Pork operations produce large
quantities of watery sludge from
their waste water processing
operations. New KDS technology
reduces this to drier, less
hazardous and more easily
transported output
The KDS Multidisc Separator system from
CST Wastewater Solutions – which requires no
washwater, while capturing 90-99% of solids
– is engineered to overcome the limitations of
technologies such as screw presses, belt presses
and centrifuges currently used.
Applications include small-to-medium pork, meat
and livestock, poultry, fish, and dairy plants as
well as large-scale food and beverage kitchens
and catering facilities which face the challenge
not only of handling heavy, sticky wet waste, but
also the volume and cost and OH&S hazards of
transporting such unhygienic material to disposal
facilities.
CST Wastewater Solutions’ managing director
Michael Bambridge says benefits of particular
importance to installations for the pork industry
include:
- Removal of solids from waste streams
- Dewatering of sludges and solids
- Screening and dewatering of pork processing
wastes
- Removal and dewatering of solids from waste
waters
- Dewatering of chemical sludges from DAF floats
- Treatment of pig farm raw manure and sludge
with cake dryness of 20-30%.
The largest energy-saving KDS unit can handle
about 100kg DS (dry solids) an hour at 98% solids
capture, to produce this more hygienic and more
compact output that is easier and cheaper to
handle and transport, he says.
Used for dewatering of dissolved air flotation
sludge – a very common application throughout
The technology involved in KDS separators, which have been proven in thousands of
applications worldwide and recently specified in Australasia for use as a major element of
a CST Wastewater Solutions installation on the World Heritage listed Lord Howe Island
After the drainage and thickening zone, the
thickened sludge passes a dewatering zone which
consists of an adjustable plate, actuated manually
or by pneumatic cylinder to further squeeze the
solids.
The KDS’ unique self-cleaning dewatering
and conveying system features an oval plate
separation and transfer structure that prevents
clogging and permits automatic continuous
operation that handles oily and fibrous material
with ease.
“This simple-to-maintain separator offers a high
throughput within a small body, with the smallest
model being just under 350mm wide and weighing
50kg. The compact rotational oval plate structure
achieves high transportation and separation
efficiencies, while the simplicity of the machine’s
overall structure offers low maintenance,
achieving cost and OH&S benefits through
less handling being required to clear hazardous
materials.
The unique self-cleaning action of the KDS
separator, which is available in hydraulic capacities
from 264-4092 gal/hr (999-15489 litres) with input
solids content of 2%.
“The KDS separator uses a fraction of the power
of a centrifuge and requires no water usage
during operation, unlike a belt press or a screw
press. For a relatively low investment cost, it also
offers a high performance alternative to sludge
drying beds and geobags, for example,” says Mr
Bambridge.
waste water operations – The KDS achieves solids
capture of 97% thickened sludge at a dryness of
17%. Waste activated sludge dryness levels are
typically 15-18% dryness.
The high quality, Japanese-manufactured
technology:
- Uses minimal energy, consuming as little as
0.06kW hr of electricity
- Operates at low (63dBa) non-intrusive noise and
vibration levels
- Requires minimal daily maintenance, saving cost
and enhancing OH&S performance
- Occupies typically half the space or less of
conventional dewatering plants
- Is available as fixed compact units or skidmounted
types that can be carried on truck or
trailer
This lighter, dryer waste it produces reduces the
need for manual labour in cleaning and transport
operations and curtails the need for staff to
handle sloppy heavy waste potentially hazardous
to health.
“With the KDS’ minimal water, power and space
demands, it is ideally suited to both smaller-tomedium
business and also to those operating in
remote or environmentally sensitive situations,”
says Mr Bambridge.
HOW IT WORKS
The clog-free automatic liquid-to-solid waste
separator dewaters solids and conditioned sludge
on a self-cleaning wedgewire belt. This static belt
is cleaned by a unique set of rotating oval shape
plates.
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