Florida Wastewater Test with correct detailed solutions

Florida Wastewater Test with correct |||| |||| |||| |||| ||||




detailed solutions ||||




According to FDEP chapter 62-600.440 (4) (b) FAC, basic level disinfection is |||| |||| |||| |||| |||| |||| |||| |||| |||| |||| |||| ||||




described as: - correct answer✔✔A chlorine residual of 0.5 mg/L for 15 minutes |||| |||| |||| |||| |||| |||| |||| |||| |||| |||| |||| |||| ||||




at peak hourly flow
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FDEP chapter 62-604.550 (a) FAC, requires a wastewater spill shall be verbally
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reported to the state warning point no later than: - correct answer✔✔24hrs from
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discovery



What is the 'rule of thumb' regarding pump packing? - correct answer✔✔Never
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put rings of new packing over the old packing
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According to FDEP chapter 62-60, FAC, a composite sample shall be used for |||| |||| |||| |||| |||| |||| |||| |||| |||| |||| |||| |||| ||||




which test? - correct answer✔✔Effluent CBOD
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Chlorine residual can be measured in several ways, including the use of DPD
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reagent, spectrophotometers and iodometric titration. Which of the following is
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also an approved method? - correct answer✔✔Amperometric Titration
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Chapter 62-601, Domestic wastewater treatment plant monitoring, states that
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on-site tests for total residual chlorine, pH, and _______ can be performed under
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the direction of a certified operator: - correct answer✔✔Dissolved Oxygen(DO)
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Starting this type of pump against a closed valve can cause major damage to the
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pump, pump piping, the operator, or all three - correct answer✔✔Positive
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displacement pump ||||

,These types of samples may be used for CBOD5 and nutrients at flows less than
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100,000 GPD, according to chapter 62-601 - correct answer✔✔Grab samples
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According to FDEP chapter 62-602, drinking water and wastewater treatment|||| |||| |||| |||| |||| |||| |||| |||| |||| ||||




plant operators, duties of operators includes reporting to the permittee and the
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department, as soon as possible, but within 24hrs: - correct answer✔✔Any major |||| |||| |||| |||| |||| |||| |||| |||| |||| |||| ||||




interruption of service
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What could cause a centrifugal above ground pump to be noisy while running -
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correct answer✔✔Debris caught in the impeller housing
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According to FDEP chapter 62-601 FAC, Domestic wastewater treatment plant|||| |||| |||| |||| |||| |||| |||| |||| |||| ||||




monitoring, discharge monitoring reports (DMRs) for the previous month must |||| |||| |||| |||| |||| |||| |||| |||| |||| ||||




be submitted to the department by the ____________ day of the current month? -
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correct answer✔✔28th day |||| ||||




FDEP chapter 62-600 FC, domestic wastewater facilities, states that all
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treatment plants shall be____________ - correct answer✔✔Fenced |||| |||| |||| |||| |||| ||||




As the operator of a primary clarifier, you notice a black and odorous septic
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wastewater leaving the clarifier. What is the probable cause? - correct |||| |||| |||| |||| |||| |||| |||| |||| |||| |||| ||||




answer✔✔Improper sludge removal |||| ||||




A fire has started in the maintenance shop due to an ignition of petroleum oil.
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Which type of fire extinguisher should NOT be used to fight the fire? - correct
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answer✔✔Pressurized water ||||




Chlorine gas is how many times heavier than air - correct answer✔✔2.5
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The combination of methane and ____________ can be very combustible - correct
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answer✔✔Oxygen

, Plant effluent coliform count fails to meet the required standards for disinfection.
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Chlorine residual is normal. Disinfectant supplies ARE NOT a problem. What is
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the probable cause? - correct answer✔✔Contact time too short
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A fixed sample is: - correct answer✔✔A sample purposely spiked by the lab
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technician for QA/QC |||| ||||




According to FDEP chapter 62-602 FAC, an operator could have his license |||| |||| |||| |||| |||| |||| |||| |||| |||| |||| |||| ||||




permanently revoked for: - correct answer✔✔Falsified or misrepresented |||| |||| |||| |||| |||| |||| |||| ||||




reports, logs, or lab sheets |||| |||| |||| ||||




What process do the bacteria perform in the stabilization(re-aeration) tank in the
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contact stabilization process? - correct answer✔✔Absorption and digestion of
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the waste material they collected
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A screenings dumpster at the head works of the treatment plant is full at the end
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of the day. The dumpster is 6ft tall, 10ft long, and 8ft wide. How many cubic yards
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of screenings must be disposed of in a 30 day month? - correct answer✔✔533 (6
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x 10 x 8 = 480) (480 /27 = 17.7) (17.7 x 30 = 533)
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When properly adjusted, the rope packing on a centrifugal pump is designed to
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leak how much? - correct answer✔✔One drip per second
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A confined space is defined as having a space large enough to bodily enter and
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perform work, has limited entry and egress and is ___________? - correct |||| |||| |||| |||| |||| |||| |||| |||| |||| |||| |||| ||||




answer✔✔Not designed for continuous occupancy |||| |||| |||| ||||




You noticed that your bearings are excessively hot on a pump, why? - correct
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answer✔✔Over lubrication ||||