Ion exchange

LWT ENGINEERING offers ion exchange filters for removing total hardness and alkalinity from water, selective ion removal, demineralization of water. 

Ion exchange is a reversible process of substitution between ions. If positively charged ions are exchanged then we talk about cationic exchange, if negatively charged - about anion exchange. The working fluid in this process is an ionite (ion exchange resin) which is a material that has basic or acidic radicals its structure. 

The main types of filters: 

• Softeners (removal of total hardness).
• H-cationization with starved regeneration (removal of total hardness and alkalinity).
• H-OH filters (water demineralization).
• Filters with selective resins (removal of nitrates, bromides, organics).

 The use of ion exchange: 

• Water treatment for steam and hot water boilers. 
• Water treatment for beer production. 
• Water treatment for CHP.