Water Quality Improvement and Pollutant Removal by Two Regional Detention Facilities with Constructed Wetlands in South Texas

Sustainability

卷:12

Ahmed Mahmoud¹  Andrew Ernest¹  MuhammedA. Chowdhury²  KimD. Jones²  Adeniyi Adetayo²  Taufiqul Alam²  Javier Guerrero³ 

[1] Department of Civil Engineering, University of Texas Rio Grande Valley, Edinburg, TX 78539, USA;

[2] Department of Environmental Engineering, Texas A&M University-Kingsville, Kingsville, TX 78363, USA;

[3] Research, Applied, Technology, Education and Service, Inc., Rio Grande Valley, Edinburg, TX 78540, USA;

关键词: stormwater management;    urban runoff;    load reduction;    green infrastructure;    wetland;    indicator bacteria;   

DOI  :  10.3390/su12072844

来源: DOAJ

【 摘 要 】

Stormwater runoff introduces several pollutants to the receiving water bodies that may cause degradation of the water quality. Stormwater management systems such as detention facilities and wetland can improve the water quality by removing various pollutants associated with the runoff. The objective of this research project is to determine the performance and efficiency of two major regional detention facilities (RDFs) with different designs and structures in reducing pollutants based on various storm events in McAllen, Texas. The two sites are the McAuliffe RDF and the Morris RDF; each site was incorporated with a constructed wetland with a different design and structure to enhance the pollutant removal process. The McAuliffe RDF reduced the concentration and load of many stormwater constituents in comparison to the Morris RDF. The observed concentrations and pollutant loads of suspended solids were much lower in the runoff of the inlet compared to the outlet for both sites. The McAuliffe RDF showed better concentration and load reduction for nutrients, such as nitrogen and phosphorus, of different species. However, both sites did not show a significant improvement of organic material. In addition, the indicator bacteria concentration represented a fluctuation between the inlet and outlet at each site.

【 授权许可】

Unknown