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Granular filtration

453 bytes added, 20:50, 18 May 2012

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[[Image:granular high density carbon.jpg|thumb|right|250px|Granular, high-density carbon.]]

[[Image:filter sand.jpg|thumb|right|250px|Filter sand, supplied in bags and pallet packages. Photo: [http://en.eijkelkamp.com/products/water/hydrological-research/groundwater-monitoring-pipes/filter-sand/filter-sand.htm Eijkelkamp Agrisearch Equipment BV.]

 

The filter sand, consisting of 99.5% SiO2, is extremely low in trace metals and polycyclic aromatic hydrocarbons. This makes our filter sand the best sand available for monitoring well systems.

 

In water treatment, granular filtration is a process where water flows through granular material (often sand) while suspended solids (sand, clay, iron and aluminum flocs) are retained, substances are biochemically decomposed and pathogenic microorganisms (bacteria, viruses, protozoa) are removed.

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