Evaluating the Potential Hydrological Performance of a Bioretention Media with 100% Recycled Waste Components
Evaluating the Potential Hydrological Performance of a Bioretention Media with 100% Recycled Waste Components
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DOI：
10.3390/w13152014
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发表时间：
2021-07
期刊：
影响因子：
3.4
通讯作者：
S. De-Ville;Daniel Green;J. Edmondson;R. Stirling;Richard Dawson;V. Stovin
中科院分区：
文献类型：
--
作者：
S. De-Ville;Daniel Green;J. Edmondson;R. Stirling;Richard Dawson;V. Stovin
生物保留系统是一种流行的可持续排水系统(SODS)。然而，它们最大的单一成分--填充介质--往往是一种不可持续来源的材料。这项研究评估了一种生物修复填充介质，该介质包含100%可回收的废旧成分。填充介质成分来自多个废物流、建筑部门的采石场废物、来自生活垃圾的碎玻璃和绿色垃圾堆肥，以及来自食品加工部门的甜菜洗涤。对回收的填充介质的水力重要物理特性进行了评估，对照已报道的生物修复填充介质的文献实例，以及英国和国际指南文件。回收的填充介质的粒度分布被发现与文献中看到的不同，也不符合英国CIRIA‘The SODS手册’指南(d≥6 mm=45%vs.0%目标值)。然而，这并没有造成任何额外的不合规，实验室得出的饱和水力传导率(Ks=101 mm/h)和孔隙度(ϕ=44%)在推荐范围内(100≤Ks≤300 mm/h，ϕ>；30%)。SWMM被用来预测安装了回收填充介质的生物固位系统的性能，并与英国指南配置的系统进行了比较。研究发现，无论其颗粒大小分布如何，回收的填充介质将具有与英国指南兼容系统相似的性能。还需要进一步的工作来验证回收介质的预测性能。
Bioretention systems are a popular type of Sustainable Drainage System (SuDS). However, their largest single component, the fill media, is often a non-sustainably sourced material. This study evaluates a bioretention fill media comprising 100% recycled waste components. The fill media components come from multiple waste streams, quarry waste from the construction sector, crushed glass and green waste compost from domestic waste, and sugar-beet washings from the food processing sector. The hydraulically important physical characteristics of the recycled fill media were evaluated against reported literature examples of bioretention fill media, alongside UK and international guidance documentation. The particle size distribution of the recycled fill media was found to be unlike that seen in the literature and was also not compliant with the UK’s CIRIA ’The SuDS Manual’ guidance (d≥6 mm = 45% vs. 0% target). However, this did not result in any additional non-compliance, with laboratory-derived saturated hydraulic conductivity (Ks=101 mm/h) and porosity (ϕ=44%) within recommended ranges (100≤Ks≤300 mm/h, ϕ>30%). SWMM was used to predict the performance of a bioretention system installed with the recycled fill media compared to UK guidance configured systems. It was found that the recycled fill media would have similar performance to a UK guidance compliant system, irrespective of its particle size distribution. Further work is required to validate the predicted performance of the recycled media.