P RELEASE AND UPTAKE ACCORDING TO INFLUENT ORGANIC LOADING IN BNR PROCESS

Kim, Kwang-Soo; Ann, Chang-Hoon; Park, Jae-Kwang

doi:2005.10.6.265

Environmental Engineering Research 2005;10(6): 265-268. DOI: https://doi.org/10.4491/eer.2005.10.6.265

P RELEASE AND UPTAKE ACCORDING TO INFLUENT ORGANIC LOADING IN BNR PROCESS

Kwang-Soo Kim¹^†, Chang-Hoon Ann², and Jae-Kwang Park²

¹Construction Environment Research Dept., Korea Institute of Construction Technology
²Civil and Environmental Eng. Dept., University of Wisconsin-Madison, USA

Corresponding Author: Kwang-Soo Kim ,Tel: +82-31-910-0299, Fax: +82-31-910-0291, Email: kskim@kict.re.kr

Received: August 6, 2005; Accepted: November 6, 2005.

ABSTRACT

A batch-type study was conducted to investigate the phosphorus release and uptake under anaerobic and aerobic conditions according to organic loading changes. As organic loading increased, anaerobic P release increased but aerobic P uptake decreased. Where organic carbon contents remain high in aerobic conditions, PHB consumption within the microbial cells diminished, therefore it was found that in order to enhance P uptake rate, it should reach the endogenous growth stage where the entire organic loading was consumed.

Keywords: P release and uptake | Organic loading | Endogenous growth | PHB