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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.

[email protected]

Tea Širac et al., Trends in Green chem, 3:2

DOI: 10.21767/2471-9889-C1-003