A comprehensive wastewater treatment station in an industrial park in Chengdu, Sichuan, serves more than 20 chemical and food processing enterprises in the park, and the aeration blower runs 24 hours a day. The original factory imported fan wear-resistant accessories are expensive to purchase, with a delivery period of more than 30 days, and the accessories have insufficient corrosion resistance. They need to be replaced in an average of 3 months. The energy consumption of the fan remains high, and the operation cost of sewage treatment in the park is under great pressure.