Concentration and size distribution of particles in abstracted groundwater

被引：14

作者：

van Beek, C. G. E. M. ^{[1
]}

de Zwart, A. H. ^{[2
]}

Balemans, M. ^{[1
]}

Kooiman, J. W. ^{[1
]}

van Rosmalen, C.

Timmer, H. ^{[3
]}

Vandersluys, J.

Stuyfzand, P. J. ^{[1
,4
]}

机构：

[1] KWR Watercycle Res Inst, NL-3430 BB Nieuwegein, Netherlands

[2] Delft Univ Technol, Rijswijk, Netherlands

[3] Water Util Oasen, Oasen, Netherlands

[4] Vrije Univ Amsterdam, Amsterdam, Netherlands

来源：

WATER RESEARCH | 2010年 / 44卷 / 03期

关键词：

Particle concentration; Particle size distribution; Groundwater; Pareto; MICROSPHERE TRANSPORT; POROUS-MEDIA; COLLOIDS; GRADIENT;

D O I：

10.1016/j.watres.2009.09.045

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Particle number concentrations have been counted and particle size distributions calculated in groundwater derived by abstraction wells. Both concentration and size distribution are governed by the discharge rate: the higher this rate the higher the concentration and the higher the proportion of larger particles. However, the particle concentration in groundwater derived from abstraction wells, with high groundwater flow velocities, is much lower than in groundwater from monitor wells, with minimal flow velocities. This inconsistency points to exhaustion of the particle supply in the aquifer around wells due to groundwater abstraction for many years. The particle size distribution can be described with the help of a power law or Pareto distribution. Comparing the measured particle size distribution with the Pareto distribution shows that particles with a diameter >7 mu m are under-represented. As the particle size distribution is dependent on the flow velocity, so is the value of the "Pareto" slope beta. (c) 2009 Elsevier Ltd. All rights reserved.

引用

页码：868 / 878

页数：11

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