Ground water gas stripping - has further injector tubes between feed and mantle tubes for a further stripping zone for heavily soiled water

摘要

The assembly for the cleaning of ground water by gas stripping, especially with air, has at least one additional injector tube (9a,9B) opening into the ring gap between the feed tube (7) and mantle tube (12), At the lower end (8), at the air outlet, they form a further stripping zone (4a,4b) in a cascade sequence after the first stripping zone (4), between the water entry (6) and outlet (11). The stripping zones (4,4a,4b) pref. have the same structure, working coaxially within each other. The end section (8) for the air outlet partially pref. overlaps the water outlet (11) in the mantle tube (12), as seen radially. A number of injector tubes (9a,9b) open into the ring zone (2a), equidistantly round the assembly, and at the same gap from the neighbouring ring walls. USE/ADVANTAGE - The assembly is for cleaning well water, and the like, by gas stripping and pref. with air. The construction gives an effective cleaning action to heavily soiled water,d to give usable water