الفهرس 
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Abstract
The objective of this study is to propose a decision support
system for the water quality management of Bahr El Baqar
Drainage System. The implemented system is able to study the
technical feasibility analysis for improving the water quality in
the drainage system. It is able to control pollution of Bahr El
Baqar drainage system and improve water quality along the
system for safe reuse of drainage wastewater in irrigation. It also
supports the depollution of Lake Manzala and improves the
Mediterranean Sea environment. It is used a tool to help
decision makers for water quality management and resource
allocation in order to achieve designated water quality
objectives.
The study presented herein consists of seven chapters
described as follows:
Chapter one includes a definition of the problem that is
considered in the study, the study objectives, the study
methodology and an illustration of the study contents.
Chapter two discusses basic concepts and descriptions of
general principles applicable to water quality management and
decision support systems. It also includes a study of examples of
decision support systems that have been implemented for water
quality management of water bodies, with an emphasis on
drainage systems.
Chapter three explains the methods of analysis for the
proposed Decision Support System for Water Quality
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Management of Bahr El Baqar drainage system. The
significance of water quality modelling is discussed in this
chapter, which focuses on different types of water quality
models and their mathematical principles. Examples of water
quality models are presented, with an emphasis on the model
chosen for our research and its governing equations.
Chapter four provides a detailed overview of Bahr El Baqar
drainage system, which is the subject of the case study. It
describes the location of the drainage system, as well as its
physical characteristics, wastewater sources, and structures. An
overview of the new wastewater treatment plant at Bahr El
Baqar drainage system is presented.
Chapter five discusses the water quality of Bahr El Baqar
drainage system and evaluates its suitability for irrigation reuse.
This assessment is an important aspect of the water quality
management of the system. The existing water quality
monitoring system along the Bahr El Baqar drainage system is
described and graphing of the water quality data is presented.
Chapter six gives a description of the proposed Decision
Support System for Water Quality Management of the Bahr El
Baqar drainage system. The model system schematization is
demonstrated in this chapter and the modelling steps are
presented in detail. Scenarios for model management are added
and results are displayed and analyzed.
Chapter seven summarizes the conclusions that can be taken
from the study along with a list of recommendations.