Estimating the cost efficiency and marginal cost of carbon reductions in the production of drinking water

被引:7
|
作者
Molinos-Senante, Maria [2 ,3 ]
Maziotis, Alexandros [2 ]
Sala-Garrido, Ramon [1 ]
Mocholi-Arce, Manuel [1 ]
机构
[1] Univ Valencia, Dept Math Econ, Avd Tarongers S-N, Valencia, Spain
[2] Pontificia Univ Catolica Chile, Dept Ingn Hidraul & Ambiental, Ave Vicuna Mackenna, Santiago 4860, Chile
[3] Univ Valladolid, Inst Sustainable Proc, C Mergelina,S-N, Valladolid, Spain
关键词
Greenhouse gas emissions; Drinking water treatment; Performance; Stochastic frontier analysis; Environmental variables; Water industry; ENERGY-CONSUMPTION; TREATMENT PLANTS; K-MEDOIDS; PERFORMANCE; EMISSIONS; BENCHMARKING; UTILITIES; INTENSITY; PROVISION; NEXUS;
D O I
10.1016/j.scs.2022.104091
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
Access to safe, reliable and affordable drinking water is a human right that should be achieved without neglecting Sustainable Development Goal 13 of the United Nations related to climate action. The production of drinking water involves using a non-negligible amount of energy, leading to relevant economic costs and greenhouse gas (GHG) emissions. Here, we employed a parametric method to assess the cost efficiency of a sample of drinking water treatment plants (DWTPs) and to estimate the marginal cost of reducing GHG emissions. The average cost efficiency was 0.386, indicating that the evaluated DWTPs had notable room (61.4%) to save costs. The average marginal cost was estimated at 30 euro per ton of CO2(eq). When comparing this value with the current carbon costs of carbon trading systems, reducing the GHG emissions of DWTPs might be cost-effective. The parametric approach enabled us to evaluate the influence of several environmental variables on the cost efficiency and marginal cost of reducing GHG emissions. Specifically, the size of the facility and source of raw water significantly influenced DWTP performance. In conclusion, this study provides a novel tool to obtain in-sights on the water-energy nexus for informed decisions towards a more sustainable urban water cycle.
引用
收藏
页数:9
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