An improved collector hood for a sedimentation tank. The collector hood is disposed within the tank and separates the tank into an upper reaction compartment and a lower settling compartment. The collector hood has the shape of an inverted funnel including a tubular upper portion connected to an...http://www.google.fr/patents/US5718824?utm_source=gb-gplus-shareBrevet US5718824 - Collector hood for sedimentation tank
