Tata Steel Utilities and Infrastructure Services Design Engineer Interview Questions and Answers

STP stands for Sewage Treatment Plant, a process involving physical, chemical, and biological processes to treat wastewater.

• Primary treatment: Removal of large solids through screening and settling.

• Secondary treatment: Biological process where microorganisms break down organic matter.

• Tertiary treatment: Further purification through filtration and disinfection.

• Effluent discharge: Treated water is released back into the ...read more

SBR is a sequencing batch reactor while MBR is a membrane bioreactor.

• SBR is a type of activated sludge process where all treatment stages occur in the same tank, while MBR uses a membrane to separate the treated water from the activated sludge.

• SBR operates in batch mode, with alternating cycles of fill, react, settle, and decant, while MBR operates continuously.

• SBR typically has lower capital costs but higher operating...read more

Aeration is the process of adding air to a liquid to increase oxygen levels, improve circulation, and remove impurities.

• Aeration helps in promoting the growth of beneficial bacteria in wastewater treatment plants.

• It is commonly used in fish tanks to provide oxygen to the aquatic animals.

• Aeration can also be used in water treatment processes to remove volatile organic compounds.