WASTEWATER GRADE 1 TEST 2025 WITH 300 PRACTICE QUESTIONS AND CORRECT ANSWERS WASTEWATER TREATMENT OPERATOR GRADE 1 CERTIFICATION TEST 2025 (BRAND NEW!)

WASTEWATER PRACTICE TEST (FLORIDA) ENGL g g g g


ISH EXAM (2025) QUESTIONS WITH VERIFIED CO
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RRECT ANSWERS. g




When working in a man hole, what would be the biggest danger
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? - <<<Answers>>>>Asphyxiation
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What is the benefit of step feed aeration? -
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<<<Answers>>>>Treat higher flows in less space g g g g g




What is classic sludge bulking caused from? -
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<<<Answers>>>>Young sludge g




What should be the maximum allowable level of TSS and BO
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D in the effluent of a domestic wastewater facility in accordanc
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e with FAC? -
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<<<Answers>>>>20 TSS, 20 BOD or 90% removal
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What does CBOD mean? -
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<<<Answers>>>>Carbonaceous Biochemical Oxygen Deman
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d


What is the minimum depth of a pond? -
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<<<Answers>>>>3 feet
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,What causes the most wear to an impeller? -
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<<<Answers>>>>Grit


If a pump will not start and you have power at the breaker, what
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is the next logical step? -
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g<<<Answers>>>>Check for blown fuses g g g




What affect does CL2, acid, and CO2 have on pH? -
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<<<Answers>>>>Lower


As an operator, how do you control the anaerobic digestion proc
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ess? - g


<<<Answers>>>>Temperature and rate of raw sludge feed
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What is a true statement about recording data? -
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<<<Answers>>>>There are many techniques to record data g g g g g g




According to FAC chapter 62- g g g g


600, Domestic wastewater facilities, your job as an operator dur
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ing major process breakdowns is to? -
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g<<<Answers>>>>Maintain competent documentation and rec g g g g


ord keeping g




Short circuiting in a primary clarifier can be prevented by? -
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<<<Answers>>>>Baffles

, What do you do if you experience a plant upset due to a hydraul
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ic overload? -
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g<<<Answers>>>>Decrease WAS to maintain microorganism g g g g g


population


A colored dye solution is added into the raw wastewater enterin
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g a primary settling tank. The dye color was noticeable in the eff
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luent in 15 minutes and all of the color had passed through the t
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ank in 40 minutes. What does this indicate? -
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<<<Answers>>>>Wastewater is passing through the tank too q g g g g g g g


uickly for effective settling
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A spray field has a total of 80 acres and is divided into four equa
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l zones. Only one zone may be operated at a time and the permit
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gstates that no more than 4 inches of water can be applied to the
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zone. How long can a zone be operated at a rate of 0.7 MGD bef
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ore it must be rotated to another zone? -
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<<<Answers>>>>3.1 days g




Most activated sludge mixed-
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liquor suspended solids fall into a range of what percent volatil
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e content for municipal waste when the process is operating pr
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operly? - g


<<<Answers>>>>70 to 80% g g




What may be the first corrective action taken to resolve floatin
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g sludge conditions in a secondary clarifier, given these observ
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ations: SVI is 132; microscopic exam reveals abundance of fila
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mentous organisms - g g


<<<Answers>>>>Increase DO g