Back flushing of multi-layer filters, in swimming pools and water treatment, uses a formulation combining a solution of a copolymerisate of acroleine and formaldehyde with a polyoxy carbon salt for cleaning and disinfection

摘要

The back flushing of water filters for cleaning and disinfection, for swimming pools and in the treatment of drinking and waste water, uses the combination of a watery solution of a copolymerisate of acroleine and formaldehyde with a polyoxy carbonic acid salt (C 3H 4O 2C 3H 4O) xwith metal ions. The water level is lowered to the upper edge of the filter material. Air is flushed through the filter followed by water flushing and the first filtrate is taken off in waste channels.