| Title |
On - site Sewage Treatment by the Sequencing Batch Reactor Activated Sludge Process |
| Authors |
서정범(Jeong Beom Seo),임연택(Yeon Taek Rim),권오상(Oh Sang Kwon),한기봉(Gee Bong Han),유재근(Jae Keun Ryu) |
| Abstract |
This study was focused on investigation of operational efficiencies in terms of BOD, SS, TN and TP for treatment facility built on-site apartment building. The sequencing batch reactor (SBR) activated sludge process of 40㎥/day capacity was applied for sewage treatment system. The results of the research showed that the sewage flow rate and BOD concentration was particulary high at about 8:00 p.m. and 10:00 a.m., respectively. The average sewage concentration of BOD. SS, TN and TP were 145.4㎎/L, 101.l㎎/L, 33.3㎎/L and 2.8㎎/L, respectively. In operational steady state, BOD removal was observed to be 94.9% on average while SS removal to be 88.2% on average. Denitrification/nitrification were accomplished during SBR processes and average removal rate of nitrogen was 71.8% in terms of total nitrogen. Nitrogen removal was not affected by the winter season. Removal efficiency of phosphorus was 76.9% in terms of total phosphorus. The average effluent concentration of BOD, SS, TN and TP were 8.3㎎/L, 11.4㎎/L, 9.0㎎/L and 0.6㎎/L, respectively. Observed microbial yield coefficient was 0.29gMLSS/gBOD. This experiment may prove that the SBR process can be employed to treat organic matter as well as nutrients in sewage that are generated from such sources as apartment building and community area. |