What happens with the degradation of substrates in activated sludge if you add a clarifier. The...

What happens with the degradation of substrates in activated sludge if you add a clarifier. The activated sludge retention time is 0.5 days and the sludge age is 2 days. Also, what if the sludge age is 4 days

Expert Solution

Activated sludge process is a type of wastewater treatment.

Atmospheric air or in rare cases pure oxygen is introduced to a mixture of primary treated or screened sewage.

Purpose

In a sewage (or industrial wastewater) treatment plant, the activated sludge process 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 low in dissolved or suspended material

A rational loading parameter which has found wider acceptance and is preferred is specific substrate utilization rate, q, per day.

q= Q (S_O - S_e)
V X

Ally Wells answered 8 months ago

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