Question

Discuss various methods for the treatment of domestic wastewater

Answer 1

Processes like screening, sedimentation and skimming are used to remove the solids. No chemicals are involved in this process. One of the main techniques of physical wastewater treatment includes sedimentation, which is a process of suspending the insoluble/heavy particles from the wastewater

Sewage treatment generally involves three stages, called primary, secondary and tertiary treatment. Primary treatment consists of temporarily holding the sewage in a quiescent basin where heavy solids can settle to the bottom while oil, grease and lighter solids float to the surface.

By using wastewater as a resource rather than a waste product you can:

• reduce water bills.
• use fewer water resources.
• irrigate the garden during drought or water restrictions.
• cut down the amount of pollution going into waterways.
• help save money on new infrastructure for water supplies and wastewater treatment.