How hydrological and hydraulic conditions affect performance of ponds

Persson, Jesper; Wittgren, Hans Bertil

doi:10.1016/j.ecoleng.2003.12.004

Cited by 154 publications

(79 citation statements)

References 12 publications

(15 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…189 190 191 192 193 194 195 196 197 198 The volume of the water compartment and the number of serial reactors were defined to represent the measured hydraulic behaviour of the Lilla Essingen pond. Persson and Wittgren (2003) and Jansons et al (2005) estimated a λ value around 0.9 for a pond with similar layout. The eight-reactor configuration which was adopted to simulate the Lilla Essingen pond ensured a λ equal to 0.88.…”

Section: Mp Fate Modelsmentioning

confidence: 92%

Modelling the fate of organic micropollutants in stormwater ponds

Vezzaro

Eriksson

Ledin

et al. 2011

Science of The Total Environment

View full text Add to dashboard Cite

Urban water managers need to estimate the potential removal of organic micropollutants (MP) in stormwater treatment systems to support MP pollution control strategies. This study documents how the potential removal of organic MP in stormwater treatment systems can be quantified by using multimedia models. The fate of four different MP in a stormwater retention pond was simulated by applying two steady-state multimedia fate models (EPI Suite and SimpleBox) commonly applied in chemical risk assessment and a dynamic multimedia fate model (Stormwater Treatment Unit Model for Micro Pollutants -STUMP). The four simulated organic stormwater MP (iodopropynyl butylcarbamate -IPBC, benzene, glyphosate and pyrene) were selected according to their different urban sources and environmental fate. This ensures that the results can be extended to other relevant stormwater pollutants. All three models use substance inherent properties to calculate MP fate but differ in their ability to represent the small physical scale and high temporal variability of stormwater treatment systems. Therefore the three models generate different results. A Global Sensitivity Analysis (GSA) highlighted that settling/resuspension of particulate matter was the most sensitive process for the dynamic model. The uncertainty of the estimated MP fluxes can be reduced by calibrating the dynamic model against total suspended solids data. This reduction in uncertainty was more significant for the substances with strong tendency to sorb, i.e. glyphosate and pyrene and less significant for substances with a smaller tendency to sorb, i.e. IPBC and benzene. The results provide support to the elaboration of MP pollution control strategies by limiting the need for extensive and complex monitoring campaigns targeting the wide range of specific organic MP found in stormwater runoff.Please cite the published version of this article as: . Modelling the fate of organic micropollutants in stormwater ponds.

show abstract

Section: Mp Fate Modelsmentioning

confidence: 92%

Modelling the fate of organic micropollutants in stormwater ponds

Vezzaro

Eriksson

Ledin

et al. 2011

Science of The Total Environment

View full text Add to dashboard Cite

show abstract

“…-Hydrology and hydraulic design of the wetland (Kadlec, 1989;Owen, 1995;Persson and Wittgren, 2003).…”

Section: Previous Workmentioning

confidence: 99%

“…It has been found that wetlands are efficient in removing fecal colliforms, BOD, COD, and TSS (all around 90%) although showing low efficiency in NH 3 -N (50-60%), and P (25-45%) removal (Juwarkar et al, 1995;Kantawanichkul et al, 1999;Platzer, 1999;Manios et al, 2003;Mbuligwe, 2005;Steer et al, 2005). However, high removal rate of BOD, COD is influenced by organic loading rate (Persson and Wittgren, 2003). With high loading rate, removal efficiency of BOD, and COD can even decrease to 70%.…”

Section: Previous Workmentioning

confidence: 99%

The I-70 Greenfield Rest Area Wetland Projectss

Kao¹,

Chang²,

Sultana³

2009

View full text Add to dashboard Cite

Prepared in cooperation with the Indiana Department of Transportation and Federal Highway Administration. AbstractOn-site treatment of wastewater at highway rest areas poses some unique and difficult challenges because of the rural locale, high variability in wastewater flow rate and strength, and lack of knowledgeable personnel on-site. As a potential alternative, a constructed subsurface wetland system was built at the I-70 rest stop nearby Greenfield, Indiana, in 2003. This wetland system, mainly composed of three wetland cells, also includes draw-and-fill and recirculation mechanisms to increase oxygen transfer to the wastewater and improve the overall treatment performance. Special considerations for highway rest areas have been emphasized. A dynamic hydraulic model was developed to help characterize the flows in the system and estimate the hydraulic retention time. The size of the Greenfield wetland was found to be sufficient in providing pretreatment that could help avoid potential surcharge from the local treatment plant, but was inadequate for direct onsite discharge. Though the draw-and-fill and recirculation mechanisms provided some treatment benefits, they raised the construction costs and maintenance needs. Constructed wetlands have been described as low-maintenance systems compared to other conventional wastewater treatment approaches, but proper maintenance of the wetland facilities was found to be a key factor in achieving good performance. Since wetland systems in highway rest areas have not been studied, this study provided useful information for possible future implementation of such systems. Key WordsWastewater treatment, wetlands, highway rest areas, recirculation system. Distribution StatementNo restrictions. This document is available to the public through the National Technical Information Service, Springfield, VA 22161 ACKNOWLEDGEMENTS Gratitude is expressed to the Joint Transportation Research Program (JTRP) at PurdueUniversity for providing the funds to conduct the research described here. Numerous people have been involved with this project in various capacities, and they have been listed below. Their help in this effort is acknowledged. SUMMARYOn-site treatment of wastewater at highway rest areas poses some unique and different challenges. As a potential alternative, a constructed subsurface wetland system was built at the I-70 rest stop nearby Greenfield, Indiana in 2003. This wetland system, mainly composing of three wetland cells, also includes special cyclic draw-and-fill and recirculation mechanisms to increase oxygen transfer to the wastewater and improve the overall treatment performance. Additionally, a sand mound biofield was also included to test the applicability of final treatment and subsurface discharge.After several years of system operation, this final report summarizes the overall project experience. The size of Greenfield wetland was found to be sufficient in providing pretreatment that could help avoid potential surcharge from the local treatment plant, bu...

show abstract

“…Waste removal efficiencies in these systems are highly dependent on hydraulic performance [15], and unsatisfactory hydraulic control is one of the main factors contributing to poor pond performance, especially after years of operation [16]. WSPs are notoriously hydraulically inefficient, and pond hydraulics are further compromised by sludge accumulation and distribution over time [17].…”

Section: Introductionmentioning

confidence: 99%

Impact of Hydrodynamic Reconfiguration with Baffles on Treatment Performance in Waste Stabilisation Ponds: A Full-Scale Experiment

Coggins

Sounness

Zheng

et al. 2018

Water

View full text Add to dashboard Cite

Abstract:Wastewater infrastructure is expensive to build and maintain, and there is a need to focus on improving and modernising existing infrastructure before large capital investments are made to service future population needs. Waste stabilisation ponds (WSPs) are used worldwide for the treatment of wastewater, but their performance is significantly affected by poor hydraulic control. Hydraulic reconfiguration of ponds is a possible solution to this problem, whereby the flow is controlled and short-circuiting is reduced. There is evidence to suggest that this approach has the potential to increase treatment performance, however in the absence of full-scale validation it is difficult to generalise this to a wide range of sites. For example, there is no consensus on the best baffle configuration to optimise hydraulic performance. The main objective of this study was to conduct a full-scale experiment of baffles in a WSP, and to investigate their impact on hydraulic performance. To achieve this objective, the approach combined high-resolution pond bathymetry and 2D hydrodynamic modelling, assessed with hydraulic indices, to determine the optimal baffle configuration for the site; it was shown that three baffles perpendicular to the inflow provided the greatest increase (up to 24%) in mean residence time. This configuration was then implemented in a working WSP. The effects of the baffles on the pond were then assessed using a combination of field tracer testing, revealing an increase in mean residence time of at least 20%, and further hydrodynamic modelling. Through the addition of wind data into the hydrodynamic model, it is shown that baffles not only improve the flow, but also attenuate the effect of wind on pond hydraulics. While the conclusions of this study are site-specific, the implementation of site-specific solutions is important for progress towards optimal pond design. The approach developed here is easily transferrable for use on other sites, and will enhance our ability to plan, design and operate WSP systems in the future.

show abstract

How hydrological and hydraulic conditions affect performance of ponds

Cited by 154 publications

References 12 publications

Modelling the fate of organic micropollutants in stormwater ponds

Modelling the fate of organic micropollutants in stormwater ponds

The I-70 Greenfield Rest Area Wetland Projectss

Impact of Hydrodynamic Reconfiguration with Baffles on Treatment Performance in Waste Stabilisation Ponds: A Full-Scale Experiment

Contact Info

Product

Resources

About