Centrifugal Pump

Centrifugal pumps, although less expensive than positive displacement pumps, suffer from clogging problems, both

FIG. 7.19.5 Screw-type sludge pump.

in the pump and in the line. Centrifugal pumps are used most often with activated sludge since the possibility of fouling is minimized on that service. The use of open, bladeless impellers prevents clogging problems.

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