EJPAU 2012. Kuśmierczak J. , Anielak P. , Rajski Ł. LONG-TERM CULTIVATION OF AN AEROBIC GRANULAR ACTIVATED SLUDGE

Electronic Journal of Polish Agricultural Universities (EJPAU) founded by all Polish Agriculture Universities presents original papers and review articles relevant to all aspects of agricultural sciences. It is target for persons working both in science and industry,regulatory agencies or teaching in agricultural sector. Covered by IFIS Publishing (Food Science and Technology Abstracts), ELSEVIER Science - Food Science and Technology Program, CAS USA (Chemical Abstracts), CABI Publishing UK and ALPSP (Association of Learned and Professional Society Publisher - full membership). Presented in the Master List of Thomson ISI.

2012
Volume 15
Issue 1

Topic:

Environmental Development

ELECTRONIC
JOURNAL OF
POLISH
AGRICULTURAL
UNIVERSITIES

Kuśmierczak J. , Anielak P. , Rajski Ł. 2012. LONG-TERM CULTIVATION OF AN AEROBIC GRANULAR ACTIVATED SLUDGE, EJPAU 15(1), #06.
Available Online: http://www.ejpau.media.pl/volume15/issue1/abs-06.html

LONG-TERM CULTIVATION OF AN AEROBIC GRANULAR ACTIVATED SLUDGE

Jakub Kuśmierczak, Piotr Anielak, Łukasz Rajski
Institute of General and Ecological Chemistry, Technical University of Łódź

ABSTRACT

Aerobic granules were cultivated in a sequencing batch reactor (SBR) fed with sucrose as a sole carbon source at superficial upflow air velocity of 1.9 cm/s and under an organic loading rate (OLR) of 2 g COD/L.d. This study shows that cultivated granules during 1 year were stable and had capability in simultaneous removal of carbon, nitrogen and phosphorus from wastewater. At a 6 h SBR cycle removal efficiency of chemical oxygen demand (COD), N-NH4⁺, P-PO4^3- were 93%, 66% and 83%, respectively. The value of sludge volume index (SVI) was between 90-110 mL/g and biomass concentration reached up to 8.0 g/L. With the granulation, the specific gravity and surface hydrophobicity of sludge increased and aerobic granules mean diameter was 4.9 mm.

Key words: sequencing batch reactor (SBR), microbial granules, nitrification, denitrification, microbial activity.

Jakub Kuśmierczak
Institute of General and Ecological Chemistry, Technical University of Łódź
Żeromskiego 116, 90-924 Łódź, Poland
email: kubuss7@onet.eu

Piotr Anielak
Institute of General and Ecological Chemistry, Technical University of Łódź
Żeromskiego 116, 90-924 Łódź, Poland

Łukasz Rajski
Institute of General and Ecological Chemistry, Technical University of Łódź
Żeromskiego 116, 90-924 Łódź, Poland

Responses to this article, comments are invited and should be submitted within three months of the publication of the article. If accepted for publication, they will be published in the chapter headed 'Discussions' and hyperlinked to the article.