Efficiency of Duckweed (Lemnaceae) for the Desalination and Treatment of Agricultural Drainage Water in Detention Reservoirs
Efficiency of Duckweed (Lemnaceae) for the Desalination and Treatment of Agricultural Drainage Water in Detention Reservoirs
复制标题
浮萍（浮萍科）对滞留水库农业排水的淡化和处理的功效
DOI：
10.1007/978-3-319-01017-5_25
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
M. Khamidov
中科院分区：
文献类型：
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作者：
D. Balla;M. M. Omar;S. Maassen;A. Hamidov;M. Khamidov
土壤盐碱化和水矿化程度高是干旱和半干旱地区的主要问题之一，特别是在中亚和北非。除了技术性的水管理解决方案外，植物补救的配套方法已在与灌溉排水系统相结合的蓄水池中得到科学证明。我们报告的调查方法有关的水生植物浮萍科（浮萍）的盐吸收潜力，并就技术建设要求，以加强净化排水水库。该方法的评估是在莱布尼茨农业景观研究中心（ZALF）的实验室条件下进行的。结果表明，浮萍在其组织中以封闭形式的吸盐行为取决于盐渍化程度和初始生物量密度。吸收效应可以描述为一级衰变反应。衰减/吸收取决于在水体中的停留时间。为了最大限度地提高水库的滞留时间，水库中的挡板和入口结构的影响进行了研究，使用二维水力模型与模型包TELEMAC。因此，建议中亚区域采用这种方法，作为对付水体高盐度的一项措施。
High levels of soil salinity and water mineralization are one of the major problems in arid and semi-arid areas, in particular in Central Asia and North Africa. Besides technological water management solutions, accompanying methods of phytoremediation have been scientifically proven in detention ponds which are integrated into irrigation drainage systems. We report on investigation methods concerning the salt uptake potential of the aquatic macrophytesLemnaceae(duckweed), and regarding technical construction requirements to enhance the purification of drainage water in water reservoirs. The assessment of this method was carried out under laboratory conditions at the Leibniz Centre for Agricultural Landscape Research (ZALF). The results demonstrate that the salt uptake behaviour of duckweed in the form of enclosure in its tissues depends on the degree of salinisation and the initial biomass density. The uptake effect can be described as a first-order decay reaction. The decay/uptake depends on the residence time within the water body. To maximize the detention time in reservoirs the effect of baffles and inlet constructions in the reservoir are investigated using 2D hydraulic modelling with the model package TELEMAC. Therefore, this method is proposed for Central Asian regions as a measure to be taken against high levels of salinity in water bodies.