Sewage treatment plant, comprises sand trap, pumping station, and two clarifiers, where sedimentation tank and connectable blower are also provided

摘要

The sewage treatment plant comprises a sand trap (1), a pumping station, and two clarifiers. A sedimentation tank and a connectable blower are also provided. The sand trap is constructed with an inlet (10) as an additional downstream mixing tank (5), in which another recirculated sludge pipe (15) is connected. The two clarifiers are constructed as a biological activated sludge tank, where the grit chamber is connected with downstream mixing tank over an overflow (11) in a biological activation tank (2). An independent claim is also included for a method for sewage treatment, which involves injecting the sewage in the clarifiers in a sewage treatment plant.