Computer · Environmental Engineering
बैकवाशिंग (Backwashing) का उपयोग मुख्य रूप से किस फिल्टर को साफ करने की विधि के रूप में किया जाता है?
- 1द्रुत और मंद दोनों बालू फिल्टर
- 2क्षैतिज बालू फिल्टर (Horizontal sand filter)
- 3द्रुत बालू फिल्टर (Rapid sand filter)✓
- 4मंद बालू फिल्टर (Slow sand filter)
सही उत्तर देखें
द्रुत बालू फिल्टर (Rapid sand filter)
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