- 29 March 2007 -

Solids separation system prevents blockages in pumps

Pump expert Wilo has developed a new solids separation system for its EMUPORT sewage pump installations.

Currently, moist and moisturised cellulose tissues are amongst the most problematic items in municipal sewage disposal situations, Wilo says. When this material gets into a pump, the hydraulics are often badly affected and it can lead to the pump blocking, resulting in expensive maintenance at the pumping stations. There is also the danger that if the primary pump becomes blocked, the standby pump can also break down for the same reason, leaving the installation temporarily useless and in need of expensive maintenance.

Wilo says that its new solids separation system ensures that this material does not come into contact with the pumps during the pumping process. The basis of the new system is a solids separation reservoir through which all incoming sewage flows on its way into a collection reservoir. During the filling process, the pump remains switched off. and the incoming sewage flows into the solids separation reservoir first and the solids are held back by separating flaps. Only the liquid sewage flows through the switched off pump and reaches the collection reservoir. When the water reaches a certain level in the collection reservoir, and the solids separation reservoir, a shut off ball valve automatically closes the intake. At this stage, the filling process turns into a pumping process, but in the opposite direction to the flow into the reservoir.

www.wilo.com