OHANANCIETA

During start up your aeration tank produces excessive amounts of billowing white foam. This can be corrected

What is true about chlorine gas? - ANSWERIt is 2.5 times heavier than air What is the typical BOD removal efficiency in a primary clarifier? - ANSWER20 to 50% What does the "F" in F/M ratio represent? - ANSWERThe food for the microorganisms flowing into the aeration tank, in lbs/day What describes the appearance of healthy activated sludge? - ANSWERBrown with a moderate amount of crisp, white foam What is used to control filamentous organisms? - ANSWERChlorine What are commonly ...

The first step in maintenance staff should take in properly locking and tagging out a piece of equipment is to - ANSWERalert the operator on duty When working in an area with two or more floor coverings, be sure that they are always - ANSWERSecured together When manually lifting any object be sure to - ANSWERkeep it close to your body and use leg strength Oxygen deficiency becomes a concern when the oxygen level in a confined space is less than - ANSWER19.5%

Biochemical Oxygen Demand -ANSWERorganic strength measured by amount of oxygen consumed over time composite sample -ANSWERsample combined from multiple grab samples grab sample -ANSWER1 sample representative of current conditions Dissolved Oxygeb -ANSWERmeasure of the amount of oxygen dissolved in water (mg/l) effluent -ANSWERtreated water discharged from a treatment plant eutrophication -ANSWERexcissive growth of plant/algae in receiving waters due to dissolved nutrients and thei...

In the activated sludge process, some of the activated sludge must be wasted to... A. Prevent excessive solid buildup B. Prevent clogging of the sludge return line C. Prevent overloading of sludge return pumps D. Increase digester gas production -ANSWER A. Prevent excessive solid buildup The best operating strategy for feeding primary sludge to an anaerobic digester is to feed... A. Several time a day B. Large quantities once or twice a day C. Once a day D. When the volatile solid...

1 mg/l is the same as 1 part per billion (ppb) True or False -ANSWER False (v.1 pg 468) A SCADA system is capable of monitoring and controlling equipment from a remote location True or False -ANSWER True (v.2 pg 627) A Discharge Monitoring Report is typically submitted to the regulatory agency on a daily basis True or False -ANSWER False A mechanical seal is used to prevent leaks between the pump casing and shaft. True or False -ANSWER True (v.2 pg 356) Alkalinity is the...

What is the typical BOD removal efficiency in a primary clarifier? A) 10 to 15% B) 40 to 60% C) 20 to 50% D) 95 to 99% -ANSWER C) 20 to 50% (v.1 pg 129) What does the "F" in F/M ratio represent? A) The microorganism population in the aeration tank B) The amount of filamentous bacteria in the activated sludge process C) The MLVSS in the aeration tank D) The food for the microorganisms flowing into the aeration tank, in lbs/day -ANSWER D) The food for the microorganisms flowing in...

What OSHA standard deals with the Construction industry ONLY? - ANSWERS29 CFR 1926 What type of work has been OSHA's most cited violation for the years - ANSWERSScaffolding T or F The mission of OSHA is to save lives, prevent injury, and protect the health of American workers? - ANSWERSTrue T or F An employer is responsible to establish and enforce policies that at least meet the minimum safety requirements of the OSHA standard? - ANSWERSTrue T or F If a client's Safety & Health p...

OSHA 10 & Final Review Already Passed 2024!!

What are the four main types of electrical injuries -ANSWERS Electrocution, electric shock, burns, indirect (e.g., a fall from a ladder) Two of the main differences between the hydraulic rough terrain crane and the crawler lattice boom friction crane are -ANSWERS In boom hoist and load line controls The greatest hazards posed by hand tools result in -ANSWERS Misuse and improper maintenance In general, head protection should do which of the following? -ANSWERS All of the above