Study on Backwash of Biological Aerated Filter

摘要

Backwash was very important for ensuring the successful performance of biological aerated filter(BAF). Through the experiment, combined air-water backwash mode were taken in 2 2 BAF backwash and water backwash were 5~7L/(m~2 s) and air backwash 13~17L/(m~2 s) with the backwash period 24h and the backwash time 15min. It took 5~6h to recover to the optimal performance after backwash.