Environmental and economic profile of six typologies of wastewater treatment plants

Rodriguez-García, Gonzalo; Molinos-Senante, María; Hospido, Almudena; Hernández-Sancho, Francesc; Moreira, Marı́a Teresa

doi:10.1016/j.watres.2011.08.053

Cited by 257 publications

(85 citation statements)

References 40 publications

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“…Wang et al, 2012;Benetto et al, 2009;Gallego et al, 2008;Ortiz et al, 2007;Rodriguez-Garcia et al, 2011. MCDM It can simultaneously solve the discrete and continuous evaluation problems.…”

Section: Methods Advantagesmentioning

confidence: 99%

Constructing the ecological sanitation: a review on technology and methods

Fan

Wang

et al. 2016

Journal of Cleaner Production

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a b s t r a c tWastewater often contains valuable resources (e.g. organic matter and nutrients). Different from conventional sanitation approaches, the ecological sanitation (Eco-San) system is based on the closure of material flow cycles to recover resources with minimized demands on other resources. The review comprehensively summarized the main components of the Eco-San system (user interface, collection and conveyance, storage and primary treatment, and reuse/disposal), the frequently-used evaluation methods, and the framework of evaluation index system. Some typical practical cases were discussed to demonstrate the managerial implications and popularize the applications of the Eco-San system. The results show that the Eco-San systems are beneficial to resource efficiency, agricultural use of the organic matters and nutrients, and energy recovery although some shortages exist (e.g. high cost, cultural constraints, and complex operation and management). The evaluation methods can help to identify the restriction factors, contributing factors and measures to improve the efficiency of the future Eco-San system. The setting, selection and quantification are three critical steps when using the evaluation indices to complete the evaluation process. This study not only provides the methods for both developing novel Eco-San systems (combinations of the components) and improving the Eco-San systems (evaluation of the combinations) to solve the wastewater problem in rural areas. Considering the challenges or limitations in the Eco-San research, the recommendations for future research may mainly focus on the combination of different components, methods for sustainability assessment, quantification of the evaluation index, and implementation of more real Eco-San cases.

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“…Wang et al, 2012;Benetto et al, 2009;Gallego et al, 2008;Ortiz et al, 2007;Rodriguez-Garcia et al, 2011. MCDM It can simultaneously solve the discrete and continuous evaluation problems.…”

Section: Methods Advantagesmentioning

confidence: 99%

Constructing the ecological sanitation: a review on technology and methods

Fan

Wang

et al. 2016

Journal of Cleaner Production

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“…LCA has been widely used to evaluate the system performances of water and wastewater technologies. For example, LCA studies have addressed specific aspects of conventional centralized drinking or wastewater systems, i.e., various options for drinking water supply systems [18][19][20][21], centralized and decentralized wastewater treatment [22][23][24], stormwater management strategies [25], or entire water and wastewater service systems [26]. Several recent review articles summarized the LCA developments in the water management area and emphasized the continuing research needs [24,26,27].…”

Section: Introductionmentioning

confidence: 99%

Comparing the Life Cycle Energy Consumption, Global Warming and Eutrophication Potentials of Several Water and Waste Service Options

Xue

Hawkins²,

Schoen³

et al. 2016

Water

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Abstract:Managing the water-energy-nutrient nexus for the built environment requires, in part, a full system analysis of energy consumption, global warming and eutrophication potentials of municipal water services. As an example, we evaluated the life cycle energy use, greenhouse gas (GHG) emissions and aqueous nutrient releases of the whole anthropogenic municipal water cycle starting from raw water extraction to wastewater treatment and reuse/discharge for five municipal water and wastewater systems. The assessed options included conventional centralized services and four alternative options following the principles of source-separation and water fit-for-purpose. The comparative life cycle assessment identified that centralized drinking water supply coupled with blackwater energy recovery and on-site greywater treatment and reuse was the most energyand carbon-efficient water service system evaluated, while the conventional (drinking water and sewerage) centralized system ranked as the most energy-and carbon-intensive system. The electricity generated from blackwater and food residuals co-digestion was estimated to offset at least 40% of life cycle energy consumption for water/waste services. The dry composting toilet option demonstrated the lowest life cycle eutrophication potential. The nutrients in wastewater effluent are the dominating contributors for the eutrophication potential for the assessed system configurations. Among the parameters for which variability and sensitivity were evaluated, the carbon intensity of the local electricity grid and the efficiency of electricity production by the co-digestion with the energy recovery process were the most important for determining the relative global warming potential results.

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“…In accordance with recent literature (Lassaux et al, 2007;Rodriguez-Garcia et al, 2011) in order to ensure comparable results, it is necessary to define the functional unit used (e.g. person equivalent, volume of treated wastewater, eutrophication associated with the effluent in terms of kg PO4 3_ eq.…”

Section: Introductionmentioning

confidence: 99%

Environmental impact of submerged anaerobic MBR (SAnMBR) technology used to treat urban wastewater at different temperatures

Pretel

Robles

Ruano

et al. 2013

Bioresource Technology

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Elsevier Pretel, R.; Robles Martínez, Á.; Ruano García, MV.; Seco Torrecillas, A.;Ferrer, J. (2013) AbstractThe objective of this study was to assess the environmental impact of a submerged anaerobic MBR (SAnMBR) system in the treatment of urban wastewater at different temperatures: ambient temperature (20 and 33 ºC), and a controlled temperature (33 ºC). To this end, an overall energy balance (OEB) and life cycle assessment (LCA), both based on real process data, were carried out. Four factors were considered in this study: (1) energy consumption during wastewater treatment; (2) energy recovered from biogas capture; (3) potential recovery of nutrients from the final effluent; and (4) sludge disposal. The OEB and LCA showed SAnMBR to be a promising technology for treating urban wastewater at ambient temperature (OEB = 0.19 kWh·m -3 ). LCA results reinforce the importance of maximising the recovery of nutrients (environmental impact in eutrophication can be reduced up to 45%) and dissolved methane (positive environmental impact can be obtained) from SAnMBR effluent. KeywordsEnergy balance; global warming potential; life cycle assessment; submerged anaerobic MBR (SAnMBR); environmental impact. 2

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Environmental and economic profile of six typologies of wastewater treatment plants

Cited by 257 publications

References 40 publications

Constructing the ecological sanitation: a review on technology and methods

Constructing the ecological sanitation: a review on technology and methods

Comparing the Life Cycle Energy Consumption, Global Warming and Eutrophication Potentials of Several Water and Waste Service Options

Environmental impact of submerged anaerobic MBR (SAnMBR) technology used to treat urban wastewater at different temperatures

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