Continuous process for the reclamation of waste drilling fluids

Patent · Tue Nov 13 00:00:00 EST 1984

OSTI ID:5979823

Shiver, C

A continuous process for the reclamation of a slurry of waste drilling mud fluids and water normally resulting from drilling operations. The process comprises the steps of conducting the drilling mud slurry to a slurry surge tank for liquid solid separation by chemical and physical methods. The mud slurry is subjected to a primary solids separation unit after pH adjustment is used to initiate coagulation and an organic flocculant is added to aid flocculation of the solids. The water is then subjected to a secondary solids removal, and the solids recovered are reintroduced in the primary solids separation unit. Thereafter the water obtained from the secondary solids removal is then subjected to a chemical oxygen demand reduction unit having a carbon adsorption unit or reverse osmosis membrane units therein to remove organic matter or dissolved solids to produce water meeting environmental discharge requirements. The solids removed from the primary solids separation unit are converted to a cake meeting leachate requirements for other beneficial use.

• Assignee: Newpark Waste Treatment Systems Inc.
• Patent Number(s): US 4482459
• OSTI ID: 5979823
• Resource Relation: Patent File Date: Filed date 27 Apr 1983; Other Information: PAT-APPL-489127
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
03 NATURAL GAS
DRILLING FLUIDS
DEMETALLIZATION
FLOCCULATION
MATERIALS RECOVERY
PRECIPITATION
SEPARATION EQUIPMENT
WASTE PROCESSING
WATER REMOVAL
BRINES
PETROLEUM
PH VALUE
POLLUTION CONTROL
SANITARY LANDFILLS
SOLID WASTES
WASTE PRODUCT UTILIZATION
CONTROL
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUELS
MANAGEMENT
PROCESSING
RECOVERY
REMOVAL
SEPARATION PROCESSES
WASTE DISPOSAL
WASTE MANAGEMENT
WASTES
020800* - Petroleum- Waste Management
030700 - Natural Gas- Waste Management