Texaco coal gasification wastewater handling and treatment pilot plant

Technical Report · Sun Jul 01 04:00:00 EDT 1990

OSTI ID:7029694

Klock, B V; Vuong, D C; Webster, G H ^[1]

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1. Texaco, Inc., Port Arthur, TX (USA). Port Arthur Research Labs.

The Cool Water Coal Gasification Program (CWCGP) provided the first commercial scale demonstration of Integrated Gasification Combined Cycle (IGCC) power production from coal. Water treating at Cool Water was simplified by the plant's location in the Mojave desert which allowed the use of evaporation ponds. Because most utilities will not be able to dispose of plant wastewater in evaporation ponds, a water treating pilot plant was installed at Cool Water to provide a basis for the design of future effluent treatment facilities. All of the pilot plant's equipment and operations costs were paid by Texaco. The overall treatment results were sponsored by EPRI and are being made available to member utilities in this report. The pilot plant test, which processes wastewater from the gasification of SUFCo coal, were conducted during the first four months of 1989. The wastewater (grey water) was characterized by the presence of cyanide, sulfide, ammonia, coal ash particles, and formate. The Texaco process removed these constituents from the wastewater by: (1) reacting cyanide and sulfide with ferrous iron; (2) settling and filtering out the solids; (3) steam stripping the ammonia; and (4) biologically treating for formate. The work showed that the Texaco Gasification Wastewater Treatment Process (TGWTP) can be utilized to treat Texaco coal gasification plant wastewater to very low contaminant levels. The work also indicated that a reduction in water treatment capital cost can be obtained by concentrating the wastewater prior to treatment.

• Research Organization: Electric Power Research Inst., Palo Alto, CA (USA); Texaco, Inc., Port Arthur, TX (USA). Port Arthur Research Labs.
• Sponsoring Organization: EPRI
• OSTI ID: 7029694
• Report Number(s): EPRI-GS-6819-Vol.1
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010404 -- Coal
Lignite
& Peat-- Gasification
20 FOSSIL-FUELED POWER PLANTS
200202* -- Fossil-Fueled Power Plants-- Waste Management-- Noxious Gas & Particulate Emissions
BORON
COAL GASIFICATION
COMBINED-CYCLE POWER PLANTS
CYANIDES
DISPERSIONS
DOCUMENT TYPES
ELEMENTS
ENVIRONMENTAL QUALITY
GASIFICATION
HALIDES
HALOGEN COMPOUNDS
HYDROGEN COMPOUNDS
LIQUID WASTES
MINERALS
MIXTURES
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PERFORMANCE
PH VALUE
POWER PLANTS
PROGRESS REPORT
SALTS
SEMIMETALS
SLURRIES
SUSPENSIONS
TEXACO GASIFICATION PROCESS
THERMAL POWER PLANTS
THERMOCHEMICAL PROCESSES
WASTE WATER
WASTES
WATER
WATER QUALITY
WATER TREATMENT PLANTS