ProMinent GmbH

- Model TW - Reverse Osmosis System


Permeate output 3 – 50 m3/h. Reverse osmosis system Dulcosmose TW is the all-purpose model for modern potable water desalination. Maximum permeate output at low operating pressures ensures low investment and operating costs.

Potable water desalination for industrial applications - compact and cost-effective.

As the system runs with low operating pressures, the entire Dulcosmose TW can be fitted with inexpensive PVC pipework. This system is also available with an integral, semi-automated cleaning system and permeate and/or raw water flushing option. Equipped with the latest generation of 'ultra low-pressure' diaphragms, this system achieves maximum permeate output with low operating pressures, thereby lowering investment and operating costs.

The system is very adaptable to specific customer requirements. Pipework material, other types of diaphragm for enhanced salt retention, integration of measuring and control technology and metering technology to visualisation of the entire process with peripheral components via a PLC.

  • Efficient operation with low pressure diaphragms with outputs of up to 85% and high salt retention rates of up to more than 99% (depending on the type of diaphragm used)
  • Reduced maintenance and service costs as well as long diaphragm service lives thanks to integrated cleaning concepts and flushing options, such as permeate flushing
  • Service-friendly construction of systems on a corrosion-resistant powder-coated steel or stainless steel frame
  • Simple and safe to operate: Microprocessor control with direct connection option for peripheral system components and integrated conductivity measurement with plain text display in the graphic display
  • One-stop shop: no interface problems, smooth running with short times between definition of the task to joint commissioning and on-site system supervision with our global subsidiaries.

  • Power plants: Provision of boiler feed water
  • Electroplating / metal processing industry: Provision of rinsing water
  • Beverage industry: Provision of rinsing water, product water and process and return dilution water
  • Food industry: Provision of rinsing water and process water
  • Chemical industry: Provision of rinsing water and process water
  • Provision of rinsing water and process water for laboratory purposes and industrial rinsing machines
  • Pure water for laboratory applications, hospital uses (autoclaves, high-speed steam generators)
  • Feed water for cooling and air conditioning plants (air humidification and air scrubbers)
  • Process water in printing plants, the pharmaceutical or cosmetics industry

Technical Details

  • Turnkey systems constructed on a high-quality, double powder-coated steel or stainless steel frame
  • Highly efficient low-pressure diaphragms with maximum output and system retention rates of over 99% integrated in epoxy-glass resin pressure pipes
  • Pre-filter 5µm with manometer for determining differential pressure
  • Pressure switch to protect the high-pressure pump
  • Flow meter to display permeate, concentrate and concentrate return volume
  • Semi-automatic cleaning system for chemical module cleaning for long module service lives
  • 2 switching inputs for level control of the cleaning tank
  • 2 switching inputs for level control of the permeate tank
  • Pause switching input for external On/Off
  • External fault switching input
  • Temperature measuring input (PT 100)
  • Active permeate valve output (filling of cleaning tank)
  • Active output for flushing valve for initial permeate disposal (depending on conductivity), raw water, permeate and interval flushing (idle time management)
  • Active output for controlling a metering pump (anti-scalant)
  • Analogue output 0/4…20 mA conductance
  • Optional industrial PLC with touch panel and process visualisation

The product range Dulcosmose TW was designed for the following values in feed water:

  • Salt content max.: 1,000 mg/l*
  • pH range: 3.0 … 10.0
  • Silt density index max.: 3
  • Free chlorine max.: 0.1 mg/l
  • Total Fe, Mn max.: 0.2 mg/l
  • Total hardness max.: 0.1 °dH
  • Bacteria count max.: 100 KBE/ml
  • Turbidity max.: 0.5 NTU
  • COD max.: 5 mg/l**

* Differing salinities affect the performance data accordingly
** As O2