In the process of aerobic biological fluidized bed, the three-dimensional hollow filler is used as aerobic biological carrier, and the filler is hollow structure, which is suspended in water during normal operation. Anaerobic growth in the filler produces denitrification to remove nitrogen; Aerobic bacteria grow outside, organic matter is removed, nitrification and denitrification process exist in the whole process.

Features:

1 use of copolymer materials, long time immersion in wastewater will not degrade, will not be toxic to microorganisms, better than the use of other materials such as PVC.

2 structure, hollow packing structure is a total of three layers of hollow circle inside and outside, each circle has 1 edge, 36 edges outside, after many research and development success, using a molding.

(3) High specific surface area, the specific surface area of ordinary microorganisms is 90-180, the specific surface area of hollow filler can reach 600, and the double specific area can reach more than 860. Because of the high specific surface area, the biomass per unit volume is high, which can achieve the purpose of short hydraulic retention time.

High activity of microorganisms. The microbial film growing on the surface of the filler is impacted by the fluidization of the filler. Aeration scour leaves microorganisms in a logarithmic growth phase of high activity.

Hollow packing for floating type, easy to replace, long service life.

6 Denitrification, decomposition of organic matter, to achieve the purpose of removing ammonia nitrogen.