pipe and a first circulating water pump; the condenser is arranged on and connected to the third pipeline, and the condensing tower is arranged beside the third pipeline; the two ends of the condensing pipe are respectively connected to the input end and the output end of the condensing tower, and the condensing pipe extends inwardly into the condenser; the first circulating water pump is arranged on the condensing pipe and connected to the condensing pipe.

7. The anodizing sulfuric acid waste liquid treatment system according to claim 1 is characterized in that: The third pipeline is provided with a first pump body, and the first pump body is located between the condensing device and the waste water tank.

8. The anodizing sulfuric acid waste liquid treatment system according to claim 1, characterized in that: The fourth pipeline is provided with a cooling device, which includes a cooler, a cooling tower, a cooling pipe and a second circulating water pump; the cooler is arranged on the fourth pipeline and is connected to the fourth pipeline; the cooling tower is arranged beside the fourth pipeline, and the two ends of the cooling pipe are respectively connected to the input end and the output end of the cooling tower, the cooling pipe part extends into the cooler, and the part of the cooling pipe extending into the cooler is integrally formed with a bending portion; the second circulating water pump is arranged on the cooling pipe and is connected to the cooling pipe.

9. The anodizing sulfuric acid waste liquid treatment system according to claim 8, characterized in that: The fourth pipeline is provided with a second pump body, and the second pump body is provided between the cooling device and the anodizing tank.

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