Activated Sludge - Purpose

Purpose

In a sewage (or industrial wastewater) treatment plant, the activated sludge process is a biological process that can be used for one or several of the following purposes:

  • oxidizing carbonaceous matter: biological matter.
  • oxidizing nitrogeneous matter: mainly ammonium and nitrogen in biological materials.
  • removing phosphate.
  • driving off entrained gases carbon dioxide, ammonia, nitrogen, etc.
  • generating a biological floc that is easy to settle.
  • generating a liquor that is low in dissolved or suspended material.

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