anthracite coal

Anthracite coal

It is used for the filtration and purification of water supply and industrial water supply. According to the form of the filter in the use of the parameters, the pavement thickness of the normal double layer filter is 300-400mm; Normal filter speed 10-14m/h, force filter speed 14-1 8m/h; The thickness of the three-layer filter is 450mm, the normal filter speed is 18-20m/h, and the filter speed is 20 ~ 25m/h. Water flushing, water vapor flushing or surface rinsing is used in the filter backwash.