To increase process efficiency
at its Warrington North
(Gatewarth) wastewater
treatment works (WwTW)
by preventing pump
blockages and minimising
down time, United Utilities
has specified a TR Muncher
from NOV Mono. The TR
Muncher macerates heavy
solids and rags to a small
particle size.

To ensure the two Mono
grinders could be
incorporated into existing
pipework at the base of the
well,Mono engineers took
the decision to move
forwards two existing Flygt
pumps and fabricate new
discharge pipework for the
installation. They also
replaced old gate valves with
new, slimmer, knife valves in
order to isolate the sludge
flow for pump maintenance.

The TR Muncher, which
has a capacity range of 0-
500m3/h raw sewage, features
the latest generation of twin
shaft grinders and is designed
specifically for the efficient
treatment of abrasive sludges.