Computer · Environmental Engineering
निम्नलिखित में से कौन सा रैपिड सैंड फिल्टर (rapid sand filters) की सही विशेषता नहीं है?
- 1कुशल संचालन की आवश्यकता होती है
- 2सघन डिजाइन (Compact design)
- 3बैकवाशिंग (backwashing) की आवश्यकता होती है
- 4कम निस्पंदन दर (0.1-0.2 m³/m²/hr) पर कार्य करता है✓
सही उत्तर देखें
कम निस्पंदन दर (0.1-0.2 m³/m²/hr) पर कार्य करता है
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