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Dewatering Screw Press (DSP)

Food & Beverage

South Australia


A meat processing plant in Adelaide wanted to reduce its disposal costs for the sludge from its Dissolved Air Floatation (DAF) plant. Following a technical review of different sludge dewatering processes a Dewatering Screw Press (DSP) was identified as the best solution in the application. A trial dewatering screw press was installed to build a business case for the capital expenditure.

Following a successful 4-week trial of a Dewatering Screw Press (DSP), including customised polymer optimisation, the business bought the plant to immediately capitalise on savings from greatly reduced disposal costs.


Dewatering Screw Press (DSP) treating 100 kg/hr of DAF feed sludge at 10% dry solids (DS) produced dewatered cake at 18.6% DS.


  • Plug and play dewatering equipment
  • Simple automated solution with low operator input
  • Easily integrated to existing process
  • Polymer optimisation for site specific sludge producing maximum DS cake
  • Robust and low energy equipment


  • Successful pre-purchase pilot. Captial investment risk mitigated with trial. Success quickly justified the purchase.
  • 18.6% DS cake. Dry cake with high solids content achieved, enabling business to instantly save on sludge disposal costs.
  • Fast delivery. Hire plant delivered and commission on site within 2 working weeks
  • Fast Pilot to Production Timeframe. Once pilot plant established successful results, recommissioning it into production was done within a week.
  • Technical Support. Support and assistance during commissioning and into production was seamless and allowed production to continue with minimal
  • Reduced operating costs. Sludge disposal costs reduced dramatically with payback period of less than 6 months.