오존산화에 의한 정수장의 Microcystin제거 특성에 관한 연구

• 영문명: A Study on the Removal Characteristics of Microcystin in the Water Treatement Plant by Ozonation
• 발행기관: 한국환경보건학회
• 저자명: 김민규 권재현 조영하 이진애 권오섭
• 간행물 정보: 『1. 한국환경보건학회지』제29권 제1호, 74~83쪽, 전체 10쪽
• 주제분류: 공학 > 환경공학
• 파일형태: PDF
• 발행일자: 2003.03.30

영문 초록

Microcystin, stable compounds with circular heptapeptides, is presented inside cyanobacterial cell. So far, over 30 types have been known to exist and microcystin-LR, RR among them are the most potent toxin compound. By this reason, a strong oxidant, ozone was used in this study to remove the microcystins produced by cyanobacteria. Removal efficiency of microcystin at M water treatment plant was also evaluated. Microcystin concentration was determined by protein phosphatase inhibition assay. The results showed that dissolved microcystin in raw water detected in the range of 0.011-0.028 ㎍ Microcystin-RR equivalent/l. Above 98% of microcystin was removed through overall treatment system. Therefore, the water treatability of M treatment plant seemed to be excellent. Removal efficiency of microcystin according to unit process varied as characteristics of raw water such as DOC, UV/sub 254/ and turbidity. Removal efficiency of microcystin by ozonation was investigated in laboratory according to contact time and ozone dose. Dissolved microcystin was increased by twice fold according to ozone contact time, but increased by fifth fold according to ozone dose. So, changing of ozone dose more affected microcystin release than changing of ozone contact time. Behavior of microcystin by ozonation was similar to that of DOC, and residual ozone concentration gave influence to removal ratio of microcystin. In conclusion, single ozone treatment wasn t effective on microcystin removal in case of water containing a lot of cells. Therefore, it s more effective to use ozonation process after the removal of cyanobacterial cells in advance.

목차

ABSTRACT

Ⅰ.서론

Ⅱ.연구방법

Ⅲ.결과 및 고찰

Ⅳ.결론

참고문헌

키워드

Cyanobacteria Eutrophication Ozonation Microcystin DOC Protein phosphatase inhibition assay