27 / 45
Notes:
Volume 3, Issue 2 (Suppl)
Trends in Green chem
ISSN: 2471-9889
Environmental & Green Chemistry 2017
July 24-26, 2017
Page 111
5
th
International Conference on
6
th
International Conference on
July 24-26, 2017 Rome, Italy
Environmental Chemistry and Engineering
Green Chemistry and Technology
&
Biological nutrient removal: The effect of organic load
Tea Širac
1
, Ana Mikulin
1
, Ana Špehar
2
and
Tibela Landeka Dragičević
1
1
University of Zagreb, Croatia
2
Agroproteinka, Croatia
B
iological Nutrient Removal (BNR) of nitrogen and phosphorus has been widely used in wastewater treatment practice to
control eutrophication in receivingwater bodies.Themost widely used nitrogen removal methods are biological nitrification
(aerobic transformation of NH
4
-N to NO
2
-N and NO
3
-N), and denitrification methods (anoxic reduction of NO
3
-N to N
2
).
Simultaneous nitrification-denitrification process (SND), in compare to conventional biological nitrogen removal process,
can offer several advantages including reducing carbon source and alkalinity consumption, low energy consumption, high
nutrients removal efficiencies, and simplifying the treatment system. P removal is achieved through Enhanced Biological
Phosphorus Removal (EBPR) under alternating anaerobic–aerobic conditions. Biological nutrient removal (N and P) in batch
anoxic experiments was investigated. The initial concentration of P and N were 10-18 mg PO43—P/L and 48±2 mg NH4+-
N/L. Sodium acetate was used as carbon source, at C/N 1 to C/N 7. Results indicated that the increase of C/N ratio improved
efficiency of N removal in a range from 14.3 % at C/N 1 to 89,7 % at C/N 7. And also, the highest P removal of 61% was
achieved at C/N 4. Nutrient removal was achieved by simultaneous nitrification and denitrification, and phosphorus removal.
Biography
Tea Širac graduated from Faculty of Food Technology and Biotechnology at the University of Zagreb in 2016. She is a Master of Molecular Biotechnology. From
2017. she has been working at Faculty of Food Technology and Biotechnology as a Scientific Assistant in a Laboratory for the Biological Wastewater Treatment.
Tea has been participant at IWA MEWE 2016 in the field of Microbial ecology in aerobic granular sludge processes, and at 16th Ružička days within the topic:
Environmental Protection.
tsirac@pbf.hrTea Širac et al., Trends in Green chem, 3:2
DOI: 10.21767/2471-9889-C1-003