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प्रश्न
Removal of suspended, floating, coarse and solid particles in sewage treatment is called ______.
विकल्प
Physical treatment
Preliminary treatment
Biological treatment
Tertiary treatment
MCQ
रिक्त स्थान भरें
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उत्तर
Removal of suspended, floating, coarse and solid particles in sewage treatment is called Preliminary treatment.
Explanation:
Preliminary (or pretreatment) removes coarse, floating and suspended solids (screens, grit chambers, skimmers) before primary/biological treatment.
shaalaa.com
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