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Related Concept Videos

Multiple Pipe Systems01:21

Multiple Pipe Systems

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Multipipe systems consist of complex configurations of interconnected pipes designed to transport fluids efficiently across intricate networks. They are essential in engineering applications requiring precise control over flow distribution, pressure, and head loss. They are categorized into series, parallel, loop, and network configurations, each distinguished by unique flow characteristics and applications.
Series Configuration
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Regulation of Water Output01:26

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The human body predominantly expels water through the urinary system. On average, an individual generates around 1.5 liters of urine each day. This amount can fluctuate based on how well a person is hydrated, but a critical minimum quantity of urine must be produced to ensure the body's proper functioning. Daily, the kidneys remove 600 to 1200 milliosmoles of dissolved substances, effectively excreting excess minerals and water-soluble toxins such as creatinine, urea, and uric acid from the...
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Design Example: Designing a Residential Plumbing System01:25

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The design of residential plumbing systems requires carefully evaluating water demand, flow rates, and pressure dynamics to ensure both efficiency and reliability. The nature of water flow within pipes is defined by its Reynolds number, which classifies flow as either laminar (smooth) or turbulent.
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Flood risk assessment involves careful planning and analysis to ensure the safety of communities near water retention structures. Capacity contours are a vital tool in this process, as they illustrate the potential spread of water at specific levels in a given area. In the context of building a bund across a small valley, these contours play a critical role in evaluating the safety of nearby residential areas.In this example, the bund is intended to store stormwater in the valley. The engineers...
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Design Example: Design of an Irrigation Channel01:27

Design Example: Design of an Irrigation Channel

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Trapezoidal channels are widely used in irrigation systems due to their cost-effectiveness and efficiency in conveying water. Trapezoidal channels feature a flat bottom and sloping sides, making them stable and easier to construct compared to other shapes. The bottom width and side slope ratio are determined based on the required flow capacity and site conditions. The side slope is kept gentle for unlined channels to prevent soil erosion.Hydraulic parameters in channel design include the flow...
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Single Pipe Systems01:24

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In pipe flow analysis, problems are typically categorized into three types — Type I, Type II, and Type III — based on the known parameters and the desired outcome. Each type of problem addresses specific engineering requirements using fluid properties, pipe characteristics, and operational conditions.
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Spatial Multiobjective Optimization of Agricultural Conservation Practices using a SWAT Model and an Evolutionary Algorithm
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Flexible decision-making framework for developing operation protocol for water distribution systems.

Gopinathan R Abhijith1, Avi Ostfeld1

  • 1Civil and Environmental Engineering, Technion - Israel Institute of Technology, Haifa, 32000, Israel.

Journal of Environmental Management
|September 3, 2022
PubMed
Summary

This study introduces a flexible framework for water distribution system (WDS) management, integrating advanced modeling with multi-criteria decision-making to optimize water quality beyond just residual chlorine. The findings highlight the importance of controlling disinfection by-products and taste/odor issues for reliable WDS operation.

Keywords:
AHPChlorineMulti-criteria decision-makingPFASsWater distributionWater quality

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Area of Science:

  • Environmental Engineering
  • Water Resource Management
  • Systems Analysis

Background:

  • Traditional water distribution system (WDS) management relies on residual chlorine, neglecting emerging water quality concerns.
  • Mechanistic modeling has advanced WDS water quality analysis, but lacks integration with broader quality parameters.
  • Current WDS protocols may not adequately address complex water quality challenges.

Purpose of the Study:

  • To develop a flexible decision-making framework for WDS management.
  • To integrate mechanistic water quality modeling (EPANET-C) with multi-criteria decision-making (AHP).
  • To rank operating alternatives based on multiple water quality parameters, including organic matter and residual chlorine.

Main Methods:

  • Developed a framework integrating EPANET-C and Analytic Hierarchy Process (AHP).
  • Incorporated uncertainty analysis using the Monte Carlo method for mechanistic modeling.
  • Applied six diverse cases to reflect expert judgment and tested on two networks.

Main Results:

  • The framework successfully ranked operating alternatives considering multiple water quality criteria.
  • Disinfection by-product formation and taste/odor control were critical factors in WDS performance.
  • The study identified trade-offs between conflicting microbiological, chemical, and organoleptic quality criteria.

Conclusions:

  • A flexible operation protocol is practical for maintaining water quality benchmarks in WDS.
  • The proposed framework enhances WDS management by considering a wider range of water quality parameters.
  • The approach provides a robust method for optimizing WDS performance under various scenarios.