| 摘要 |
<p>The present invention relates to a plant unit for water purification which plant unit is placed downstream of a septic tank. Numerous private housings are not connected to public sewer systems and their waste water is therefore not treated in a public purifying plant. Instead these housings rely on their individual solutions on the purification issue. A purification plant according to the invention comprises a pre-precipitation septic tank and a purification unit consisting of an upper part (21) comprising two separated aerated compartments (6, 9) i.e. a first and a second compartment provided with bio filters and two separated sedimentation compartments (7, 10), a first and a second, placed down- stream respectively of the first and second aerated compartments. The purification unit has a lower part (20) placed below one or both aerated compartments (6,9) which lower part (20) comprises a receiving section provided with an inlet (2) holding low-oxygen containing waste water from the pre- precipitation tank.</p> |
