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Sand filters are used as a step in the water treatment process of water purification.
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Explore the main themes, entities and connections around Sand filter. Start with the topic map, then use the sections below for research and deeper semantic analysis.
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sand filter filters water bed used slow solids particulate filtration pressure process rapid treatment flow use particles purification also backwashing
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Sand filter | is a | newest operating regime | 0.90 | text |
| settling tanks | instance of | there are passive and active devices for causing solid-liquid separation | 0.80 | text |
| self-cleaning screen filters | instance of | there are passive and active devices for causing solid-liquid separation | 0.80 | text |
| hydrocyclones | instance of | there are passive and active devices for causing solid-liquid separation | 0.80 | text |
| centrifuges.There are several kinds of depth filters | instance of | there are passive and active devices for causing solid-liquid separation | 0.80 | text |
| some employing fibrous material | instance of | there are passive and active devices for causing solid-liquid separation | 0.80 | text |
| others employing granular materials | instance of | there are passive and active devices for causing solid-liquid separation | 0.80 | text |
| settling.The depth of the sand bed is recommended to be around 0.6 | instance of | but if significant amounts of large solids are in the feed they need to be removed upstream of the sand bed filter by a process | 0.80 | text |
| Giardia | instance of | viruses and cysts | 0.80 | text |
| Cryptosporidium | instance of | viruses and cysts | 0.80 | text |
| filter ripening | instance of | Aforementioned processes | 0.80 | text |
| backwashing influence not only the water quality but also the time needed for the full treatment | instance of | Aforementioned processes | 0.80 | text |
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