Ca Grade 2 Wastewater Treatment Operator Practice Exam 4
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Course
Ca Grade 2 Wastewater Treatment Operator Practice
Institution
Ca Grade 2 Wastewater Treatment Operator Practice
Ca Grade 2 Wastewater Treatment
Operator Practice Exam 4
1 mg/l is the same as 1 part per billion Ans- F
A scada system is capable of monitoring and controlling equipment from where? Ans- remote location
A Discharge Monitoring Report is typically submitted to the regulatory agency on daily bas...
Algae is not essential to the successful operation of both aerobic and facultative ponds Ans- False =
Algae supply most of the oxygen to the supernattant
The addition of acid and CO2 will do what to wastewater? Ans- lower the pH of wastewater
Hydrogen sulfide will deteriorate what kind of structures? Ans- concrete structures
The higher the pH, the better the disinfection Ans- False =
Maintain a dissolved oxygen concentration of 12 to 14 mg/l in the aeration tank Ans- F
, What happens when the velocity of the wastewater in a clarifier is greater in some sections than others?
Ans- short circuiting
The F/M ratio will decrease when the microorganism population____________in the aeration tank?
Ans- increases
Algae growth will be faster when there is less sunlight Ans- F
How do higher temps affection disinfectione rates? Ans- Disinfection increases at higher temps
One of the benefits of recirculation for a trickling filter is that it drcreses the contact time of the
wastewater with the biological film Ans- F
How do you prevent foaming from recurring in a anaerobic digester? Ans- Maintaining a constant
temperature
Preventative maintenence is a proactive, programmed, and...... Ans- systematic approach to
maintenance
Abnormal operation in a pond will not occur if it is overloaded with BOD Ans- F
Anaerobic decomposition of sweage will release? Ans- hydrogen sulfide
Always pour water into acid, and never the other way around Ans- F
Scum escaping in the clarifier effluent could be caused by what? Ans- hydraulic overload
Operate an activated sludge system at low MCRT if you have what? Ans- limited aeration capacity
Chlorine gas is brown in color Ans- False = yellow green
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