Journal of Korean Society of Water and Wastewater (상하수도학회지)
- Volume 14 Issue 1
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- Pages.62-75
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- 2000
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- 1225-7672(pISSN)
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- 2287-822X(eISSN)
A Study on the Municipal Wastewater Treatment Using Biofilm Process
생물막공법을 이용한 도시하수처리에 관한 연구
- Published : 2000.03.15
Abstract
Most of biological treatment to remove contaminants in municipal wastewater have been conducted by activated sludge process. But, the process have several probIems such as enormous site needed for construction of treatment facilities, unstable treatment due to limited ability to control load fluctuation, frequent sludge bulking and appearance of lots of surplus sludge. In this study, the experiments were performed through submerging biofilm of PEPP media in existing aeration tank with raw water from municipal wastewater treatment plant and then submerging PVDC and PEPP media, different from shape and chemical peculiarity in anoxic reactor. Throughout the experience, nutrient removal efficiency according to HRT, nitrogen phosphorous removal efficiency, behavior of nitrogen and dewatering efficiency have been compared and analysed with those of activated sludge process. As the results, BOD removal efficiency according to BOD volumetric load and F/M ratio was not found any differency in two processes, but was decreased below 90% as going along the condition of high load in activated sludge process. Kinetic coefficient was
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