Water quality decay modelling in hydraulic pressure systems

A mathematical model able to evaluate water quality variations in complex hydraulic pressure systems has been developed. The model consists of a set of mass balance equations for tanks, pipes and nodes. It has been applied to predict chlorine concentration inside a case-study water network described in literature by using different expressions of chlorine decay coefficients, obtained in laboratory tests and expressed as a function of the residence time of water in pipes, the initial chlorine concentration, the history and temperature of water. The results showed little variations of the chlorine concentrations and the need to calibrate the parameters of chlorine decay coefficients expressions on full scale hydraulic systems.

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Potential impacts of slum urbanisation on channel bank storage in the Bang Pakong River, Thailand

Water Practice & Technology ◽

10.2166/wpt.2012.071 ◽

2012 ◽

Vol 7 (4) ◽

Cited By ~ 1

Author(s):

K. Harriden

Keyword(s):

Water Quality ◽

Balance Equations ◽

Physical Processes ◽

Social Phenomena ◽

Urban Settlements ◽

Recharge Rates ◽

Water Quality Deterioration ◽

Informal Urban Settlements ◽

Storage Processes

Generally regarded as social phenomena, this paper regards slum urbanisation as an environmental actor. Specifically, how slum developments modify hydrogeomorphological processes motivates this research. Using the Bang Pakong River, eastern Thailand, as a case study, a literature review was conducted. The literature reviewed indicated changes in physical processes such as channel bank stability, water quality, flow regimes and the hydrological balance equations can occur with slum development. Given the importance of channel banks as the physical basis of many slum sites, this paper focuses on the possible changes to channel bank storage in the Bang Pakong River following slum urbanisation. The research highlights possible changes to channel bank storage processes, notably decreased storage recharge rates; increased anthropogenic extraction; and probable water quality deterioration. Deeper scientific understanding of how river processes are affected by specific forms of urban development can contribute to better management of both informal urban settlements and rivers.

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Application weight mathematical model (WQI) to assess water quality for irrigation: A case study of Tigris river in Nineveh governorate

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/735/1/012061 ◽

2021 ◽

Vol 735 (1) ◽

pp. 012061

Author(s):

Abdulaziz Y. T. Al-Saffawi ◽

Reem A.A. Al-Shanoona ◽

Omar M. S. Alobidy

Keyword(s):

Mathematical Model ◽

Water Quality ◽

Tigris River

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Localization method for water quality monitoring points using chlorine concentration measurements in real water network

10.5004/dwt.2020.25716 ◽

2020 ◽

Vol 199 ◽

pp. 227-233

Author(s):

Ewa Hołota ◽

Beata Kowalska ◽

Dariusz Kowalski

Keyword(s):

Water Quality ◽

Water Quality Monitoring ◽

Chlorine Concentration ◽

Quality Monitoring ◽

Water Network ◽

Localization Method ◽

Concentration Measurements

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An Approach to the Quality of Drinking Water as a Matter of Multicriterial Decision

International Journal of Geology ◽

10.46300/9105.2021.15.2 ◽

2021 ◽

Vol 15 ◽

pp. 17-24

Author(s):

Amelia Bucur ◽

Jose L. Lopez-Bonilla

Keyword(s):

Mathematical Model ◽

Water Quality ◽

Drinking Water ◽

Statistical Analysis ◽

Quality Management ◽

Mathematical Programming ◽

Simulation Process ◽

Percentage Points

The aim of the present paper is to approach the matter of water quality by resorting to the metod of multicriterial mathematical programming. MicrosoftExcel enables the simulation of a mathematical model. Furthermore, we have also created a file in the C++ software, in view of the simulation process, applicable to numberless properties of water quality. The case study presents the simulation of a multicriterial analysis of water quality in Sibiu county. This particular study shows the means of obtaining more information about water quality, subsequent to the analysis of its characteristics resorting to statistical analysis-specific software, e.g. SPSS 16 software. Given the increase of drinking water worldwide by tens of percentage points in cca two decades, the author(s) consider(s) that an approach to the quality management of drinking water should represent a key priority of society.

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