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Wastewater Story — Science STD 7 — Question

Gujarat BoardEnglish MediumSTD 7ScienceWastewater Story1 Mark
MCQ
A septic tank is a$........$
  • A
    Sedimentation tank.
  • B
    Digestion tank.
  • C
    Aeration tank.
  • ✓
    Combination of sedimentation and digestion tank.
✓

Answer

Correct option: D.
Combination of sedimentation and digestion tank.
Septic tank is a combined sedimentation and digestion tank where sewage is retained for one day to two days.
The septic tank digests organic matter and separates solids from the wastewater.

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