Electrokinetic densification of solids in a coal mine sediment pond - A feasibility study (in two parts). 2. Design of an operational system

Part 1 of this report covers the results of laboratory tests at the Bureau's Spokane Research Center and a small-scale field test at WIDCO's coal preparation plant. Test results show the process is efficient and cost-effective when power is applied at low current density. Part 2 (this paper) describes a detailed design for an electro-kinetic system to dewater WIDCO's 110-acre pond with a 27.4-acre electrode array. Densification of the inactive sludge pond will require 3.6 yr of treatment for a total cost of $1,450,000.