Wednesday, August 27, 2008

Schmutzdecke

Schmutzdecke (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.
at
Labels: , ,

No comments:

Post a Comment

Subscribe to: Post Comments (Atom)

Nine holes

  Nine holes is a two-player abstract strategy game from different parts of the world and is centuries old. It was very popular in Englan...

  • abstemious
    Marked by, or spent in, abstinence ; as, an abstemious life.
  • Nureongi
    Nureongi (누렁이) and Hwangu (황구; 黃狗) are Korean terms meaning "Yellow Dog" used to refer to tannish mongrel or landrace of dog in...
  • acrolect - mesolect - basilect
    Three portions of the post-creole continuum : acrolect ( linguistics ) The variety of speech that is considered the standard form. m...