Environmental Technology
A clarifier is generally used to remove solid particulates or suspended solids from liquid for clarification and (or) thickening. Concentrated impurities, discharged from the bottom of the tank are known as sludge, while the particles that float to the surface of the liquid are called scum.
The filter removes the solids from the sand bed whilst it is operating and removing solids from the incoming flow. So, “off-line” backwashing is not required, unlike a conventional filter. Therefore a single filter is sufficient for nonstop operation. This eliminates the need for a standby filter, and the backwash system normally required. It also minimises both the space required and the associated costs.
