Removing heavy metals

Removing heavy metals (Nickel, iron, lead, and chromium) and carcinogenic hydrocarbons (Pyrene, Phenatherene, and Fluoranthene) from contaminated water and effluents have become an important process in making our water bodies free from pollutant. Expanded Clay Aggregate (ECA®) or Lightweight Expanded Clay Aggregate (LECA) is used to removing heavy metals from contaminated water to make water potable.

The most widely used techniques for the removal of heavy metals and hydrocarbon from petrochemical industrial effluents are advanced treatment techniques such as:

  • Chemical Precipitation
  • Chemical Oxidation and Reduction
  • Electrochemical Treatment
  • Ion exchange Filtration
  • Reverse Osmosis

Most of these techniques have:

  • Operational difficulties
  • High maintenance costs
  • Use of costly mineral absorbents

 And all these counterbalances the efficiency and performance advantages.

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