How to manifest the value of water filter in the filter work

In daily work, the value of water filter embodied mainly in the filter, then the filtering task is how to do? Thanks to the working principle of water filter.

when you need to filter the flow of liquid through the filter, the water inlet pipe through a drainage channel into the filter, and then through the support layer from top to bottom, collected by the water distribution system, through the outlet pipe.

filter after a period of time, increase the number of suspended solids in the keep filter layer, filter layer porosity is reduced, thus increasing the pore water flow.

on the one hand, the filtration resistance increases, on the other hand, the hole impurities washed away by water, pressure, water quality deterioration, when the head loss exceeds allowable values, or when the concentration of suspended solids in water more than specified value, the filtering and backwash filters should be terminated.

filter backwash water through the water distribution system into the filter, through support and filtering layer from bottom to top, through pool waste water channel, after washing filtering into the next cycle.