Biological activated carbon as tertiary treatment for municipal-industrial wastewater

Thesis/Dissertation · Wed Jan 01 04:00:00 EST 1986

OSTI ID:6713832

Smith, R P

Granular Activated Carbon (GAC) as tertiary treatment to secondary biological effluent (trickling filters) was studied at Duck Creek Wastewater Treatment Plant, Garland, Texas. Two sets of pilot plants were operated for a period of eighteen months to determine optimum treatment conditions to obtain best effluent water quality. Performance of the pilot plants far exceeded expectations of pollutant removal capacity which could be achieved by adsorption alone. The sustained high level of treatment efficiency was attributed to biological activity within the GAC beds, generally referred to as Biological Activated Carbon. Increasing Empty Bed Contact Time (EBCT) improved performance, but pretreatments which increased dissolved oxygen concentration prior to GAC contact were more beneficial to effluent water quality than EBCT alone. No significant differences in water quality between pretreatment with oxygen or oxygen-ozone (10 mg/L applied ozone dose) were observed, demonstrating that the main benefit of oxygen-ozone was the oxygen component. Pretreatment with oxygen or oxygen-ozone resulted in nitrification, achieving 85% ammonia reduction, from 10 mg/L to 1 mg/L or less.

• Research Organization: Texas Univ., Dallas (USA)
• OSTI ID: 6713832
• Country of Publication: United States
• Language: English

Related Subjects

520200* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
560300 -- Chemicals Metabolism & Toxicology
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ACTIVATED CARBON
ADSORBENTS
ADSORPTION
CARBON
CHEMICAL EFFLUENTS
CHEMICAL REACTIONS
EFFICIENCY
ELEMENTS
ENVIRONMENTAL QUALITY
FEDERAL REGION VI
FUNCTIONAL MODELS
HYDROGEN COMPOUNDS
LIQUID WASTES
MICROORGANISMS
NITRIFICATION
NONMETALS
NORTH AMERICA
OXYGEN
OXYGEN COMPOUNDS
OZONE
PILOT PLANTS
POLLUTANTS
SORPTION
TEXAS
USA
WASTE WATER
WASTES
WATER
WATER QUALITY
WATER TREATMENT