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NUBIAN S OASIS GREYWATER
RECYCLING ATTRACTS COMMERCIAL INTEREST FROM WATER SOLUTIONS
ENGINEERS
Greywater recycling in apartment blocks, townhouse complexes and
commercial buildings is now feasible using Nubian s OASIS
greywater recycling processor in the system design. Water solutions
engineers are seeking compact, above ground equipment that allows
recycling for irrigation or internal reuse in toilets and
laundries. Property investors, offering sustainable Green
Buildings to environmentally responsible tenants, can
install economic OASIS systems that save substantial amounts of
drinking water up to60% of conventional usage patterns
Nubian launched its OASIS greywater processor late in Dec 2006,
and has a growing number of residential installations in VIC, NSW,
ACT, QLD and SA. The systems have been accredited in several states
to a level at which the treated water may be used internally in
laundries and toilets, and for above ground irrigation. Nubian is
pressing on with its program to achieve Class A+ accreditation.
Nubian s OASIS technology is Australian with global
patents pending. It uses the well proven wastewater treatment
processes of solids separation, biological treatment and
ultraviolet disinfection. The biological treatment step is the
heart of the technology, and is an innovative form of aerated
biofilter, which provides very high rate processing and is very
robust in its ability to deal with varying and shock loads, which
are typical of residential greywater. Treated water is of a high
quality, with BOD and Suspended Solids levels typically less than 5
ppm. The high UV dosage consistently delivers Thermotolerant
Coliform levels close to zero. The system is fully automated, and
is designed to require no user intervention between scheduled
service calls. On-line and remote monitoring devices can be added,
and these can integrate with building automation systems
Greywater recycling offers consistent water availability to
overcome drought and water restrictions. Architects can design
sustainable buildings which can still offer residents lush gardens
and water features, using water that would otherwise be destined
for the sewer. Greywater systems that are above ground and discreet
in size, are a recent option in Green Buildings .
Another benefit for operators is the reduced load on sewage systems
with greywater treated and recycled rather than going to sewer.
The OASIS processor can treat up to 1,500 litres per day.
Linking multiple processors in parallel on a skid mounted system,
together with a common greywater collection and screening system
provides a scalable plant suitable for daily hydraulic loads of up
to 15,000 litres per day. Optional ultra filtration, chlorination
or RO raises water quality even further. Recycled water can be
stored with rainwater in common tanks if overflows are managed to
ensure excess rainwater goes to stormwater, and excess recycled
water goes to sewer.
Nubian is currently developing a larger processor to treat 5,000
litres per day each. A group of these in a common system would
occupy a single parking space in a car park.
Property developers will use clusters of these systems in large
estates, processing greywater and irrigating common land, gardens
and even reticulating into groups of houses. Recycling treated
water back into residences can reduce drinking water by more than
40% and sewer discharge by 60% - promising substantial savings in
reticulation of sewage processing facilities
OASIS greywater processors are attracting attention from the
commercial sector because of the simplicity of integration into
engineered sustainable architectural designs. It makes achieving
environmentally responsible buildings a lot easier.
For more information on commercial applications
please feel free to contact us. | 
