DAF(Dissolved Air Flotation)를 이용한 제지폐수의 COD, SS 및 탁도 제거

• 영문명: COD, SS and Turbidity Removal of Paper Wastewater Using DAF(Dissolved Air Flotation)
• 발행기관: 한국환경보건학회
• 저자명: 김동석(Dong Seog Kim) 박영식(Young Seek Park)
• 간행물 정보: 『한국환경보건학회지』제31권 제4호, 246~253쪽, 전체 8쪽
• 주제분류: 공학 > 환경공학
• 파일형태: PDF
• 발행일자: 2005.08.30

영문 초록

The supernatant treatment of recovery process of raw materials of paper plant was studied using DAF (Dissolved Air Flotation) system. We investigated the removal efficiency (COD, SS and turbidity) of the DAF process. The effects of parameters such as A/S ratio, pressure, flotation conditions, coagulant concentration, mixing conditions, size and ratio of packing and nozzle type were examined. The results showed that the optimum A/S ratio and pressure were 0.058 and 4.5-5 atm, respectively. Injection times of pressurized water around 30 s and flotation times around 10 min appeared to be optimal for the DAF operation. Anion polymer addition improved the removal of COD, SS and turbidity. The smaller size and the more packing ratio were enhanced the removal efficiencies. The order of performance of nozzle was full cone > flat > assemble type.

목차

Ⅰ. 서론

Ⅱ. 연구내용

Ⅲ. 결과 및 고찰

Ⅳ. 결론

키워드

DAF paper wastewater COD SS turbidity coagulation