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Title: Aspects of water quality management in an urban river : the Upper River Tame
Author: Boitsidis, Periklis.
ISNI:       0000 0001 3469 036X
Awarding Body: University of Birmingham
Current Institution: University of Birmingham
Date of Award: 2002
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This research addresses the mechanistic behaviour of urban catchments, particularly under the effects of rainfall, using the case study of the River Tame in West Midlands. The catchment response in wet weather is dominated by combined sewer overflow (CSO) discharges into the river, causing water quality deterioration. Severe dissolved oxygen depletions often occur resulting in exceedence of fundamental intermittent standards; high ammonia values are also induced but un-ionised ammonia is constrained by the prevailing neutral pH. The five most dominant responses of ammonia to rainfall are identified based on antecedent dry period, the magnitude and timing of ammonia peaks, the initial rainfall intensity gradient and the patterns of rainfall intensity. Field studies support data analysis of the historic database and establish a temporal picture of BOD during storms. Simulation of river flow and water quality in low flow and storm conditions is achieved by employing MIKE 11, a deterministic mathematical model, with variable fidelity due to temporal and spatial variability of inputs. The model is tested as part of a decision support system for river water quality management. Simulations of various management schemes indicate that real time CSO control and on-line storage cannot guarantee water quality improvements and that on-line storage can be useful in combating excessively high pollutant concentrations.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available