earticle

영어

In this study, KNR process of the actual treatment plant scale was conducted on organic matter and nitrogen removal from effluent of anaerobic digester treating food waste leachate. The average influent concentration of treatment plant were temperature 21.7oC, pH 7.6, DO 0.1 mg/L, alkalinity 4,835 mg/L, CODCr 12,491 mg/L, CODMn 3,347 mg/L, T-N 603.7 mg/ L, NH4 +-N 581.2 mg/L, T-P 54.7 mg/L, respectively, and the average effluent concentration were temperature 24.9oC, pH 8.7, DO 5.2 mg/L, alkalinity 2,587 mg/L, CODCr 134.5 mg/L, CODMn 47.1 mg/L, T-N 11.8 mg/L, NH4 +-N 1.2 mg/L, T-P 13.5 mg/ L, respectively. CODCr and CODMn average removal efficiency were 98.9% and 98.6%, respectively, and T-N and NH4 +-N average removal efficiency of 98.0% and 99.8%, respectively. Very stable effluent quality was achieved during the operating period. Volumetric loading rates of organic and ammonia nitrogen in the UMBR were 9.5 kgCODCr/m3·day and 0.44 kgNH4 +- N/ m3·day, respectively, and microbial loading rates were 0.68 kgkgCODCr/kgMLVSS·day and 0.03 kgNH4 +-N/kgMLVSS· day. 98% of CODCr and 95.7% of NH4 +-N were removed from the UMBR. Prevention of shock load caused by influent fluctuation and microorganisms inhibition caused by high NH4 +-N in the UMBR was adjusted by the high recirculation rate.

한국어

본 논문에서 음식물폐수의 혐기성 소화액 처리를 위해 실제 처리장 규모로 KNR 공법을 현장 적용하여 유기물 및 질소제거에 대한 연구를 수행하였다. 처리장 유입수의 평균 수질은 수온 21.7oC, pH 7.6, DO 0.1mg/L, 알 칼리도 4,835mg/L, CODCr 12,491 mg/L, CODMn 3,347mg/L, T-N 603.7mg/L, NH4 +-N 581.2mg/L, T-P 54.7mg/L이었으며, 유출수의 평균 수질은 수온 24.9oC, pH 8.7, DO 5.2 mg/L, 알칼리도 2,587mg/L, CODCr 134.5 mg/L, CODMn 47.1mg/L, T-N 11.8 mg/L, NH4 +-N 1.2 mg/L, T-P 13.5mg/L 이었다. CODCr와 CODMn 평균 제거효율은 각각 98.9%와 98.6%로 안정적으로 뛰어난 처리효 율을 보였으며, T-N 과 NH4 +-N 평균 제거효율은 각각 98.0%와 99.8%로 나타났다. UMBR 반응조에서 유기물 및 질소의 용량부하 는 각각 9.5 kgCODCr/m3·day, 0.44 kgNH4 +-N /m3·day이었고, 미생물부하는 각각 0.68 kgCODCr/kgMLVSS·day, 0.03 kgNH4 +-N/kgMLVSS·day를 유지하였으며, 대부분의 유기물(CODCr의 98%)과 질소(NH4 +-N의 95.7%)가 UMBR 반응조에서 제거되었다. 이는 UMBR 반응조가 높은 슬러지 순환비율에도 잘 견디어 NH4 +-N의 미생물에 대한 독성 및 유입수에 대한 충격부하에 대응력이 뛰어난 것을 시사하였다.