Wastewater Operator certification Study Guide-Grade 2 correctly answered 2023

Wastewater Operator certification Study Guide-Grade 2 correctly answered 2023General 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 answer purple 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