![Surface Water Treatment by Roughing Filters - A Design, Construction and Operation Manual (SANDEC - SKAT, 1996, 180 p.): Part 1: General aspects of roughing filter application: 5. Bacteriological water quality improvement: 5.1 Slow sand filtration Surface Water Treatment by Roughing Filters - A Design, Construction and Operation Manual (SANDEC - SKAT, 1996, 180 p.): Part 1: General aspects of roughing filter application: 5. Bacteriological water quality improvement: 5.1 Slow sand filtration](https://www.nzdl.org/gsdl/collect/cdl/archives/HASH0116/5bbf8a8d.dir/p023.jpg)
Surface Water Treatment by Roughing Filters - A Design, Construction and Operation Manual (SANDEC - SKAT, 1996, 180 p.): Part 1: General aspects of roughing filter application: 5. Bacteriological water quality improvement: 5.1 Slow sand filtration
![Sketch of the current design of the slow sand filtration system being... | Download Scientific Diagram Sketch of the current design of the slow sand filtration system being... | Download Scientific Diagram](https://www.researchgate.net/publication/264457329/figure/fig4/AS:667811357655042@1536230043139/Sketch-of-the-current-design-of-the-slow-sand-filtration-system-being-tested-with-the.png)
Sketch of the current design of the slow sand filtration system being... | Download Scientific Diagram
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