INTERNALIZATION ANALYSIS OF ENVIRONMENTAL COSTS OF WASTEWATER TREATMENT IN THE VALENCIAN COMMUNITY, SPAIN

M. López, B. Sanz, J. Moreno
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引用次数: 3

Abstract

The need for water resources currently demands the development of measures to improve the management of these resources and increase their availability. However, these measures have an environmental impact that must be considered when carrying them out. The Water Framework Directive establishes that the economic and environmental costs of the activities carried out must be recovered, because this is necessary to ensure the sustainability of these activities and the continuity in the use of natural resources. The purification and reuse of wastewater is an activity within the framework of the circular economy that intends to reduce the environmental impact of contaminated water discharges and to increase the available resources. The problem is that this activity, being part of the production process, is linked to an environmental impact due to the use of chemical components, the construction of the facilities and, especially, the intensive energy consumption of the purification stations, since part of the energy comes from non-renewable sources. This environmental impact must be internalized in the cost structures through additional measures to mitigate it, so the objective of this paper is to determine the state of such internalization. Analyzing the costs of purification stations, the annual report of the EPSAR (Public Entity for Wastewater Sanitation of the Valencian Community) and the reports of the Hydrographic Confederations of Júcar and Segura, we can determine that there is no internalization in the stations, it is low in the EPSAR but increasing with time and for the Confederations the situation is complicated, as they cannot even recover their financial costs and the creation of several additional measures has been suspended. Finally, it has been found that there are economies of scale in terms of energy consumption of this activity, as well as significant potential energy savings during the purification process.
西班牙瓦伦西亚社区污水处理环境成本的内部化分析
目前对水资源的需要要求制定措施,以改进对这些资源的管理并增加其供应。然而,这些措施对环境有影响,在实施时必须加以考虑。《水框架指令》规定,必须收回所进行活动的经济和环境成本,因为这是确保这些活动的可持续性和自然资源使用的连续性所必需的。废水的净化和再利用是循环经济框架内的一项活动,旨在减少污水排放对环境的影响并增加可用资源。问题是,这项活动作为生产过程的一部分,由于使用化学成分,设施的建设,特别是净化站的密集能源消耗,与环境影响有关,因为部分能源来自不可再生资源。这种环境影响必须通过额外的措施在成本结构中内部化以减轻它,因此本文的目的是确定这种内部化的状态。分析净化站的成本、EPSAR(瓦伦西亚社区污水卫生公共实体)的年度报告以及Júcar和Segura水文联合会的报告,我们可以确定,这些站没有内部化,EPSAR的成本很低,但随着时间的推移而增加,对于联合会来说,情况很复杂。因为他们甚至无法收回他们的财政成本,并且已经暂停制定几项额外措施。最后,已经发现,在该活动的能源消耗方面存在规模经济,以及在净化过程中显著的潜在节能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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