Accademia La Maison de la Danse Srld Italy

Industry nr. 1 produces about 18.000 m3d-1 wastewater with 2.500–3.500 mg/L COD. The wastewater treatment

plant (picture 1) is made of a coarse screen, a primary settler, a fine screen, a cooling system, dosage of nutrients

(nitrogen and phosphorus salts), a biological section and a final clarifloculation. The biological section has a first

aerated pure biofilm MBBR filter media

with 2.500 m3 volume filled with 40% NatrixTM – O carriers, an activated sludge oxidation tank with 7.500

m3 volume and sludge concentration 4-6 kgSSTm-3, and a secondary settler. The plant must remove at least 90% of COD, 99%

of BOD5; maximum pollutant concentrations in final effluent are: TSS < 50 mg/L, tot-N < 4.7 mg/L, P < 0.3 mg/L.