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Ion exchange vocabulary

Exchange capacity: This is the weight of ions that can be retained per unit volume ( or sometime per unit weight ) of the exchange material concerned

Bed volume: volume per hours of liquid to be treated / volume of resin

Ion flux: Bed volume * salinity of water

Regeneration level: weight of reagent used / volume of ion exchange material

Regeneration rate: 100* (grams-equivalents of regenerating reagent)/ (grams-equivalents of the eluted ions)

Regeneration efficiency: This is the opposite ratio above

Ion leakage: This is the concentration of unwanted ion left in the treated liquid

Breakthrough: This is the maximum permissible ion leakage requiring the production cycle to be shut down.

Attrition: mechanical wear of the exchanger grains as they are being used.

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