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SchmutzdeckeSchmutzdecke (German, "grime or filth cover", sometimes spelt schmutzedecke) is a complex biological layer formed on the surface of a slow sand filter. The schmutzdecke is the layer that provides the effective purification in potable water treatment, the underlying sand providing the support medium for this biological treatment layer. Additional recommended knowledgeThe composition of any particular schmutzdecke varies, but will typically consist of a gelatinous biofilm matrix of bacteria, fungi, protozoa, rotifera and a range of aquatic insect larvae. As a schmutzdecke ages, more algae tend to develop, and larger aquatic organisms may be present including some bryozoa, snails and annelid worms. |
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Schmutzdecke". A list of authors is available in Wikipedia. |