1. High - efficiency Ammonia Nitrogen Removal: With a special structural design, it greatly increases the attachment area for microorganisms. It has a remarkable effect on removing ammonia nitrogen in wastewater, effectively reducing the ammonia nitrogen content in sewage and meeting strict discharge standards. 2. Good Fluidization Performance: Models k1, k2, and k3 are suitable for different working conditions. They can fluidize evenly in the fluidized bed and fully contact with the sewage, ensuring the stability and continuity of treatment efficiency. 3. Durable and Corrosion - resistant: Made of high - quality selected materials, it has excellent chemical stability. It can withstand various harsh wastewater environments, is not easy to deform or damage during long - term use, and has a long service life. 4. Simple Installation and Maintenance: The filler has a unified specification, and the installation process is simple, without the need for complex equipment or professional technology. Daily maintenance only requires regular inspection of the fluidization condition, which is easy to operate and reduces operation and maintenance costs.