Indofil Industries EHS Officer Interview Questions and Answers

An ETP flow diagram and technical explanation

• ETP stands for Effluent Treatment Plant

• The flow diagram shows the process of treating wastewater before it is discharged into the environment

• The technical explanation includes the equipment and processes used in the ETP

• Examples of equipment used in ETPs include screens, clarifiers, and biological treatment systems

MEE flow diagram and ATFD MEE operation are related to the process of treating wastewater.

• MEE flow diagram refers to the process flow diagram of a Multiple Effect Evaporator (MEE) used in wastewater treatment.

• ATFD MEE operation refers to the operation of an Advanced Thermal Fracture Distillation (ATFD) system in conjunction with MEE.

• MEE is used to concentrate the wastewater by evaporating the water content, while ATFD ...read more

Heat transfer is the movement of heat from one object to another due to a temperature difference, while mass transfer is the movement of mass from one location to another.

• Heat transfer can occur through conduction, convection, or radiation.

• Examples of heat transfer include a hot cup of coffee cooling down in a room, or a stove heating up a pot of water.

• Mass transfer involves the movement of molecules or particles from ...read more

Distillation is a process of separating components of a liquid mixture based on differences in boiling points. Diffusion is the movement of molecules from an area of high concentration to an area of low concentration.

• Distillation involves heating a liquid mixture to create vapor, then cooling the vapor to condense it back into liquid form, separating the components based on their boiling points.

• Diffusion is the passive...read more

PID stands for Proportional-Integral-Derivative, a control loop feedback mechanism used in industrial processes to maintain desired setpoints.

• PID is a control algorithm that calculates an error value as the difference between a desired setpoint and a measured process variable.

• The PID controller then adjusts the process control inputs to minimize the error and keep the process variable close to the setpoint.

• The Proporti...read more

A thermowell in a tank is a protective device used to shield temperature sensors from the harsh environment inside the tank.

• Thermowells are typically made of metal and are inserted into the tank to provide a sealed chamber for the temperature sensor.

• They help protect the sensor from corrosion, pressure, and other damaging factors inside the tank.

• Thermowells also allow for easy removal and replacement of the temperature...read more