Design of Storm-Water Retention Ponds with Floating Treatment Wetlands

AbstractExperimental investigations undertaken to optimize the layout of floating treatment wetlands (FTWs) for maximum hydraulic performance of storm-water retention ponds are described. The study is the first to investigate how the arrangement of an FTW in a storm-water retention pond affects its hydraulic performance. The size, orientation, and arrangement of FTWs were investigated as well as the influence of inlet arrangements on the effects that the FTW has on the system hydraulics. For all the tests, the FTWs were positioned centrally across the width of the pond. The results show that FTWs can significantly improve the hydraulic performance of storm-water retention ponds. The hydraulic performance is shown to depend on the position, size, and placing arrangement of an FTW in the pond as well as the inlet arrangement.

[1]  Jeffrey S. Glenn,et al.  Mixing Things Up: Preventing Short-Circuiting in Stormwater Ponds , 2008 .

[2]  F. Douglas Shields,et al.  Residence Time Distributions of Shallow Basins , 1987 .

[3]  A Shilton,et al.  Development of guidelines for improved hydraulic design of waste stabilisation ponds. , 2003, Water science and technology : a journal of the International Association on Water Pollution Research.

[4]  Alfred B. Cunningham,et al.  Floating islands as an alternative to constructed wetlands for treatment of excess nutrients from agricultural and municipal wastes - results of laboratory-scale tests , 2008 .

[5]  Nigel Grigg,et al.  Comparison of Computation Fluid Dynamics Simulation against Tracer Data from a Scale Model and Full-Sized Waste Stabilization Pond , 2008 .

[6]  Andy Shilton,et al.  Studies into the hydraulics of waste stabilisation ponds : a thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy in Environmental Engineering at Massey University, Turitea Campus, Palmerston North, New Zealand , 2001 .

[7]  Larry C. Brown,et al.  Quantifying the hydraulic performance of treatment wetlands using the moment index. , 2010 .

[8]  H. Wittgren,et al.  How hydrological and hydraulic conditions affect performance of ponds , 2003 .

[9]  Larry C. Brown,et al.  Effects of wetland depth and flow rate on residence time distribution characteristics , 2004 .

[10]  Anne F. Lightbody,et al.  Observations of short‐circuiting flow paths within a free‐surface wetland in Augusta, Georgia, U.S.A. , 2008 .

[11]  David J. Walker,et al.  Modelling Residence Time in Stormwater Ponds , 1998 .

[12]  G. J. Gascho,et al.  USE OF FLOATING VEGETATION TO REMOVE NUTRIENTS FROM SWINE LAGOON WASTEWATER , 2004 .

[13]  Tony Hoong Fatt Wong,et al.  Hydraulics efficiency of constructed wetlands and ponds , 1999 .

[14]  Chris C. Tanner,et al.  Components of floating emergent macrophyte treatment wetlands influencing removal of stormwater pollutants , 2011 .

[15]  B W Melville,et al.  Retrofitting a stormwater retention pond using a deflector island. , 2011, Water science and technology : a journal of the International Association on Water Pollution Research.

[16]  Jesper Persson,et al.  The hydraulic performance of ponds of various layouts , 2000 .

[17]  Anastasios I. Stamou,et al.  Evaluating the effect of inlet arrangement in settling tanks using the hydraulic efficiency diagram , 1994 .

[18]  David R. Jones,et al.  Analytical problems arising from the use of bromide and rhodamine WT as co-tracers in streams , 1990 .

[19]  J. German,et al.  FEM-ANALYS AV STROMNINGSFORHALLANDENA I EN DAGVATTENDAMM , 1998 .