Exam Study Guide: Preliminary/Primary Treatment

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When faced with a licensing exam, don't struggle with test anxiety! Use the question below and others from our Exam Study Guide series to properly study and prepare for exam questions. See if you can answer this sample wastewater treatment licensing question.

Sample question:

What portion of the wastewater treatment process is generally regarded as protecting the downstream equipment?

A) Preliminary treatment

B) Primary treatment

C) Secondary treatment

D) Tertiary treatment

Preliminary treatment is responsible for removing large nonorganic items and grit from the waste stream, which can cause damage or wear and tear on pumps and equipment in subsequent treatment steps. Preliminary treatment includes bar screens, shredders, cutters and grit chambers. So, the answer is A, preliminary treatment.

Source: WEF MOP11 18-2


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