Environment & Ecology · Environmental Engineering
प्लवक (Planktons) कभी-कभी रेत पर एलम फ़्लॉक के उचित संचय को रोककर __________ के सुचारू संचालन में बाधा डालते हैं।
- 1एरेशन (वातन)
- 2सेटलमेंट
- 3अवसादन (sedimentation)
- 4रैपिड ग्रेविटी फ़िल्टर✓
सही उत्तर देखें
रैपिड ग्रेविटी फ़िल्टर
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