![A filter is made up of beds of fine sand, fine gravel and coarse gravel... | Download Scientific Diagram A filter is made up of beds of fine sand, fine gravel and coarse gravel... | Download Scientific Diagram](https://www.researchgate.net/publication/353120836/figure/fig4/AS:1043586019758081@1625821704063/A-filter-is-made-up-of-beds-of-fine-sand-fine-gravel-and-coarse-gravel-73.png)
A filter is made up of beds of fine sand, fine gravel and coarse gravel... | Download Scientific Diagram
![PDF] Effect of composition and depth of filter-bed on the efficiency of Sand-intermittent-filter treating the Industrial wastewater at Haridwar, India | Semantic Scholar PDF] Effect of composition and depth of filter-bed on the efficiency of Sand-intermittent-filter treating the Industrial wastewater at Haridwar, India | Semantic Scholar](https://d3i71xaburhd42.cloudfront.net/fe330e2b32df7e68fab5a874369639310b1e854b/3-Figure1-1.png)
PDF] Effect of composition and depth of filter-bed on the efficiency of Sand-intermittent-filter treating the Industrial wastewater at Haridwar, India | Semantic Scholar
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![Cross section of the tank 4, showing, arrangement of filter bed, made... | Download Scientific Diagram Cross section of the tank 4, showing, arrangement of filter bed, made... | Download Scientific Diagram](https://www.researchgate.net/publication/264555675/figure/fig3/AS:669332296171539@1536592663909/Cross-section-of-the-tank-4-showing-arrangement-of-filter-bed-made-of-sand-charcoal.png)