Treatment device for high-nickel and high-tin aluminum alloy photovoltaic profile anodic oxidation wastewater

Abstract

The utility model relates to a high-nickel high-tin aluminum alloy photovoltaic profile anodic oxidation wastewater treatment device which comprises a raw water tank, an outlet of the raw water tank is connected with an inlet of an acid-base neutralization tank, and an outlet of the acid-base neutralization tank is connected with an inlet of at least one clay tank; the outlet of the clay tank is connected with the inlet of at least one gamma-aluminum oxide tank; an outlet of the gamma-aluminum oxide tank is sequentially connected with a sewage tank 1 #, a sewage tank 2 # and a sewage tank 3 #, the sewage tank 1 # is connected with a dosing device of polymeric aluminum oxide, the sewage tank 2 # is connected with a dosing device of polyacrylamide, a filter pressing device is arranged between the sewage tank 2 # and the sewage tank 3 #, and an anion resin device is arranged in the sewage tank 3 #. The device can be used for treating the sewage after anodic oxidation of the aluminum profile, so that the sewage reaches the discharge standard of pollutants for electroplating (GB21900-2008) and the national comprehensive standard for sewage discharge (GB 8978-1996).

Description

Technical Field

[0001] The utility model relates to a sewage treatment device, in particular to a treatment device for anodic oxidation wastewater of high-nickel and high-tin aluminum alloy photovoltaic profiles. Background Technique

[0002] Anodic oxidation wastewater mainly comes from the anodic oxidation treatment process of metal components such as aluminum products, which contains a large amount of heavy metal ions (such as aluminum ions), fluorides, sulfates, nitrates, and organic pollutants, and has certain corrosiveness and toxicity. For the treatment of anodic oxidation wastewater, a process combining multiple methods is usually adopted to ensure that the wastewater is effectively purified and meets the discharge standards.

[0003] The following are the main methods for treating anodic oxidation wastewater:

[0004] 1. Pretreatment

[0005] Neutralization reaction: First, by adding neutralizing agents such as lime milk and sodium hydroxide, adjust the pH value of the wastewater to an appropriate range to precipitate a large amount of aluminum ions and other heavy metal ions.

[0006] Solid-liquid separation: Remove solid particles and suspended substances in the wastewater by methods such as precipitation, membrane filtration, or centrifugation.

[0007] 2. Chemical treatment

[0008] Chemical precipitation method: Add an appropriate amount of precipitants (such as lime, sulfide, etc.) to the wastewater to convert heavy metal ions into water-insoluble precipitates, and then remove them by precipitation or filtration.

[0009] Ion exchange method: Utilize the adsorption capacity of resins to remove target ions in the wastewater.

[0010] Redox method: By adding oxidants or reductants, change the chemical valence states of certain substances in the wastewater, so that they become easier to remove or reduce toxicity.

[0011] 3. Biological treatment

[0012] Aerobic treatment: Under the condition of providing sufficient oxygen, utilize the degradation ability of aerobic microorganisms to decompose organic substances in the wastewater into harmless substances.

[0013] Anaerobic treatment: Under the condition of no oxygen, utilize anaerobic microorganisms to decompose organic pollutants to produce available gases such as methane.

[0014] 4. Advanced treatment

[0015] Adsorption method: Utilize adsorbents such as activated carbon and activated alumina to remove residual pollutants in the wastewater, such as fluoride ions, etc.

[0016] Membrane separation technology: including microfiltration, ultrafiltration, reverse osmosis, etc., which uses the permeability of the membrane to intercept suspended solids, heavy metal ions, organic matter, etc. in wastewater. Among them, reverse osmosis technology can effectively remove salts, small molecule organic matter, etc. in water.

[0017] Advanced oxidation technology: such as photocatalytic oxidation, ozone oxidation, etc., which decomposes refractory organic matter in wastewater into harmless small molecule substances by generating strongly oxidizing free radicals.

[0018] At present, the selection of the anodic oxidation wastewater treatment process needs to be comprehensively considered according to factors such as the characteristics of the wastewater, the production volume, and environmental requirements. This is because the wastewater generated by different anodic oxidation processes varies greatly, and the degree to which different polluting elements can be removed is also different. Enterprises need to strengthen the monitoring and maintenance of the wastewater treatment system to ensure the stable operation of the treatment process and the continuous compliance of the treatment effect.

[0019] The core of aluminum profile anodic oxidation is to energize the aluminum profile in a sulfuric acid tank to form a dense anodic oxidation film on the surface, and then through the coloring tank and sealing hole tank, the aluminum profile surface is given a specific color and has better corrosion resistance and weather resistance. Usually, the total nickel ion content in the coloring tank and sealing hole tank is 50 g / L, and the tin ion content is 40 g / L. At present, the common anodic oxidation waste liquid is treated by acid-base neutralization, then PAC (polyaluminum chloride) is added, and then PAM (polyacrylamide) is added for flocculation treatment. However, it is found that after treatment in this way, the sewage is light blue-green, and it is detected that the nickel and tin have not been reduced to the maximum value of the national standard discharge amount; the content of other pollutants also does not fully meet the national standard discharge amount. The standard discharge amount specified in Table 2 of the "Discharge Standard of Pollutants for Electroplating" GB21900-2008: nickel, tin ≤ 0.5 mg / L. Utility Model Content

[0020] In view of the above problems, the present utility model provides a treatment device for anodic oxidation wastewater of high-nickel and high-tin aluminum alloy photovoltaic profiles. Specifically, high-nickel and high-tin means that the nickel and tin element content in the sewage exceeds 2.5 mg / L. In view of the high content of nickel and tin elements in the wastewater, the present application adopts a γ-aluminum oxide tank and an anion resin device, which can not only effectively reduce the nickel and tin element content to the discharge standard, but also make the aluminum content in the wastewater reach the discharge standard.

[0021] At the same time, in the present utility model, a clay tank is used to filter the wastewater after acid-base neutralization, combined with subsequent PAC (polyaluminum chloride) + PAM (polyacrylamide) treatment, which can make the chemical oxygen demand of the wastewater meet the discharge standard.

[0022] To solve this technical problem, the present utility model adopts the following solutions:

[0023] A treatment device for anodic oxidation wastewater of a high-nickel and high-tin aluminum alloy photovoltaic profile, comprising a raw water tank, the outlet of the raw water tank is connected to the inlet of an acid-base neutralization tank, the outlet of the acid-base neutralization tank is connected to the inlet of at least one clay tank for loading clay; the outlet of the clay tank is connected to the inlet of at least one γ-aluminum oxide tank for loading γ-aluminum oxide;

[0024] The outlet of the γ-aluminum oxide tank is successively connected to sewage tank 1#, sewage outlet 2# and sewage tank 3#. Among them, sewage tank 1# is connected to a dosing device for polyaluminum oxide, sewage tank 2# is connected to a dosing device for polyacrylamide, a pressure filtration device is arranged between sewage tank 2# and sewage tank 3#, an anion resin device is arranged in sewage tank 3#, and the outlet of sewage tank 3# is connected to a medium water tank.

[0025] Further, the outlet of the acid-base neutralization tank is respectively connected to the inlet of clay tank 1# and the inlet of clay tank 2# for loading clay;

[0026] The outlets of clay tank 1# and clay tank 2# are respectively connected to the inlet of γ-aluminum oxide tank 1# and the inlet of γ-aluminum oxide tank 2# for loading γ-aluminum oxide;

[0027] The outlets of γ-aluminum oxide tank 1# and γ-aluminum oxide tank 2# are respectively successively connected to sewage tank 1#, sewage outlet 2# and sewage tank 3#.

[0028] Further, the acid-base neutralization tank is respectively connected to a hydrochloric acid dosing device and a lime dosing device.

[0029] Further, the acid-base neutralization tank is connected to a pH on-line detection device.

[0030] Further, the clay tank includes a tank body, a support net arranged at the bottom of the tank body, and a filter cloth bag arranged on the support net for loading clay.

[0031] Further, the γ-aluminum oxide tank includes a filtration tank, an inlet is arranged at the bottom of the filtration tank, a porous support assembly is arranged along the fluid advancing direction at the inlet for carrying γ-aluminum oxide, and an outlet is arranged at the top of the filtration tank.

[0032] Further, the anion resin device includes at least two anion resin filtration devices connected in parallel.

[0033] Further, the anion resin filtration device includes a resin tank body for containing anion resin. One end of the resin tank body is provided with a water inlet, and the other end is provided with a water outlet. The resin tank body is also connected to a regenerant storage tank for loading the agent for regenerating the anion resin.

[0034] By adopting the foregoing technical solution, compared with the prior art, the utility model can effectively reduce the high content of nickel and tin in the anodized wastewater of aluminum alloy photovoltaic profiles, and at the same time can also reduce the phosphate content, total nitrogen and chemical oxygen demand. After the wastewater is treated, in addition to meeting the discharge standard, the conductivity ≤ 200 μs / cm 2 , so the treated wastewater can also be used as recycled water in the water washing tank for anodizing. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 is a schematic structural diagram provided by Embodiment 1 of the utility model;

[0036] Figure 2 is a schematic structural diagram provided by Embodiment 2 of the utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0037] The technical solutions of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings and specific embodiments. However, those skilled in the art will understand that the following described embodiments are some embodiments of the present utility model, rather than all embodiments, and are only used to illustrate the present utility model and should not be construed as limiting the scope of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model. Conditions not specified in the embodiments are carried out according to conventional conditions or conditions recommended by the manufacturer. Reagents or instruments not specified by the manufacturer can be obtained as conventional products through commercial purchase.

[0038] In the description of the present utility model, 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 accompanying drawings, and is only for the convenience of describing the present utility model 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 construed as limiting the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0039] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "linkage" 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 an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0040] Embodiment 1:

[0041] Reference Figure 1 , a treatment device for anodic oxidation wastewater of a high-nickel and high-tin aluminum alloy photovoltaic profile, including a raw water tank 1, the outlet of the raw water tank 1 is connected to the inlet of an acid-base neutralization tank 2, the outlet of the acid-base neutralization tank 2 is connected to the inlet of at least one clay tank 3, and the clay tank 3 is used to load clay; the outlet of the clay tank 3 is connected to the inlet of at least one γ-aluminum oxide tank 4, and the γ-aluminum oxide tank 4 is used to load γ-aluminum oxide;

[0042] The outlet of the γ-aluminum oxide tank 4 is sequentially connected to a sewage tank 1# (shown as 5 in the figure), a sewage outlet 2# (shown as 6 in the figure), and a sewage tank 3# (shown as 7 in the figure). Among them, the sewage tank 1# is connected to a dosing device 51 for polyaluminum chloride, the sewage tank 2# is connected to a dosing device 61 for polyacrylamide, a pressure filtration device 8 is arranged between the sewage tank 2# and the sewage tank 3#, an anion resin device 9 is arranged in the sewage tank 3#, and the outlet of the sewage tank 3# is connected to a medium water tank 10.

[0043] Embodiment 2:

[0044] Reference Figure 2 , a treatment device for anodic oxidation wastewater of a high-nickel and high-tin aluminum alloy photovoltaic profile, including a raw water tank 1, and the outlet of the raw water tank 1 is connected to the inlet of an acid-base neutralization tank 2.

[0045] In order to facilitate real-time observation of the pH of the wastewater in the acid-base neutralization tank 2, a pH on-line detection device, such as a common on-line pH detector, can be connected to the side wall of the acid-base neutralization tank 2.

[0046] The outlet of the acid-base neutralization tank 2 is respectively connected to the inlets of a clay tank 1# 31 and a clay tank 2# 32. The clay tank 1# 31 and the clay tank 2# 32 are used to load clay. The clay tank includes a tank body, a support net arranged at the bottom of the tank body, and a filter cloth bag arranged on the support net, and the filter cloth bag is used to load clay.

[0047] The outlets of the clay pots 1#31 and the clay pots 2#32 are respectively connected to the inlets of the γ-aluminum oxide pots 1#41 and the γ-aluminum oxide pots 2#v42. The γ-aluminum oxide pots 1#41 and the γ-aluminum oxide pots 2#42 are used to load γ-aluminum oxide. The γ-aluminum oxide pot includes a filtration pot. An inlet is provided at the bottom of the filtration pot. A porous support assembly is provided along the fluid advancing direction at the inlet. The support assembly is used to carry γ-aluminum oxide. An outlet is provided at the top of the filtration pot.

[0048] The outlets of the γ-aluminum oxide pots 1#41 and the γ-aluminum oxide pots 2#42 are respectively and sequentially connected to the sewage pond 1#5, the sewage outlet 2#6 and the sewage pond 3#7. The sewage pond can be a common cement-built pond or a waterproof brick-built pond. Generally, inlets and outlets are respectively provided at the two opposite ends of the sewage pond, and the inlet can be higher than the outlet.

[0049] Among them, a dosing device 51 for polyaluminum chloride is connected to the top of the sewage pond 1#5, a dosing device 61 for polyacrylamide is connected to the top of the sewage pond 2#6. A pressure filtration device 8 is provided on the pipeline connecting the sewage pond 2#6 and the sewage pond 3#7. Two parallel anion resin filtration devices 91 and 92 are provided in the sewage pond 3#7. The outlet of the sewage pond 3#7 is connected to the intermediate water tank 10.

[0050] The anion resin filtration devices 91 and 92 can include resin tanks. The resin tanks are used to install anion resins. An inlet is provided at one end of the resin tank. An outlet is provided at the other end of the resin tank. The resin tank is also connected to a regenerant storage tank. The regenerant storage tank is used to load the agent for regenerating the anion resin, such as an 8wt% sodium chloride solution.

[0051] Test Example

[0052] Using the treatment device for the anodizing wastewater of the high-nickel and high-tin aluminum alloy photovoltaic profiles in Example 2 to treat the wastewater. The composition of the wastewater is shown in the raw water situation in Table 1. First, 20 tons of wastewater are passed through two parallel clay pots. Each pot contains 20 kg of clay. After the clay is used up, it can be reused daily by eluting with clean water. The clay is sourced from Huizi Mineral Products Co., Ltd. in Lingshou County and has a particle size of 300 mesh.

[0053] After the wastewater is filtered through clay as a filter medium, the filtrate is collected and sent into two parallel γ-aluminum oxide tanks. Each tank contains 20 kg of γ-aluminum oxide, which can be reused daily by eluting with clean water after being used up. This γ-aluminum oxide has a high specific surface area and exhibits a nano-adsorption effect. The synthesis method of γ-aluminum oxide is as follows: 18 parts by weight of high-purity aluminum nitrate is dissolved in 100 parts by weight of distilled water to obtain an aluminum nitrate solution; 6 parts by weight of urea is dissolved in 25 parts by weight of distilled water, and then the prepared aluminum nitrate solution is added. The mixed solution is placed in a high-pressure reactor and reacted at 200 °C for 2 hours, then cooled to room temperature, and the white precipitate is obtained by centrifugation. After washing with distilled water, it is dried at 70 °C for 1 hour to obtain a white powder, and then the white powder is placed in a furnace at 950 °C and kept warm for 4 hours to obtain the product.

[0054] After the wastewater is adsorbed and filtered through γ-aluminum oxide, it is input into sewage tank 1#. Sewage tank 1# is pre-filled with 1 ton of clean water, and 12 kg of polyaluminum chloride (PAC) is added through the dosing device of polyaluminum oxide. After it is completely dissolved, the wastewater treated by γ-aluminum oxide adsorption is pumped in. In sewage tank 1#, after being treated with PAC for 24 hours, it is then sent into sewage tank 2#.

[0055] Sewage tank 2# is pre-filled with 1 ton of clean water, and 1.2 kg of polyacrylamide (PAM) is added through the dosing device of polyacrylamide and completely dissolved, and then the wastewater is pumped into sewage tank 2#. To enhance the reaction effect, gas is introduced at the bottom of sewage tank 2#. After fully reacting for 24 hours and standing still, the generated sludge is output from the system through a pressure filtration device for further treatment, and the obtained filtrate is sent into sewage tank 3#.

[0056] In sewage tank 3#, two sets of anion resin devices are arranged in parallel. The resin used in the anion resin device is AMBERLITE IRA-400 anion exchange resin, which contains a polymer of styrene, divinylbenzene, and vinyl-N,N,N-trimethylbenzylammonium chloride and is a strongly basic type I anion exchange resin. Before use, the resin is first soaked in saturated brine, and the amount is approximately twice the volume of the resin to be treated. The resin is immersed in the brine for 18 - 20 hours, then the brine is drained, and it is rinsed with clean water until the drained water is colorless; then it is soaked in a 2wt% - 4wt% NaOH aqueous solution with the same amount for 2 - 4 hours (or washed with a small flow rate), and after draining the alkali solution, the resin is rinsed until the drained water is close to neutral; finally, it is soaked in a 5wt% HCL solution with the same amount for 4 - 8 hours, the acid solution is drained, and it is rinsed with clean water until it is neutral for standby. After the resin in the above anion resin device is used for 1 month, it needs to be eluted with an 8wt% sodium chloride solution once before it can be used again.

[0057] In sewage tank 3#, two parallel resin filtration devices are used to perform resin adsorption treatment on the wastewater. The total flow rate of the two resin filtration devices is: 4×10 -2 m / s. After resin adsorption, the up-to-standard discharged sewage can be obtained, and its main indicators are shown in Table 1.

[0058] Table 1 Test Results Table after Wastewater Treatment (mg / L)

[0059] Component Raw water Example 2 Comparative Example 1 Comparative Example 2 Comparative Example 3 Nickel 3.2 0.1 2.5 0.5 0.2 Tin 2.9 0.1 2.2 0.6 0.2 Aluminum 6.5 0.5 5.9 2.9 1.5 Phosphate 1.2 0.4 1 0.8 0.5 Total phosphorus 2.8 0.6 1.5 1.1 0.8 Total nitrogen 27 10 20 15 18 Ammonia nitrogen 19 8 18 16 13 Suspended solids 59 6 55 26 38 Fluoride 12 5 11 11 8 Chemical oxygen demand (CODcr) 98 10 90 76 50

[0060] Comparative Example 1

[0061] Take the anodic oxidation wastewater of high-nickel and high-tin aluminum alloy photovoltaic profiles. The composition of the wastewater is shown in the raw water situation in Table 1. The traditional method, namely PAC+PAM, is adopted. Specifically, first, 20 tons of wastewater is input into sewage tank 1#. 1 ton of clear water is previously installed in sewage tank 1#, and 12 kg of polyaluminum chloride (PAC) is added. After it is completely dissolved, the water is pumped into the wastewater. In sewage tank 1#, after PAC treatment for a period of time, it is then sent to sewage tank 2#.

[0062] 1 ton of clear water is previously installed in sewage tank 2#, and 1.2 g of polyacrylamide (PAM) is added and completely dissolved, and then the wastewater is pumped into sewage tank 2#. In order to increase the reaction effect, gas is added to the bottom of sewage tank 2#, and after sufficient reaction, it is left to stand. Then, through the pressure filtration device, the generated sludge is output from the system for further treatment, and the test results of the obtained filtrate are shown in Table 1.

[0063] Comparative Example 2

[0064] Take the anodic oxidation wastewater of high-nickel and high-tin aluminum alloy photovoltaic profiles. The composition of the wastewater is shown in the raw water situation in Table 1. The scheme of clay+PAC+PAM is adopted for treatment. Specifically, first, 20 tons of wastewater passes through two parallel clay tanks, and each tank contains 20 kg of clay. After the clay is used up, it can be reused by eluting with clear water every day. The clay is sourced from Huizi Mineral Products Co., Ltd., Lingshou County, and the particle size is 300 mesh.

[0065] After the wastewater is filtered through clay as a filter medium, the filtrate is collected and sent to sewage tank 1#. 1 ton of clear water is previously installed in sewage tank 1#, and 12 kg of polyaluminum chloride (PAC) is added. After it is completely dissolved, the water is pumped into the wastewater treated by clay adsorption. In sewage tank 1#, after PAC treatment for a period of time, it is then sent to sewage tank 2#.

[0066] 1 ton of clean water was previously installed in sewage tank 2#. After adding 1.2 kg of polyacrylamide (PAM) and completely dissolving it, the wastewater was then pumped into sewage tank 2#. To enhance the reaction effect, air was introduced at the bottom of sewage tank 2#. After sufficient reaction, it was left to stand. Subsequently, through a pressure filtration device, the generated sludge was output from the system for further treatment, and the test results of the obtained filtrate are shown in Table 1.

[0067] Comparative Example 3

[0068] High-nickel and high-tin aluminum alloy photovoltaic profile anodic oxidation wastewater was taken. The composition of the wastewater is shown in the raw water condition in Table 1. A treatment scheme of clay + γ-aluminum oxide + PAC + PAM was adopted. Specifically, first, 20 tons of wastewater was passed through two parallel clay tanks, with 20 kg of clay in each tank. After the clay was used up, it could be reused daily by eluting with clean water. This clay was sourced from Huizi Mineral Products Co., Ltd., Lingshou County, and had a particle size of 300 mesh.

[0069] After the wastewater was filtered using clay as a filter medium, the collected filtrate was fed into two parallel γ-aluminum oxide tanks, with 20 kg of γ-aluminum oxide in each tank. After the γ-aluminum oxide was used up, it could be reused daily by eluting with clean water. This γ-aluminum oxide had a relatively high specific surface area, exerting a nano-adsorption effect. The synthesis method of γ-aluminum oxide was the same as that in the test example.

[0070] After the wastewater was treated by γ-aluminum oxide adsorption, it was input into sewage tank 1#. 1 ton of clean water was previously installed in sewage tank 1#. 12 kg of polyaluminum chloride (PAC) was added, and after it was completely dissolved, the water was pumped into the wastewater treated by γ-aluminum oxide adsorption. In sewage tank 1#, after being treated by PAC for a period of time, it was then fed into sewage tank 2#.

[0071] 1 ton of clean water was previously installed in sewage tank 2#. After adding 1.2 kg of polyacrylamide (PAM) and completely dissolving it, the wastewater was then pumped into sewage tank 2#. To enhance the reaction effect, air was introduced at the bottom of sewage tank 2#. After sufficient reaction, it was left to stand. Subsequently, through a pressure filtration device, the generated sludge was output from the system for further treatment, and the test results of the obtained filtrate are shown in Table 1.

[0072] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention without departing from the principles and purposes of the present invention.

Claims

1. A treatment device for high-nickel and high-tin aluminum alloy photovoltaic profile anodizing wastewater, characterized by: It comprises a raw water pool, the outlet of the raw water pool is connected to the inlet of the acid-base neutralization pool, the outlet of the acid-base neutralization pool is connected to the inlet of at least one clay tank, the clay tank is used to load clay; the outlet of the clay tank is connected to the inlet of at least one γ-alumina tank, the γ-alumina tank is used to load γ-alumina; The outlet of the γ-alumina tank is connected to sewage pool 1#, sewage outlet 2# and sewage pool 3# in sequence, wherein sewage pool 1# is connected to a dosing device for polymerized alumina, sewage pool 2# is connected to a dosing device for polyacrylamide, a filter press device is arranged between sewage pool 2# and sewage pool 3#, an anion resin device is arranged in sewage pool 3#, and the outlet of sewage pool 3# is connected to a grey water tank.

2. The device for treating wastewater from anodizing of high-nickel and high-tin aluminum alloy photovoltaic profiles according to claim 1 is characterized in that: The outlet of the acid-base neutralization tank is connected to the inlet of clay tank 1# and the inlet of clay tank 2#, respectively, and the clay tank 1# and the clay tank 2# are used to load clay; The outlet of the clay tank 1# and the outlet of the clay tank 2# are connected to the inlet of the γ-alumina tank 1# and the inlet of the γ-alumina tank 2#, respectively. The γ-alumina tank 1# and the γ-alumina tank 2# are used to load γ-alumina; The outlet of the γ-alumina tank 1# and the outlet of the γ-alumina tank 2# are connected to the sewage pool 1#, the sewage outlet 2# and the sewage pool 3# respectively.

3. The device for treating wastewater from anodizing of high-nickel and high-tin aluminum alloy photovoltaic profiles according to claim 2, characterized in that: The acid-base neutralization tank is connected to a hydrochloric acid dosing device and a lime dosing device respectively.

4. The device for treating wastewater from anodizing of high-nickel and high-tin aluminum alloy photovoltaic profiles according to claim 3 is characterized in that: The acid-base neutralization tank is connected to a pH online detection device.

5. The device for treating wastewater from anodizing of high-nickel and high-tin aluminum alloy photovoltaic profiles according to any one of claims 1 to 4, characterized in that: The clay pot comprises a pot body, a support net arranged at the bottom of the pot body, and a filter cloth bag arranged on the support net, wherein the filter cloth bag is used for loading clay.

6. The device for treating wastewater from anodizing of high-nickel and high-tin aluminum alloy photovoltaic profiles according to any one of claims 1 to 4, characterized in that: The γ-alumina tank comprises a filter tank, a water inlet is arranged at the bottom of the filter tank, a porous support assembly is arranged along the fluid advancing direction of the water inlet, the support assembly is used to carry the γ-alumina, and a water outlet is arranged at the top of the filter tank.

7. The device for treating wastewater from anodizing of high-nickel and high-tin aluminum alloy photovoltaic profiles according to any one of claims 1 to 4, characterized in that: The anion resin device comprises at least two anion resin filtering devices connected in parallel.

8. The device for treating wastewater from anodizing of high-nickel and high-tin aluminum alloy photovoltaic profiles according to claim 7, characterized in that: The anion resin filtering device comprises a resin tank body, which is used to install anion resin. A water inlet is arranged at one end of the resin tank body, and a water outlet is arranged at the other end of the resin tank body. The resin tank body is also connected to a regeneration agent storage tank, which is used to load a reagent for regenerating the anion resin.

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