Ca Grade 2 Wastewater Treatment Operator Practice Exam 4 fully solved 2023

Ca Grade 2 Wastewater Treatment Operator Practice Exam 4 fully solved 20231 mg/l is the same as 1 part per billion - correct answer F A scada system is capable of monitoring and controlling equipment from where? - correct answer remote location A Discharge Monitoring Report is typically submitted to the regulatory agency on daily basis - correct answer False = Monthly A mechanical seal is used to prevent leaks between where? - correct answer between the pump casing and shaft Alkalinity is the capacity of a liquid to neutralize base - correct answer False = Alkalinity neutralizes acids Typical mixed liquor suspended solids concentration is? - correct answer 1,000 to 4,500 mg/l Turbidity is caused by... - correct answer suspended matters Algae is not essential to the successful operation of both aerobic and facultative ponds - correct answer False = Algae supply most of the oxygen to the supernattant The addition of acid and CO2 will do what to wastewater? - correct answer lower the pH of wastewater Hydrogen sulfide will deteriorate what kind of structures? - correct answer concrete structures The higher the pH, the better the disinfection - correct answer False = Maintain a dissolved oxygen concentration of 12 to 14 mg/l in the aeration tank - correct answer F What happens when the velocity of the wastewater in a clarifier is greater in some sections than others? - correct answer short circuiting The F/M ratio will decrease when the microorganism population____________in the aeration tank? - correct answer increases Algae growth will be faster when there is less sunlight - correct answer F How do higher temps affection disinfectione rates? - correct answer 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 - correct answer F How do you prevent foaming from recurring in a anaerobic digester? - correct answer Maintaining a constant temperature Preventative maintenence is a proactive, programmed, and...... - correct answer systematic approach to maintenance Abnormal operation in a pond will not occur if it is overloaded with BOD - correct answer F Anaerobic decomposition of sweage will release? - correct answer hydrogen sulfide Always pour water into acid, and never the other way around - correct answer F Scum escaping in the clarifier effluent could be caused by what? - correct answer hydraulic overload