Construction Site Stormwater Treatment System Performance: Comparison of Coagulation Efficiency
Publication: World Environmental and Water Resources Congress 2008: Ahupua'A
Abstract
Chemical coagulation-flocculation systems are increasingly being used in construction stormwater treatment systems for the clarification of turbid runoff. Numerous coagulants and flocculants are available, but their application to stormwater is relatively recent, and there is little data available allowing a quantitative performance evaluation and comparison. This study presents a laboratory evaluation and comparison of common coagulants used for stormwater treatment. Jar tests were conducted using four different chemical coagulants, with synthetic 1000-NTU stormwater made up from soil samples from construction sites. Results demonstrate that coagulant performance varies considerably for a given soil, with optimum doses ranging from a few mg/L to over 100 mg/L, and that different coagulants have characteristic dose/response curves.
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Copyright
© 2008 American Society of Civil Engineers.
History
Published online: Apr 26, 2012
ASCE Technical Topics:
- Chemical processes
- Chemical treatment
- Chemistry
- Coagulation
- Comparative studies
- Construction engineering
- Construction management
- Construction sites
- Cooling (wastewater treatment)
- Engineering fundamentals
- Environmental engineering
- Hydrologic engineering
- Hydrology
- Laboratory tests
- Methodology (by type)
- Research methods (by type)
- River engineering
- Runoff
- Sediment
- Stormwater management
- Tests (by type)
- Turbidity
- Waste management
- Waste treatment
- Water and water resources
- Water treatment
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