Treatment of coal gasification wastewater using rotating biological contactors. [Total organic carbon]

Technical Report · Fri Jun 01 04:00:00 EDT 1984

OSTI ID:6844138

Wernberg, K B; Strain, J H; Turner, C D; Gallagher, J R

Reuse of coal gasification process water for makeup cooling tower water requires physical, chemical and biological treatment to prevent excessive corrosion and bio-fouling in the tower. Pretreated wastewater contains about 2100 mg/l BOD, 5800 mg/l COD, 2000 mg/l TOC, 560 mg/l ammonia, 30 mg/l cyanide, 190 mg/l thiocyanate, 180 mg/l phenols, and 1700 mg/l hydantoins. Single-stage RBC treatment was effective in biotreatment of this wastewater even though feed strength was highly variable. Removals at a hydraulic loading of 1 gpd were 94% for BOD, 33.8% for COD, 33% for TOC, and 100% for phenols. Ammonia, thiocyanate, cyanide and hydantoins were not removed to any significant degree in this system. 6 references, 10 figures, 4 tables.

• Research Organization: North Dakota Univ., Grand Forks (USA)
• DOE Contract Number: FC21-83FE60181
• OSTI ID: 6844138
• Report Number(s): DOE/FE/60181-50; CONF-840749-1; ON: DE84013302
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010404 -- Coal
Lignite
& Peat-- Gasification
010800* -- Coal
Lignite
& Peat-- Waste Management
ALCOHOLS
AMIDES
AMMONIA
ANTITHYROID DRUGS
AROMATICS
BIOCHEMICAL OXYGEN DEMAND
BIODEGRADATION
BIOREACTORS
BLOWDOWN
CARBONIC ACID DERIVATIVES
CHEMICAL OXYGEN DEMAND
CHEMICAL REACTIONS
COAL GASIFICATION PLANTS
COOLING TOWERS
CYANIDES
DATA
DECOMPOSITION
DRUGS
EXPERIMENTAL DATA
HORMONE ANTAGONISTS
HYDRIDES
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
INDUSTRIAL PLANTS
INFORMATION
LIQUID WASTES
MECHANICAL STRUCTURES
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OXYGEN COMPOUNDS
PHENOLS
REMOVAL
THIOCYANATES
TOWERS
WASTE WATER
WASTES
WATER
WATER TREATMENT