Installation for purification of effluents, such as domestic sewage

摘要

An installation for the purification of effluents, has a rake (0) an aerated sand trap (1), and adsorption stage (2), a culturing stage (3) and a final clarification stage (4). The discharge from adsorption stage (2) also passes through an intermediate clarification stage (5). No provision is made for sludge recycling between the adsorption stage (2) and the culturing stage (3). The tank aeration stage is followed by a moist biotope (7).