| Title |
Analysis of First Flush of Recreation Park and Removal Rate According to Rainfall-Runoff Storage Depth |
| Authors |
정재운 ( Jae Woon Jung ) ; 박하나 ( Ha Na Park ) ; 최동호 ( Dong Ho Choi ) ; 백상수 ( Sang Soo Baek ) ; 윤광식 ( Kwang Sik Yoon ) ; 백원진 ( Won Jin Back ) ; 범진아 ( Jin A Beam ) ; 임병진 ( Byung Jin Lim ) |
| Keywords |
First flush; MFFn; Nonpoint source; Storage depth; Water quality |
| Abstract |
Nonpoint source pollution characteristics of recreation park was investigated. Runoff ratio of recreation park ranged 23-57%, which was lower than other urban area since impervious area was less than 37%. The average BOD, COD, TOC, SS, T-N, T-P, were 14.09, 32.86, 12.19, 121.51, 7.78 and 0.72 mg/L, respectively. First flush of recreation park was analyzed by normalized cumulative load - volume curve and mass first flush ratio(MFFn), MFF10 for BOD, COD, SS, T-P, T-N, TOC were 2.90, 1.59, 2.15, 2.74, 2.60, and 1.59, respectively. Observed data showed that 62% of pollutant could be removed by storaging 5 mm rainfall-runoff and even 3 mm depth could store up to 50% of pollutant in runoff. |