Salt pollution of ground water
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An experimental model study was conducted to determine the behavior of induced motion in a salt water body overlain by fresh water. For the study, a narrow tank was constructed from plastic sheets of 0.25-inch thickness. The tank's overall length was 100 inches, its depth, 51 inches, and width, 0.06 inch. Salt water of various concentrations was injected always at the same level in the lower part of the tank. Fresh water, added at the top of the tank, was drawn out under the action of suction head through a 0.25-inch diameter nylon tube fixed at the top of the tank. The fresh water and salt water were fed to the tank from separate reservoirs. About seven discharge intervals, five concentrations, and only one level of salt water were used. For a given concentration, the development of the saline mound to a steady state was recorded for various discharges. The procedure was repeated for other concentrations. Before the start of each experiment, the tank and the reservoirs were thoroughly rinsed to eliminate any salt particles left from a previous experiment. The graphic plots for the rise of the saline mounds, the discharges of fresh water, and salt concentrations are nonlinear. The plot of rise versus discharge is concave upward, the one for rise versus concentration is convex downward, and the one for concentration versus discharge is convex upward.
This material is based upon work supported by the U.S. Geological Survey and the Missouri Water Center under the Grant/Cooperative Agreement.
The views and conclusions contained in this document are those of the authors and should not be interpreted as representing the opinions or policies of the U.S. Geological Survey or Missouri Water Center. Mention of trade names or commercial products does not constitute their endorsement by the U.S. Geological Survey or Missouri Water Center.
This material is based upon work supported by the U.S. Geological Survey and the Missouri Water Center under the Grant/Cooperative Agreement.
The views and conclusions contained in this document are those of the authors and should not be interpreted as representing the opinions or policies of the U.S. Geological Survey or Missouri Water Center. Mention of trade names or commercial products does not constitute their endorsement by the U.S. Geological Survey or Missouri Water Center.