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| Identifier |
uch.chemistry.msc//2001savvidis |
| Title |
Βιολογική Απομάκρυνση Αζώτου από Υγρό Απόβλητο αστικού τύπου και υψηλής ισχύος σε Αντιδραστήρα Διαλείποντος Έργου με Περιοδική Λειτουργία (SBR) |
| Creator |
Savvidis, Anastasios
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| Abstract |
In the recent years nitrogen removal from water (either potable or domestic and industrial wastewater) has been very important for the protection of the environment and public health. Biological nitrogen removal is achieved by the combination of two processes: nitrification and denitrification. Nitrification consists of the sequential oxidation of ammonium-nitrogen to nitrite and then to nitrate-nitrogen and is catalyzed by autotrophic microorganisms under aerobic conditions. Denitrification consists of the reduction of produced nitrate-nitrogen to nitrogen gas by heterotrophic microorganisms under anoxic conditions. In the present study a lab-scale Sequencing Batch Reactor was used for the study of nitrogen removal from a synthetic wastewater that is emulating a typical medium and high strength domestic wastewater. Three kinds of synthetic wastewaters were used for the nitrogen-removal with the following characteristics in concentration of chemical oxygen demand (COD) and ammonium-nitrogen (NH4+-N). The first wastewater had COD = 500 mg/L and NH4+-N = 60 mg/L. The second wastewater had COD = 1000 mg/L and NH4+-N = 60 mg/L and the last one had COD = 1000 mg/L and NH4+-N = 120 mg/L. The total duration of the cycle of the SBR was 12 hours and the phases of that cycle were: i) Filling phase (1/2h), ii) Reaction phase (10h). The ratio of aerobic/anoxic phase was 1:1, iii) Settle phase (1h), iv) Draw phase (20 min) and v) Idle phase (10 min).
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| Language |
Greek |
| Issue date |
2001-07-01 |
| Collection
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School/Department--School of Sciences and Engineering--Department of Chemistry--Post-graduate theses
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Type of Work--Post-graduate theses
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| Notes |
Διατμηματικό, συνεργαζόμενα Τμήματα Χημείας του Πανεπιστημίου Κρήτης και Χημικών Μηχανικών του Πανεπιστήμιο Πατρών. |
| Views |
273 |
Βιολογική Απομάκρυνση Αζώτου από Υγρό Απόβλητο αστικού τύπου και υψηλής ισχύος σε Αντιδραστήρα Διαλείποντος Έργου με Περιοδική Λειτουργία (SBR)
