Water sustainability: A systems engineering approach to restoration of eutrophic Lakes

Estrada, Vanina; Maggio, Jimena Di; Díaz, María Soledad

doi:10.1016/j.compchemeng.2011.03.003

Cited by 19 publications

(11 citation statements)

References 54 publications

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“…Furthermore, as economies rapidly develop, the water quality of rivers and lakes is declining because of agricultural non-point source pollution that exacerbates water shortages. Subsequent water eutrophication may result in the loss of ecological integrity, a decrease in aquatic biodiversity, a decrease in variation of macrophyte communities, and an increase in the production of microcystins (Estrada et al 2011;Geurts et al 2009). Therefore, in situ ecoremediation technologies have been used in recent years for the treatment of wastewater.…”

Section: Introductionmentioning

confidence: 98%

Differences in the treatment efficiency of a cold-resistant floating bed plant receiving two types of low-pollution wastewater

Duan

Feng

et al. 2016

Environ Monit Assess

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A floating bed system vegetated with Oenanthe javanica was adopted in this study to treat two types of low-pollution wastewater (LPW): polluted river water (PRW) and treated domestic wastewater (DW). The water was treated for 111 days during the low-temperature season. The results indicated that the total nitrogen (TN) removal rates were higher in the DW groups than in the PRW groups during the initial 30 days. This difference may stem from the different C/N ratio of the influent. As the water temperature rose above 15.5 °C after March 12, the purification capability of nitrogen in the DW groups was enhanced, and the removal rates of TN were 89.8 and 76.8 % in DW and the control 2 at 111 days. Conversely, the performance of total phosphorus (TP) removal was robust during the initial stage of the experiment, despite receiving domestic wastewater with a relatively high N/P ratio (16:1). The TP removal rates in DW were as high as 91.5 % compared to 78.9 % in PRW at 30 days. At the same time, the N/P ratios of plant tissue were higher in the DW groups compared to that in the PRW groups. Plant uptake played a significant role in nutrient removal in the PRW groups (52.5 % for TN, 68.2 % for TP), followed by sedimentation. In contrast, plant uptake only accounted for 25.3 % of TN removal and 24.1 % of TP removal in DW. The results provide engineering parameters for the future design of an ecological remediation technology for LPW purification.

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Section: Introductionmentioning

confidence: 98%

Differences in the treatment efficiency of a cold-resistant floating bed plant receiving two types of low-pollution wastewater

Duan

Feng

et al. 2016

Environ Monit Assess

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“…Model parameters have been estimated based on collected data during 2004-2005 for Paso de las Piedras Reservoir (Estrada et al, 2009). For a more detailed description of the generation/consumption rate terms, see Estrada et al (2011). The entire model has 42 differential and 110 algebraic equations.…”

Section: Model Descriptionmentioning

confidence: 99%

“…One approach applied to address the problem of nonpoint nutrient sources for water bodies is the use of artificial wetlands. The development of ecological water models integrated to optimization strategies can help to propose and evaluate management strategies in both the short and long term (Estrada et al, 2011). Many physicochemical processes are involved in the reduction of nutrient concentration within wetlands, such as retention and assimilation by macrophytes, plankton and other microorganisms; sedimentation, adsorption from the sediments, among others (Langergraber et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Water Resources Management with Dynamic Optimization Strategies and Integrated Models of Lakes and Artificial Wetlands

Maggio¹,

Estrada²,

Diaz³

2015

12th International Symposium on Process Systems Engineering and 25th European Symposium on Computer Aided Process Engineering

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“…Industrial contributions are usually highly variable in volume and composition, and these variations are not easily foreseeable Muñoz et al 2013). Environmental concerns regarding UWS operation are extremely important, as effluents may alter the characteristics of the receiving waters (Corominas et al 2013;Devesa et al 2009;Estrada et al 2011;Hernandez and Uddameri 2013;Hosomi 2014;Ling et al 2014;Verdaguer et al 2014). Therefore, management systems must address a high level of complexity due to uncertain influent compositions (Shen et al 2008;Xu and Qin 2013).…”

Section: Introductionmentioning

confidence: 98%

An exact approach for the prioritization process of industrial influents in wastewater systems

Verdaguer

Suy

Villaret

et al. 2015

Clean Techn Environ Policy

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In wastewater systems, the efficiency of the treatment process is strongly related to the composition of its influent. When the treatment is overloaded (in volume and/or pollutants), its efficiency decreases and the effluent cannot attain the quality required by the receiving waters. This work considers the problem of mixing multiple wastewater streams, with multiple contaminants, into a single stream (the influent) on which various specifications are imposed. The problem has recently been solved by probabilistic methods that can achieve a nearly optimal solution. In this paper, an exact technique is proposed to find the optimal solution with a mixed-integer linear programming solver for the first time. The procedure is applied to a case study with different industrial effluents whose discharges will compose the influent to a treatment plant with constrained capacity (both in volume and pollutant loads). The optimal utility solution achieved describes the discharges that satisfy all constraints. This proposal constitutes an efficient way to manage treatment influents while reducing the computational time required by two orders of magnitude compared to probabilistic methods.

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Water sustainability: A systems engineering approach to restoration of eutrophic Lakes

Cited by 19 publications

References 54 publications

Differences in the treatment efficiency of a cold-resistant floating bed plant receiving two types of low-pollution wastewater

Differences in the treatment efficiency of a cold-resistant floating bed plant receiving two types of low-pollution wastewater

Water Resources Management with Dynamic Optimization Strategies and Integrated Models of Lakes and Artificial Wetlands

An exact approach for the prioritization process of industrial influents in wastewater systems

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