Bleed-treatment

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Ecotoxicity

Contents

Recovery of metals by bleed-treatment

Removal of invaluable bulk metals

Removal of

  • Iron
    • Hydroxide precipitation
  • Al
    • Hydroxide precipitation
  • As
    • Co-precipitation with iron
      • Chemical oxidation
      • Biological oxidation of Fe and As
    • Sulfide precipitation
      • xxx

Removal of trace metals

  • Conversion processes
    • Chemical conversion
      • Oxidation
      • Reduction
    • Biological conversion
      • Oxidation
      • Reduction
  • Ad- or absorption
    • Accumulation
    • Co-precipitation
    • Biosorption

Removal of sulfates

  • Lime treatment
  • Membrane technologies
  • Biological sulfate removal
  • xxx

Removal of salts

  • Calcium precipitation
  • Evaporation
  • Membrane Technology
  F ClCN
Ca-precipitation      
Evaporation      
Membrane technology      

Removal of organics

Removal of cyanide

Examples of combined flow-sheets

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