Modelling of Nitrification at the Mogden Treatment Works

1989 ◽  
Vol 21 (4-5) ◽  
pp. 305-314
Author(s):  
J. P. Lumbers ◽  
S. C. Cook ◽  
G. A. Thomas
Keyword(s):  
Sensitivity Analysis ◽  
Monte Carlo Simulation ◽  
River Basin Management ◽  
Independent Data ◽  
Activated Sludge Process ◽  
Basin Management ◽  
Alternative Control ◽  
Control Actions ◽  
Parameter Values ◽  
Generalised Sensitivity Analysis

An application of a dynamic model of the activated sludge process is described within the context of real-time river basin management. The model has been calibrated and validated on independent data and then applied to investigate losses of nitrification at the Mogden Works. Monte Carlo simulation and generalised sensitivity analysis were found to be effective ways of identifying appropriate parameter values and their importance. The prediction of unmeasured states such as the autotroph population enabled the effects of alternative control actions to be better understood and the most suitable measures found.

Application of uncertainty and sensitivity analysis in river basin management

2006 ◽  
Vol 53 (1) ◽  
pp. 41-49 ◽  
Author(s):  
Y. Xu ◽  
A.E. Mynett
Keyword(s):  
Decision Making ◽  
Sensitivity Analysis ◽  
River Basin ◽  
Damage Model ◽  
River Basin Management ◽  
Flood Damage ◽  
Influential Factors ◽  
Basin Management ◽  
Wrong Decision ◽  
Morris Method

Considering uncertainty in the decision-making process in river basin management is important because uncertainty is regarded as one of the main obstacles to sound decision-making. In case of high uncertainty, the risks of making a wrong decision could be quite high, which may have severe consequences. This paper applies a screening sensitivity analysis method, the Morris method, to investigate the propagation of uncertainty from factors in a flood damage model into the model outputs and explores the importance of factors based on the sensitivity analysis. Uncertainty reduction in the most influential factors identified by the Morris method is proposed as a means to reduce the uncertainty in model outputs. In this way the risks of making a wrong decision could be reduced. The results in this paper show that the Morris method is an efficient approach to help reduce the uncertainty in model outputs.

INTEGRATED ASSESSMENT OF WASTEWATER TREATMENT PLANTS FOR SUSTAINABLE RIVER BASIN MANAGEMENT

2010 ◽  
Vol 9 (9) ◽  
pp. 1251-1258 ◽  
Author(s):  
George Barjoveanu ◽  
Claudia Cojocariu ◽  
Brindusa Robu ◽  
Carmen Teodosiu
Keyword(s):  
Wastewater Treatment ◽  
River Basin ◽  
Integrated Assessment ◽  
Wastewater Treatment Plants ◽  
River Basin Management ◽  
Basin Management

River Basin Management in England and Wales

1987 ◽  
Vol 19 (9) ◽  
pp. 211-216
Author(s):  
B. R. Thorpe
Keyword(s):  
River Basin ◽  
River Basin Management ◽  
Basin Management ◽  
England And Wales

River Basin Water Quality Management in Japan – An Overview

1991 ◽  
Vol 23 (1-3) ◽  
pp. 29-39 ◽  
Author(s):  
Ken Murakami
Keyword(s):  
Water Pollution ◽  
River Basin ◽  
Legal System ◽  
Water Quality Management ◽  
River Basin Management ◽  
Basin Management ◽  
Large Cities ◽  
Basin Water ◽  
Rapid Industrialization ◽  
Control Water

Due to rapid industrialization and the concentration of the population shifting towards large cities starting from the 1950s, Japan experienced severe water pollution problems throughout the country. In order to cope with these problems, the legal system has been refined and various measures to control water pollution have been taken. This paper summarizes the current institutional structure, legal system, as well as plans and programs, for water pollution control and river basin management in Japan.

Aspects of Monitoring in River Basin Management

1984 ◽  
Vol 16 (5-7) ◽  
pp. 259-274 ◽  
Author(s):  
Edwin E Herricks
Keyword(s):  
River Basin ◽  
River Basin Management ◽  
Basin Management

Sprat – A Simple River Quality Impact Model for Intermittent Discharges

1989 ◽  
Vol 21 (12) ◽  
pp. 1793-1796
Author(s):  
C. P. Crockett ◽  
R. W. Crabtree ◽  
H. R. Markland
Keyword(s):  
Plug Flow ◽  
River System ◽  
Response Assessment ◽  
River Basin Management ◽  
Impact Model ◽  
Basin Management ◽  
Potential Accuracy ◽  
North West ◽  
River Quality ◽  
Receiving Waters

The detrimental influence of storm sewer overflows on urban river quality has been widely recognised for many years. One objective of the WRc River Basin Management programme is the development of a river impact model capable of predicting the transient quality changes in receiving waters due to intermittent storm sewage discharges. The production of SPRAT (Spill Pollution Response Assessment Technique) is the first step in the development of such a model. SPRAT incorporates a number of significant simplifications, most notably plug flow and instantaneous mixing, and does not implicitly take into account the effects of dispersion. These simplifications reflect the large errors associated with the model inputs. These errors severely limit the potential accuracy of any river impact model. The model has been applied to the Bolton river system in North West England. The development and application of SPRAT has enabled the requirements for a more sophisticated river quality impact model to be clearly defined, in addition to highlighting the problems associated with gathering suitable data with which to build and calibrate such a model.

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