The EUROPELEC suction bridge is intended for installation in all circular sedimentation tanks with flat or slightly sloping bottoms. It is generally used for treating municipal and industrial wastewater containing heavy matter that may settle quickly and from which it is important to be able to extract sludge as it forms.
The effluent is carried, through a steel or concrete influent well, to the central diffuser which calls for downward redirection. Distributed thus, as the effluent passes through the structure, decantable particles are freed and settle on the bottom where they are picked up by a V-shaped scraper system.
In the groove on each scraper, a tube sucks up the sludge using hydrostatic pressure and carries it to the gutter suspended under the bridge. The sludge collected in the gutter is continuously driven back by a siphon to a central sludge well. From there, a fixed pipe carries it away to the next stage of treatment. The clarified effluent overflows from the tank.