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Revamping of a Full-Scale Membrane Plant for Landfill Leachate Pretreatment Using Partial Nitritation.
Palli, Laura; Tuci, Francesca; Franca, Letizia Macellaro La; Fibbi, Donatella; Gori, Riccardo.
Affiliation
  • Palli L; Gestione Impianti Depurazione Acque Spa, Via di Baciacavallo 36, 59100 Prato, Italy.
  • Tuci F; Department of Civil and Environmental Engineering, University of Florence, Via S. Marta 3, 50139 Florence, Italy.
  • Franca LM; Gestione Impianti Depurazione Acque Spa, Via di Baciacavallo 36, 59100 Prato, Italy.
  • Fibbi D; Gestione Impianti Depurazione Acque Spa, Via di Baciacavallo 36, 59100 Prato, Italy.
  • Gori R; Department of Civil and Environmental Engineering, University of Florence, Via S. Marta 3, 50139 Florence, Italy.
Membranes (Basel) ; 14(5)2024 May 14.
Article in En | MEDLINE | ID: mdl-38786949
ABSTRACT
This paper describes a case study involving a revamping of a full-scale membrane bioreactor that treats landfill leachate and other liquid wastes. The main change was the introduction of nitritation/denitritation in alternating cycles instead of the classic denitrification/nitrification process, together with the installation of fine bubble diffusers, a reduction in the volume of the biological compartment, and an increase in the equalization volume. The most significant results were obtained for the biological compartment, with a decrease in the specific energy consumption of 46.6%. At the same time, the removal efficiency of COD, BOD, and TN substantially remained the same before and after plant revamping, while the removal efficiency of TP increased over the years, reaching an average value of almost 71%. Regarding the ultrafiltration unit, the specific flux (or permeability) was characterized by an increasing trend. At the same time, the specific energy consumption of this section decreased by 9.4%. These results led to the conclusion that the changes introduced with the revamp led to a more stable process, a reduction in membrane fouling, and important energy savings.
Key words

Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Membranes (Basel) Year: 2024 Document type: Article Affiliation country: Italy Country of publication: Switzerland

Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Membranes (Basel) Year: 2024 Document type: Article Affiliation country: Italy Country of publication: Switzerland