| Title |
Changes in Characteristics of Sewer Flow & Its Water Quality from the Sewer Rehabilitation Area |
| Authors |
박준대 ( Jun Dae Park ) ; 오승영 ( Seung Young Oh ) ; 최윤호 ( Yun Ho Choi ) ; 김용석 ( Yong Seok Kim ) |
| DOI |
https://doi.org/10.15681/KSWE.2015.31.2.196 |
| Keywords |
Exfiltration; Infiltration/Inflow; Sewer flow; Sewer rehabilitation |
| Abstract |
This study analyzed the characteristics of sewer flow and its water quality, and investigated changes in the characteristics in three areas where the sewer rehabilitation projects have been carried out. In S1 area, the patterns of the flow became regular and the range of the fluctuation decreased after the sewer rehabilitation. The flow and its BOD concentration increased. The infiltration/inflow and exfiltration showed clear distinction before and after the sewer rehabilitation in this area. In S2 area, the patterns and the range of the fluctuation of the flow made no differences before and after the sewer rehabilitation. The flow decreased slightly and its BOD concentration increased considerably after the sewer rehabilitation. Big decrement in stormwater inflow but small in exfiltration appeared in this area. In S3 area, the patterns and the range of the fluctuation of the flow made no differences before and after the sewer rehabilitation. The flow decreased slightly and its BOD concentration increased in a small rate in this area. |