Future challenges of coastal landfills exacerbated by sea level rise.

Future challenges of coastal landfills exacerbated by sea level rise.
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海平面上升加剧了沿海垃圾填埋场的未来挑战。

DOI:
10.1016/j.wasman.2020.01.027
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发表时间:
2020
期刊:
Waste management (New York, N.Y.)
影响因子:
--
通讯作者:
Beaven RP
Beaven RP
中科院分区:
--
文献类型:
--
作者:
Beaven RP

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在英格兰和威尔士,至少有1700个沿海垃圾填埋场位于沿海洪泛平原,至少有60个受到侵蚀的威胁,这说明了一个全球性的问题。这些垃圾填埋场是海岸线管理规划(SMP)的一个主要问题,旨在管理与洪水和海岸侵蚀相关的风险。在存在垃圾填埋场的地方,“守住防线”(要求建造或升级人工防御设施以维持现有海岸线)往往被选为首选的SMP方案,尽管政府目前没有提供资金。为了详细调查这些问题,三个案例研究垃圾填埋场被用来研究未来洪水和侵蚀的风险以及潜在的缓解方案。这些案例代表了沿海垃圾填埋场设置的对比范围。该研究包括考虑海平面上升和气候变化,这些因素加剧了垃圾填埋场的侵蚀和洪水风险。认识到沿海地区固体废物的释放是一个地质时间尺度的问题,如果忽视这些问题,这些问题将不会消失,这一点至关重要。未来的侵蚀和固体废物的释放被认为比洪水和垃圾填埋场的渗滤液释放更有威胁。然而,虽然可以评估沥滤液的排放,但目前缺乏评估固体废物排放风险的方法。因此,缺乏科学制约了补救办法的设计。
In England and Wales, there are at least 1700 coastal landfills in the coastal flood plain and at least 60 threatened by erosion, illustrating a global problem. These landfills are a major issue in shoreline management planning (SMP) which aims to manage the risks associated with flooding and coastal erosion. Where landfills exist, “hold the line” (requiring the building or upgrading of artificial defences to maintain the current shoreline) is often selected as the preferred SMP option, although government funding is not available at present. To investigate these issues in detail, three case-study landfills are used to examine the risks of future flooding and erosion together with potential mitigation options. These cases represent a contrasting range of coastal landfill settings. The study includes consideration of sea-level rise and climate change which exacerbates risks of erosion and flooding of landfills. It is fundamental to recognise that the release of solid waste in coastal zones is a problem with a geological timescale and these problems will not go away if ignored. Future erosion and release of solid waste is found to be more of a threat than flooding and leachate release from landfills. However, while leachate release can be assessed, there is presently a lack of methods to assess the risks from the release of solid waste. Hence, a lack of science constrains the design of remediation options.
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