Willow vegetation filters for wastewater treatment and soil remediation combined with biomass production
Willow vegetation filters for wastewater treatment and soil remediation combined with biomass production
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DOI：
10.5558/tfc77293-2
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发表时间：
2001-03-01
影响因子：
0.6
通讯作者：
Perttu, K
中科院分区：
文献类型：
--
作者：
Aronsson, P;Perttu, K
柳树和杨树等速生树木的植物过滤器作为废水和垃圾渗滤液常规处理的替代方案正变得越来越重要。短轮作杨柳是一种不可食用的作物，对合适的植物过滤器有许多要求。过滤能力(例如，氮素)非常高，作物促进根区的反硝化作用。它对重金属，特别是镉具有高度选择性的吸收，这使得修复受污染的土壤成为可能。此外，柳树具有较高的蒸散速率，有利于高负荷，例如，污染的垃圾渗滤液。由于城市污水和污泥中存在病原体，因此必须特别注意污水的储存和分配。在许多情况下，植物过滤器比传统的处理方法更具成本效益，还有助于回收社会中宝贵的资源。
Vegetation filters of fast-growing trees such as willows and poplars are becoming important as an alternative to conventional treatment of wastewater and landfill leachate. Short-rotation willow coppice is a non-edible crop and has many of the requirements for a suitable vegetation filter. The filtering capacity (e.g., of nitrogen) is very high, and the crop promotes denitrification in the root zone. It has a highly selective uptake of heavy metals, especially cadmium, which enables remediation of contaminated soils. In addition, willows have a high evapotranspiration rate facilitating high loads, e.g., of polluted landfill leachate. Because of the pathogens present in municipal wastewater and sludge, special attention must be paid to storage and distribution of wastewater. In many cases vegetation filters are more cost-effective than conventional treatment methods and also facilitate recycling of valuable resources in society.