Treatment 2 Wastewater Operator certification Study Guide Exam GradedA

Treatment 2 Wastewater Operator certification Study Guide Exam GradedA General Wastewater Treatment: What is the pressure head caused by? - CORRECT ANSWER-Water elevation General Wastewater Treatment: What color should the piping be that contains reclaimed water? - CORRECT ANSWERpurple General Wastewater Treatment: What is the term for the height to which a column of water will rise in a well. - CORRECT ANSWER-piezometric surface General Wastewater Treatment: In general, what is the maximum practical lift of pumps - CORRECT ANSWER-15-25ft General Wastewater Treatment: Which one of the following valves is the best to use in throttling a flow situation? a. gate b. butterfly c. globe d. ball - CORRECT ANSWER-globe General Wastewater Treatment: Which one of the following devices is used to measure water depths in storage facilities? a. transducer b. Venturi meter c. magnetic sensor d. thermistor - CORRECT ANSWER-transducer Wastewater Treatment Facilities: The velocity in sanitary sewers is approximately: - CORRECT ANSWER-2 ft/s Wastewater Treatment Facilities: The distance between manholes ranges from - CORRECT ANSWER-300-500ft Wastewater Treatment Facilities: What should the flow velocity be through a grit channel - CORRECT ANSWER-1.0 ft/s Wastewater Treatment Facilities: Grit washers are used to______ a. remove some of the organic matter b. remove large pieces of wood c. remove rags and eggshells d. remove the odors - CORRECT ANSWER-remove some of the organic matter Wastewater Treatment Facilities: The most common flow-measure device for wastewater is a_____ - CORRECT ANSWER-parshall flume Wastewater Treatment Facilities: The detention time for primary clarifiers usually has a range of_____hr/s - CORRECT ANSWER-1.5-2hr Wastewater Treatment Facilities: The effluent from which process is called mixed liquor dary clarification b. primary clarification c. sludge drying bed or pond d. activated sludge - CORRECT ANSWER-activated sludge Wastewater Treatment Facilities: Aerobic ponds usually range in depth from ___-____ft - CORRECT ANSWER-3-6ft Wastewater Treatment Facilities: Anaerobic ponds usually range in depth from___-___ft - CORRECT ANSWER-8-12ft Wastewater Treatment Facilities: Another name for a waste stabilization pond is - CORRECT ANSWER-raw wastewater lagoon Wastewater sources & characteristics: Typically what average percent of total solids in a domestic wastewater, both dissolved and suspended, are inorganics - CORRECT ANSWER-