24
2025
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01
The Application of Diffusion Dialysis Technology in the Recovery of Waste Acid in the Aluminum Profile Industry
Author：
As one of the basic industries in industry and commerce, the aluminum profile industry has played an important role in the rapid growth of China's economy in recent years. However, with the expansion of the production scale of aluminum profiles, the environmental pollution problems generated in the production process have become increasingly prominent. Especially in the anodizing process, a large amount of waste sulfuric acid is produced. If it is directly discharged without proper treatment, it will cause serious pollution to water bodies and soil and affect the balance of the ecosystem. Therefore, the recycling and reuse of waste acid has become an important issue that the aluminum profile industry urgently needs to solve. As an efficient membrane separation technology, diffusion dialysis technology shows great application potential in the waste acid recovery of the aluminum profile industry. This technology realizes the effective treatment of anodizing waste acid through a homogeneous diffusion dialysis membrane system combined with traditional processes. The diffusion dialysis device can purify more than 80% of sulfuric acid from the waste liquid. At the same time, the interception rate of aluminum ions reaches 90%, and the aluminum ion content returned to the oxidation bath is less than 1g/L, which has a good effect on the stable control of aluminum ions in the bath. The advantages of diffusion dialysis technology lie not only in its high - efficiency separation ability, but also in its simple equipment, low investment and almost no power consumption. In practical applications, the floor area of the main diffusion dialysis equipment is relatively small, and the operating power is only the operating power of a low - flow and low - lift pump, which can be ignored. This makes diffusion dialysis technology highly economical and feasible in the waste acid recovery of the aluminum profile industry. The waste acid treated by diffusion dialysis technology not only realizes the reuse of resources, but also significantly reduces the production costs of enterprises. On the one hand, the recycled sulfuric acid can be re - put into the production cycle, reducing the purchase of fresh acid. On the other hand, due to the extremely low energy consumption of the diffusion dialysis technology itself, the waste water disposal cost is also greatly reduced. This has significant economic benefits for the aluminum profile industry, which relies on a large amount of acidic chemicals. In addition, the application of diffusion dialysis technology in the waste acid recovery of the aluminum profile industry also has important environmental significance. By recycling and reusing waste acid, environmental pollution is significantly reduced, which meets the requirements of sustainable development and environmental protection regulations. At the same time, this technology also prompts enterprises to review and optimize their production processes, reduce waste generation, and helps to achieve a green production and circular economy model. In conclusion, the application of diffusion dialysis technology in the waste acid recovery of the aluminum profile industry has broad prospects and important value. It can not only achieve the reuse of resources and reduce production costs, but also reduce environmental pollution and enhance the environmental image of enterprises. With the continuous progress of technology and the in - depth promotion of applications, diffusion dialysis technology will play an even more important role in the aluminum profile industry and even the entire industrial field.
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