The Importance of Filler in Integrated Water Purification Systems:

1. The packing can be suspended, making replacement easy and durable.

2. The filling material harbors anaerobic bacteria internally, which trigger denitrification and can remove nitrogen. Externally, aerobic bacteria grow, facilitating aerobic decomposition of organic matter. Therefore, both nitrification and denitrification processes occur simultaneously.

3. High microbial activity. The microbial film growing on the surface of the packing, due to the fluidization collision and aeration flushing, keeps the microorganisms in a logarithmic growth phase of high activity, resulting in high treatment efficiency.