Free NEHA Wastewater Management Questions and Answers

Question 1

What is the primary purpose of a wastewater treatment plant?

Accepted Answer

To remove contaminants from wastewater before discharge

Answer

Wastewater treatment plants are designed to remove contaminants from wastewater to protect public health and the environment before releasing it into water bodies.

Question 2

Which of the following is the first step in the wastewater treatment process?

Accepted Answer

Primary treatment

Answer

Primary treatment involves screening and sedimentation to remove large solids and some organic matter from wastewater.

Question 3

What is the main goal of secondary wastewater treatment?

Accepted Answer

To reduce the biochemical oxygen demand (BOD) and suspended solids

Answer

Secondary treatment uses biological processes to further degrade organic matter, reducing BOD and suspended solids in the wastewater.

Question 4

Which process is commonly used for nutrient removal in tertiary wastewater treatment?

Accepted Answer

Biological nutrient removal (BNR)

Answer

BNR processes, such as nitrification and denitrification, are used to remove nitrogen and phosphorus from wastewater during tertiary treatment.

Question 5

What is sludge in the context of wastewater management?

Accepted Answer

The solid waste produced from wastewater treatment

Answer

Sludge is the thick, semi-solid byproduct of wastewater treatment, consisting of organic matter, microorganisms, and other solids removed during the treatment process.

NEHA - National Environmental Health Association Practice Test

NEHA - National Environmental Health Association Practice Test

Free NEHA Wastewater Management Questions and Answers