NIOSHTIC-2 Publications Search

Well Point Dewatering of Phosphatic Clays.

Authors
Smith-CW; McLendon-JT
Source
MISSING :11 pages
Link
NIOSHTIC No.
10007341
Abstract
The U.S. Bureau of Mines conducted research to determine the effect of ground water control on the dewatering of phosphatic clay wastes. Two storage impoundments were constructed. One impoundment was surrounded on three sides with a series of well points (shallow vertical wells) to lower the ambient water table, and the second impoundment served as a control. Ground water was pumped from the area surrounding the test impoundment for a period of 490 days. A constant pumping rate of 60 gal/min resulted in a water table drawdown of 13 ft, approximating the bottom of the impoundment. At the end of the test period percent solids in the test impoundment was 35 pct, while in the control impoundment percent solids was only 26.8 pct. percent solids of greater than 30 pct is required for capping and final reclamation using fertile overburden.
Publication Date
19890101
Document Type
IH; Report of Investigations;
Fiscal Year
1989
Identifying No.
RI 9285
NIOSH Division
TURC;
Source Name
MISSING
Page last reviewed: April 12, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division