Characteristics of nitrogen and phosphorus removal in a sequencing batch reactor |
| |
| Authors: | Haiyan Guo Jiti Zhou Shoutong Zhang Zhen Guo |
| |
| Institution: | 1. School of Environmental and Chemical Engineering, Dalian Jiaotong University, Dalian 116028, China;2. Department of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China;1. School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China;2. GL Environment Inc, Hamilton, Canada;1. National Marine Science Centre, School of Environment, Science and Engineering, Southern Cross University, PO Box 4321, Coffs Harbour, NSW 2450, Australia;2. School of Environment, Science and Engineering, Southern Cross University, PO Box 157, Lismore, NSW 2480, Australia;3. Southern Cross GeoScience, Southern Cross University, PO Box 157, Lismore, NSW 2480, Australia;1. Department of Chemical Engineering, KTH Royal Institute of Technology, Stockholm, Sweden;2. Department of Chemistry, KTH Royal Institute of Technology, Stockholm, Sweden;3. Department of Engineering Sciences, Uppsala University, Uppsala, Sweden |
| |
| Abstract: | Laboratory scale experiments were conducted to study the characteristics of N and P removal under different influent organic carbon concentration in a sequencing batch reactor (SBR) with simple anaerobic/aerobic operating mode. Experimental results indicated that, under the operating condition of influent N concentration of 89 mg/L and P concentration of 15 mg/L, when the influent C/N ratio increased from 1.5 to 6.9 (influent C/P ratio from 9 to 41), total N and P removal efficiency improved from 50% and 46% to 78% and 96% respectively. Track studies of N, P and other operating parameters demonstrated that N removal of the SBR was realized through simultaneous nitrification and denitrification (SND) in the aeration phase and anoxic denitrificaiton in the filling phase, P removal was accomplished through conventional anaerobic P release and aerobic P taken-up process. Keeping dissolved oxygen (DO) concentration during the first two aeration hours as low as 0.1-0.6 mg/L is essential for the simultaneous occurrences of nitrification, denitrification and P-taken up. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
