Theses and Dissertations

Issuing Body

Mississippi State University

Advisor

Gallo, Warren C.

Committee Member

Wilkerson, G. Wayne

Committee Member

Krӧger, Robert

Date of Degree

12-14-2013

Document Type

Graduate Thesis - Open Access

Major

Landscape Architecture

Degree Name

Master of Landscape Architecture

College

College of Agriculture and Life Sciences

Department

Department of Landscape Architecture

Abstract

Urban stormwater management is evolving toward sustainable approaches which rely on dispersed small-scale bioretention BMPs. One such BMP is the flow-through planter, commonly applied in areas where infiltration into in situ soil is restricted or not possible. A project was developed to evaluate 18, vertically scaled flow-through mesocosms. Three replicates of six treatments, including four soil mixtures containing varied percentages of sand, compost and topsoil, were tested for orthophosphate and nitrate removal, volume reduction capabilities, and peak flow attenuation through the application of a synthetic solution over a simulated 2-inch, Type II storm event. Runoff volume was significantly (p < 0.05) reduced compared to controls. Nutrient levels observed along the hydrograph at different time-steps and flow rates revealed patterns not apparent in cumulative results. The observation of preferential flow patterns along with variability in nutrient removal across treatments highlights the need for design modifications of flow-through facilities.

URI

https://hdl.handle.net/11668/18903

Download

Share

COinS