파일럿 규모의 선회식 가압부상공정에서 응집제 종류별 유해 조류 제거효율 비교

• Published in: 한국수처리학회지, 26(4) pp. 69 - 80
• Main Authors: 오홍석, 강선홍, 양시천, 남숙현, 김은주, 황태문
• Format: Journal Article
• Language: Korean
• Published: 한국수처리학회 31.08.2018
• Subjects: 토목공학
• ISSN: 1225-7192; 2289-0076
• DOI: 10.17640/KSWST.2018.26.4.69

Dissolved air flotation (DAF), one of the most representative physico-chemical processing technologies used to remove suspended particles or algae in aquatic environment. Cyclonic Dissolved Air Flotation (DAF), a dissolved air flotation method displaying improved performance, has a structure capable of forming twirling flows that produce microbubbles that adhere to suspended matter and float to the surface of the water passing through the float separation tank. The purpose of this study is to evaluate the cyclonic-DAF process for the treatment of harmful algae in aquatic environment. The effect of coagulants type, such as PAC, PolyDADMAC and R-119, were investigated. In this experiments, algaecide named as R-119 showed the effective coagulant to remove chlorophyll-a and algae. For the effect of the coagulant dose, the removal efficiency of algae was increased as coagulant concentration increased. The optimal concentration coagulant has been similarly observed at 60 mg/L for PAC and R-119. However, PAC showed that it did not meet the number of cyanobacteria cells below the algae level suggested by the algae warning guideline. In the case of PolyDADMAC, the removal of cyanobacteria cells showed excellent results, but turbidity and suspended solids were significantly lower than that of PAC and R-119. KCI Citation Count: 2