Phosphate uptake and release rates with different carbon sources in biological nutrient removal using a SBR |
| |
Authors: | Kargi Fikret Uygur Ahmet Ba?kaya Hüseyin Sava? |
| |
Institution: | Department of Environmental Engineering, Dokuz Eylul University, Buca, Izmir, Turkey. fikret.kargi@deu.edu.tr |
| |
Abstract: | A three-step sequencing batch reactor (SBR) was used for nutrient removal from synthetic wastewater with different glucose-organic acid mixtures (1/1). Acetic, butyric, propionic and citric acids were used as organic acids along with glucose. The operation consisted of anaerobic, anoxic and oxic (An/Ax/Ox) phases with durations of 2/1/4.5h. Sludge age was kept constant for 10 days. Phosphate release and uptake rates were determined for different glucose-organic acid mixtures in the feed wastewater. Maximum phosphate uptake (8.1mgPl(-1)h(-1)) and release rates (2.23mgPl(-1)h(-1)) were obtained with the glucose-citric acid mixture. The highest (96%) percent phosphate removal at the end of the nutrient removal cycle (7.5h) was also obtained with the glucose-citric acid mixture while the glucose-acetic acid mixture resulted in comparable percent phosphate removal (95%). |
| |
Keywords: | |
本文献已被 ScienceDirect PubMed 等数据库收录! |
|