The membrane microporous aerator is the latest aeration device developed in the 1980s. It features small bubble size, large gas-liquid contact area, uniform bubble diffusion, no pore clogging, and strong corrosion resistance. However, after years of operation, some unresolved issues emerged, such as membrane detachment, tearing, failure to open, and sludge entering the air distribution pipes. In response, the company's R&D department collaborated with domestic and international universities and research institutions, drawing on advanced global experience to overcome technical challenges. They reformed the membrane aerator and developed a new generation of disc membrane microporous aerators with international advanced standards for the 21st century.

The variable microporous aerator is designed with a slightly convex arched surface, using ABS engineering plastic as the main material. The membrane is made of specially imported anti-fouling rubber (EPDM) processed through unique techniques. The apertures on the membrane are precision-cut using German imported CNC blades, ensuring high quality and accuracy. During oxygen aeration, the main disc is designed with four air delivery channels, allowing incoming air to be buffered by the check valve and directly sent to the center of the aerator, ensuring the membrane opens easily with low resistance in one go. The membrane is mechanically assembled with threaded anti-loosening to prevent detachment. When air is supplied, the microporous distribution membrane expands automatically to allow air passage. When aeration stops, the variable microporous openings close, preventing clogging due to the self-expanding and contracting nature of the membrane. Additionally, the aerator's base is equipped with a check valve device that prevents mixed liquor from entering the air distribution pipes when the pipeline system stops supplying air, avoiding clogging in the pipes. Incoming air does not require special filtration, and intermittent aeration does not cause clogging. Significant technical improvements have been made to address common issues such as membrane tearing, failure to open, or clogging in variable microporous aerators. These innovations eliminate the need for maintenance during long-term operation, making it an excellent new-generation product.