Showing results for: water analysis system Articles
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Clustering analysis of water distribution systems: identifying critical components and community impacts
Large water distribution systems (WDSs) are networks with both topological and behavioural complexity. Thereby, it is usually difficult to identify the key features of the properties of the system, and subsequently all the critical components within the system for a given purpose of design or control. One way is, however, to more explicitly visualize the network structure and interactions ...
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The influence of the existing network layout on water distribution system redesign analysis
The methodologies usually adopted in water distribution system redesign problems consider the topology of the network as an input fixed datum; optimisation solely allowing for the duplication/substitution of existing components. In order to contribute to the identification of optimal solutions that may lead to a lower risk of failure to supply the required water, together with a lower redesign ...
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A two steps solution approach to solving large nonlinear models: application to a problem of conjunctive use
This article describes a solution method of solving large nonlinear problems in two steps. The two steps solution approach takes advantage of handling smaller and simpler models and having better starting points to improve solution efficiency. The set of nonlinear constraints (named as complicating constraints) which makes the solution of the model rather complex and time consuming is eliminated ...
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How Meco Smartanalytics Supports Critical Manufacturing
Big Data is playing a transformative role in most modern industries, proving to have a significant impact in the water purification sector. While the biopharmaceutical industry is continuing to ramp up production in 2021, especially for the manufacture of Covid-19 related products like vaccines, vials, syringes, and personal protective equipment (PPE), high purity water systems are increasingly ...
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Novelty detection for time series data analysis in water distribution systems using support vector machines
The sampling frequency and quantity of time series data collected from water distribution systems has been increasing in recent years, giving rise to the potential for improving system knowledge if suitable automated techniques can be applied, in particular, machine learning. Novelty (or anomaly) detection refers to the automatic identification of novel or abnormal patterns embedded in large ...
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Assessing the complex adaptability of regional water security systems based on a unified co-evolutionary model
A unified co-evolutionary model was developed to study the adaptability conditions of regional water security systems, which is important for the coordinated development of these systems. In this work, the main factors that affect the adaptability of regional water security systems, the contribution of each sub-problem domain to the development of the problem domain, and the fitness values of ...
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Investigation and analysis of college's water system: the case of Northeastern University
To date there have been many studies of water system optimization which were focused on the water use performance of industrial, regional, and urban areas from a macro-perspective. However, water system optimization colleges and universities are rare, though the amount of water consumption is huge in higher education institutions. We applied a water extended input–output model to investigate ...
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Bayesian modelling for water loss management decisions
Bayesian networks and their associated methods are especially suited for capturing and dealing with uncertainty. They can be successfully applied both in engineering sciences and in reliability analyses of water distribution systems. In this paper we propose an interactive Bayesian network and a decision-theoretic system which intend to monitor water loss, predict likely outcome and select ...
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Evaluation of chlorine decay models under transient conditions in a water distribution system
Residual chlorine concentration decreases along distribution networks because of factors such as water quality, physical properties of the pipeline, and hydraulic conditions. Hydraulic conditions are primarily governed by transient events generated by valve modulation or pumping action. We investigate the impact of transient events on the rate of chlorine decay under various flow conditions. ...
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Adaptable urban water demand prediction system
In this work, identification of 24-hours-ahead water demand prediction model based on historical water demand data is considered. As part of the identification procedure, the input variable selection algorithm based on partial mutual information is implemented. It is shown that meteorological data on a daily basis are not relevant for the water demand prediction in the sense of partial mutual ...
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A history of water distribution systems and their optimisation
Water distribution systems have a very long and rich history dating back to the third millennium B.C. Advances in water supply and distribution were followed in parallel by discoveries and inventions in other related fields. Therefore, it is the aim of this paper to review both the history of water distribution systems and those related fields in order to present a coherent summary of the ...
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Identification of metabolites produced by Phanerochaete chrysosporium in the presence of amlodipine orotate using metabolomics
Pharmaceuticals are very useful in treating human diseases but they are excreted to the environment sometimes in their original form or as byproducts of human metabolism. Pharmaceuticals and their metabolites have been proven by studies to be harmful to non-target ecological species and may be persistent in different water matrices. In this regard, there is an emergent need to eliminate these ...
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Water resources planning and management for Chennai City using decision support system
Managing the water resources thoughtfully and profitably is the most crucial responsibility. This paper aims to study and analyse the water supply system at city level with the help of simulation technique and Decision Support System (DSS). In this study, the capital of Tamil Nadu (India), Chennai City is considered. The study analyses the existing level of water supply and it tries to fill the ...
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Identification of metabolites produced by Phanerochaete chrysosporium in the presence of amlodipine orotate using metabolomics
Pharmaceuticals are very useful in treating human diseases but they are excreted to the environment sometimes in their original form or as byproducts of human metabolism. Pharmaceuticals and their metabolites have been proven by studies to be harmful to non-target ecological species and may be persistent in different water matrices. In this regard, there is an emergent need to eliminate these ...
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Water masses surface temperatures assessment and their effect on surrounding environment
The aim of this study was to evaluate the effect of water masses on the surface temperature with direct impact on the surrounding area. Three systems were used for the study: a fully vegetated system (subsurface flow constructed wetland (CW)), a lake with no vegetation and a lake partially vegetated with Lemna minor. Infrared thermography was applied for the different systems analysis, ...
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Why is Calibration of Water Quality Testing Equipment so Important?
The calibration of water quality testing equipment is as important as the tuning of a musical instrument. When people find out I’m a chemist, the first thing they ask me is, “Are you Walter White?” (This shows you the kind of people I typically run into). The second thing they ask me is, “Why is calibration so important?” Simply stated, calibration is how we adjust ...
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Diagnosis of the ageing of water pipe systems by water quality and structure of iron corrosion in supplied water
To develop a method for screening ageing of water supply systems by analysing the supplied water's quality, water samples were collected from a water treatment plant, a delivery pump station, two distribution reservoirs and two feed pipes along a water pipe system. Principal component analysis of the water was conducted. In the first principal component, many elements exhibited high ...
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Tecta Success Story - SAWACO, Saudi Arabia - Case Study
SAWACO is the first private water utility provider in Saudi Arabia with over 50,000 m3/day of production capacity serving Jeddah and neighboring areas. SAWACO is conforming to international standards such as the World Health Organization (WHO), Saudi Standards (SASO), and the General Authority of Meteorology and Environmental ...
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Rapid, specific and quantitative polymerase chain reaction (PCR) detection of pathogenic protozoa
Entamoeba histolytica for drinking water supplyIn this study, a quantitative species-specific polymerase chain reaction (PCR) method to rapidly detect E. histolytica in water is developed. First, the specificity of E. histolytica PCR detection was verified by using species-specific primers of 16S-like rRNA genes to clearly differentiate it from the closely related amoebae species E. dispar and E. moshkovskii. The sensitivity of this method ...
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We Need to Talk About Peaking Factors
In the design of water networks ‘peaking factors’ are used for simulating design flows in hydraulic models. In simple terms, the dimensionless peaking factor is maximum over average consumption. Historically, utilities adopted standardized peaking factors based on their source data (treatment plant etc.) which was the most reliable source of data. But as we enter the world of big ...
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