Water Clarification and Media Filtration: Arsenic Removal

PROVEN AND COST-EFFECTIVE TREATMENT METHODS FOR TYPICAL WATER POLLUTANTS: TURBIDITY, IRON, MANGANESE, ARSENIC, PESTICIDES, ETC..

Arsenic removal

Presence As (3+, 5+)
Colloidal Form
Coagulation (Ferric Hydroxide) + filtration
Organic form
Oxidation + coagulation
GAC absorption
Dissolved
Reverse Osmosis

Arsenic is usually present in natural waters in low concentrations (<0.001 mg/l) , however in groundwater, the concentration can be significantly elevated, specially in drainage from water-filled abandoned mines. The recommended limit of 0.01 mg/l for As is the approximate concentrations above which it is considered to be toxic.

Based on how Arsenic is found in the water, a number of options are available for its removal:

Colloidal form:

  • Coagulation (Ferric Hydroxide precipitation) plus conventional filtration

Organic form:

  • Oxidation of the organic matter and subsequent coagulation.
  • Absorption through GAC

Dissolved:

  • Reverse Osmosis
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*(1) All data for information only and subject to change based on actual water analysis and final design parameters

Media Filtration

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