Situation
• Discarding of surface treatment process baths (e.g. pickling, galvanising,
  nickel-plating, phosphate coating) after a finite life
• Accumulation of metalliferous waste water from rinsing processes
• Recoverable substances (metals, acids) lost in waste water treatment as a
  result of neutralisation/precipitation.
• High consumption of chemicals for bath disposal/replacement
• Necessity to dispose of accumulating heavy metal sludge
 
BFI solutions
Metal recovery through solvent extraction:
• Developments relating to solvent extraction process and to
  combined processes (liquid membranes, membrane contactors)
• Cost reduction through extractive valuable-metal recovery (e.g. of zinc,
  nickel, copper)
• Prolongation of process bath life (e.g. pickling acids) through selective
  removal of interfering metals
• Homogenisation of product quality through continuous bath maintenance
• Avoidance of heavy metal sludge
• Reduction of chemical and fresh water consumption

Our services and facilities
• Laboratory batch apparatus for determining suitable extraction agents, 
  stripping acids and process parameters
• Customer technical centre for process development
• Mobile testing equipment for process demonstration directly on site
  (extraction up to 200 l/h, membrane separation up to 4 m3/h)
• Chemical laboratories, instrumental analysis