ZIB

Treffer pro Seite

Treffer 1 - 2 | 2 Treffer

Sortierung

Digitale Medien

Effects of operating parameters on performances of nitrification and denitrification processes (2000)

Dinçer, Ali R. ; Kargi, Fikret

Springer

Bioprocess engineering 23 (2000), S. 75-80

zur Merkliste hinzufügen auf der Merkliste

Details

ISSN: 0178-515X

Quelle: Springer Online Journal Archives 1860-2000

Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung

Notizen: Abstract Nitrification and denitrification of synthetic wastewater was studied by using two reactors in series. An activated sludge unit was used for nitrification followed by a downflow biofilter (packed column) for denitrification. A glucose solution was fed to the denitrification column to supply carbon source. Effects of important process variables such as sludge age, hydraulic residence time and feed ammonium concentration on system's performance were investigated. Effluent ammonium–nitrogen (NH4–N) concentration decreased with increasing sludge age and hydraulic residence time and remained constant for sludge age and hydraulic residence times greater than 12 d and 15 h, respectively. Feed ammonium–nitrogen concentration above 200 mg/l resulted in significant levels of NH4–N in the effluent at θ c = 15 d and θH = 12 h in nitrification. Performance of denitrification stage was not satisfactory for feed NO3–N concentrations above 150 mg N/l resulting in significant effluent NO3–N levels at hydraulic residence time of θH = 6 h.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/s004499900126

Permalink

Bibliothek	Standort	Signatur	Band/Heft/Jahr	Verfügbarkeit

Andere fanden auch interessant ...

Artikel (Nationallizenzen)

Volltext

Digitale Medien

Biological Treatment of Saline Wastewater by Fed-Batch Operation (1997)

Kargi, Fikret ; Dincer, Ali R.

Chichester : Wiley-Blackwell

Journal of Chemical Technology AND Biotechnology 69 (1997), S. 167-172

zur Merkliste hinzufügen auf der Merkliste

Details

ISSN: 0268-2575

Schlagwort(e): saline wastewater ; biological wastewater treatment ; fed-batch operation ; Chemistry ; Biochemistry and Biotechnology

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung

Notizen: -The adverse effects of salt on biological treatment of saline wastewater inoculated by activated sludge culture were investigated. A synthetic wastewater composed of diluted molasses, urea, KH2PO4 and various concentrations of salt (1-5% w/v NaCl) was treated in an aerobic-biological reactor operating in fed-batch mode. An activated sludge culture obtained from a wastewater treatment plant was used as the seed. Variations of chemical oxygen demand (COD) removal rate and efficiency with salt concentration were determined. A rate expression including salt inhibition effect was proposed and kinetic constants were determined by using the experimental data. © 1997 SCI.

Zusätzliches Material: 3 Ill.

Materialart: Digitale Medien

Permalink

Bibliothek	Standort	Signatur	Band/Heft/Jahr	Verfügbarkeit

Andere fanden auch interessant ...

Artikel (Nationallizenzen)

Treffer 1 - 2 | 2 Treffer