BAF Origin and Development
Biological aerated filter(BAF) which treatment wastewater is developed in recent years of wastewater treatment process, already in Europe, America and Japan is widely popular, but little research in our country. Biological aerated filters the biggest characteristics is a collection of biological oxidation and intercept suspended solid at an organic whole, save the subsequent traps (such as the second pond). In addition, the process load, hydraulic loading capacity, cover an area of an area, the infrastructure investment is less, oxygen transfer rate is high, water is good wait for a characteristic. This process can achieve BOD, suspended matter and NH3-N remove and can be used in both sewage level 2 processing, also can use deep treatment of water reuse.