Chopper pumps for lift stations can be sized for hydraulic requirements without regard to minimum sphere passing diameters. Generally, non-clog pumps must be sized according to maximum anticipated sphere size, with hydraulic considerations secondary. This results in higher costs not only due to the larger pump, but also due to lower efficiency and higher power consumption. However, since a chopper pump reduces the solids size prior to entry into the pump, sizing of the pump is based primarily on hydraulic requirements, with little consideration given to sphere size. Septage Receiving Septage is made up of concentrated solids from septic tanks plus rags and plastics, which can plug conventional non-clog pumps.
Chopper pumps eliminate plugging problems by chopping all incoming solids prior to pumping.
Septage receiving pit pumping is a very tough challenge. This is an unnecessary added cost in installation, operation and maintenance, when a chopper pump does both jobs with one piece of equipment. Chopper pumps eliminate roping completely by chopping these solids as they enter the pump. If the reformed solid is chopped during the recirculation process, then the small chopped solids have a high surface to volume ratio and are digested faster. Chopper pumps are able to handle a higher solids content than conventional non-clog pumps.