US PATENT SUBCLASS 210 / 615
.~.~ Utilizing contact surfaces supporting microorganism (e.g., trickling filter, etc.)

Current as of: June, 1999
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210 /   HD   LIQUID PURIFICATION OR SEPARATION

600  DF  PROCESSES {14}
601  DF  .~ Treatment by living organism {13}
615.~.~ Utilizing contact surfaces supporting microorganism (e.g., trickling filter, etc.) {2}
616  DF  .~.~.~> Particulate media {1}
619  DF  .~.~.~> Rotating contactor

DEFINITION

Classification: 210/615

Utilizing contact surfaces supporting micro-organism (e.g., trickling, filter, etc.):

(under subclass 601) Process wherein the liquid is treated with solid surfaces which support the living organisms.

SEE OR SEARCH THIS CLASS, SUBCLASS:

150+, for gas-liquid contact means of the trickling-filter type; see the search notes thereunder.