CN-224199202-U - Electric flocculation equipment for continuously purifying surface passivation treatment cleaning water of aluminum product

Abstract

The utility model discloses electric flocculation equipment for continuously purifying passivation cleaning water on the surface of an aluminum product, which comprises a raw water storage tank, mechanical stirring, a water inlet pump, an electric flocculation tank, a power supply, a polar plate, an overflow tank and a discharge tank, wherein the passivation cleaning water in the raw water storage tank is pumped into the electric flocculation tank by the water inlet pump for purification treatment, and is discharged into the discharge tank after the treatment is finished, and the obtained supernatant can be recycled in a production line. The utility model uses the electric flocculation technology to continuously treat for a long time, and the electric flocculation tanks are connected in series or in parallel or connected with other electric flocculation tanks in parallel after being connected in series, so that the problems of the current electric flocculation equipment, namely the problems that the anode generates high-concentration metal cations after electrified electrolysis, the ion concentration of the solution near the electrode and the bulk solution form ion concentration gradient, and the concentration polarization can influence the electrolysis efficiency of the polar plate, can be solved.

Inventors

• LI ZHIYU
• WEI ZHIQIANG
• TANG XIUFENG
• HUANG XIUFENG

Assignees

• 藤县飞乐电子科技有限公司

Dates

Publication Date

20260505

Application Date

20250401

Claims (3)

1. 1. An electric flocculation device for continuously purifying aluminum surface passivation treatment cleaning water is characterized by comprising a raw water storage tank (1), mechanical stirring (2), a water inlet pump (3), electric flocculation tanks (4), a power supply (5), polar plates (6), overflow tanks (7) and a discharge tank (8), wherein the electric flocculation tanks (4) are respectively connected with the raw water storage tank (1) and the discharge tank (8) through pipelines, the number of the electric flocculation tanks (4) arranged between the raw water storage tank (1) and the discharge tank (8) is 1-20, the electric flocculation tanks (4) are connected in series and in parallel or are connected with other electric flocculation tanks (4) in parallel after being connected in series by a plurality of electric flocculation tanks (4), the water inlet pump (3) is arranged on a pipeline connected with the raw water storage tank (1), the polar plates (6) are arranged inside the electric flocculation tanks (4), the polar plates (6) are divided into anode plates and cathode plates, the anode plates are connected with the power supply (5) and cathode plates (5) respectively, the cathode plates and anode plates (5) are connected with the cathode plates (6) in parallel and the mechanical stirring tank (2) are connected in parallel, the mechanical stirring tank (2) is arranged inside the mechanical stirring tank, the cathode plates and the anode plates are adjacent to each other.
2. 2. The electric flocculation device for continuously purifying aluminum surface passivation treatment cleaning water according to claim 1, wherein the distance between adjacent anode plates and cathode plates in the electric flocculation tank (4) is 2-40 cm.
3. 3. The electric flocculation device for continuously purifying aluminum surface passivation treatment cleaning water according to claim 1, wherein the overflow tank (7) is arranged above the electric flocculation tank (4), and the height of the overflow tank (7) is 1/10-1/4 of the main body height of the electric flocculation tank (4).

Description

Electric flocculation equipment for continuously purifying surface passivation treatment cleaning water of aluminum product Technical Field The utility model relates to the technical field of sewage treatment, in particular to an electric flocculation device for continuously purifying cleaning water for aluminum surface passivation treatment. Background Because aluminum alloy has better acid resistance, F-is introduced into phosphating solution to promote the growth of a film layer on the metal surface, the content of F-can obviously influence the final film forming quality, therefore, in the current aluminum activation phosphating technology, most manufacturers adopt phosphating solution of a fluorine-boron system to lead to higher fluorine ion content in the phosphating solution, and generally use a large amount of phosphoric acid, when the aluminum material is subjected to phosphating treatment, generally dissolved aluminum ions are about 0.6-1.0 g/m < 2 >, the dissolved aluminum ions are carried out by aluminum materials and enter a cleaning tank, after the aluminum ions in the cleaning tank are accumulated to a certain concentration, aluminum phosphate precipitates are generated by reaction at a lower pH value, the precipitates are easy to adhere to the surface of a product, the surface quality of the product is influenced, and measures are necessary to take the dissolved aluminum ions out of the phosphating tank as soon as possible, so that the influence degree of the aluminum ions is reduced. The cleaning water for the surface phosphating treatment of the aluminum material has high phosphorus and fluorine plasma, serious environmental pollution and difficult waste liquid treatment. At present, the treatment methods of domestic and foreign phosphorus-containing wastewater mainly comprise a chemical phosphorus removal method, a biological phosphorus removal method and a chemical-biological combined phosphorus removal method, which all need to consume more reagents/materials and have low treatment efficiency, so that the treatment equipment with less material consumption, cleanness and high efficiency needs to be provided. Disclosure of utility model The utility model mainly aims to provide an electric flocculation device for continuously purifying the surface passivation treatment cleaning water of aluminum materials. The aim of the utility model can be achieved by adopting the following technical scheme: an electric flocculation device for continuously purifying surface passivation cleaning water of aluminum comprises a raw water storage tank, a mechanical stirring device, a water inlet pump, an electric flocculation tank, a power supply, a polar plate, an overflow tank and a discharge tank. Preferably, the electric flocculation tank is connected with the raw water storage tank and the discharge tank through pipelines respectively. Preferably, the number of the electric flocculation tanks arranged between the raw water storage tank and the discharge tank is 1-20, and the electric flocculation tanks are connected in series or in parallel or connected in parallel with other electric flocculation tanks after being connected in series by a plurality of electric flocculation tanks. Preferably, the pipeline connecting the electric flocculation tank and the raw water storage tank is provided with the water inlet pump. Preferably, the electric flocculation tank is internally provided with the polar plate, the polar plate is divided into an anode plate and a cathode plate, the anode plate is connected with the anode of the power supply, the cathode plate is connected with the anode of the power supply, the raw water storage tank is internally provided with the mechanical stirring, and the mechanical stirring comprises a driving motor and a stirring frame. Preferably, the polar plates in the electroflocculation tank are formed by connecting a plurality of groups of cathode and anode polar plates in parallel, and every two adjacent cathode and anode polar plates are arranged between each two adjacent cathode and anode polar plates. Preferably, the distance between the adjacent anode plates and the adjacent cathode plates in the electric flocculation tank is 2-40 cm. Preferably, the overflow groove is arranged above the electric flocculation groove, and the height of the overflow groove is 1/10-1/4 of the height of the electric flocculation groove main body. In the electrocoagulation process, the coagulant is generated in situ by electrolytic oxidation of an Fe or Al electrode, and ions are continuously generated in the system as an anode material. The released ions neutralize the charge of the particles, thereby initiating agglomeration. These ions can be removed by chemical reaction and precipitation, or by agglomerating colloidal materials, followed by electrolytic flotation to remove undesirable contaminants (metal hydroxides and metal phosphate flocs formed in the wastewater). During electrolysis, phosphate