Alkali stable NF membranes can be used for following applications :
Textile : caustic recovery from mercerizing wastewater originating from a textile producing plant
Pulp and Rayon: cleaning of caustic liquors from hemicellulose and other organic contaminants allow up to 95% reuse of sodium hydroxide
Food, Beverage and Dairy: cleaning of spent caustic production line washing streams (CIP) and IEX regeneration solutions (in sugar decolourisation operations) to allow up to 95% reuse of sodium hydroxide
Chemicals : numerous industrial applications for alkali recovery and end-product concentration in alkaline media production processes
Typical applications for Alkali Stable Membranes are :
Recovery of spent alkaline streams (NaOH, KOH)
Recovery of metals from alkaline streams
Recovery of spent electrolyte solutions
Reduction of COD in industrial wastewater prior to neutralization
Recovery of bottle and equipment cleaning solutions
Aggressive cleaning of membranes in standard applications
The membranes are tested on following solutions :
20% NaOH
20% KOH
Acid Stable membranes can be operated in acid solutions to recover acids and simultaneously concentrate inorganic or organic ions or compounds.
Typical applications in this includes :
Purification of acids from metal cations
Recovery of acids in leaching operations
Decolourization of mineral acids
Recovery of dissolved chemicals
Concentration and recovery of ions in acid streams
Chemicals : numerous industrial applications for acid recovery and end-product concentration in acidic media production processes
Food, Beverage and Dairy : purification of spent acidic CIP streams, used for production lines and equipment cleaning
The membranes are tested on following solutions :
20% H2SO4
20% HCl
30% H3PO4
4% HNO3
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