title: An innovative technology based on aerobic granular biomass for treating municipal and/or industrial wastewater with low environmental impact.
abstract: The paper reports the results of an investigation carried out at lab scale to assess the effectiveness of an innovative technology (SUPERBIO) for treating municipal and/or industrial wastewater. When this technology was applied for treating municipal wastewater, the results showed that even at maximum organic load (i.e. 7 kg COD m(-3) d(-1)), the COD in the treated effluent was lower than 50 mg L(-1). In addition, both ammonia and TKN removal efficiencies resulted in higher than 87% up to an organic load of 5.7 kg COD m(-3) d(-1) corresponding to a nitrogen load of 0.8 kg TKN m(-3) d(-1). Very satisfactory process performances also resulted during tannery wastewater treatment, when a chemical oxidation step (i.e. ozonation) was inserted in the treatment cycle of SUPERBIO. In such an instance, at organic and nitrogen loadings of 3 kgCOD m(-3) d(-1) and 0.20 kg N m(-3) d(-1), COD, NH4+ -N and TSS average removals were 96, 99 and 98%, respectively. Finally, during the whole experimentation, SUPERBIO was always characterised by a very low sludge production. Such a result was ascribed mainly to the characteristics of biomass that grew in the form of very dense granules (i.e. 130 gVSS L(Biomass)(-1) allowing a biomass concentration as high as 50-60 gTSS l(bed)(-1) to be achieved.
authors.affiliation: Istituto di Ricerca Sulle Acque C.N.R., Via Reno 1, 00198 Roma, Italy. ramadori@irsa.rm.cnr.it
authors.forename: R
authors.initials: R
authors.lastname: Ramadori
authors.forename: C
authors.initials: C
authors.lastname: Di Iaconi
authors.forename: A
authors.initials: A
authors.lastname: Lopez
authors.forename: R
authors.initials: R
authors.lastname: Passino
mesh_terms: D000332:Aerobiosis; D018533:Biomass; D007220:Industrial Waste; D010126:Ozone / Q000737:chemistry; D012722:Sewage / Q000737:chemistry* / Q000382:microbiology*; D013633:Tanning; D014874:Water Pollutants, Chemical / Q000032:analysis*; D018508:Water Purification / Q000295:instrumentation / Q000379:methods*
chemical_list: D007220:Industrial Waste; D012722:Sewage; D014874:Water Pollutants, Chemical; D010126:Ozone