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ATB decanters are suitable for discharging the treated wastewater after the cleaning process. The decanters are floating and designed in such a way that the clear water discharge takes place below the water level. Only the clear water layer is discharged without disturbing the floating and bottom sludge. If clear water discharge by gravity is not possible, pumps can be used to assist the process.
Decanting describes the sludge-water separation step in the SBR process. In the SBR process, the clear water discharge / decanters assume the function of the secondary clarifier and are therefore of absolutely decisive importance for the effluent quality. Their function is essentially determined by the solids content in the effluent of the treatment plant. ATB decanters have been specially designed to meet the process-specific requirements of the SBR process.
The floating design in combination with a submerged and completely horizontally aligned inflow area ensures that only the clear water layer reaches the effluent of the wastewater treatment plants. Turbulences are excluded by the very conservative design of the aggregates. Different design options with and without own pressure increase allow the adaptation of the units to different hydraulic and wastewater technical specifications.
