By what is waste materials, like human excreta
from the sewage brought in a big tank of the
wastewater treatment plant, removed ?
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3
Answer:
During the primary treatment of sewage, after its passage through bar filters and a grit and sand tank, the liquid material is held in large sedimentation tanks. The solid waste then settles to the bottom of the tank, from where it is removed using a scrubber. This material at the bottom of the tank is known as sludge.
Answered by
2
Answer:
During the primary treatment of sewage, after its passage through bar filters and a grit and sand tank, the liquid material is held in large sedimentation tanks. The solid waste then settles to the bottom of the tank, from where it is removed using a scrubber. This material at the bottom of the tank is known as sludge.
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