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CRC PUBLICATIONS |
From Roads to Rivers: Gross Pollutant Removal From Urban Waterways
Robin Allison,
Tracey Walker,
Francis Chiew,
Ian O' Neill,
Tom McMahon
Publication Type:
Technical Report
This is a publication of the initial CRC for Catchment Hydrology
CRC Program:
Urban Hydrology (Previous CRC)
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Publication Keywords:
Pollutants
Litter
Trap
Storm Sewage
Loading
Land Use
Stormwater Management
Urban Areas
Cost Effectiveness
Catchment Areas
Water Pollution Control
Structures
Nutrients
Water Quality Monitoring
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Abstract / Summary:
Abstract
There is increasing public concern about the large amount of gross pollutants, such as litter and debris, observed in urban waterways and receiving waters. These pollutants are unattractive, disturb the physical habitat, degrade the waters, are linked to marine animal deaths and reduce amenity values.
A number of approaches are used to reduce the problem: public awareness and education programs, penalties for littering, the provision of collection bins and extensive street cleaning. Despite these efforts it is clear that significant amounts of material continue to enter the urban drainage system. Traps can be installed to collect gross pollutants and can be located at street channel entry pits, within main drains and in slow moving receiving waters. However, it is rarely feasible to provide sufficient trapping to collect all the pollutants in the urban drainage system, but a proportion can be trapped economically.
This report describes a field monitoring program used to measure gross pollutant loads and flows associated with rainfall events and to assess the performance of two gross pollutant trapping systems. The results suggest that, although large amounts of gross pollutants are transported from urban catchments to receiving waters via the stormwater system, technologies are available to capture these pollutants from within the drainage network. However, trapping gross pollutants from within urban waterways can be expensive. With the large areas associated with urban centres in Australia, it is unlikely that gross pollutant traps will be located on all urban catchments. Waterway managers must therefore decide what are the appropriate trapping techniques and where best to locate traps within a particular drainage network.
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Centre Office:
CRC for Catchment Hydrology
Dept of Civil Engineering
Building 60
Monash University Vic 3800
Tel: +61 3 9905 2704
Fax: +61 3 9905 5033
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