Process of treating gas condensate
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
- Resource Relation:
- Patent Priority Date: Priority date 27 Jul 1983, Germany, Federal Republic of (F.R. Germany); Other Information: PAT-APPL-517880
- Country of Publication:
- United States
- Language:
- English
Similar Records
An Integrated Supercritical System for Efficient Produced Water Treatment and Power Generation
Characterization and treatment of coal gasification condensate waters
Related Subjects
COAL GASIFICATION PLANTS
SEWAGE
ION EXCHANGE MATERIALS
CHEMICAL COMPOSITION
WASTE PROCESSING
ADDITIVES
ANIONS
CATIONS
GAS CONDENSATES
PH VALUE
PRECIPITATION
PURIFICATION
REGENERATION
SEPARATION EQUIPMENT
WATER
WATER TREATMENT
CHARGED PARTICLES
CONDENSATES
FLUIDS
HYDROGEN COMPOUNDS
INDUSTRIAL PLANTS
IONS
LIQUIDS
MANAGEMENT
MATERIALS
NATURAL GAS LIQUIDS
OXYGEN COMPOUNDS
PROCESSING
SEPARATION PROCESSES
WASTE MANAGEMENT
WASTES
010800* - Coal
Lignite
& Peat- Waste Management