Control of Environmental Degradation

  • Every litre of wastewater discharged by our industry pollutes eight times the quantity of freshwater.
  • Some ways of reducing industrial pollution of freshwater can be:
    • By minimising the use of water for processing by reusing and recycling it in two or more successive stages.
    • By using rainwater to meet the water requirement for harvest .
    • By treating hot water and effluents (liquid waste) from industries before releasing them into rivers and ponds.
    • This can be done in three phases:
      • Primary treatment - mechanical means - involves screening, grinding, flocculation and sedimentation.
      • Secondary treatment - biological process .
      • Tertiary treatment - biological, chemical and physical process - involves recycling wastewater.
    • By legally regulating the overdrawing of groundwater reserves by industries where there is a threat to groundwater resources.
    • By fitting smokestacks to factories with electrostatic precipitators, fabric filters, scrubbers and inertial separators to reduce particulate matter in the air.
    • By using oil and gas instead of coal to reduce smoke from factories.
    • By redesigning machinery and equipment and using silencers in generators to increase energy efficiency and reduce noise .
    • By using noise-absorbing materials apart from personal use of earplugs and earphones.
    • The challenge of sustainable development requires the integration of economic development with environmental concerns .

Example of NTPC:

  • NTPC (National Thermal Power Corporation Limited) is a major power-providing corporation in India.
  • It has ISO certification for Environmental Management System (EMS).
  • The company has taken a proactive approach to preserve the natural environment and resources like water, oil and gas and fuels.
  • This has been made possible:
    • By utilising equipment , adopting the latest technology and upgrading existing equipment.
    • By minimising waste generation by maximising ash utilisation.
    • By providing green belts for nurturing ecological balance and using special-purpose vehicles for afforestation.
    • By reducing environmental pollution through ash pond management, ash water recycling system and liquid waste management.
    • By ecological monitoring , reviews and online database management for all its power stations.

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Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 13 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.