Treatment of effluents comprises biological pretreatment of effluents using bacterial bed, and biological treatment of nitrification-denitrification of clarification sludge obtained at an exit of the bed using vertical-flow reed bed filter

摘要

The treatment of effluents comprises a biological pretreatment of the effluents using bacterial bed, and a biological treatment of nitrification-denitrification of a clarification sludge obtained at an exit of the bacterial bed using vertical-flow reed bed filter. The clarification sludge has a carbon source for nitrification and denitrification. In permanent operating regime, a nitrification-denitrification filter comprises a lower inundated zone and an upper inundated zone. The treatment of effluents comprises a biological pretreatment of the effluents using bacterial bed, and a biological treatment of nitrification-denitrification of a clarification sludge obtained at an exit of the bacterial bed using vertical-flow reed bed filter. The clarification sludge has a carbon source for nitrification and denitrification. In permanent operating regime, a nitrification-denitrification filter comprises a lower inundated zone and an upper inundated zone, on which a biological anaerobic denitrification treatment and a biological aerobic denitrification treatment, are carried out respectively. The height of the inundated zone is greater than or equal to the height of its non-inundated zone. An independent claim is included for a device for waste processing.