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Compact RO plant with high recovery and low energy consumption

Reference ID: 070704
Industry: Food industry
Application: Boiler water

After having bought their steam from a neighboring company for a number of years, the customer was looking to start its own steam production instead. In collaboration with the boiler manufacturer it was determined that the customer needed up to 20 m³ of high quality treated water per hour with a conductivity less than 20 µS/cm.
Due to the increasing drainage fees, the customer requested a solution with a high level of water recovery. In collaboration with EUROWATER, the customer settled on a RO-PLUS plant with a NaOH digital dosing step. Consequently, the recovery is effectively between 85 and 90%.
The NaOH dosing reduces CO2 concentration in the water, and combined with the RO treatment the amount of blowdown needed is lowered significantly, thereby reducing water usage further and saving both time and money.
The customer is very satisfied with the solution. It connected seamlessly with the existing control system and the return of investment for the plant was less than 6 months.

Technical data

  • Flow: 2 x 10 m³/h
  • Conductivity: < 5 µS/cm
  • Recovery: 85-90 %
  • Raw water conductivity: > 500 µS/cm

Units in plant

  • Softening unit SMP2002-F
  • Reverse osmosis units, 2 x RO-PLUS C3-9+C3-2
  • Online hardness measurement
  • Digital NaOH dosing for CO2 removal
  • Control cabinet with PLC, touch panel and Ethernet communication
  • 10 m³ reservoir