Search / Korean Journal of Chemical Engineering
HWAHAK KONGHAK,
Vol.23, No.6, 369-377, 1985
생물학적 유동층을 이용한 주정폐수 처리에 관한 연구
A Study on Brewery Wastewater Treatment using Biological Fluidized Bed
본 논문에서는 고농도 주정폐수처리에 생물학적 유동층 반응기 를 응용하여 유동층 메디아로서는 0.3∼0.4 mm 모래를 사용했으며 반응온도는 28 ℃에서 F/Mql 및 시료수의 희석비를 각각 0.2∼0.5, 2∼10배로 변화시켜 연속식반응기에 의해서 시행되었다. 여기서 얻어진 결과로 모래는 좋은 유동특성을 갖는 메디아였으며 저희석 주정폐수처리에 대한 생물학적 유동층의 적용은 다른 생물학적 처리에 비해서 좋은 효과를 얻을 수 있었다.
본 연구에서 택한 공정은 산소접촉공정 과 폭기공정을 비교연구한 바 최적희석비는 7배, 최적체류시간은 5시간, F/M비는 0.3, 그리고 유기물제거효율은 93 %로 나타났다. 또, 산소접촉공정과 폭기공정에서 유기물 제거속도는 각각 0.93 hr-1, 0.68 hr-1, 유동층 미생물량은 각각 11,000 mg/l, 10,500 mg/l, 유기물 부하는 각각 4,088 mg/l,·day, 3,830 mg/day었다.
The biological fluidized bed reactor was used to treat concentrated brewery waste-water by employing 0.3-0.4 mm sand for the support media. The reactor was run continuously at 28 ℃ by varying F/M ratio from 0.2 to 0.5 and dilution ratio from 2 to 10. The results showed that the sand was a good support, which had appropriate fluidization characteristics. This process was found more effective than other biological processes. Pure oxygen as well as aeration system were employed, and the results showed that the optimum dilution ratio was about 7 times, the optimum HRT was about 5 hrs, F/M ratio was 0.3, and organic removal efficiency was 93 %.
The organic removal rate, BVS, and TOC loading of pure oxygen system and aeration system were 0.93 hr, 0.68 hr, 11,000 mg/L, 10,500 mg/L and 4,088 mg/L/day, 3,830 mg/L/day, respectively.