C - Chemistry – Metallurgy – 02 – F
Patent
C - Chemistry, Metallurgy
02
F
C02F 3/30 (2006.01)
Patent
CA 2179575
A process and a system for the purification of waste water in several successive stages includes a first stage for anaerobic treatment of the waste water, a second stage for aerobic treatment of the waste water, a third stage for clarification and sedimentation of the waste water with a sludge return, and.an arrangement for controlling the residence time of the waste water in the anaerobic stage by varying the volume of the anaerobic stage.
Gowling Lafleur Henderson Llp
Nordenskjold Reinhart von
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