Answer:

Treating effluents and hot water before releasing them in ponds and rivers. By recycling and reusing water in two or more stages, water usage can be minimised. To meet water requirements, it is important to carry out rainwater harvesting.

Verified answer

Answer:

Discuss the steps to be taken to minimise environmental degradation by industry. Treating effluents and hot water before releasing them in ponds and rivers. By recycling and reusing water in two or more stages, water usage can be minimised. To meet water requirements, it is important to carry out rainwater harvesting.

Explanation:

Discuss the steps to be taken to minimise environmental degradation by industry.

Every litre of waste water discharged by our industry pollutes eight times the quantity of freshwater

• Treating effluents and hot water before releasing them in ponds and rivers.

• By recycling and reusing water in two or more stages, water usage can be minimised.

• To meet water requirements, it is important to carry out rainwater harvesting.

• Mechanical means are the primary treatment. This involves sedimentation, flocculation, grinding, screening.

• Biological process is the secondary treatment.

• Physical, chemical and biological is the Tertiary treatment. Recycling wastewater is also involved.

• There needs to be legal regulation of groundwater resources, wherever there is threat of overdrawing groundwater resources by the industry.

• Using inertial separators, scrubbers, fabric filters, factories with electrostatic precipitators can be fitted with smoke stacks to reduce particulate matter in the air.

• In factories, smoke can be reduced by using gas or oil instead of coal.

• Generators should be fitted with silencers.

• To reduce noise and increase energy efficiency, machineries must be redesigned.

• Apart from making use of earplugs, noise absorbing materials may be used.

• There needs to be integration of environmental concerns and economic development to address the challenges of sustainable development