Cost effective sensors for pollutant detection

Water Pollution in India

  • 70% of surface water in India is unfit for consumption (ADR 2016)
  • 40 mn. litres of waste water enters the rivers and water bodies daily (Down to Earth)

Impact of Water Pollution

  • $80 bn. cost due to environmental degradation
  • Estimated health cost is about $6.7-8.7 bn. per year
  • Loss of 40000 lives yearly in India due to the lack of water, sanitation and hygeine
  • 1.5 mn children die and 200 million days of work are lost each year as a result to water related diseases

Governemnt Actions

For effective interventions, the decision makers need

data that is:

  • Reliable
  • Representative
  • Highly frequent

However, this has been distant dream.

Why?

  • Traditional method of water sampling is:

    • Slow
    • Tedious
    • Expensive
    • Prone to human error
    • Lack of resources
    • Lack of infrastructure

Cost effective sensors are the answer

What are hyper-spectral sensors

  • Sensors with hundresds of narrow, contigous bands in the electro magnetic spectrum
  • facilitates diffrentiation between vast number of objects

Methodology

  • Collect the pure spectra’s of respective chemicals
  • Collect the pure spectra of water
  • Collect the mixel’s from the water body’s
  • Perform spectral mixture analyses on the sample using the pure spectra’s
  • Build a robust method for dileanation of chosen chemicals

Chemical