Wastewater Operator Certification Quiz: 1. The alkalinity test - TopicsExpress

Wastewater Operator Certification Quiz: 1. The alkalinity test tells us the ability of the sample to neutralize a. acids b. bases c. chlorine d. toxic metals 2. The rate of sludge digestion in a digester is directly related to the a. Supernatant b. Temperature c. Solids d. Digester gases 3. Anerobic refers to a. Absence of hydrogen sulfide b. Absence of water c. Absence of heat d. Absence of oxygen 4. The best pH range for acceptable organism activity in the treatment plant is a. 5 – 9 b. 6 – 8 c. 4.5 – 9.5 d. 0 – 14 5. One would expect to find highest nitrate levels in a well functioning WWTP a. Influent b. Primary effluent c. Grit chamber d. Effluent Answers: 1. A 2. B 3. D 4. B 5. D

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