Pubblicazioni

Autori:

Battistoni, P.; Fatone, Francesco; Cola, E.; Pavan, P.

Titolo:

Alternate cycles process for municipal wwtp upgrading: ready for widespread application?

Anno:

2008

Tipologia prodotto:

Articolo in Rivista

Tipologia ANVUR:

Articolo su rivista

Lingua:

Inglese

Formato:

A Stampa

Referee:

Sì

Nome rivista:

INDUSTRIAL AND ENGINEERING CHEMISTRY RESEARCH

ISSN Rivista:

0888-5885

Numero o Fascicolo:

47

Intervallo pagine:

4387-4393

Parole chiave:

wastewater treatment; alternate cycles process; process control automation; activated sludge

Breve descrizione dei contenuti:

The interest in the biological alternating anoxic/oxic reactors to upgrade existing wastewater treatment plants has been recently renewed, thanks to the use of reliable automatic control systems. To discuss the treatment capabilities of the alternating systems, with particular relation to the municipal WWTPs’ upgrading, this study exploits the experience gained in this field through numerous years of R&D. At first a pilot plant study and then a full scale alternating plant were used to supply experimental data that support the final schematic of methodology. The pilot experimentation was based in the real loading conditions of the italian municipal WWTPs. Real municipal sewage was used to feed the plant in six steady-state periods, applying nitrogen loading rates ranging from 0.03 to 0.1 kg N m-3 d-1. Major problems with the nitrogen removal performances occurred in the case of overaeration of the activated sludge tank, corresponding to influent low-loaded wastewater. The experimental durations per day of the anoxic and oxic phases were in good agreement with a simplified mathematical model, which was validated by full scale data and was finally considered useful for the upgrading design. The maximum treatment capacity of the process in terms of nitrogen loading rates was estimated in the range 0.10-0.16 kg N m-3 d-1 according to the different rates for biological nitrification and denitrification, which influence the oxic and anoxic durations per day. Moreover, the reliability of the control device used for the experimentation was proved through the statistic analyses of the performed cycles, which were in agreement with the actual nitrogen removal performances. Finally, the schematic of methodology shows how easy and consolidated the upgrading of existing wastewater treatment plants by the alternate cycles process could be.

Pagina Web:

http://pubs.acs.org/cgi-bin/abstract.cgi/iecred/2008/47/i13/abs/ie070109g.html

Id prodotto:

42234

Handle IRIS:

11562/316034

depositato il:

7 luglio 2008

ultima modifica:

14 novembre 2022

Citazione bibliografica:

Battistoni, P.; Fatone, Francesco; Cola, E.; Pavan, P., Alternate cycles process for municipal wwtp upgrading: ready for widespread application? «INDUSTRIAL AND ENGINEERING CHEMISTRY RESEARCH» , n. 47 , 2008 , pp. 4387-4393

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