Question

How do industries pollute water suggest any 4 measures to control water pollution

Answer 1

1.Proper sewage treatment and management

2.Keep out oils,fat or grease from the sink

3.Ensure minimum use of bleach or detergents

4.Avoid direct dumping into water systems

Answer 2

Answer:

Industries pollute water by dumping organic and inorganic wastes and effluent into the water bodies without treating them. Four measures to control water pollution:

1. Use of water should be minimised in processing by reusing and recycling the products in successive stages.

2. Rainwater harvesting should be practiced by industries.

3. Hot water and effluents must be treated before release into ponds and rivers. It should be done in three phases: primary. secondary and tertiary.

4. Drawing of groundwater reserves must be regulated legally as overdrawing is harmful to the environment.