2. Organization of an additive filter

Kieselguhr filter components

A Kieselguhr or other additive filter is always added (figure 8 b ):

• a diatomaceous earth feeder with agitator and alluvial feed and metering pump, or two specialized pumps. There may also be two dosers, each dispensing a specific type of alluvium;

• a filtration pump with a flow control valve (if the pump is a centrifugal pump);

• a flowmeter ;

• sample taps ;

• high-point drain valves ;

• a manhole for visualizing alluvial flow;

• a look at the filtered liquid;

• ...