Filter media

Different functions between filtering materials with different shapes: Main functions are the same, but filtering effect will differ from each other. Details are as follows:

                                                                    1)Filtering ring: When streams go through the filtering rings, they will go through the center pores with high flow speed, so that the useful bacteria have enough places for breeding. In this case, the biochemical filtering effect is good, but the physical filtering effect is inferior by comparison.
                                                             2)Filtering ball and screes: The filtering ball and screes are with high density. Streams through filtering materials are even, of which the physical filtering effect are good, but the efficiency of favorale bacterias breeding is not as good as filtering rings.
 
3)Filtering tower: There are many gaps on the surface of towers, which are helpful for streamss disperse without any block. The effective area streams go through increases more. Favorable bacteria could breed easily because of its rough surface. Both of physical and biochemical filtering effect are very good.