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Water Treatment Operator Level 1 Sample Questions (Water Operator Certification Study Guide)

Water Treatment Operator Level 1 Sample Questions (Water Operator Certification Study Guide)

What are the two important factors impacting the effectiveness of chlorination?
(Ans - Concentration of chlorine and contact time

The treatment process that controls corrosion or scaling is known as what?
(Ans - Stabilization

Permanganate reactions are highly dependent on what factor?
(Ans - pH

It is hardest to kill the organism that causes what illness?
(Ans - Cryptosporidiosis

Disinfection of water wells with free chlorine requires exposure for how long and at what concentration?
(Ans - 12 to 24 hours; 50mg/L

Flocculation basins are usually designed to provide for detention times of how long?
(Ans - 15 to 45 minutes

Alum works best in a pH range of what?
(Ans - 5.8 to 7.5

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