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Related Concept Videos

Quality of Water01:19

Quality of Water

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In concrete preparation, the quality of water is paramount as it affects the strength and durability of the concrete. Potable water is usually preferred; however, it must not have excessive sodium or potassium to prevent compromising the concrete's integrity. Water quality is typically evaluated based on impurities such as dissolved solids, chlorides, and sulfates, and its pH value is ideally between 6 and 8. Even slightly acidic natural water may be acceptable unless it contains harmful...
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When the quality of water for concrete preparation is uncertain, its impact on the setting time of cement and compressive strength of mortar is assessed by comparison with de-ionized or distilled water benchmarks. American Society for Testing and Materials (ASTM) C1602 requires the setting times to be within 90 minutes of the control, British Standard (BS) 3146:1980 allows a 30-minute variance in the initial setting, while British Standards European Norm (BS EN) 1008 specifies initial setting...
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Water exists in any one of the three classical states: solid (ice), liquid (water), and gas (steam or water vapor). The state of water depends on i) the intermolecular forces that draw molecules together and ii) the kinetic energy that leads to movements that pull them apart.
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Vegetated Treatment Systems for Removing Contaminants Associated with Surface Water Toxicity in Agriculture and Urban Runoff
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Evaluating urban surface water quality in Luton.

Tahmina Ajmal1, Tochukwu Kene Anyachebelu2, Marc Conrad2

  • 1Department of Computer Science and Technology, University of Bedfordshire, Luton, LU1 3JU, UK. tahmina.ajmal@beds.ac.uk.

Environmental Monitoring and Assessment
|February 10, 2019
PubMed
Summary
This summary is machine-generated.

A new Water Quality Index (WQI) formula was developed for the River Lea, demonstrating that just three parameters effectively indicate overall water quality. This simplifies water monitoring efforts.

Keywords:
Environmental assessmentRiver LeaSurface waterWater quality index

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Area of Science:

  • Environmental Science
  • Water Resource Management
  • Analytical Chemistry

Background:

  • Water Quality Index (WQI) is a crucial tool for assessing water body health.
  • Existing WQI methods vary, necessitating tailored indices for specific water bodies.
  • The River Lea requires a specific WQI for effective quality assessment.

Purpose of the Study:

  • To develop a simplified WQI formula for the River Lea.
  • To identify the minimum number of parameters for accurate water quality assessment.
  • To establish an efficient monitoring strategy for the River Lea.

Main Methods:

  • Selection of four monitoring sites along the River Lea.
  • Analysis of water samples to determine key quality parameters.
  • Development and validation of a novel WQI formula.

Main Results:

  • A WQI formula specifically designed for the River Lea was derived.
  • Water quality assessment was achievable with a minimal set of parameters.
  • The study indicates that only three parameters are sufficient for effective WQI calculation.

Conclusions:

  • A simplified WQI approach is feasible for the River Lea.
  • Reduced parameter monitoring offers an efficient water quality assessment method.
  • The developed WQI provides a reliable indicator of River Lea's water quality.