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Day 4 Recap

Quiz by Padmasini Srivathsan

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12 questions
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  • Q1

     FBC effectively removes NH3 from the  waste water 

    true
    false
    True or False
    20s
  • Q2

    Usually, the  moisture in the CaF2sludge that can be achievable using Filter press <40%

    true
    false
    True or False
    20s
  • Q3

    What is the HFW system operating pH suggested to avoid CaCO3 formation?

         

      5-6

       

     7.5-8.5

      10.5-12

    pH doesn't matter 

    20s
  • Q4

    what are the chemicals required to remove fluoride (<10 ppm) from HFW system?

                       

      Ca (OH)2, CaCO3

      NaOH, CaCl2

      Ca (OH)2, CaCL2, Alum

    None of the above  

    20s
  • Q5

     What is the pH suggested for crystal formation in the FBC?

                                                           

         4-6

    0-2

     

     

    9.5-10.5

    0-14

    20s
  • Q6

    Which method is commonly used in water treatment to remove pathogens?

       Aeration

     Ultra Filtration

     UV disinfection

    None

    20s
  • Q7

    CFRO can be proposed to replace the following in water treatment.

    Ultrafiltration

    Dissolved Gas floatation

    Reverse Osmosis 

    None 

    20s
  • Q8

    In the CGE system, Freshwater comes out from 

    Humidifier

    Dehumidifier

    Both A& B

    Pre-heater

    20s
  • Q9

    What is the primary purpose of aeration in water treatment?

     Reduce DO level

     Increase O2 levels

     Floatation purpose

      All the above

    20s
  • Q10

    Ultrafiltrationcan help remove particles and microorganisms from water

    true
    false
    True or False
    20s
  • Q11

    Fluoride from the feed water can be removed using 

      

     Addition of Lime & CaCl2

     Ion Exchange

     All the above

     Fluidized Bed Crystallization

    30s
  • Q12

    Air blower capacity does not affect the operation of CGE 

    false
    true
    True or False
    20s

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