Chemically Assisted Primary Sedimentation (CAPS) or Chemically Enhanced Primary Treatment (CEPT) consists of adding chemicals in order to increase the coagulation, flocculation and sedimentation of raw urban wastewater. The CAPS process have to be developed in order to assure both increasing in the efficacy of primary sedimentation and avoiding interference with biological treatment processes. The paper was focused on an experimental activity conducted in the wastewater treatment plant (WWTP) of Avellino, in the Campania Region, in Southern Italy. The aim of the performed activity was to verify the economical applicability of CAPS for the treatment of urban wastewater. In the first phase, the inlet wastewater was characterized and the best coagulant and relative dosage were chosen. While, in the second phase, the economical applicability of the CAPS was verified with regard to the studied WWTP. In the light of the performed hypothesis, good results were obtained in economical terms but some technical issues were revealed.

La sedimentazione primaria chimicamente assi-stita è quel processo noto in letteratura scientifica con l’acro-nimo CAPS (chemically assisted primary sedimentation) oanche CEPT (chemically enhanced primary treatment). Sitratta di un processo di natura chimico-fisica in cui l’applica-zione di un reattivo al refluo urbano (da depurare) consente diottenere un incremento del rendimento depurativo della sedi-mentazione primaria senza interferire in modo significativosul funzionamento del trattamento biologico successivo. Inquesto articolo viene illustrata la sperimentazione condottapresso l’impianto di depurazione del Partenio e dell’Alta Valledel fiume Sabato (AV) finalizzata alla verifica dell’applicabili-tà economica della sedimentazione assistita per la depurazio-ne delle acque reflue urbane. La sperimentazione ha previstouna prima fase di caratterizzazione del refluo influente all’im-pianto e di scelta del “miglior” coagulante ed il suo dosaggioottimale ed una seconda fase in cui, con riferimento al depu-ratore oggetto di studio, si è verificata l’applicabilità econo-mica del trattamento. Nell’ambito delle ipotesi considerate sisono ottenuti buoni risultati sulla possibilità di applicare acosti sostenibili il trattamento chimico-fisico studiato, fermorestando che occorre tenere in conto possibili problematichetecniche indotte dall’applicazione del processo

Verifica dell’applicabilità economica della sedimentazione assistita per la depurazione delle acque reflue urbane = Evaluation of economic aspects of chemically assisted primary sedimentation process for urban wastewater treatment plant

De Gisi, Sabino;
2008-01-01

Abstract

Chemically Assisted Primary Sedimentation (CAPS) or Chemically Enhanced Primary Treatment (CEPT) consists of adding chemicals in order to increase the coagulation, flocculation and sedimentation of raw urban wastewater. The CAPS process have to be developed in order to assure both increasing in the efficacy of primary sedimentation and avoiding interference with biological treatment processes. The paper was focused on an experimental activity conducted in the wastewater treatment plant (WWTP) of Avellino, in the Campania Region, in Southern Italy. The aim of the performed activity was to verify the economical applicability of CAPS for the treatment of urban wastewater. In the first phase, the inlet wastewater was characterized and the best coagulant and relative dosage were chosen. While, in the second phase, the economical applicability of the CAPS was verified with regard to the studied WWTP. In the light of the performed hypothesis, good results were obtained in economical terms but some technical issues were revealed.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11589/82686
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