Filtration is the process of passing liquid containing suspended matter through a suitable porous material (filtering medium) to effectively remove the suspended impurities in the liquid. It is the final step in the solid removal process which includes coagulation, Flocculation and sedimentation.
The combination of anthracite and Graded sand together can remove a majority of suspended particles greater than 10 microns in size. After treatment, the SDI (Silt Density Index) is reduced and the turbidity reaches less than 3 from 20. The systems require backwashing to remove the accumulated contamination of suspended particles and rinsed by down flow clean filtered water before use in order to extend bed life.
Dual media Filtration is widely used in the water pre-treatment, which available with Automatic and/or manual operational features. The tank material fiber glass reinforced plastic.