Engineered Stormwater Management Techniques
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Questions and Answers

Which of these is a renewable resource?

  • Coal
  • Iron
  • Vegetative lands (correct)
  • Copper
  • What is a characteristic of non-metallic minerals?

  • They contain metals
  • They are softer and do not shine (correct)
  • They can be melted to form new products
  • They are harder and shiny
  • What is the purpose of environmental technology?

  • To increase the use of non-metallic minerals in industry
  • To find alternative sources of metallic minerals
  • To monitor and conserve the natural environment and resources (correct)
  • To extract more non-renewable resources from the earth
  • Which of these is an example of a renewable energy source?

    <p>Sun</p> Signup and view all the answers

    What is the goal of water purification technology?

    <p>To have dirt/germ/pollution free water flowing through the environment</p> Signup and view all the answers

    Which of these is classified as an inorganic resource?

    <p>Fossil fuels</p> Signup and view all the answers

    What is the purpose of an infiltration trench?

    <p>To create underground reservoirs for stormwater runoff</p> Signup and view all the answers

    What are grass filter stripes used for?

    <p>To treat surface flow from adjacent impervious areas</p> Signup and view all the answers

    What is the first step in purifying surface water?

    <p>Screening to remove large debris</p> Signup and view all the answers

    What is the purpose of an infiltration basin?

    <p>To provide temporary storage of stormwater runoff in highly permeable soils</p> Signup and view all the answers

    What are grass swales used for?

    <p>To slow down and partially infiltrate stormwater runoff</p> Signup and view all the answers

    What is the main purpose of water purification?

    <p>To remove undesirable chemicals, biological contaminants, suspended solids and gases from contaminated water</p> Signup and view all the answers

    What is the purpose of pre-chlorination in water treatment plants?

    <p>To minimize the growth of fouling organisms</p> Signup and view all the answers

    Where should the sedimentation basin ideally be located in relation to the flocculation basin?

    <p>Close to the flocculation basin</p> Signup and view all the answers

    What type of filters are used when there is sufficient land and space available in a water treatment plant?

    <p>Slow sand filters</p> Signup and view all the answers

    Which disinfection method uses polymer membranes with microscopic pores to filter out dissolved substances?

    <p>Ultrafiltration membranes</p> Signup and view all the answers

    What makes chlorine dioxide a faster-acting disinfectant than elemental chlorine?

    <p>It provides a powerful oxidizing agent</p> Signup and view all the answers

    Which compound is described as an unstable molecule that readily gives up oxygen, acting as a powerful oxidizing agent?

    <p>Ozone</p> Signup and view all the answers

    What does hydrology study?

    <p>Properties of the waters of the earth</p> Signup and view all the answers

    Why is groundwater often preferred over surface water for water supply?

    <p>Groundwater is less vulnerable to pollution</p> Signup and view all the answers

    What is the primary purpose of retention ponds?

    <p>To improve water quality from stormwater flows</p> Signup and view all the answers

    What is the main function of On-site Stormwater Detention (OSD)?

    <p>To collect and store rainwater temporarily</p> Signup and view all the answers

    Which urban water management technique provides benefits of conserving potable water and reducing stormwater runoff?

    <p>Green roofs</p> Signup and view all the answers

    What do constructed wetlands primarily aim to do?

    <p>Improve water quality from stormwater flows</p> Signup and view all the answers

    What is the most thorough method of large-scale water purification available?

    <p>Reverse osmosis</p> Signup and view all the answers

    What is the purpose of using iron in water treatment?

    <p>To remove arsenic from water</p> Signup and view all the answers

    What is the key characteristic of the direct contact membrane distillation (DCMD) process?

    <p>It uses heated seawater passed along a hydrophobic polymer membrane</p> Signup and view all the answers

    What is the main purpose of the gas hydrate crystals centrifuge method?

    <p>To form gas hydrate crystals from a mixture of carbon dioxide (or other low molecular weight gas) and contaminated water</p> Signup and view all the answers

    What is the key difference between reverse osmosis and desalination?

    <p>Reverse osmosis is a type of desalination process</p> Signup and view all the answers

    What is the purpose of in-situ chemical oxidation (ISCO) in water treatment?

    <p>To destroy chemical contaminants in soil or groundwater</p> Signup and view all the answers

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