Process of treating gas condensate

Patent · Tue Nov 06 04:00:00 EST 1984

OSTI ID:6099221

Hitzel, H

The sewage consists of gas condensates from coal-gasifying plants and/or coal chemical plants and contains the anions SO/sub 4/--, SCN-, NO/sub 3/-, Cl- and F- in a total of at least 2 mval/l and contains organic matter corresponding to a chemical oxygen demand of at least 1000 mg/l. The sewage is passed through a biological purification stage, and a succeeding fine purification stage. In an anion exchanger, strong anions are exchanged with hydrogen carbonate ions. The water leaving the anion exchange stage has an alkalinity of at least 2 mval/l and is passed at least in part through a cation exchanger before the water is recycled to the sewage. The water which has left the anion exchanger may be used as cooling water in a cooling tower before or after the cation exchanger. Organic acids are used for regeneration in the cation exchanger and the regeneration eluate is added to the sewage which is to be treated in the biological purification stage.

• Assignee: Hans Hitzel Inc. (Germany, Federal Republic of)
• Patent Number(s): US 4481112
• OSTI ID: 6099221
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010800* -- Coal
Lignite
& Peat-- Waste Management
ADDITIVES
ANIONS
CATIONS
CHARGED PARTICLES
CHEMICAL COMPOSITION
COAL GASIFICATION PLANTS
CONDENSATES
FLUIDS
GAS CONDENSATES
HYDROGEN COMPOUNDS
INDUSTRIAL PLANTS
ION EXCHANGE MATERIALS
IONS
LIQUIDS
MANAGEMENT
MATERIALS
NATURAL GAS LIQUIDS
OXYGEN COMPOUNDS
PH VALUE
PRECIPITATION
PROCESSING
PURIFICATION
REGENERATION
SEPARATION EQUIPMENT
SEPARATION PROCESSES
SEWAGE
WASTE MANAGEMENT
WASTE PROCESSING
WASTES
WATER
WATER TREATMENT