Abstract

The enhanced removal of organic compounds from a pharmaceutical wastewater resulting from the productionof an anti-viral drug (acyclovir) was obtained by employing a membrane bioreactor (MBR) and anozonation system. An integrated MBR-ozonation system was set-up by placing the ozonation reactor inthe recirculation stream of the MBR effluent. A conventional treatment set-up (ozonation as polishingstep after MBR) was also used as a reference. The biological treatment alone reached an average CODremoval of 99%, which remained unvaried when the ozonation step was introduced. An acyclovir removalof 99% was also obtained with the MBR step and the ozonation allowed to further remove 99% of theresidual concentration in the MBR effluent. For several of the 28 organics identified in the wastewaterthe efficiency of the MBR treatment improved from 20% to 60% as soon as the ozonation was placed inthe recirculation stream. The benefit of the integrated system, with respect to the conventional treatmentset-up was evident for the removal of a specific ozonation by-product. The latter was efficiently removedin the integrated system, being its abundance in the final effluent 20-fold lower than what obtained whenozonation was used as a polishing step. In addition, if the conventional treatment configuration isemployed, the same performance of the integrated system in terms of by-product removal can only beobtained when the ozonation is operated for longer than 60 min. This demonstrates the effectivenessof the integrated system compared to the conventional polishing configuration.

Autore Pugliese

• Pollice Alfieri , Salerno Carlo , Laera Giuseppe , Mascolo Giuseppe

Tutti gli autori

• MASCOLO G.; LAERA G.; POLLICE A.; CASSANO D.; SALERNO C.; LOPEZ A.

Titolo volume/Rivista

Chemosphere

Anno di pubblicazione

2010

ISSN

0045-6535

ISBN

Non Disponibile

Numero di citazioni Wos

Nessuna citazione

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Numero di citazioni Scopus

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Ultimo Aggiornamento Citazioni

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Settori ERC

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Codici ASJC

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