WUS 080 Wastewater Treatment Quiz
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Questions and Answers

What is typically done with solids removed from the primary treatment?

  • Released back into the water bodies
  • Stored in a separate tank
  • Hauled to the landfill for disposal (correct)
  • Sent for further treatment
  • What is true about total wastewater solids?

  • Only consist of suspended solids
  • Only consist of total dissolved solids
  • Unrelated to total dissolved or suspended solids
  • The sum of total dissolved solids and suspended solids (correct)
  • What are bacteria which cause diseases in humans generally called?

  • Pathogenic (correct)
  • Facultative
  • Coliforms
  • Mesophilic
  • What depletes oxygen when organic wastes are discharged into receiving waters?

    <p>Algae during the day</p> Signup and view all the answers

    Which step comes after Step 2 in the ordered steps related to wastewater solids treatment?

    <p>Step 3</p> Signup and view all the answers

    What controls the heavy metals in the plant influent flow according to Ⓒ40 CFR Part 503 regulations?

    <p>Pretreatment / Industrial discharge control program</p> Signup and view all the answers

    What is a sewer system designed to transport only wastewater from homes, industries, institutions, and businesses called?

    <p>Sanitary sewer</p> Signup and view all the answers

    What is NOT an ordered step related to wastewater solids treatment?

    <p>Building sewer</p> Signup and view all the answers

    What is the surface area in sq. ft of the circular clarifier with a circumference of 283 ft?

    <p>17,920 sq. ft</p> Signup and view all the answers

    What is the equivalent concentration in mg/l of a 6.35% solution?

    <p>635 mg/l</p> Signup and view all the answers

    What is the first step in wastewater treatment that involves collecting and transporting wastewater to the treatment plant?

    <p>Preliminary Treatment</p> Signup and view all the answers

    Which process removes organic matter as part of the biological process in wastewater treatment?

    <p>Secondary Process</p> Signup and view all the answers

    What is the first step in wastewater treatment at the plant where coarse material is removed?

    <p>Preliminary Treatment</p> Signup and view all the answers

    Which step involves separating settleable and floating solids in wastewater?

    <p>Primary Treatment</p> Signup and view all the answers

    What treatment process involves the treatment of solids removed from Primary and Secondary treatment processes for ultimate disposal?

    <p>Solids Treatment</p> Signup and view all the answers

    What is NOT a step related to wastewater solids treatment?

    <p>Tertiary Treatment</p> Signup and view all the answers

    Study Notes

    Wastewater Treatment Process

    • Solids removed from primary treatment are typically dewatered, thickened, or stabilized.
    • Total wastewater solids include all the solids present in wastewater, including suspended and dissolved solids.

    Pathogenic Bacteria

    • Bacteria that cause diseases in humans are generally called pathogenic bacteria.

    Oxygen Depletion

    • Organic wastes discharged into receiving waters deplete oxygen through the process of decomposition.

    Wastewater Solids Treatment

    • The step that comes after Step 2 is thickening or stabilization.
    • The regulations that control heavy metals in plant influent flow are Ⓒ40 CFR Part 503.

    Sewer System

    • A sewer system designed to transport only wastewater from homes, industries, institutions, and businesses is called a sanitary sewer system.

    Excluded Step

    • The step that is NOT an ordered step related to wastewater solids treatment is recycling.

    Clarifier Geometry

    • The surface area of a circular clarifier with a circumference of 283 ft is 39,696 sq.ft.

    Concentration Conversion

    • A 6.35% solution is equivalent to a concentration of 63,500 mg/l.

    Initial Wastewater Treatment

    • The first step in wastewater treatment involves collecting and transporting wastewater to the treatment plant through a process called conveyance.

    Biological Process

    • The process that removes organic matter as part of the biological process in wastewater treatment is biooxidation.

    Preliminary Treatment

    • The first step in wastewater treatment at the plant involves removing coarse material through a process called preliminary treatment.

    Primary Treatment

    • The step that involves separating settleable and floating solids in wastewater is primary treatment.

    Solids Treatment

    • The treatment process that involves the treatment of solids removed from primary and secondary treatment processes for ultimate disposal is sludge treatment.

    Excluded Step

    • The step that is NOT a step related to wastewater solids treatment is power generation.

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    Description

    Test your knowledge of wastewater treatment with these multiple-choice questions. Explore topics such as primary treatment, wastewater solids, bacteria in wastewater, and oxygen depletion in receiving waters.

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