Device, of modular construction, for the multistage purification of organically contaminated aqueous effluents

摘要

Device characterised in that it consists of two oval-shaped ponds arranged concentrically, namely of the oval-shaped outer pond 1 and of the oval-shaped inner pond 2 in which at least one modular unit 4 is arranged, it being specified that it is the peripheral activation gully 3 situated between the walls 11 and 12 of the outer pond 1 and of the walls 21 and 22 of the inner pond 2 which is used as peripheral activation pond. The invention relates to a modular system, flexible and of small bulk, for biological purification of aqueous effluents. <IMAGE>