ETP Chemist Interview Questions and Answers

High BOD in aeration tank can be controlled by adjusting the aeration rate, maintaining proper pH levels, and optimizing the sludge age.

• Adjust aeration rate to ensure sufficient oxygen supply without overloading the tank

• Maintain proper pH levels to prevent inhibition of microorganisms

• Optimize sludge age to ensure proper microbial growth and activity

• Regularly monitor BOD levels and adjust control measures accordingly

MLSS and MLVSS are key parameters used in wastewater treatment to measure the concentration of solids in the system.

• MLSS stands for Mixed Liquor Suspended Solids and represents the total concentration of solids (organic and inorganic) in the wastewater treatment system.

• MLVSS stands for Mixed Liquor Volatile Suspended Solids and represents the concentration of organic solids in the system.

• MLVSS is a subset of MLSS and is used to calculate the volatile fraction of the solids pr...read more

Chemical dosing in water treatment is crucial for maintaining water quality and ensuring effective treatment processes.

• Chemical dosing is the process of adding specific chemicals to water to achieve desired treatment outcomes.

• The dosing rate and frequency depend on the water quality parameters and treatment objectives.

• Examples of chemicals used for dosing in water treatment include chlorine for disinfection, coagulants for flocculation, and pH adjusters.

• Proper calibration of ...read more

The MEE plant plays a crucial role in the company by treating wastewater from various processes to meet environmental regulations.

• The MEE plant is responsible for treating wastewater generated from different processes within the company.

• It uses multiple stages of evaporation to concentrate the wastewater and remove impurities.

• The treated water is then reused or discharged in compliance with environmental regulations.

• The MEE plant helps the company reduce its environmental imp...read more