http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
김형수,등전현이 대한상하수도학회 1995 상하수도학회지 Vol.9 No.3
A Study on the fouling Control by periodical ozone-Scrubbing was conducted in a membrane filtration process for drinking water treatment. Hydrophilic hollow fiber polyethylene membrane with pore size of 0.1㎛ and its surface area of 0.42㎡ was used. Dead-End filtration method was selected to obtain high efficiency of energy. Laboratory prepared synthetic raw water with kaolin was used and the membranes were scrubbed by ozone once in an hour and once in two hours. When the duration of ozone scrubbing was increased from 10 seconds to 20seconds, the rate of membrane fouling was significantly decreased. Although the frequency of ozone-scrubbing was reduced from once in an hour to once in two hours, the effect of fouling control was unchanged, However, ozone-scrubbing was not effective after a membrane was fouled and washed with detergent for reuse. Among several possible working effects of ozone, bactericidal effect was confirmed to be the primary reason of fouling control.
논문 / 막 폐새 억제를 위한 맥동 원수 공급과 공기포요동세정 방법의 비교 연구
김형수(Hyung Soo Kim),등전현이(Kenji Fujita),안규홍(Kyu Hong Ahn),송경근(Kyung Guen Song) 한국수처리학회 1995 한국수처리학회지 Vol.3 No.1
A study has been conducted to investigate the efficiency of fouling control on the membrane surface. Generally used two methods, pulsating feed and air bubbling methods which enhance turbulence on the membrane surface, were selected. Hydrophilic hollow fiber polyethylene membrane with pore size of 0.1㎛ and its surface area of 0.42㎡ was used. Dead-end filtration method was selected to obtain high efficiency of energy. Three different quality of raw water were applied to the experiment to study the efficiency of reducing fouling. They were : tap water with kaoline, tap water with PAC and tap water added kaoline with PAC. The results showed that both methods were effective to remove turbidity formed by kaoline. Both methods were also effective for reducing organic contaminants in tap water with PAC. However, pulsating feed method was found to form foulings rapidly with PAC added kaoline water, while air bubbling method was not. In this study, the method using periodical air bubbling appears to be useful to reduce membrane fouling in tong term operation.