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Characterization of water quality among direct and delayed wet -weather flowsin an urban combined sewer catchment of Thailand |
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| รหัสดีโอไอ | |
| Creator | 1. Anootnara Talkul Kuster 2. Anthony Charles Kuster |
| Title | Characterization of water quality among direct and delayed wet -weather flowsin an urban combined sewer catchment of Thailand |
| Publisher | Research and Development Office, Prince of Songkla University |
| Publication Year | 2560 |
| Journal Title | Songklanakarin Journal of Science and Technology (SJST) |
| Journal Vol. | 39 |
| Journal No. | 4 |
| Page no. | 497 |
| Keyword | combined sewer overflow,event mean concentration,stormwater,surface water quality,urban runoff |
| ISSN | 0125-3395 |
| Abstract | The purpose of this research was to compare five water quality parameters (BOD, TSS, total zinc, TKN, and fecalcoliform) in wet-weather flow of a combined sewer catchment against dry-weather flow, while making a distinction betweendirect and delayed inflow, which has often not been made. Correlations and event mean concentrations (EMCs) were alsocalculated. A total of 38 samples were collected from Khon Kaen's combined sewer system between March and August 2015.Concentrations in direct inflow of three parameters: total zinc ( x = 0.24 mg/L, IQR = 0.12-0.34), TSS (240 mg/L, 176-356),and BOD (59.7 mg/L, 42.4-77.8) were higher than delayed inflow ( x = 0.04 mg/L, 36 mg/L, and 23.7 mg/L, respectively).Concentrations of delayed inflow were similar to or lower than dry-weather flow. Pollutant concentrations for particulatebasedpollutants were much higher during the direct inflow phase of rain events compared to the delayed inflow phase.Dissolved-phased nutrients, however, were not different. |
