생물막 반응기내 다공성 중공사형막을 이용한 운전방식에 따른 흡입 압력 Suction Pressures with respect to the Operational Modes using the Multi-bore Capillary Membranes in the Membrane Bioreactor원문보기
본 연구에서는 다공성 중공사형 분리막(multi-bore capillary membrane module)을 생물막 반응기(MBR)에 침지시켜 운전시간에 따른 흡입 압력을 측정하였다. 공칭 세공크기가 0.2㎛, 외경이 6.4 또는 4.2 mm이고 육각 형태인 중공사형모듈을 MLSS 8,000 mg/L 활성 슬러지 수용액에 각각 침지시키고 투과 유속, 공기량에 따른 변화를 확인하였다. 여과운전/정지이완(FR) 및 정지이완 시 역세척(FR/BW) 및 사인파형 투과유속 연속운전(SFCO) 방식으로 조작하였다. SFCO의 흡입 압력은 30 L/m2·hr에서 낮았으며, 50 L/m2·hr에서는 FR의 흡입 압력이 높게 나타났다. 또한 외경이 작은 모듈의 흡입 압력 상승이 비교적 낮았으며, 외경이 큰 모듈의 흡입 압력은 높게 상승하였지만 역세척으로 40% 이상 감소시킬 수 있었다.
본 연구에서는 다공성 중공사형 분리막(multi-bore capillary membrane module)을 생물막 반응기(MBR)에 침지시켜 운전시간에 따른 흡입 압력을 측정하였다. 공칭 세공크기가 0.2㎛, 외경이 6.4 또는 4.2 mm이고 육각 형태인 중공사형모듈을 MLSS 8,000 mg/L 활성 슬러지 수용액에 각각 침지시키고 투과 유속, 공기량에 따른 변화를 확인하였다. 여과운전/정지이완(FR) 및 정지이완 시 역세척(FR/BW) 및 사인파형 투과유속 연속운전(SFCO) 방식으로 조작하였다. SFCO의 흡입 압력은 30 L/m2·hr에서 낮았으며, 50 L/m2·hr에서는 FR의 흡입 압력이 높게 나타났다. 또한 외경이 작은 모듈의 흡입 압력 상승이 비교적 낮았으며, 외경이 큰 모듈의 흡입 압력은 높게 상승하였지만 역세척으로 40% 이상 감소시킬 수 있었다.
In this study the suction pressure was measured with respect to operational time by submersing the multi-bore capillary membrane module in membrane bioreactor(MBR). The hexagonal shape capillary module which has the nominal pore size of 0.2 ㎛, outer diameter of 6.4 or 4.2 mm was immersed in M...
In this study the suction pressure was measured with respect to operational time by submersing the multi-bore capillary membrane module in membrane bioreactor(MBR). The hexagonal shape capillary module which has the nominal pore size of 0.2 ㎛, outer diameter of 6.4 or 4.2 mm was immersed in MLSS 8,000 mg/L active sludge aqueous solution, and confirmed changes with respect to permeation flux and air flow rate. It was operated by the filtration/relaxation(FR), FR with backwashing(FR/BW), and sinusoidal flux continuous operation(SFCO) modes. The suction pressure for the SFCO and FR modes was lower at 30 and 50 L/m2·hr, respectively. In addition, the suction pressure of the module with a small outer diameter was relatively low. The suction pressure of a large outer diameter was greatly increased, but it could be reduced by more than 40% by backwashing.
In this study the suction pressure was measured with respect to operational time by submersing the multi-bore capillary membrane module in membrane bioreactor(MBR). The hexagonal shape capillary module which has the nominal pore size of 0.2 ㎛, outer diameter of 6.4 or 4.2 mm was immersed in MLSS 8,000 mg/L active sludge aqueous solution, and confirmed changes with respect to permeation flux and air flow rate. It was operated by the filtration/relaxation(FR), FR with backwashing(FR/BW), and sinusoidal flux continuous operation(SFCO) modes. The suction pressure for the SFCO and FR modes was lower at 30 and 50 L/m2·hr, respectively. In addition, the suction pressure of the module with a small outer diameter was relatively low. The suction pressure of a large outer diameter was greatly increased, but it could be reduced by more than 40% by backwashing.
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