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Liquid Purification Technologies

The Liquid Purification Technologies (LPT) business unit offers products and solutions for the treatment of water and other liquid media. It is one of the world’s leading manufacturers of ion exchange resins.


Lewatit® ion exchange resins are used in the treatment of process and waste water in a variety of industries. In addition, special resin types aid the reliable and efficient production of ultra-pure water, which is needed in microelectronics in particular.


Ion exchangers also remove undesirable substances from groundwater in order to turn it into drinking water. In their decades of use all around the world, also Bayoxide® iron oxide adsorbers have proven a reliable means of removing arsenic from drinking and waste water.


Moreover, Lewatit® is an established and indispensable component in the food and beverage industry. For example, in this sphere it would hardly be possible to produce crystal and liquid sugar economically on an industrial scale without special types of Lewatit®.


Similarly, ion exchangers for the final polishing of nickel and cobalt concentrates are used to produce high-purity cobalt and nickel. These metals are constituent parts of active materials for cell cathodes of lithium-ion batteries.


Lewatit® ion exchange resins and adsorbers are also in widespread use in the pharmaceutical and bioprocessing industries. Here they help in the treatment and cleaning of products obtained from biomass by providing support with extraction, adsorption and chromatography or through their use in demineralization and neutralization.


The principle of ion exchange has also found a wide variety of applications in the household. When used in water filter pitchers, Lewatit® products remove carbonate hardness, because many people much prefer the taste of tea and coffee made with soft drinking water. Ion exchange resins are also used in mains water circuits, where they soften drinking water and protect household appliances such as washing machines and dishwashers against calcification.


The Liquid Purification Technologies business unit offers an extensive portfolio of innovative technologies for the treatment of water and other liquid media – for a wide variety of applications.

The most important brands & products

  • Lewatit® ion exchange resins
  • Bayoxide® iron oxide adsorbers
  • LewaPlus® calculation and design software

Main industries

  • Power generation
  • Food industry
  • Chemical and petrochemical industries
  • Pharmaceuticals industry
  • Electronics industry
  • Metal processing industry
  • Mining

Main industries

  • Biotechnology
  • Chemical and Petrochemical
  • Electronics
  • Food and Beverages
  • Mining and Metallurgy
  • Municipal Water Treatment
  • Paper and Pulp
  • Pharmaceutical
  • Power Generation
  • Semiconductor and Photovoltaics

Important application areas

  • Biotechnological and pharmaceutical processing
  • Catalysis
  • Condensate Polishing
  • Drinking water treatment
  • Production of sugar and sweeteners
  • Recovery of battery materials for e-mobility
  • Treatment of industrial process water
  • Treatment of industrial waste water and waste water recycling
  • Production of ultra-pure water