건설현장 탁수제어를 위한 원통형 여과장치의 처리효율 분석

• Published in: 한국물환경학회지 Vol. 30; no. 5; pp. 532 - 538
• Main Authors: 최종수, 공영산, 이정민, 방기웅, Choi, Jongsoo, Kong, Young-San, Lee, Jung-Min, Bang, Ki-Woong
• Format: Journal Article
• Language: Korean
• Published: 한국물환경학회 30.09.2014
• Subjects: 환경공학; Coagulant; Back-wash; Cylinder-shaped filter; Construction site; Runoff
• ISSN: 2289-0971; 2289-098X
• DOI: 10.15681/KSWE.2014.30.5.532

A cylinder-shaped filter was developed to manage the runoff from construction sites. Compressed air was used for back-washing and pore sizes of filter were $23{\mu}m$ and $46{\mu}m$. The turbid water was prepared using sediments in construction sites. The grain size analysis showed that grains smaller than $38{\mu}m$ and larger than $335{\mu}m$ in size constituted 34.4 % and 37.6 %, respectively. Removal efficiency of the filter on turbidity, SS, COD, TN and TP showed 25~37%, 20~40%, 50~55%, 23~27% and 14~20%, respectively, whereas their removal efficiecy by using coagulant PAC showed 77~84%, 70~83%, 53~60%, 27~36%, and 59~75%, respectively. The filtration time was determined to be around 10 to 20 minutes. Back-washing for 10 seconds by pressurized air resulted in a satisfactory regeneration efficiency. According to the aforementioned test results, the cylinder-shaped filter is effective in reducing turbidity and would be suitable for practical application in construction sites and farms.