Thermax Limited Chemical Engineer Interview Questions and Answers

RT in wastewater treatment plant refers to the retention time, which is the amount of time wastewater remains in a treatment system.

• RT is a critical parameter in wastewater treatment plants as it determines the efficiency of the treatment process.

• It is calculated by dividing the volume of the reactor by the flow rate of influent wastewater.

• A longer retention time allows for more thorough treatment of contaminants in th...read more

DAF stands for Dissolved Air Flotation, a water treatment process used to remove suspended solids, oils, and other contaminants.

• DAF involves the introduction of fine air bubbles into a water stream to float the particles to the surface for removal.

• It is commonly used in industrial wastewater treatment plants.

• DAF is effective in removing contaminants such as oils, grease, and suspended solids.

• The floated particles are t...read more

Sludge waste can be calculated by determining the volume or weight of sludge produced and multiplying it by the density of the sludge.

• Calculate the volume or weight of sludge produced

• Determine the density of the sludge

• Multiply the volume or weight by the density to get the total sludge waste