Patent ID: 7332082
Filing Date: 2008-02-19
Classification: C02F,Y02W

Abstract:
1. Method of treating and/or keeping clean water from swimming facilities ( 4 ), using a water treatment system ( 2 ) with at least one first mechanical device and, separate therefrom, at least one biological cleaning device, wherein the water level in the individual cleaning devices ( 5 , 12 ) is kept at different levels and wherein the at least one biological cleaning device has a first and/or a second around filter ( 14 , 19 ), whereby the water ( 1 ) is mechanically pre-cleaned in at least one mechanical cleaning step and is subjected to a biological cleaning process in at least one biological cleaning step, wherein the water ( 1 ) is transported between the cleaning steps by force of gravity and the cleaned water ( 1 ) is optionally returned to the swimming facility ( 4 ).