As part of a drive to reduce
maintenance downtime,
Welsh Water has installed an
innovative EZstrip Cake
Pump from framework
supplier NOV Mono at its
sewage treatment works in
Cardigan,West Wales.

The Mono progressing
cavity (PC) Cake Pump has
been installed to transfer 22-
28% sludge cake from the
site’s centrifuge dewatering
process to a storage skip for
later removal from site.

Specifically designed to
minimise the time and cost
involved in maintaining a
progressing cavity pump, the
new EZstrip cake pump can
be completely stripped down
and rebuilt in just 15 minutes,
without the need to
disconnect or remove any
pipe work.

The pump features a
highpurpose-
designed feed
chamber that is disconnected
by removing only a few
screws and allows access to
the pin joint area for removal
of any blockages or compressed
cake. Once the rotor
assembly is disconnected
from the screw conveyor, the
rotor and stator can be
removed.