Brief: 
BAF process in order to provide micro-organisms need oxygen to survive, ordinary biofilter commonly used filter ventilation holes in the lower part, relying on natural ventilation oxygen, so easily lead to uneven distribution of supply pressure, appear short-circuiting, local gas block phenomenon, natural ventilation controlled oxygen tanks and air temperature difference of at, filter height, Filter material gap and wind, not to filter to provide a stable, uniform ventilation, by the BAF Filter Filter material layer in a forced air natural ventilation instead of oxygen in order to survive entirely on aerobic Biological Ceramsite Filter material of microbial metabolism requires sufficient, stable oxygen parts to improve BAF the overall effect. 
Features: 
From tanks and air temperature difference, the height and hang from filter membrane bio Ceramsite Filter material porosity control, bubble diameter is small, and distribution of large bubbles, because aerator exit irregularities aliquot easily be blocked, not afraid of biofilm organisms Ceramsite Filter material heap pressure. 
Structure: 
Ventilation charge and manifold using ABS-UPVC Plastic rigid pipe, made ​​of ABS made ​​by the upper pipe clamps, pipe clamps down, single-hole film, ABS fixed Adjust bracket and so on.

The main Technical parameters:

Product specification:

Installation and Other: 
1, in the BAF install Plates, BAF special Filter head, then install the hole membrane aerator, then pour goose Cobble cushion (height of about 200m), and finally into the aerobic Biological Ceramsite Filter material. Avoid goose smashed Cobble cushion aerator, and also to avoid welding flames and heavy damage to the sharp fall in the pool piping and aerator. 
2, this product is not installed before the weight should not be, should not be placed outdoors, away from the fire, to avoid damage.