Electrokinetic densification of solids in a coal-mine sediment pond: A feasibility study (in two parts). 2. Design of an operational system. Report of Investigations/1988

Technical Report · Fri Jan 01 04:00:00 EST 1988

OSTI ID:6472314

Sprute, R H; Kelsh, D J; Thompson, S L

The Bureau of Mines conducted a feasibility study and designed an operational system for consolidating waste coal sludge in a 110-acre pond by applying direct current between buried and floating electrodes. Consolidation would reduce the sludge to half its present volume, thereby extending the working life of the pond as well as creating a safe, stable impoundment. The project was conducted by the Bureau under an agreement with the Washington Irrigation and Devevelopment Co. (WIDCO), located near Centralia, WA. Part 1 of the report, published as Report of Investigations 8666 in 1982, covers the results of laboratory tests at the Bureau's Spokane Research Center and of 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(the paper ) describes a detailed design for an electrokinetic 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. The study and design are site specific, but design procedures and analyses are sufficiently detailed to serve as a guide for applying the process to any sludge pond.

• Research Organization: Bureau of Mines, Spokane, WA (USA). Spokane Research Center
• OSTI ID: 6472314
• Report Number(s): PB-91-102160/XAB; BUMINES-RI--9137
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010800* -- Coal
Lignite
& Peat-- Waste Management
COAL MINING
COAL PREPARATION PLANTS
COMPACTING
COST
CURRENT DENSITY
CURRENTS
DESIGN
ECONOMICS
ELECTRIC CURRENTS
ELECTRODES
FEASIBILITY STUDIES
FEDERAL REGION X
FIELD TESTS
INDUSTRIAL PLANTS
MANAGEMENT
MINIMIZATION
MINING
NATIONAL ORGANIZATIONS
NORTH AMERICA
PERFORMANCE
PONDS
RESEARCH PROGRAMS
SERVICE LIFE
SETTLING PONDS
SLUDGES
SOLID WASTES
SURFACE WATERS
TAILINGS
TESTING
TIME DEPENDENCE
US BUREAU OF MINES
US DOI
US ORGANIZATIONS
USA
VOLUME
WASHINGTON
WASTE MANAGEMENT
WASTE PROCESSING PLANTS
WASTES