manganese greensand

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A resin used to oxidize the soluble iron in water and then to filter it out.
References in periodicals archive ?
The purification system consists of closed aeration and the Manganese Greensand iron filter.
1]) than in Kraavi and the Manganese Greensand filter is not able to reduce the iron content to the level of 0.
The Manganese Greensand filter is used in eight purification systems (Krabi 1, Kraavi, Vommorski, Parksepa, Puiga, Misso, Vastseliina, Kose).
Purification systems with the Manganese Greensand filter (type 1) are not able to reduce the manganese content in water to the required level of 50 [micro]g [L.
2+] oxidation and the Manganese Greensand filter is able to capture only iron compounds.
2 (Keller 2005) when Manganese Greensand is used and 6.