슬러리상 돈사폐수의 혐기성 처리수의 아질산성 질소 축적 : Nitrite Accumulation of Anaerobic Treatment Effluent of Slurry-type Piggery Waste
Nitrite Accumulation of Anaerobic Treatment Effluent of Slurry-type Piggery Waste
- 주제(키워드) Control parameter , Nitrite accumulation , Piggery waste , Control parameter , Nitrite accumulation , Piggery waste
- 발행기관 한국물환경학회
- 발행년도 2006
- 총서유형 Journal
- UCI G704-000646.2006.22.4.010
- KCI ID ART001132426
초록/요약
The effluent from anaerobic digestion process of slurry-type piggery waste has a characteristic of very low C/N ratio. Because of high nitrogen content, it is necessary to evaluate nitrogen removal alternative rather than conventional nitrification- denitrification scheme. In this study, two parallel treatment schemes of SBR-like partial nitritation reactor coupled with anaerobic ammonium oxidation (ANAMMOX) reactor, and a nitritation reactor followed by nitrite denitrification process were evaluated with a slurry-type piggery waste. The feed to reactors adjusted with various NH4-N and organics concentration. The nitrite accumulation was successfully accomplished at the loading rate of about 1.0 kgNH4-N/m3-day. The NO2-N/NH4-N ratio 1~2.6 in nitritated effluent that operated at HRT of 1 day indicated that SBR-like partial nitritation was applicable to ANAMMOX operation. Meanwhile, the nitrite accumulation of 87% was achieved at SBR operated with HRT of 3 days and 0.4 mgO2/L for denitritation. Experimental results further suggested that HRT (SRT) and free ammonia(FA) rather than DO are an effective control parameter for nitrite accumulation in piggery waste.
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