Understanding nutrient build-up on urban road surfaces.
Understanding nutrient build-up on urban road surfaces.
复制标题
DOI：
10.1016/s1001-0742(09)60181-9
复制
发表时间：
2010-06
影响因子：
6.9
通讯作者：
Nandika. P. Miguntanna;A. Goonetilleke;Prasanna Egodowatta;S. Kokot
中科院分区：
文献类型：
--
作者：
Nandika. P. Miguntanna;A. Goonetilleke;Prasanna Egodowatta;S. Kokot
本文讨论了一个研究项目的结果，对城市道路表面的养分积累。研究了属于住宅、工业和商业用地的道路站点的养分积累情况。收集的累积样品分为五个粒度范围，并测试了总氮（TN），总磷（TP）和营养物质的亚种，即NO2-，NO3-，TKN和PO 43-。采用了多变量分析技术来分析数据，并详细了解积聚情况。数据分析表明，城市道路固体物负荷受土地利用、前期干旱期和交通量等因素的影响较大。然而，养分积累过程被认为是独立的类型的土地利用。它完全取决于固体颗粒的大小。大多数营养物质与<150 μm的粒径范围有关。因此，从路面上去除150 μm以下的颗粒对于从路面固体积聚中去除氮和磷非常重要。在设计有效的雨水质量缓解战略的背景下，考虑氮和磷积累的成分差异也很重要。
This article discusses the outcomes of a research project on nutrients build-up on urban road surfaces. Nutrient build-up was investigated on road sites belonging to residential, industrial and commercial land use. Collected build-up samples were separated into five particle size ranges and were tested for total nitrogen (TN), total phosphorus (TP) and sub species of nutrients, namely, NO2−, NO3−, TKN and PO43−. Multivariate analytical techniques were used to analyse the data and to develop detailed understanding on build-up. Data analysis revealed that the solids loads on urban road surfaces are highly influenced by factors such as land use, antecedent dry period and traffc volume. However, the nutrient build-up process was found to be independent of the type of land use. It was solely dependent on the particle size of solids build-up. Most of the nutrients were associated with the particle size range <150 μm. Therefore, the removal of particles below 150 μm from road surfaces is of importance for the removal of nitrogen and phosphorus from road surface solids build-up. It is also important to consider the difference in the composition of nitrogen and phosphorus build-up in the context of designing effective stormwater quality mitigation strategies.