Question

What is the purpose of chlorination in wastewater treatment? What are the various sources from which wastewater is generated? [3 MARKS]

Answer 1

Chlorination: 1 Mark
Sources: 2 Marks

Chlorine is used in wastewater treatment to disinfect the water.
The various sources from which wastewater is produced are:

• Homes: Water used in washing, cleaning, bathing, cooking etc.
• Industries: Water used in washing raw materials, cleaning machines, coolants.
• Agricultural fields: Water used for irrigation washes off chemical fertilizers, insecticides, etc.
• Other human activities: Water used for water sports, festivals etc.