05798044 is referenced by 15 patents and cites 14 patents.

Described is a two-stage sewage treatment plant (10), in particular for domestic sewage, wherein the first biological purification stage (12) is dimensioned so that besides the carbon load, the mean nitrogen load is maximally degraded. Any peak loads that may appear are degraded in the second biological purification stage (13). This makes possible a space-saving construction and an economical operation. The second biological purification stage (13) is always a two-stage filtering installation with a filter stage (20) for nitrification and a filter stage (21) for denitrification. The first biological purification stage (12) can be an activated sludge stage as per A 131, a pure oxygen activated sludge or likewise a two-stage filtering installation.

Title
Method for sewage treatment
Application Number
8/513869
Publication Number
5798044
Application Date
September 15, 1995
Publication Date
August 25, 1998
Inventor
Jean Marie Rovel
Rueil-Malmaison
FR
Ingulf Schroeter
Stuttgart
DE
Andreas Strohmeier
Leonberg
DE
Agent
Jones Tullar & Cooper P C
Assignee
Philipp Muller
DE
IPC
C02F 3/06
C02F 3/30
View Original Source