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Quality Testing of Drinking Water

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Nearly all water in the world contains contaminants, even in the absence of nearby pollution-causing activities Many dissolved minerals, carbon compounds, and microbes find their way into drinking water as it comes in contact with air and soil When pollutant and contaminant levels in drinking water are high, they may affect household routines and be detrimental to human health The only way to ensure that your water supply is safe is to have a periodic laboratory water quality analysis done on your drinking water. Hach India is the leading provider of high end water quality analysis equipment in india – PowerPoint PPT presentation

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Title: Quality Testing of Drinking Water


1
Quality Testing of Drinking Water
2
Why Test Your Water?
  • Nearly all water in the world contains
    contaminants
  • Many dissolved minerals, carbon compounds, and
    microbes find their way into drinking water
  • Pollutants in drinking water may affect household
    routines and human health
  • The only way to ensure safety of your water
    supply is to have a periodic laboratory water
    analysis done

3
Water Testing Parameters
  • Color
  • Color in water may be due to the inorganic ions,
    such as iron and manganese, humus and peat
    materials, plankton, weeds and industrial wastes.
  • Odor
  • Odor is recognized as a quality factor affecting
    acceptability of drinking water. Most organic and
    some inorganic chemicals contribute odor.
  • Turbidity
  • The Turbidity in water is the reduction of
    transparency due to the presence of particulate
    matter such as clay or silt, finely divided
    organic matter, plankton or other microscopic
    organisms.

4
Water Testing Parameters
  • Manganese
  • The intake of manganese can be high as 20 mg/day
    without apparent ill effects. It should be noted
    that manganese may be objectionable to consumers
    if it is deposited in water mains and causes
    water discoloration
  • Iron
  • Anaerobic ground waters may contain iron up to
    several milligrams per liter without causing
    discoloration or turbidity in the water.
  • Calcium
  • Calcium is a major constituent of various types
    of rock. It is one of the most common
    constituents present in natural waters ranging
    from zero to several hundred milligrams per
    liter.

5
Water Testing Parameters
  • pH value
  • pH value is the logarithm of reciprocal of
    hydrogen ion activity in moles per liter. In
    water solution, variations in pH value are mainly
    due to hydrolysis of salts of strong bases and
    weak acids.
  • Alkalinity
  • Alkalinity of water is its quantitative capacity
    to react with a strong acid to a designated pH.
    Excess alkalinity in water is harmful for
    irrigation which leads to soil damage and reduce
    crop yields.
  • Conductivity
  • Specific conductance yields a measure of waters
    capacity to convey an electric current.

6
Important Water Analysis Equipment
  • Total Organic Carbon Analyzer (TOC)
  • A total organic carbon analyzer determines the
    amount of carbon in a water sample. There are two
    types of analyzers. One uses combustion and the
    other chemical oxidation.
  • pH Analyzer
  • Water pH testers and analyzers help analyze pH
    levels and detect faults in systems with
    electronic pH meters.

7
Important Water Analysis Equipment
  • Water Desalination Equipment
  • The parameters measured in Desalination
    instruments include Alkalinity, (COD),
    Conductivity, Dissolved Oxygen, Water Hardness,
    Iron, Manganese, Turbidity in water etc.

8
Important Water Analysis Equipment
  • ORP Meters
  • ORP meters measure the very small voltages
    generated when the measuring probe is placed in
    water in the presence of an oxidizing agent.

9
Thank You
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