ELGA Process Water is
helping Robert Wiseman
Dairies towards its target of
reducing by 25% water use
across its network of dairies
by 2015. The Bridgwater site
produces about 400m3/day of
process wastewater which
used to be treated and
discharged to the local rhyne.

Now, 200m3/day of that
wastewater is recovered by
reverse osmosis and recycled.

ELGA Process Water’s
MegaRO reverse osmosis
technology uses a membrane
to remove 99% of residual
COD, dissolved salts and
bacteria from the treated
wastewater, producing water
of quality at least equal to the
mains supply.MegaRO’s low
pressure membranes and
high efficiency pumps make
it one of the most energy
efficient plants available.

Project manager Eleanor
Walton says that because the
operating cost of the
MegaRO is low, the recovered
water costs less than mains
water even after including
capital amortisation. Payback
is expected in 2.5 year.s