A Study on Spatial Distribution of Water Quality and the Behavior of Do Concentration in Tidal Area of Urban Rivers
Publication: World Environmental and Water Resources Congress 2009: Great Rivers
Abstract
The aims of these observations are to clarify the urban river water quality in tidal area. This paper explains the spatial distribution of water quality in the tidal area during normal water discharge and the time series of the dissolved oxygen content before and after the flood. This is the basic research to improve water quality. From the results of the observation, following results are obtained; 1) BOD concentration meets the environmental criteria in Japan. 2) T-N and T-P concentrations rise at the observation points below the discharge points from the water reclamation centers. 3) In the observation during rainfall, the dissolved oxygen saturation decreases from 20% to below 5% at observation point in two hours, and the value recovered after 6 days to recover up. Moreover other observation, dissolved oxygen rises to around 100% in all layers.
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Copyright
© 2009 American Society of Civil Engineers.
History
Published online: Apr 26, 2012
ASCE Technical Topics:
- Coastal engineering
- Coastal processes
- Coasts, oceans, ports, and waterways engineering
- Dissolved oxygen
- Distribution functions
- Engineering fundamentals
- Environmental engineering
- Hydrologic engineering
- Infrastructure
- Mathematical functions
- Mathematics
- Municipal water
- River engineering
- Rivers and streams
- Spatial distribution
- Tides
- Urban and regional development
- Urban areas
- Water (by type)
- Water and water resources
- Water discharge
- Water management
- Water quality
- Water treatment
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