What are the major sources of wastewater generated in agriculture?

Agriculture generates wastewater containing harmful pesticides, biocides, and animal waste.

Fill in the blank: The water that comes out of sedimentation tanks after primary treatment is called ___ water.

Clarified

What is the role of the grit chamber in the primary treatment of wastewater?

The grit chamber is used to remove grit and sand from wastewater, preventing damage to subsequent treatment equipment.

Fill in the blank: Nutrient-rich runoff from agricultural fields contributes to ___ in lakes.

Eutrophication

Describe the purpose of tertiary treatment in wastewater treatment processes.

Tertiary treatment removes contaminants effectively.

• Eliminates remaining pollutants.

• Ensures water safety for discharge.

• Uses chemicals for disinfection.

What are the disadvantages of septic tanks as a method of sewage disposal?

Disadvantages of septic tanks.

• Risk of groundwater contamination.

• Requires regular maintenance checks.

• Limited capacity for wastewater.

Fill in the blank: Proper sanitation in public places is essential to prevent ___ and ___ risks.

Health and environmental