| 摘要 |
<p>A method at water supply and sewerage systems where purified water is supplied via one or several supply places (1) for waste etc., which water assists in the removal and transport of supplied waste from the place of supply, and where the resulting wastewater is purified. The method is especially characterized in that the wastewater is purified to a limited extent and recycled to the supply place(s) in a substantially closed and very local system. The invention also relates to a water supply and sewerage system for carrying out the method.</p> |
