Treating Waste Water

Question 1

Sewage Treatment Steps and their Reasons?

Answer 1

• Screening: Removes Large Solid Objects and Grit From the Rest of the Waste Water. It Passes Through a Metal Grid.
• Primary Treatment: In the First Circular Tank, the Solid Sediments are Allowed to Settle Out From the Mixture.
• Secondary Treatment: In the Second Tank, Useful Bacteria Feed on Any Remaining Organic Matter and Harmful Microorganisms.
• Final Treatment: In the Last Tank, the Useful Bacteria are Allowed ti Settle Out to the Bottom of the Tank as a Sediment. This is Recycled.