Manager Certification Practice Exam

Industrial Waste Treatment Facility Manager Certification Practice Exam Questions And Correct Answers (Verified Answers) Plus Rationales 2026 Q&A | Instant Download Pdf

• What is the main objective of industrial waste treatment?
• To increase production rates
• To reduce environmental pollution
• To remove contaminants from wastewater before discharge
• To improve product quality

Rationale: Waste treatment aims to minimize pollutant loads and protect

environmental and public health.

• Which federal law regulates the discharge of pollutants into U.S. waters?
• Safe Drinking Water Act
• Clean Water Act 1 / 4

• Resource Conservation and Recovery Act

D. CERCLA

Rationale: The Clean Water Act establishes the structure for regulating

pollutant discharges and water quality standards.

3. Primary treatment in wastewater focuses mainly on:

• Removing suspended solids
• Removing dissolved organics
• Killing pathogens
• Neutralizing pH

Rationale: Primary treatment is a physical process removing settleable and

floatable solids.

• What unit is commonly used to measure organic pollution in wastewater?
• COD only
• TOC only
• BOD (Biochemical Oxygen Demand)
• Suspended solids

Rationale: BOD measures the amount of oxygen required by

microorganisms to decompose organic matter.

• / 4

• Which process converts ammonia to nitrate?
• Denitrification
• Nitrification
• Fermentation
• Flocculation

Rationale: Nitrification is a two-step aerobic process converting ammonia

to nitrate.

6. In activated sludge systems, the main biological agents are:

• Protozoa
• Bacteria
• Fungi
• Viruses

Rationale: Bacteria decompose organic material, forming floc that settles

easily.

7. A typical pH range suitable for biological treatment is:

A. 3–5

B. 5–6

C. 6.5–8.5

D. 8.5–10

Rationale: Most treatment microbes thrive in near-neutral pH conditions. 3 / 4

• Which device measures flow rate in wastewater lines?
• Turbidity meter
• Flowmeter
• Dissolved oxygen probe
• Manometer

Rationale: Flowmeters quantify volumetric flow through pipes or channels.

• Which pollutant type causes oxygen depletion in water bodies?
• Biodegradable organics
• Heavy metals
• Nutrients
• Oils

Rationale: Biodegradable matter consumes oxygen during microbial

decomposition.

10. The sludge volume index (SVI) measures:

• Oxygen demand
• Settling characteristics of activated sludge
• Organic strength
• Solids loading
• / 4