earticle

영어

A jet-loop reactor was used for the biological treatment of ethylene glycol(EG) which is a main component of polyester weight-loss wastewater, and is difficult to be removed by physicochemical treatments. Volumetric oxygen coefficient(kLa) of jet-loop reactor was significantly larfgeer that of air-lift reactor. When organic loading rates of synthetic polyester weight-loss wastewater were 2.64 kgODMn/m3.day and 3.07 kgCODcr/m3.day, the effluent concentrations were measured as 154 $mgCOD_{Mn}/L$ and 156,mgCODcr/L and removal efficiencies were found as 93%and 93.6%, respectively. The specific removal rate was proportionally increased from 0.25 to 1.60 kgCODMn-removed/kgMLVSS.day as specific loading rate was increased from 0.25 to 1.72 kgCODMn/kgMLVSS.day. Also, kinetics constants such as K1, k, ,Kd and Y were estimated as 89 mg/L, 0.05hr-1, 0.1 day-1 and 0.78 respectively. When the organic loading rates of real polyester weight-loss wastewater were 2.64 kgODMn/m3. and 5.24 kgCODcr/m3. day, the effluent concentrations were measured as 150 mgCODMn/L, and 306 mgCODcr/L, and removal efficiencies were found as 93.2% and 93%, respectively. This study demonstrated that EG in the wastewater could be efficiently removed biologically using a jet-loop reactor.

한국어

Polyester 감량폐수의 주성분 중 물리.화학적 처리가 어려운 EG를 생물학적으로 처리하기 위하여 jet-loop reactor를 사용하였다 Jet-loop reactor의 산소전달계수는 air-lift reactor와 비교하여 훨씬 컸다. 합성 polyester 감량폐수를 사용하여 부하율 2.64 mgCODMn/m3,.day, 3.07mgCODcr/m3.day로 처리한 경우 유출수의 농도는 154 mgCODMn/L, 156mgCODMn/L,이었으며, 이 때 각각 93, 93.9%의 제거율을 나타내었다. CODMn의 비부하 속도가 0.25에서 1.72kgCODMn/kgMLVSS.day로 증가 함에 따라 비기질제거 속도는 0.25에서 1.60.kgCODMn-removed/kgMLVSS,day로 선형적으로 증가하였다. 그리고, 동력학적 계수 Y는 0.78,Kd는 0.1day-1, 는 89mg/L는 k는 0.05hr-1이었다. 실제 polyester 감량폐수를 사용하여 부하율 2.64kgCODMn/m3.day,5.24kgCODcr/m3.day로 처리한 경우 유출수의 농도는 150kgCODMn/L, 3.6kgCODcr/L,이었으며, 이때 각각 93.2,93%의 제거울을 나타내었다