Process for the biological treatment of waste water using microorganisms

An Apparatus for the biological treatment of waste water using microorganisms whose living conditions are maintained by addition of oxygen into a contact path, comprising an underwater support frame in which a double-walled duct is arranged as a contact path such that the duct is placed angularly towards a surface of the water, and the duct having means for holding air bubbles to prevent the premature rise of the air bubbles and holds the contaminated waste water added by means of an aerator providing air at a beginning of the contact path, a suction point at an end of the contact path, the suction point being connected via a telescopable fresh organism pipe with the aerator, a connection piece for connecting the aerator to a suction pipe at the beginning of the contact path, the suction pipe having a diameter at one end smaller than that of another end, and the other end of the suction pipe being connected to a flowing-in opening located at a distance from the aerator contrary to the flow direction, for supplying contaminated water to the aerator before the water actually reaches the contact path.

An Apparatus for the biological treatment of waste water using microorganisms whose living conditions are maintained by addition of oxygen into a contact path, comprising an underwater support frame in which a double-walled duct is arranged as a contact path such that the duct is placed angularly towards a surface of the water, and the duct having means for holding air bubbles to prevent the premature rise of the air bubbles and holds the contaminated waste water added by means of an aerator providing air at a beginning of the contact path, a suction point at an end of the contact path, the suction point being connected via a fresh organism pipe with the aerator, a connection piece for connecting the aerator to a suction pipe at the beginning of the contact path, the suction pipe having a diameter at one end smaller than that of another end, and the other end of the suction pipe being connected to a flowing-in opening located at a distance from the aerator contrary to the flow direction, for supplying contaminated water to the aerator before the water actually reaches the contact path, wherein the suction point is equipped with a vacuum pump near the end of the contact path and with plural discharge nozzles for discharging the microorganisms in a couterstream direction at the beginning of the contact path.

An Apparatus for the biological treatment of waste water using microorganisms whose living conditions are maintained by addition of oxygen into a contact path, comprising an underwater support frame in which a double-walled duct is arranged as a contact path such that the duct is placed angularly towards a surface of the water, and the duct having means for holding air bubbles to prevent the premature rise of the air bubbles and holds the contaminated waste water added by means of an aerator providing air at a beginning of the contact path, a suction point at an end of the contact path, the suction point being connected via a fresh organism pipe with the aerator, a connection piece for connecting the aerator to a suction pipe at the beginning of the contact path, the suction pipe having a diameter at one end smaller than that of another end, and the other end of the suction pipe being connected to a flowing-in opening located at a distance form the aerator contrary to the flow direction, for supplying contaminated water to the aerator before the water actually reaches the contact path, wherein the fresh organism pipe is constructed telescopically with a drive coordinated therewith.