Concentration and size distribution of particles in abstracted groundwater

Water Res. 2010 Feb;44(3):868-78. doi: 10.1016/j.watres.2009.09.045. Epub 2009 Sep 22.

Abstract

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 microm are under-represented. As the particle size distribution is dependent on the flow velocity, so is the value of the "Pareto" slope beta.

MeSH terms

  • Models, Chemical
  • Netherlands
  • Particle Size*
  • Soil*
  • Water Supply / analysis*

Substances

  • Soil