Accession Number:

ADA090419

Title:

Disposal of Soluble Salt Waste from Coal Gasification,

Descriptive Note:

Corporate Author:

ARMY ARMAMENT RESEARCH AND DEVELOPMENT COMMAND ABERDEEN PROVING GROUND MD CHEMICAL SYSTEMS LAB

Personal Author(s):

• McKnight,Charles E.

Report Date:

1980-06-01

Pagination or Media Count:

14.0

Abstract:

This paper addresses pollutants in the form of soluble salts and resource recovery in the form of water and land. A design for disposal of soluble salts has been produced. The interactions of its parameters have been shown by a process design study. The design will enable harmonious compliance with United States Public Laws 92-500 and 94-580, relating to water pollution and resource recovery. In the disposal of waste salt solutions, natural water resources need not be contaminated, because an encapsulation technique is available which will immobilize the salts. At the same time it will make useful landforms available, and water as a resource can be recovered. There is a cost minimum when electrodialysis and evaporation are combined, which is not realizable with evaporation alone, unless very low-cost thermal energy is available or unless very high-cost pretreatment for electrodialysis is required. All the processes making up the proposed disposal process are commercially available, although they are nowhere operating commercially as one process. Because of the commercial availability of the processes, the proposed process may be a candidate best commercially available treatment for soluble salt disposal.

Descriptors:

• *WASTE DISPOSAL
• *SALTS
• *POLLUTION ABATEMENT
• *COAL
• RECOVERY
• PROCESSING
• WATER POLLUTION
• ENCAPSULATION
• POLLUTANTS
• EVAPORATION
• NATURAL GAS
• WATER RECLAMATION
• ELECTRODIALYSIS

Subject Categories:

• Water Pollution and Control

Distribution Statement:

APPROVED FOR PUBLIC RELEASE