CPWM Sustainable Waste Management and Resource Recovery 3

Question 1

Which type of composting system is best suited for processing large volumes of food waste with minimum land requirements?

Accepted Answer

In-vessel composting

Answer

In-vessel composting encloses the process in a drum, tunnel, or container, enabling high throughput with a small footprint and controlled conditions.

Question 2

When evaluating end markets for recovered plastics, which factor most directly affects market stability?

Accepted Answer

Commodity price volatility and contamination levels

Answer

Commodity price swings and high contamination rates are the leading causes of market instability for recovered plastics.

Question 3

A 'zero waste' strategy prioritizes which hierarchy order?

Accepted Answer

Reduce, reuse, recycle, recover, dispose

Answer

Zero waste strategies follow the EPA waste hierarchy: reduce first, then reuse, recycle, recover energy, and dispose last.

Question 4

What does the term 'upcycling' mean in a resource recovery context?

Accepted Answer

Converting waste into a product of higher value or quality than the original

Answer

Upcycling transforms discarded materials into new products of greater value, improving on the original material's quality or function.

Question 5

Which parameter is most critical when designing a biogas capture system at an anaerobic digestion facility?

Accepted Answer

Hydraulic retention time and organic loading rate

Answer

Hydraulic retention time and organic loading rate govern microbial activity and biogas yield in anaerobic digestion.

(CPWM) Certified Professional in Waste Management Practice Test