Environmental Health and Safety Chemist Interview Questions and Answers

Aeration effluent treatment is a process of exposing wastewater to air to promote the growth of aerobic bacteria that break down organic matter.

• Wastewater is pumped into a tank or basin and mixed with air to increase oxygen levels.

• Aerobic bacteria consume organic matter and convert it into carbon dioxide, water, and other harmless byproducts.

• The treated water is then separated from the sludge and disinfected before being released into the environment.

• Aeration can be done thro...read more

EHS stands for Environment, Health and Safety. It is a field that deals with ensuring the safety and well-being of employees and the environment.

• EHS involves identifying and assessing potential hazards in the workplace

• It also involves implementing measures to control and mitigate those hazards

• EHS professionals work to ensure compliance with regulations and standards

• Examples of EHS measures include safety training, personal protective equipment, and emergency response plans

COD stands for Chemical Oxygen Demand, a measure of the amount of organic matter in water.

• COD is a common parameter used in water quality testing.

• It measures the amount of oxygen required to oxidize organic matter in water.

• High COD levels indicate high levels of organic pollution in water.

• COD can be used to determine the effectiveness of wastewater treatment processes.

• COD is often used in conjunction with BOD (Biochemical Oxygen Demand) to assess water quality.