Using undisturbed columns to predict long term behaviour of effluent irrigated soils under field conditions
Using undisturbed columns to predict long term behaviour of effluent irrigated soils under field conditions
复制标题
使用原状柱预测田间条件下污水灌溉土壤的长期行为
DOI：
10.1071/sr06030
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发表时间：
2006
影响因子：
4.2
通讯作者：
A. Goonetilleke
中科院分区：
文献类型：
--
作者：
L. Dawes;A. Goonetilleke
土壤去除废水污染物的能力有限，而且随着时间的推移，这种能力实际上会下降。并非所有类型的土壤都有能力对污水进行适当的处理和分散。为了使持续的长期应用取得成功，土壤的渗透和排水特性不下降是至关重要的。此外，长期施用养分和阳离子对土壤的影响以及是否发生任何沥滤也至关重要。本文所述的研究项目比较了详细的实地研究的结果与原状土柱研究的结果，其中典型的土壤在东南地区的昆士兰州，澳大利亚已受到超过12个月的污水应用。多变量分析有助于对有影响的土壤特性进行分类，并确定施用污水后每种土壤的相对变化。在现场和加速柱研究中有影响力的土壤特性的识别和相关性证实，原状土柱研究可用于预测污水灌溉土壤的长期行为。
Soils only have a finite capacity for the removal of wastewater pollutants and with time this capacity could in fact decline. Not all soil types have the capacity to provide adequate treatment and dispersal of sewage effluent. For continued long term application to be successful, it is essential that infiltration and drainage characteristics of soils do not decline. Also it is critical how long term application of nutrients and cations affects the soils and whether any leaching occurs. The research project described in this paper compares the outcomes of detailed field studies with results from an undisturbed soil column study where typical soils in the South East region of Queensland State, Australia have been subjected to sewage effluent application over a period of 12 months. Multivariate analysis helped to classify the influential soil characteristics and to identify relative changes in each soil after the application of effluent. Identification and correlation of influential soil characteristics in field and accelerated column studies confirmed that undisturbed soil column studies can be useful in predicting long term behaviour of effluent irrigated soils.