6533b81ffe1ef96bd1278838

RESEARCH PRODUCT

Comparison between hybrid moving bed biofilm reactor and activated sludge system: a pilot plant experiment

Michele TorregrossaGiorgio ManninaDaniele Di TrapaniGaspare Viviani

subject

Time FactorsEnvironmental EngineeringNitrogenhybrid biofilm reactorPilot ProjectsHMBBRWaste Disposal Fluidmunicipal wastewaterWater PurificationBioreactorsorganic and nitrogen loadbiological treatmentOrganic ChemicalsWater Science and TechnologySettore ICAR/03 - Ingegneria Sanitaria-AmbientaleSewageMoving bed biofilm reactorSettore ICAR/02 - Costruzioni Idrauliche E Marittime E IdrologiaEnvironmental engineeringEquipment DesignnitrificationCarbonMixed liquor suspended solidsQuaternary Ammonium CompoundsWaste treatmentActivated sludgePilot plantItalyWastewaterBiofilmsEnvironmental scienceSewage treatmentWater Pollutants ChemicalWaste disposal

description

The paper presents the comparison between the traditional activated sludge system (AS) and a hybrid moving bed biofilm reactor (HMBBR). In particular, an experimental campaign has been carried out at the WWTP in Palermo (Italy), on a pilot plant consisting of two pre-anoxic schemes. The aerated tank of the HMBBR line was filled with suspended carriers (AnoxKaldnes™ K1), with a 30% filling ratio. The hydraulic load of the HMBBR line was increased up to two times the AS one. Further, in order to distinguish the additional contribution of the attached biomass for the HMBBR system, in the two lines the Mixed Liquor Suspended Solids (MLSS) was maintained as equal as possible. The monitoring period lasted three months during which several parameters were monitored. The obtained results showed a good treatment ability of the HMBBR system, referring to the organic matter removal as well as to the ammonium removal. In particular, in spite of the increase of the hydraulic load for the HMBBR line, the two systems showed a similar performance in terms of both organic and nitrogen removal. The results demonstrate the higher treatment capacity of the HMBBR addressing such system as an effective technology for the upgrading of overloaded wastewater treatment plants.

yearjournalcountryeditionlanguage
2010-02-26Water Science and Technology
https://doi.org/10.2166/wst.2010.834