Wastewater Operator certification Study Guide-Grade 2 Test Questions with 100% Correct Answers
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Course
Wastewater
Institution
Wastewater
Wastewater Treatment Facilities:
Anaerobic ponds usually range in depth from___-___ft - 8-12ft
Wastewater Treatment Facilities:
Another name for a waste stabilization pond is - raw wastewater lagoon
Wastewater Operator certification Study Guide -Grade 2 Test Questions with 100% Correct Answers Wastewater Treatment Facilities: Anaerobic ponds usu ally range in depth from___ -___ft - ✔8-12ft Wastewater Treatment Facilities: Another name for a waste stabilization pond is - ✔raw wastewater lagoon Wastewater sources & characteristics: Typically what average percent of total solids in a domes tic wastewater, both dissolved and suspended, are inorganics - ✔50% Wastewater sources & characteristics: Typically, what average percent of total solids in domestic wastewater, both dissolved and suspended, are inorganics? - ✔50% Wastewater sourc es & characteristics: Approx. what % of the dissolved solids in wastewater are inorganics - ✔87% Wastewater sources & characteristics: Approximately what % of the dissolved solids in wastewater are organics - ✔12% Wastewater sources & character istics: Which organism wold most probably be associated with moderate sludge age and effluent water quality - ✔free-swimming ciliates Wastewater sources & characteristics: Which organism would most probably be associated with high suspended solid s and biochemical oxygen demand (BOD) - ✔amoebas Wastewater sources & characteristics: High suspended solids and BOD are most probably associated with which type of organisms? - ✔flagellates Wastewater sources & characteristics: What organism w ould most likely enhance the penetration of oxygen into the activated sludge - ✔rotifers Rocks/Screens/Comminutors & Grit Removal: Chlorine gas has a specific gravity of - ✔2.5 specific gravity Rocks/Screens/Comminutors & Grit Removal: Proper f low velocity through a grit channel is indicated when the grit being removed contains a. no organics b. a little organic material c. about half the volume as the grit being removed d. about the same volume as the grit being removed - ✔a little organi c material Sedimentation and Flotation: Surface loading and detention time is a clarifier are directly related to: - ✔flow through a clarifier Sedimentation and Flotation: What is the expected range for the removal of settleable solids from a primary clarifier? - ✔95-99% Sedimentation and Flotation: What condition will occur if sludge is not pumped out of primary clarifiers at regular intervals? - ✔clarifier will become septic Sedimentation and Flotation: Secondary clarifiers are us ually located after: a. primary clarifier b. an anaerobic digester c. a biological process d. preaeration - ✔a biological process Sedimentation and Flotation: Filter sloughings are a product of: - ✔biological action Sedimentation and Flotat ion: when one liquid is dissolved in another liquid it is called - ✔an emulsion Sedimentation and Flotation: What is the optimum temperature for digester substances? - ✔90 degrees F Secondary Treatment: Which one of the following types of wa stewater ponds listed below is not classified like the other three? a. polishing pond 2. oxidation pond c. aerobic pond d. raw sewage - ✔aerobic pond Secondary Treatment: What type of pond would receive wastewater form a secondary treatment system? - ✔polishing pond Secondary Treatment:
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