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BASIC WASTEWATER OPERATOR PRACTICE EXAM 2024 WITH 100% CORRECT ANSWERS What is the predominant organism in a healthy activated sludge treatment plant? A. Stalked ciliates B. rotifers C. nematodes D. amoebas - correct answer A. Stalked Ciliates A composite sample must be? A. sporadically collected in the treatment plant B. taken at one time C. analyzed immediately D. representative and sub-samples time spaced over 15 minutes apart - correct answer D. representative and sub-sam...

WASTEWATER PRACTICE EXAM 2024 WITH 100% CORRECT ANSWERS What's the methane content in a properly operating a anerboic digestor? - correct answer 65-70% by volume What will the addition of chlorine gas do to the pH of wastewatee - correct answer Decrease pH What's the purpose of a parshall flume? - correct answer Measure flowrate What's the typical removal efficiency of set table solids in a primary clarifier ? - correct answer 95-99% Which of the following is true about pumpi...

WASTEWATER LICENSE EXAM 2024 WITH 100% CORRECT ANSWERS the mechanism used to remove dewatered sludge from the belt of a belt filter press is commonly referred to as a: - correct answer doctor blade over a period of time, ultraviolet lights lose their intensity and must be replaced (T?F) - correct answer TRUE which of the following statements is true regarding ultraviolet light disinfection systems? - correct answer regular cleaning of light tubes is necessary to maintain optimal perfo...

WASTEWATER OPERATOR GUIDE TO PREPARING FOR THE CERTIFICATION EXAMINATIONS (CLASS B-A OR III-IV) Anaerobic digestion gas handling systems are kept under positive pressure for what reason? - correct answer To prevent air from entering the system and mixing with digester gas, which could cause an explosion What are the components of an effective safety program? - correct answer Regular safety briefings, daily practice, a strong advocate for safety, and a strong central leader. Which of the...

WASTEWATER PRACTICE EXAM 2024 WITH 100% CORRECT ANSWERS Odors occur when treatment becomes - correct answer Anaerobic What should an operator do before entering a manhole - correct answer Test for all hazardous gases and oxygen levels and ventilate the manhole before entering What treatment devices is commonly used to separate and remove large solids from raw wastewater - correct answer a mechanically raked bar screen What diseases are caused by pathogenic organisms that may be pre...

WASTEWATER CERTIFICATION EXAM 2024 WITH 100% CORRECT ANSWERS The first step in maintenance staff should take in properly locking and tagging out a piece of equipment is to - correct answer alert the operator on duty When working in an area with two or more floor coverings, be sure that they are always - correct answer Secured together When manually lifting any object be sure to - correct answer keep it close to your body and use leg strength Oxygen deficiency becomes a concern when...

WASTEWATER CLASS B OPERATOR EXAM 2024 WITH 100% CORRECT ANSWERS Bio-monitoring involves the use of aquatic life to test the toxicity of a wastewater treatment plant effluent. - correct answer TRUE The definition of an oxygen-deficient atmosphere is one that contains less than, what percentage of oxygen? - correct answer 19.5 1.) What is the function of a grit auger? - correct answer To Separate Organic from Inorganics 2.) Running a 30 min settling test is the best indication of wha...

WASTEWATER B LICENSE FL EXAM 2024 WITH 100% CORRECT ANSWERS 3 Amigos - correct answer F/M, SVI, Current WAS rate 3 M's - correct answer MLSS, MLVSS, MCRT High Sludge Age =_________ MCRT - correct answer High MCRT High Sludge Age=_______ MLSS - correct answer High MLSS Older Sludge F/M ratio - correct answer =< 0.1 lbs/day CBOD : 1lb MLVSS Young Sludge Bacteria - correct answer Amoebas, Flagellates, Swimming ciliates Old Sludge Bacteria - correct answer Nocardioforms...

TEXAS WASTEWATER CLASS B EXAM 2024 WITH 100% CORRECT ANSWERS The name of the State Agency responsible for enforcing pollution control laws in Texas - correct answer Texas Commission of Environmental Quality The term pathogenic means - correct answer Capable of causing disease The minimum separation between sewer lines and potable water lines is - correct answer 9 feet A licensed wastewater operator is a professional - correct answer consistently does best job possible, practices pe...

WASTEWATER TREATMENT B TEST EXAM 2024 WITH 100% CORRECT ANSWERS Liftstations at a treatment plant or those which discharge directly to a treatment plant with an average flow greater than 0.1 MGD shall have three or more pumps or have automatically controlled variable capacity pumps, these pumps should be adjusted to actual flow conditions and controlled to operate so as to: - correct answer Minimize surges in the treatment in the treatment units. In the contact stabilization system of ac...