The Retrofitting of an Extended Aeration Process to Optimise Biological Nitrogen Removal in Liquid Industrial Wastes

摘要: The paper deals with the optimization of platforms for liquid industrial wastes and wastewater treatment; in particular, retrofitting an existing extended aeration process its conversion to biological nitrogen removal are performed. Three different experimental phases carried out order select best final solution. First, full scale plant performances analysed; then, a nitrification/pre-denitrification separate biomass is experimented after solving structural problems connected air distribution flow equalisation. This approach reveals non satisfactory two reasons: limited nitrification first step, exerting role simultaneous denitrification process, low nitrates feedback avoid hydraulic overloading secondary settlers. third investigated solution alternating two-step oxic-anoxic biomass. The...