| Title |
Biological Nitrogen Removal using the Sequencing Batch Reactor Process |
| Authors |
양형재(Hyung Jae Yang), 신응배(Eung Bai Shin), 정윤철(Yun Chul Chung), 이재운(Jae Woon Lee) |
| Abstract |
A bench-scale reactor using SBR process was experimented with a synthetic wastewater. The main purpose of this investigation was to evaluate applicability in the field and process removal efficiencies in terms of BOD and T-N, and its corresponding kinetic parameters. Removal rate of nitrogen was 71% in terms of total nitrogen. Effluent concentrations were 9.8㎎/ℓ BOD and 11.2㎎/ℓ T-N, and was maintained consistently stable concentration by controlling decant volume and operating cycles. During the anaerobic phase, corresponding to the end of denitrification, the pH profile shows a maximum due to the alkalinity production during the reactions. And during the aerobic phase, the pH shows a rapid increase due to the CO₂ stripping and pH starts to increase again when ammonia nitrogen reaches the minimum level. Microscopic examination revealed that microcytes observed predominantly in sludge were Vorticella, Epistilis, Opercularia, Aspidisca, Chilodonella that are protozoa and Philodina, Rotaria, Notommata, Nematoda that are rotatoria |