The diagram shows a typical wastewater treatment process.
What is the purpose of chlorination in the wastewater treatment process?
Important Questions on Wastewater Story
The diagram shows a typical wastewater treatment process.
What makes the residue from sludge digestor suitable as organic manure.
The picture shows how human activities can pollute groundwater. An aquifer is a huge reservoir of ground water.
Which of these measures can reduce groundwater pollution?
The picture shows how human activities can pollute groundwater. An aquifer is a huge reservoir of ground water.
How does defecating in the open cause groundwater pollution?
(1) Lime feeder
(2) Mechanical mixing
(3) Alum feeder
(4) Sedimentation tank
(5) Passing through gravel and sand
(6) Chlorine feeder
Read the passage given below
The release of crude petroleum oil into the environment, especially marine areas, due to human activities is known as an oil spill. The oil penetrates into the fur of animals and plumage of birds, thus reducing their insulating ability and making them less buoyant in water. Oil also impairs a bird’s flying ability. This oil on entering the body of animals affects the functioning of their digestive tract, liver and kidney. This leads to a metabolic imbalance in them. There are some aerobic and anaerobic bacteria that are capable of consuming oil and cleaning marine areas such as general aerobic bacteria (GAB), sulphate-reducing bacteria (SRB) and acid-producing bacteria. Answer the following question by choosing the correct option given below.
Which of the following is an effect of an oil spill?
