A new fire station created to meet the emergency services needs of Runway 2 at Manchester Airport is benefiting from Mono technology to handle waste water and sewage from shower and toilet facilities.

A Mutrator pumping system, consisting of two industrial progressing cavity pumps and two M18D macerators, was supplied with all interconnecting pipework and enclosed above ground in a double-doored GRP kiosk.  The positive displacement action of the pump lifts the sewage and wastewater from the sump into the  macerator for disintegration and then transfer to the mainline sewer at a capacity of 11m3/h.  Any unacceptable solids fall back out of suspension into the sump for periodic removal.  This avoids any pump damage that usually occurs with submersible pumps.

By finely macerating the sewage before pumping, the customer benefits from small bore pumping.  Small bore rising main costs are reduced and the rising main can be installed by mole plough or slit trench methods saving considerable sums over open trench excavations.   Being a positive displacement pump, head is independent of speed.  This combined with correct pump selection leads to low wear rates, minimal spares usage, lower running costs, less downtime and hence Least Whole Life Costs.  On many high head pumping duties, Mutrators can consume less than 50% of the energy of conventional sewage pumps.