How can the industrial pollution of fresh water be reduced ? Explain various ways.

Although industries contribute significantly to India’s economic growth and development, the increase in pollution of land, water, air, noise and resulting degradation of environment that they have caused, cannot be overlooked.

How can the industrial pollution of fresh water be reduced? Some suggestions are-

• minimising use water for processing by reusing and recycling it in two or more successive stages
• harvesting of rainwater to meet water requirements
• treating hot water and effluents before releasing them in rivers and ponds.
  • Treatment of industrial effluents can be done in three phases
    • Primary treatment by mechanical means. This involves screening, grinding, flocculation and sedimentation.
    • Secondary treatment by biological process
    • Tertiary treatment by biological, chemical and physical processes. This involves recycling of wastewater.

• Overdrawing of ground water reserves by industry where there is a threat to ground water resources also needs to be regulated legally.