Patent ID: 6261443
Filing Date: 2001-07-17
Classification: E03F,Y10S,Y10T

Abstract:
A drain water system having a section located in a building with a first container arranged to receive first drain water contaminated to a relatively high degree, and a second container arranged to receive second drain water normally contaminated to a lower degree, characterized in that the drain water system has a main drain water conduit for a plurality of buildings each provided with one said section, the first and second containers are each connected to the main drain water conduit via respective conduits (10-12), said main drain water conduit leading to a plurality of stations comprising a first and a second station to receive the first and second drain waters, respectively, an adjusting apparatus is arranged to discharge drain water from said first containers into the main drain water conduit and to transport drain water therein to said first station during first time periods while simultaneously preventing discharging of drain water from the second containers into the main drain water conduit and to discharge drain water from the second containers into the main drain water conduit and to transport drain water therein to the second station during second time periods while simultaneously preventing discharging of drain water from the first container into the main drain water conduit.