Question

Water ft
sludge
allowin
from t
Fig. 18.6: A flow chart on the various stages involved in sewage treat
· and recall
Fill in the blanks.
1. The kinds of materials present in the wastewater are called C
2.
are the major cause of water pollution
3. Water is used as a coolant in the
4. The main sewer pipelines are called
5. Aerobic bacteria feed on organic matter and produce​

Answer 1

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