Biological nutrient removal from municipal and industrial wastewaters

Thesis/Dissertation · Tue Jan 01 04:00:00 EST 1985

OSTI ID:6106064

Udomsinrot, K

Biological phosphorus and nitrogen removal has received considerable interest in recent years. Basic benefits reported for biological nutrients removal include monetary savings through reduced aeration capacity, and the obviated expense for chemical treatment. A suspended growth biological treatment process was designed and operated to achieve high removals of carbon, nitrogen, and phosphorus from municipal and industrial wastewaters without the addition of chemicals; and to develop the biological kinetic coefficients of nutrient removal. The process utilized anoxic, anaerobic and aerobic reactor sequence with sludge return. The influent and return sludge were mixed into the first reactor. In this reactor and anoxic condition was maintained due to high nitrate and DO in the returned sludge. Sixty to eighty percent total nitrogen removal was achieved in this reactor. The contents were continuously discharged into the second reactor that maintained anerobic conditions. Under constant mixing and anaerobic environment complete release of phosphorus occurred as orthophosphate. The flow from the anaerobic reactor was continuously released into the third reactor that maintained aerobic condition. In the third reactor, high removal of carbonaceous material, high-rate biological nitrification, and high soluble phosphate removal occurred.

• Research Organization: Texas Univ., Arlington (USA)
• OSTI ID: 6106064
• Country of Publication: United States
• Language: English

Related Subjects

520200* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AEROBIC CONDITIONS
ANAEROBIC CONDITIONS
BIODEGRADATION
BIOREACTORS
CARBON
CHEMICAL REACTIONS
DECOMPOSITION
ELEMENTS
HYDROGEN COMPOUNDS
INDUSTRIAL WASTES
LIQUID WASTES
MANAGEMENT
MUNICIPAL WASTES
NITROGEN
NONMETALS
NUTRIENTS
OXYGEN COMPOUNDS
PHOSPHORUS
PROCESSING
REMOVAL
SEWAGE
SEWAGE SLUDGE
SLUDGES
WASTE MANAGEMENT
WASTE PROCESSING
WASTE WATER
WASTES
WATER