Aerobic biological fluidized bed process used in 3-D hollow filler is aerobic biological carrier, filling a hollow structure, running into the filler suspended in the water. Packing internal growth of anaerobic bacteria, denitrification can produce nitrogen; external growth of aerobic bacteria to remove organic matter, nitrification and denitrification processes exist simultaneously throughout the process. 
Features: 
1 copolymer with high-quality materials, a long soak in the water does not degrade, nor will it toxic to microorganisms, superior to other materials such as polyvinyl chloride. 
2 special structure, hollow structure of the inner and outer packing a total of three open circles, there is an edge in each round, there are 36 outer edge, after numerous successful research and development, using a molding. 
3 high specific surface area, specific surface area of ​​90-180 General Microbiology, specific surface area of ​​the hollow filler is up to 600, an area of ​​up to 860 or more than double, because of its high specific surface area per unit volume of the biomass is high, water can be achieved The purpose of the short residence time. 
4 high activity of microorganisms. Biofilm growth on the surface of the filler material flow due to filling of a collision.Aeration scour the high activity of microorganisms in logarithmic growth phase, high processing efficiency. 
5 hollow filler for the floating type, easy to replace, long service life. 
6 nitrogen, decomposition of organic matter ability to achieve the purpose of the removal of ammonia.