Removal of organic matter in stormwater ponds: a plug-flow model generalisation from waste stabilisation ponds to shallow rivers

Araújo, Germário Marcos; Neto, Iran Eduardo Lima

doi:10.1080/1573062x.2019.1581231

Cited by 14 publications

(14 citation statements)

References 12 publications

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“…The reservoir (Lake Santo Anastácio) is located downstream the channel. It has a maximum depth of about 4 m and capacity of approximately 0.3 hm 3 (Araújo and Lima Neto 2018). Even in the dry season, the reservoir is constantly full, as it receives continuously untreated sewage from the channel.…”

Section: Study Areamentioning

confidence: 99%

Phosphorus dynamics in a highly polluted urban drainage channel-shallow reservoir system in the Brazilian semiarid

Araújo

Neto

Becker

2019

An. Acad. Bras. Ciênc.

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Section: Study Areamentioning

confidence: 99%

Phosphorus dynamics in a highly polluted urban drainage channel-shallow reservoir system in the Brazilian semiarid

Araújo

Neto

Becker

2019

An. Acad. Bras. Ciênc.

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“…Therefore, the present work presents values within the ranges reported by the literature, attesting to the representativeness of the rainfall-runoff model used for the lake basin under study. It is worth mentioning that the measured flow values obtained are subject to the variability of the hourly water consumption and, consequently, to the release of sanitary sewage into the drainage network since there are several unauthorized sewage connections in the drainage network inflow to the Santo Anastácio Lake [3,5], as mentioned. In addition, there are numerous uncertainties inherent to hydrological studies related to the variability of flows, notably in urban basins [2].…”

Section: Scenariosmentioning

confidence: 99%

“…Furthermore, higher flows into the lake are observed predominantly in the first half of the year, resulting from temporally concentrated rainfall, especially from January to May. In the second half of the year, the channel inflows are mostly derived from the contribution of the release of sanitary effluent to the galleries and channel, with average values of approximately 120 L•s −1 [3,4]. Therefore, the present work presents values within the ranges reported by the literature, attesting to the representativeness of the rainfall-runoff model used for the lake basin under study.…”

Section: Hydrological Model and Analysis Of Hydrological Variabilitymentioning

confidence: 99%

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Coupling Hydrological and Hydrodynamic Models for Assessing the Impact of Water Pollution on Lake Evaporation

Mesquita

Neto

2022

Sustainability

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The present study evaluated the impact of hydrological variability on the hydrodynamics of an urban lake in Brazil, considering water quality dynamics and its effects on evaporation. The Storm Water Management Model (SWMM) was applied to the lake basin, and the two-dimensional model CE-QUAL-W2 was used to simulate the hydrodynamics and lake evaporation. The two models were coupled to carry out the integrated basin-lake modeling. Then, two water quality models were applied: a transient complete mixing model and an empirical model based on wind speed. Time series of total phosphorus (TP) were generated, and empirical correlations between TP and hydrological variables were proposed. Modeled TP and measured biochemical oxygen demand (BOD) were correlated with monthly Class A pan coefficients (K) adjusted for the lake. The K-values were negatively correlated with TP modeled by the complete mixing model (R2 = 0.76) and the empirical model (R2 = 0.52), as well as by BOD measurements (R2 = 0.85). This indicates that water pollution attenuates evaporation rates. Scenarios of lake pollution and level reduction due to evaporation were also analyzed. The results from this study are important to improve the management of lakes and reservoirs by including the impact of pollution on the water balance.

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“…Total suspended solids (TSS) loads, which is carried out by stormwater runoff during wet weather, is considered as a major pollutant with deleterious effects on receiving water bodies, by transporting adsorbed pollutants, increasing water turbidity, inhibiting plant growth and diversity, blanketing spawning grounds, affecting river biota, and reducing the number of aquatic species [1]. Stormwater detention/retention ponds are one of the most commonly used hydraulic structures in stormwater management both in flooding control by mitigating the peak flow [2][3][4][5], and stormwater runoff quality control by mainly trapping the incoming suspended solids [6][7][8]. TSS trap efficiency of ponds is one of the most informative indicators for evaluating the performance of such facilities and some regulatory agencies have even proposed legislations for sediment removal criteria for stormwater ponds.…”

Section: Introductionmentioning

confidence: 99%

Numerical investigation of particles’ transport, deposition and resuspension under unsteady conditions in constructed stormwater ponds

Yan

Vosswinkel²,

Ebbert³

et al. 2020

Environ Sci Eur

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Background: Total suspended solids (TSS) loads carried by stormwater runoff is a major pollutant source on receiving water bodies. Stormwater ponds are widely used for controlling TSS discharge. However, the trap efficiency is not satisfactory because it is affected by many complex factors, which are not fully understood. Therefore, there is a necessity to gain insight into the sediment process in stormwater ponds for optimization design of stormwater ponds. To address this issue, we propose a novel modeling framework based on discrete phase model (DPM), aiming to fully represent the sediment transport, settling, and resuspension at grain scale under time-dependent conditions. Results: In the newly proposed method, heterogeneous characteristics of sediments' loads, varying flows and sediment loads, settling and resuspension effect at grain scale, time-dependent conditions, and turbulent effect are all well considered. The proposed models have been coded with C language and hooked in computational fluid dynamics software Fluent, and the methods were tested with a case of laboratory experimental setup. Different bed boundary conditions are tested and compared with the observation data for optimization parameters' identification. The simulation results demonstrated that the physically based DPM with the newly developed method can well reproduce the evolution of sediment transport, settling and resuspension behaviors compared with the scale experiment. Conclusions: The newly proposed method can accurately predict the trap efficiency and temporal-spatial sediment distribution. The decomposition of bed load motion at grain scale is a necessary and valid way to represent the sedimentation process in shallow ponds. The developed model could be a tool to help us gain insight into the sediment transport phenomena at grain scale in shallow tanks since it can provide detailed information which the experiment cannot.

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Removal of organic matter in stormwater ponds: a plug-flow model generalisation from waste stabilisation ponds to shallow rivers

Cited by 14 publications

References 12 publications

Phosphorus dynamics in a highly polluted urban drainage channel-shallow reservoir system in the Brazilian semiarid

Phosphorus dynamics in a highly polluted urban drainage channel-shallow reservoir system in the Brazilian semiarid

Coupling Hydrological and Hydrodynamic Models for Assessing the Impact of Water Pollution on Lake Evaporation

Numerical investigation of particles’ transport, deposition and resuspension under unsteady conditions in constructed stormwater ponds

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