LAYERED SHEET FOR GAS SUPPLY IN WATER TREATMENT

摘要

Described is an apparatus (70) for the removal of organic substances and/or nitrogen sources from an aqueous medium comprising: i) a layered sheet construction (10) comprising a) at least one porous, gas permeable, water impermeable layer and b) a gas delivery layer attached to a layer of part a) on which there are a plurality of flow channels through which gas can be conveyed to the layer of part a) and ii) a gas inlet (71), the gas being delivered through the permeable layer a).