Preview Questions Wastewater Treatment Engineer | Role Specific Skill

Question 1: In the context of wastewater treatment, what is the main goal of "phosphorus removal"?

Which action should you take?

Choose only one option

To prevent eutrophication in receiving water bodies

To lower the temperature of wastewater before discharge

To decrease the biological oxygen demand (BOD) of the wastewater

To reduce the amount of ammonia in effluent

Question 2: Which treatment method is typically used for the removal of fats, oils, and greases (FOG) from wastewater?

Which action should you take?

Choose only one option

Membrane filtration

Chemical precipitation

Air flotation

Coagulation and flocculation

Question 3: Which of the following is a key challenge when treating wastewater with high concentrations of organic matter?

Which action should you take?

Choose only one option

Managing the high oxygen demand during biological treatment

Reducing the pH of the effluent

Preventing the accumulation of biofilm in the treatment system

Minimizing the cost of waste-to-energy conversion

Question 4: What is the main function of a sand filter in wastewater treatment?

Which action should you take?

Choose only one option

To remove fine suspended particles after biological treatment

To regulate the pH level of the effluent

To remove large particulate matter in the primary treatment phase

To provide additional aeration for biological processes

Question 5: In which type of wastewater treatment system is anaerobic digestion most commonly used?

Which action should you take?

Choose only one option

Chemical treatment to neutralize hazardous substances

Final polishing to remove fine particles

Sludge treatment for reducing volume and stabilizing solids

Primary treatment to remove large solids

Question 6: What is the primary cause of anoxic conditions in a wastewater treatment plant?

Which action should you take?

Choose only one option

Lack of appropriate pH control

Insufficient oxygen supply in the aeration tank

Excessive nutrient loading

High concentrations of dissolved oxygen