title: An investigation into the relationship between water quality volume (design storage volume) and stormwater wetland performance.
abstract: An investigation on free water surface wetland, which has an area of 0.23 ha and is employed to control the non-point source pollution from a watershed of 7.4 ha, was carried out to examine how the WQvr (the ratio of stormwater inflow volume to water quality volume (WQv)) affects the wetland treatment performance. As stormwater went through the wetland, TSS (total suspended solids), TCOD (total chemical oxygen demand), TN (total nitrogen) and TP (total phosphorus) were reduced by 85%, 57%, 6% and 68%, on average, respectively. Increase in the WQvr resulted in a decrease in the reduction efficiencies of TSS, TCOD and TP, but a slight increase in TN removal. WQv was identified as a useful parameter for the design of stormwater wetlands, as this volumetric design approach overcomes the variation in flow rate and pollutant concentrations with respect to time and rainfall conditions. However, the design goal of 80% TSS reduction was not accomplished as inflow water volume equal to designed WQv. On the other hand, it was found that TCOD and TP reduction could also be considered as wetland design goals together with TSS. However, TN reduction did not show any significant relationship with the WQv.
authors.affiliation: Department of Environmental Engineering, Hanseo University, Seosan 356-706, Korea E-mail: ykim@hanseo.ac.kr.
authors.forename: Siping
authors.initials: S
authors.lastname: Niu
authors.affiliation: Department of Environmental Engineering, Hanseo University, Seosan 356-706, Korea E-mail: ykim@hanseo.ac.kr.
authors.forename: Kisoo
authors.initials: K
authors.lastname: Park
authors.affiliation: Department of Environmental Engineering, Hanseo University, Seosan 356-706, Korea E-mail: ykim@hanseo.ac.kr.
authors.forename: Jing
authors.initials: J
authors.lastname: Cheng
authors.affiliation: Department of Environmental Engineering, Hanseo University, Seosan 356-706, Korea E-mail: ykim@hanseo.ac.kr.
authors.forename: Youngchul
authors.initials: Y
authors.lastname: Kim
mesh_terms: D057919:Biological Oxygen Demand Analysis; D009584:Nitrogen / Q000032:analysis; D010758:Phosphorus / Q000032:analysis; D011891:Rain; D012498:Sanitary Engineering; D014874:Water Pollutants, Chemical / Q000737:chemistry*; D018508:Water Purification / Q000379:methods; D060753:Water Quality; D053833:Wetlands
chemical_list: D014874:Water Pollutants, Chemical; D010758:Phosphorus; D009584:Nitrogen