Emissions of volatile and potentially toxic organic compounds from waste-water treatment plants and collection systems (Phase 2). Volume 4. Modeling volatile organic compound emissions during preliminary and primary treatment. Final report
The purpose of this phase of the study was to develop models of VOC emissions that can be used to determine the importance of individual stages in the preliminary and primary operations sequence. Included in the study was selection of candidate operations for design or operational modification to minimize emission rates. Overall emissions predicted during preliminary and primary treatment were approximately 25% of influent VOC load and varied from 0.02 to 0.03 g-VOCs/cu m of wastewater treated, depending on the method of plant operation selected. Major losses occurred in aerated grit chambers and at the weirs. Losses from non-aerated tanks and conveyance channels were negligible relative to other units. Emissions predicted for headworks steps were small, but not negligible. Options to covering treatment units and collection of off-gases are clearly available in many cases. Submerged weirs, launder depth controls, and elimination of aeration are examples of modifications that can be used to effectively decrease VOC emissions.
- Research Organization:
- California Univ., Davis, CA (United States). Dept. of Civil Engineering
- OSTI ID:
- 5626362
- Report Number(s):
- PB-92-141720/XAB; CNN: ARB-A732-085
- Resource Relation:
- Other Information: See also Volume 3, PB92-141712. Sponsored by California State Air Resources Board, Sacramento. Research Div
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC COMPOUNDS
ECOLOGICAL CONCENTRATION
WASTE WATER
WASTE PROCESSING
AERATION
AIR POLLUTION
AIR POLLUTION ABATEMENT
AIR POLLUTION CONTROL
MASS TRANSFER
MATHEMATICAL MODELS
MUNICIPAL WASTES
OFF-GAS SYSTEMS
POLLUTION SOURCES
VOLATILE MATTER
WATER TREATMENT PLANTS
CONTROL
HYDROGEN COMPOUNDS
LIQUID WASTES
MANAGEMENT
MATTER
OXYGEN COMPOUNDS
POLLUTION
POLLUTION ABATEMENT
POLLUTION CONTROL
PROCESSING
WASTE MANAGEMENT
WASTES
WATER
540120* - Environment
Atmospheric- Chemicals Monitoring & Transport- (1990-)
540320 - Environment
Aquatic- Chemicals Monitoring & Transport- (1990-)