Ques ans:
Name two strong acids.
Differentiate between Base and alkali.
What is sewerage?
Write the process of obtaining clarified water,
Discuss the process involved in a sewage treatment plant in detail
Answers
Answer:
1) HCl - hydrochloric acid.
H2SO4 - sulfuric acid
3)Sewerage is the infrastructure that conveys sewage or surface runoff using sewers. It encompasses components such as receiving drains, manholes, pumping stations, storm overflows, and screening chambers of the combined sewer or sanitary sewer.
4) A skimmer removes the floatable solids like oil and grease. Water so cleared is called clarified water. Sludge is used to produce biogas. Clarified water is then passed through an aerator tank where air is pumped into the water.
5)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.