Improved urban stormwater treatment and pollutant removal pathways in amended wet detention ponds

A water quality model POND for eutrophication and pollutant removal in urban stormwater runoff detention ponds has been developed. The numerical simulation model is a relatively simple, one-dimensional deterministic water quality model consisting of a set of differential equations. Included are processes describing the removal and accumulation of dissolved and particulate constituents as well as processes concerning the yearly cycle of phytoplankton growth and nutrient transformations. The input to the pond is based on runoff quality data and a historical rainfall record. The model has been used to simulate eutrophication and removal of phosphorus and heavy metals in an urban runoff detention pond. Especially the importance of the pond volume, i.e. the residence time of the runoff water in the pond, for pollutant removal and eutrophication has been analysed. Simulations were carried out based on measured runoff quality data and a 33 years of rainfall record. Dry, normal and wet years and summers were selected for the analysis.

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Hydraulic and treatment performance of pervious pavements under variable drying and wetting regimes

Water Science & Technology ◽

10.2166/wst.2011.150 ◽

2011 ◽

Vol 64 (8) ◽

pp. 1692-1699 ◽

Cited By ~ 8

Author(s):

C. F. Yong ◽

A. Deletic ◽

T. D. Fletcher ◽

M. R. Grace

Keyword(s):

Suspended Solids ◽

High Flow ◽

Pollutant Removal ◽

Low Flow ◽

Storm Event ◽

Stormwater Treatment ◽

Storm Events ◽

Treatment Technology ◽

Porous Asphalt ◽

Treatment Performance

Pervious pavements are an effective stormwater treatment technology. However, their performance under variable drying and wetting conditions have yet to be tested, particularly under a continuous time scale. This paper reports on the clogging behaviour and pollutant removal efficiency of three pervious pavement types over 26 accelerated years. These pavements were monolithic porous asphalt (PA), Permapave (PP) and modular Hydrapave (HP). Over a cycle of 13 days, the period of which was equivalent to the average annual Brisbane, Australia rainfall (1,200 mm), the pavements were randomly dosed with four different flows. Drying events of 3 h duration were simulated during each flow. Inflow and outflow samples were collected and analysed for Total Suspended Solids (TSS), Total Phosphorus (TP) and Total Nitrogen (TN). To evaluate the rate of clogging, a 1 in 5 year Brisbane storm event was simulated in the 6th, 8th, 12th, 16th, 20th and 24th week. Under normal dosing conditions, none of the pavements showed signs of clogging even after 15 years. However, under storm conditions, both PA and HP started to clog after 12 years, while PP showed no signs of clogging after 26 years. The drying and various flow events showed no effects in TSS removal, with all systems achieving a removal of approximately 100%. The average TP removal was 20% for all flows except for low flow, which had a significant amount of leaching over time. Leaching from TN was also observed during all flows except high flow. The TSS, TP and TN results observed during storm events were similar to that of high flow.

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Urban stormwater treatment using bioretention

Journal of Hydrology ◽

10.1016/j.jhydrol.2010.11.023 ◽

2011 ◽

Vol 397 (3-4) ◽

pp. 167-174 ◽

Cited By ~ 106

Author(s):

Sam A. Trowsdale ◽

Robyn Simcock

Keyword(s):

Stormwater Treatment ◽

Urban Stormwater

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URBAN STORMWATER POLLUTANT REMOVAL EFFICIENCY OF CATCH BASIN INSERTS

Proceedings of the Water Environment Federation ◽

10.2175/193864703784828958 ◽

2003 ◽

Vol 2003 (4) ◽

pp. 1279-1294 ◽

Cited By ~ 1

Author(s):

Robert A. Morgan ◽

F.G. Edwards ◽

K.R. Brye

Keyword(s):

Removal Efficiency ◽

Pollutant Removal ◽

Urban Stormwater ◽

Catch Basin ◽

Pollutant Removal Efficiency

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Modelling urban stormwater treatment—A unified approach

Ecological Engineering ◽

10.1016/j.ecoleng.2005.10.014 ◽

2006 ◽

Vol 27 (1) ◽

pp. 58-70 ◽

Cited By ~ 99

Author(s):

Tony H.F. Wong ◽

Tim D. Fletcher ◽

Hugh P. Duncan ◽

Graham A. Jenkins

Keyword(s):

Stormwater Treatment ◽

Unified Approach ◽

Urban Stormwater

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Pollutant Loading Analysis of Suspended Solid, Nitrogen and Phosphorus at Bertam Catchment, Cameron Highlands using MUSIC

International Journal of Engineering & Technology ◽

10.14419/ijet.v7i4.35.23100 ◽

2018 ◽

Vol 7 (4.35) ◽

pp. 743

Author(s):

N.S.M. Noh ◽

L.M. Sidek ◽

S.H. Haron ◽

A. H. M. Puad ◽

Z. Selamat

Keyword(s):

Best Management Practices ◽

Management Practices ◽

Calculated Data ◽

Suspended Solid ◽

Stormwater Treatment ◽

Urban Stormwater ◽

Nitrogen And Phosphorus ◽

Reservoir Water ◽

Pollutant Loading ◽

Cameron Highlands

This paper aimed to analyze the pollutant loading composition of suspended solids, nitrogen and phosphorus in urban stormwater at Cameron Highlands which known as popular tourism, agriculture and function as reservoir water to generate electricity. Researchers found the urban stormwater quantity modeling has achieved sufficient accuracy benchmark. However, modeling stormwater runoff quality is relatively difficult and largely depends on catchment characteristics/land-uses. Model of Urban Stormwater Improvement Conceptualization (MUSIC) estimates pollutant transport from catchments and stormwater treatment through different application of Best Management Practices (BMPs). Result obtained from the observed and calculated data was compared with MUSIC's estimations under a similar scenario where no applications of BMPs. As a second scenario, series of treatment train is propose for each sub-catchments based on the suitability and verification on site that consists of constructed stormwater treatment BMPs (wetlands, bio-retention, on-site detention, sediment basin and gross pollutant traps). Implementation of BMPs reduce nearly 100% of gross pollutant, 65% - 83% TSS, 40% - 66% TP and 52% - 78% due to effectiveness of BMPs in treating the pollutant within different landuse. As a summary, MUSIC can conceptually determine the effectiveness of BMPs without giving a detailed design.

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Monitoring efficiency of urban stormwater treatment devices: discrete-sampling vs. diffusive gradient in a thin film technique

Water Practice & Technology ◽

10.2166/wpt.2007.051 ◽

2007 ◽

Vol 2 (2) ◽

Author(s):

S. A. Trowsdale ◽

G. C. Arnold

Keyword(s):

Thin Film ◽

Traditional Approach ◽

Stormwater Treatment ◽

Urban Stormwater ◽

Event Mean Concentration ◽

Discrete Sample ◽

Zn Concentration ◽

Thin Film Technique ◽

The Cost ◽

Mean Concentration

Monitoring the hydrochemical efficiency of urban stormwater treatment devices is not straightforward as the traditional, automated, discrete-sample approach is time-consuming and logistically expensive. An alternative monitoring technique, diffusive gradient in thin film (DGT), was tested alongside the traditional approach at an urban stormwater treatment basin. Pb concentrations in runoff were low to negligible, and the basin had little measurable effect. Using log-transformed Event Mean Concentration (EMC) the basin was calculated to reduce the Cu and Zn concentration by 39 and 51% respectively, but high variability meant there was no statistical evidence of a reduction. The DGT measurements not only suggested a higher efficiency for the basin (77% for Cu, 72% for Zn), but were also less variable providing confidence in the result. Simple modelling implied that the concentration in baseflow fluctuated. The cost effectiveness and low variability of the DGT technique may make it suited to the monitoring requirements of the stormwater industry.

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