Wastewater level 3 - Study guides, Class notes & Summaries

To have significant meaning for laboratory tests of the evaluation of a wastewater treatment plant's performance the best method of sampling is A. Grab sampling B. Hourly sampling C. Sampling during peak flow D. Proportional composite sampling E. Automatic sampling - correct answer D. Proportional composite sampling BOD samples should be collected before chlorination because A. Chlorine reacts with the buffer solution B. Chlorine interferes with the activity of organisms C. Chlorine ...

ABC Wastewater Collection Level 3/ 77 Q&A/ . Terms like: Turbidity in wastewater is caused by A. color B. dissolved calcium C. hardness D. finely divided suspended material - Answer: D. finely divided suspended material The gas most commonly associated with septic wastewater is A. carbon dioxide B. carbon monoxide C. hydrogen sulfide D. methane - Answer: C. hydrogen sulfide

CWEA Collections System Maintenance Grade 3 Complete Questions with Correct Answers A Flagger should Stand? A. On the shoulder adjacent to traffic being controlled B. In the closed lane before stopping vehicle traffic C. In the traffic lane. D. As stated in "A" or "B" above. D. As stated in "A" or "B" above. Legally responsible officials are required to report category 1 sanitary sewer overflows? A. Within 30 days B. Before end of the day C. As soon as possible D. Within 2 hou...

Why should the pumps in a lift station not start and stop frequently? Pump in a lift station should not start and stop frequently because frequent motor starts cause excessive wear on equipment and may cause surges in the Wastewater flow. Also, frequent starting will increase power cost. What problems develop in a wet well that is too large? If a wet well is too large, solids will tend to accumulate on the bottom because the wet well will be acting as a settling tank, accumulated solids...

ABC Wastewater Collection Level 3 Exam New 2024 Version Best Studying Material with All Questions and Correct Answers

1. How much does a cubic foot of water weigh? - Answer-a. 8.34 lbs b. 7.48 lbs c. 62.38 lbs d. 15.82 lbs 2. What is the best way to store a 150# chlorine gas cylinder? - Answer-a. On its side b. Above ground level c. Upright, secured from falling 3. Which is not a proper alternative for treatment of industrial wastewater? - Answer-a. Pretreatment by the IWTS followed by discharge to the POTW b. Direct discharge to receiving waters c. Discharge to POTW for treatment d. Complete treatme...

What removes Total Suspended Solids from a sample (TSS) - filtration What chapter of the Texas Water Code gives T C E Q authority to control discharges in Texas. - Chapter 26 Inorganic solids include - sand, grit and minerals Organic solids include - organic materials from plants, animals or humans A good plant influent pH is about - 7.2 A simple method for indicating when to waste sludge is - 30 minute settling test What is the expected organic loading of a stabilization pond ...

Operation of Wastewater Treatment prep complete exam questions and verified answers 2024/2025 An Imhoff cone is used to measure________solids. A. suspended B. colloidal C. volatile D. settleable D. settleable (Operation of Wastewater Treatment Plants, Volume 1 by Kenneth D. Kerri) A _____ flume is widely used for measuring wastewater flow. Parshall (Operation of Wastewater Treatment Plants, Volume 1 by Kenneth D. Kerri) Velocity of flow in a grit channel must be reduced ...

ABC Wastewater Collection Level 3/ 77 Q&A/ . Terms like: In certain situations, a supervisor encourages the employees to make their own decisions. This is considered to be A. against the rules to follow past experiences in decision-making B. bad form since the supervisor eventually loses control C. highly desirable, since it encourages employee growth and frees the D. supervisor for other tasks E. passing the buck - Answer: C. highly desirable, since it encourages employee growth

Texas Class C Wastewater Treatment License Questions And Answers Latest 2024/2025 Graded A+. Preliminary Treatment - ANSWER-the 1st stage of sewage treatment where large debris, such as sticks, grit, and rags pas through a screen followed by a grit chamber, where the flow of water is slowed enough to allow for sedimentation. What stage of treatment is grit removal usually accomplished in? - ANSWERpreliminary treatment Rotating Biological Contactor - ANSWER-a type of biological secondary trea...