Importance

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Abstract

Device for treating water comprising a solid filter drum. The invention relates to a device for treating water comprising:—a biological treatment zone (13) housing a plurality of biological discs (16) mounted on a shaft (17) that can be turned, —a filtration zone (14) housing a filter drum (20) mounted on the same shaft as the said biological discs (16), —conveying means (39) for conveying biologically treated water originating from said biological treatment zone (13) into said filter drum (20), —means for unplugging said filter drum (20), which means are positioned on the outside of said filter drum (20), —sludge collection means (24) positioned inside said filter drum (20) facing said unplugging means and connected to a discharge line (28, 29, 30) that discharges said sludge from said filter drum (20). According to the invention, the sides of said filter drum (20) are closed by solid sidewalls (22, 23), and said discharge line (28, 29, 30) comprises a portion (30) which extends along the axis of said shaft (17) through a first of said sidewalls (23) mounted to rotate about said axis, the second sidewall (22) of said filter drum (20) being secured to said shaft (17).

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First Claim