BAF를 이용한 2차 처리수의 재이용 가능성 및 강우시 하수처리장 월류수의 처리 : Reuse Possibility of By-pass Flow and Secondary Effluent using BAF
Reuse Possibility of By-pass Flow and Secondary Effluent using BAF
- 주제(키워드) BAF , First flush , Nitrification , Reuse , Tertiary treatment , Reuse
- 발행기관 한국물환경학회
- 발행년도 2005
- 총서유형 Journal
- UCI G704-000646.2005.21.2.002
- KCI ID ART001131983
초록/요약
The laboratory and pilot scale BAFs (biological aerated filters) were operated with 0.3 hr to 1.1 hr EBCT(empty bed contact time) at a maximum filtration rate of 472 m3/m2/day as a treatment method for reuse of secondary effluent and by-pass flow in this study. The effluent BOD and SS were generally 3.5 to 5 mg/L and 2 to 3 mg/L, respectively with 2ndary effluent, but the SS concentrations increased to 4 to 8 mg/L with the increased flow rates of by-pass flow. Potential nitrification rates were very high, but the nitrogen removal efficiencies were low due to the limited carbon sources. Bypass of a part of primary effluent seemed to be desirable to increase the nitrogen removal. Disinfection must be furnished for the reuse of BAF effluent.
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