Field Study to Determine the Feasibility of Electro-Osmotic Dewatering of Dredged Material.

摘要

The theory of electro-osmosis states that the rate of flow through soil is proportional to the voltage gradient and the cross-sectional area. The constant of proportionality is not dependent upon soil porosity, but does vary with interstitial water salinity. The relationship is similar to Darcy's law for flow through a porous medium under the influence of a hydraulic gradient. In August 1976, the field installation was accomplished routinely; however, from September 1976 to January 1977, a series of problems caused by anode corrosion, surface water, and equipment servicing caused the system to be inoperative for a majority of the time. From 29 January through 14 March 1977, the system was in continuous operation. However, it appears that surface water infiltration at the anodes and desiccation cracks replaced water removed by the electro-osmosis system and resulted in no reduction in the moisture content of the dredged material.