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Tardigrade
Question
Biology
The primary treatment of waste water involves the removal of
Q. The primary treatment of waste water involves the removal of
5285
230
Microbes in Human Welfare
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A
Dissolved impurities
30%
B
Stable particles
47%
C
Toxic substances
17%
D
Harmful bacteria
6%
Solution:
The primary treatment involves physical removal of particles from the sewage through filtration and sedimentation. These are removed initially by sequential filtration which removes the floating debris and then grit is removed by sedimentation.