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http://dx.doi.org/10.5762/KAIS.2013.14.2.970

Effect of Advanced Wastewater Treatment by Variations Operating Conditions of 4-stage Intermittently Aerated Activated Sludge process  

Choi, Yong-Bum (Dept. of Environmental Engineering Kangwon National University)
Lee, Jeong-Gyu (Dept. of Environmental Engineering Kangwon National University)
Han, Dong-Joon (Dept. of Fire·Environmental & Gangwon Provincial College)
Kwon, Jae-Hyouk (Dept. of Environmental Engineering Kangwon National University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.14, no.2, 2013 , pp. 970-976 More about this Journal
Abstract
An evaluation of the organic matter removal efficiency showed high removal efficiencies of 91.1~96.3% and 91.4~97.5% for TCODcr and TBOD5, respectively, for 9hr or longer of HRT. However, the removal efficiencies decreased to 86.9~90.5% and 88.0~90.9%, respectively for 6hr of HRT. $NH_3$-N showed a high removal efficiency of 95% or higher for 9hr or longer of HRT. The total nitrogen removal efficiency was 67.6~76.7% for 9~12hr of HRT, and it decreased to 50% for 6hr of HRT, which seems to be due to the insufficient carbon source required for denitrification. The T-P removal efficiency was 32% on average. To comply with the legal standards, a chemical phosphorus removal process is needed after the reactor.
Keywords
Advanced Wastewater Treatment; Intermittently Aerated Activated Sludge Process; Municipal Wastewater;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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