Startup and operation of a refinery activated sludge plant
The activated sludge process continues to be the preferred secondary wastewater treatment method for removal of biodegradable, soluble, organic matter. The mode of operation consists of contacting the substrate organic matter with a large population of viable microorganisms in an aerobic environment. The development of this mixed liquor population during startup of activated sludge plants can sometimes prove to be a laborious task affected by the seeding method employed. Factors which influence the microbial growth rate and, therefore, the length of time required to attain an acclimated mixed liquor culture, are temperature, organic loading, dissolved oxygen concentration and nutrient levels. This chapter reports on the startup of an activated sludge plant using enriched dried cultures at an Exxon refinery. Performance data during the startup period and typical operating data after attainment of a stable mixed liquor are included. The effect of phenol loadings of up to 200 mg/l on the activated sludge operation three weeks after wastewater in is reported. Operator training for the activated sludge plant is also discussed.
- Research Organization:
- Exxon Research and Engineering Co., Florham Park, NJ
- OSTI ID:
- 5373467
- Report Number(s):
- CONF-810577-
- Journal Information:
- Proc. Ind. Waste Conf.; (United States), Vol. 36; Conference: 36. annual Purdue industrial waste conference, Lafayette, IN, USA, 12 May 1981
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
54 ENVIRONMENTAL SCIENCES
PETROLEUM REFINERIES
WASTE PROCESSING
WASTE WATER
ACTIVATED SLUDGE PROCESS
ORGANIC COMPOUNDS
PHENOL
POLLUTION CONTROL
REMOVAL
START-UP
AROMATICS
CONTROL
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
INDUSTRIAL PLANTS
LIQUID WASTES
MANAGEMENT
OXYGEN COMPOUNDS
PHENOLS
PROCESSING
WASTE MANAGEMENT
WASTES
WATER
020800* - Petroleum- Waste Management
520200 - Environment
Aquatic- Chemicals Monitoring & Transport- (-1989)