Reverse Osmosis

Effective water purification

RO is a cost effective way to purify your water using a semi-permeable membrane to remove any undesirable elements that may be found in your water supply.
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Reverse osmosis Reverse osmosis

Energy efficient RO systems

Purified water

Reverse Osmosis treatment for high quality water without chemicals

From the smallest café to the largest produc­tion facility, BWT has a range of Reverse Osmosis units designed and devel­oped to protect a single appli­ance, process or whole facility.

Installed as a single unit or as part of a modular water treat­ment solu­tion, BWT Reverse Osmosis is the most effec­tive and reli­able form of water treat­ment avail­able for the removal of unde­sir­able elements from a given water supply. It will remove 90-99 % of all dissolved solids and 98% of all bacteria and fine suspended parti­cles below 1 micron particle size. Reverse Osmosis is a phys­ical process that makes use of a semi-​permeable membrane to sepa­rate water from substances dissolved in it.

Typical Applications

  • Process water
  • Boiler water feeds
  • Food and beverage preparation
  • Food processing
  • Rain water harvesting systems
  • Car washes
  • Ice and drinking water production
  • Laboratory water supplies
  • Manufacturing


  • Hotels and restaurants
  • Schools, colleges and universities
  • Hospitals and laboratories
  • Manufacturing plants
  • Food and manufacturing industries
  • Electronics industry
  • Sports and leisure facilities
  • Farming and horticultural
  • Printing

How RO system works

Reliable and maintenance-friendly

Reverse osmosis is a membrane sepa­ra­tion process which, by means of a high water pres­sure, is capable of sepa­rating (retaining) the dissolved salts (ions) present in the raw water and letting the pure water mole­cules pass through the membrane. In reality it is the water mole­cules which are removed from the dissolved salts and not, as you know from ion exchange, the ions that are removed from the water. The dissolved salts are removed almost 100 % and the membrane pores are so small that even micro organ­isms such as bacteria and pyro­genes cannot pene­treate.

The pure water (permeate) is collected in the reser­voir and from here pumped to point of use. The “dirty” water (concen­trate) is fed to drain. Program­mable logic controllers (PLC) are often used for moni­toring conduc­tivity levels and other oper­ating para­meter making even larger systems easy to moni­tor and control.

Reverse osmosis
Reverse osmosis

BWT bestaqua 14 ROC

The BWT bestaqua 14 ROC was designed for tough appli­ca­tions in the food service sector. It is ideal for producing very pure water, such as that needed to produce steam for combi­na­tion steamers or steam ovens, or for a steam feed when baking. It also enables all unwanted substances to be removed from the water effort­lessly, allowing the water to vaporise entirely without residues. Reverse osmosis devel­oped specif­i­cally for the restau­rant trade.
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Reverse osmosis

BWT PERMAQ® Pro 2500

The BWT PERMAQ® Pro 2500 supplies high quality permeate for boilers, closed/open cold water cycles in climate systems and cooling towers, closed hot water systems and other process water for indus­trial appli­ca­tions where a low conduc­tivity (< 20 μS/cm) is required. The high quality, reli­a­bility and effi­ciency of the system is ensured by the inclu­sion of membranes and pumps selected for their tech­nology and dura­bility.
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Reverse osmosis

BWT PERMAQ® Pro 2700

The BWT PERMAQ® Pro 2700 covers a permeate flow range between 6 and 20m3/h for indus­trial appli­ca­tions. High quality permeate suit­able for car washes, boiler water, steam produc­tion and district heating, auto­clave, evap­o­ra­tors and tech­nical water instal­la­tions where the reduc­tion of the TDS in the water is very impor­tant. Its small foot print, smart ​design and easy access to all of its compo­nents makes it ideal for smaller plant rooms.
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Reverse osmosis

BWT PERMAQ® Pro 2900

The BWT PERMAQ® Pro 2900 supplies high quality permeate for use with boilers, closed/open cold water cycles in climate systems and cooling towers, closed hot water systems and other process water for indus­trial appli­ca­tions, where a low conduc­tivity (< 20 μS/cm) is required. Compo­nents are selected with a focus on the latest tech­nology, effi­ciency and quality. This ensures a reli­able and effi­cient system with high capacity.
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Reverse osmosis

BWT PERMAQ® Pro 2000

The BWT PERMAQ® Pro 2000 is ideal for heating and tech­nical process water, where a low conduc­tivity (<20μS/cm) is required. The system has been designed to be used with suit­able pre-​treament like a water soft­ener to provide an emphasis on simple and stable oper­a­tion. The advanced control system ensures auto­matic discon­nec­tion should the water supply fall below a prescribed level, protecting the unit and any subse­quent instal­la­tions.
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Reverse osmosis

BWT PERMAQ® Pro 1800

The BWT PERMAQ® Pro 1800 is the perfect solu­tion for large auto­claves, steam gener­a­tors, dish­washers, laun­dries and car washes, where a low conduc­tivity (< 20 μS/cm) is required and where space is limited. The design is compact, maintenance-​friendly and allows for easy instal­la­tion in confined spaces. It has been designed to be simple to use and with a suit­able water soft­ener as pre-​treatment reli­able and stable in oper­a­tion.
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Reverse osmosis

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