The Coldep company offers economical, alternative filtration technology, notably from Ifremer.
A pool and a strange column. Air, but no filter. At the outlet, however, is depolluted water, suitable for reuse. Around a hundred installations like this, some of large size, with a treatment capacity of 550 m3/h, are in service around the world, in the fields of aquaculture and shellfish farming and aquariums open to the public.
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