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Zorluk: KolayPurification and Treatment of Water for Supply

In a municipal water treatment plant, raw water undergoes several physical and chemical processing steps. What is the primary purpose of introducing activated charcoal during the purification of water for town supply?

  1. To remove unpleasant odors, objectionable tastes, and colored organic compoundsCevap
  2. B
    To destroy disease-causing bacteria and pathogenic microorganisms
  3. C
    To cause fine suspended colloidal clay particles to aggregate into large flocs
  4. D
    To precipitate calcium and magnesium ions that cause water hardness

Cevap

The primary purpose of activated charcoal in municipal water treatment is to remove unpleasant odors, objectionable tastes, and colored organic compounds.
Activated charcoal (carbon) has a micro-porous structure with an exceptionally high surface area. It physically adsorbs dissolved organic pollutants, pigments, and volatile substances that cause objectionable odors and tastes, thereby clarifying and improving the aesthetic quality of drinking water.

Adım Adım Çözüm

1
Identify the chemical reagent or material specified in the question.
The specified material is activated charcoal (activated carbon).
Activated charcoal is an adsorbent material used in filtration beds during water treatment.
2
Recall the specific functional role of activated charcoal in water purification.
Activated charcoal physically adsorbs dissolved organic impurities, volatile organic compounds, pigments, and substances responsible for foul tastes and odors.
Its extremely porous structure provides a vast surface area suitable for physical adsorption.
3
Distinguish activated charcoal's role from other water treatment chemicals.
Chlorine sterilizes water, potash alum coagulates suspended particles, and slaked lime adjusts pH or precipitates hardness.
Each chemical reagent added during municipal water treatment has a distinct, specialized role.

Anahtar Kavram

Role of Activated Charcoal in Water Treatment
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Konular

Purification and Treatment of Water for Supply

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