Nitrification of anaerobically treated coal gasifier effluent

Journal Article · Sat Sep 01 04:00:00 EDT 1984 · J. - Water Pollut. Control Fed.; (United States)

OSTI ID:6148702

Lu, F

Coal gasifier effluent with high phenol, cresols and ammonia concentrations and lower amounts of cyanide, thiocyanate and other organic compounds was nitrified after treatment in an anaerobic fluidised-bed granular activated carbon filter. The single-stage biological nitrification system was operated at a solids retention time of 31 days and a hydraulic retention time of 18-30 hours. Removal efficiencies were 97% for total Kjeldahl nitrogen, 91% for TOC and 85% for COD; residual phenol and o-cresol were completely removed and removal of residual m-cresol and p-cresol depended on concentration. The nitrification process was inhibited by more than 15 mg/l of m-cresol and p-cresol, but this could be eliminated by addition of powdered activated carbon or periodic replacement of a portion of the granular activated carbon in the anaerobic filter.

• OSTI ID: 6148702
• Journal Information: J. - Water Pollut. Control Fed.; (United States), Journal Name: J. - Water Pollut. Control Fed.; (United States) Vol. 56:9; ISSN JWPFA
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010800* -- Coal
Lignite
& Peat-- Waste Management
ACTIVATED CARBON
ADSORBENTS
ANAEROBIC DIGESTION
AROMATICS
BIOCONVERSION
CARBON
CHEMICAL OXYGEN DEMAND
CHEMICAL REACTIONS
COAL GASIFICATION
COAL GASIFICATION PLANTS
CRESOLS
DIGESTION
ELEMENTS
GAS GENERATORS
GASIFICATION
HYDROXY COMPOUNDS
INDUSTRIAL PLANTS
LIQUID WASTES
MANAGEMENT
NITRIFICATION
NITROGEN
NONMETALS
ORGANIC COMPOUNDS
PHENOLS
PROCESSING
REMOVAL
THERMOCHEMICAL PROCESSES
WASTE MANAGEMENT
WASTE PROCESSING
WASTES