OHIO WASTEWATER OPERATOR CLASS IV EXAMINATION COMPLETE VERIFIED QUESTIONS AND DETAILED SOLUTIONS LATEST UPDATE THIS YEAR JUST RELEASED

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OHIO WASTEWATER OPERATOR CLASS IV
EXAMINATION COMPLETE VERIFIED QUESTIONS
AND DETAILED SOLUTIONS LATEST UPDATE THIS
YEAR JUST RELEASED


Abnormal operation in a pond will not occur if it is
overloaded with BOD.


True or False - Answer-False (v.1 pg 307)


Anaerobic decomposition of sewage will release hydrogen
sulfide.


True or False - Answer-True (v.1 pg 20)


Always pour water into acid, and never the other way
around.


True or False - Answer-False (v.2 pg 302)


Scum escaping in the clarifier effluent could be caused by
hydraulic overload.

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True or False - Answer-True (v.1 pg 124)


Operate an activated sludge system at low MCRT if you
have limited aeration capacity.


True or False - Answer-True (v.2 pg 59)


Chlorine gas is brown in color.


True or False - Answer-False (v.2 pg 268)


Typical suspended solids concentration of domestic
influent wastewater is 150 to 400 mg/l.


True or False - Answer-True (v.2 pg 54)


Poor ventilation of a trickling filter could lead to odor
problems.


True or False - Answer-True (v.1 pg 193)

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Sulfur dioxide is used to dechlorinate the effluent prior to
discharge to protect aquatic organisms in the receiving
waters.


True or False - Answer-True (v.1 pg 401)


MCRT describes the average residence time of the
activated sludge particle in the return sludge pipe.


True or False - Answer-False (v.2 pg 522)


Free chlorine combines with water to form hypochlorous
and hydorchloric acids.


True or False - Answer-True (v.1 pg 349)


The trickling filter can be controlled by changing the
loadings based on sludge age, F/M ratio, or MCRT.


True or False - Answer-False (v.2 pg 58)