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picture1_Water Purification Methods Pdf 87160 | Wpm Item Download 2022-09-14 17-53-11


 135x       Filetype PDF       File size 0.37 MB       Source: www.travelhealth.gov.hk


File: Water Purification Methods Pdf 87160 | Wpm Item Download 2022-09-14 17-53-11
what are the methods used water to purify water 1 boiling is by far the most reliable method boiled purification vigorously for 1 minute and allowed to cool to room ...

icon picture PDF Filetype PDF | Posted on 14 Sep 2022 | 3 years ago
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           What are the methods used                                                                              Water  
           to purify water?
            1 Boiling is by far the most reliable method (boiled                                    Purification  
                 vigorously for 1 minute and allowed to cool to room
                 temperature).                                                                             Methods  
            2 Chemical purifiers such as tincture of iodine 
                 (2% solution) can be used.
                 •Add 5 drops to 1 litre of clear water and 
                   wait for 30 minutes before using.
                 •For very cold or cloudy water, add 10 drops to 1 litre of
                   water and wait for several hours before using.
                 •To remove the iodine taste and odor, add 50 mg of 
                   vitamin C, 30 minutes after 
                   adding iodine.
            3 Many types of portable water filters available, 
                 with varying degrees of effectiveness, can be 
                 used together with chemical purification.
    Designed by the Information Services Department  
    Printed by the Printing Department
    Hong Kong Special Administrative Region Government
                                                                                 How do you prevent 
         Risks from drink                                                        water­borne diseases?
          1 Water pollution is usually                                            1 Drink beverages made only
              caused by                                                               with boiled water.
              human and 
              animal                                                              2 Canned or commercially bottled
              excrement.                                                              carbonated water, beer
          2 Most package tours are                                                    and wine are safe.
              arranged to hotels where clean tap water is                         3 Ice cubes should be
              available but special care should still be taken when                   considered potentially contaminated and best
              drinking out.                                                           avoided.
          3 Among the more common infections that travellers                                     4 Don't drink tap water.
              may acquire from contaminated water are 
              shigellosis, salmonellosis, campylobacteriosis, 
              amoebic dysentery, giardiasis, cryptosporidiosis,                                  5 Chlorinated water can still be unsafe.
              typhoid fever, cholera, infections caused by                  X
              Escherichia coli, hepatitis A, rotavirus, Norwalk-like                             6 Bring appropriate equipment for
              viruses, a variety of protozoan and helminthic 
              parasites.                                                                             water purification.
                                                                                 How do you prevent 
         Risks from drink                                                        water­borne diseases? 
          1 Water pollution is usually                                            1 Drink beverages made only  
              caused by                                                              with boiled water.  
              human and
              animal                                                              2  Canned or commercially bottled  
              excrement.                                                             carbonated water, beer  
          2 Most package tours are                                                   and wine are safe.  
              arranged to hotels where clean tap water is                         3  Ice cubes should be  
              available but special care should still be taken when                  considered potentially contaminated and best  
              drinking out.                                                          avoided.  
          3 Among the more common infections that travellers                                     4 Don't drink tap water. 
              may acquire from contaminated water are
              shigellosis, salmonellosis, campylobacteriosis,
              amoebic dysentery, giardiasis, cryptosporidiosis,                                  5 Chlorinated water can still be unsafe. 
              typhoid fever, cholera, infections caused by                  X 
              Escherichia coli, hepatitis A, rotavirus, Norwalk-like                             6 Bring appropriate equipment for 
              viruses, a variety of protozoan and helminthic
              parasites.                                                                             water purification. 
           What are the methods used                                                                              Water 
           to purify water? 
            1 Boiling is by far the most reliable method (boiled                                    Purification 
                 vigorously for 1 minute and allowed to cool to room 
                 temperature).                                                                             Methods
            2 Chemical purifiers such as tincture of iodine 
                 (2% solution) can be used. 
                 • Add 5 drops to 1 litre of clear water and 
                   wait for 30 minutes before using. 
                 • For very cold or cloudy water, add 10 drops to 1 litre of 
                   water and wait for several hours before using. 
                 • To remove the iodine taste and odor, add 50 mg of 
                   vitamin C, 30 minutes after 
                   adding iodine. 
            3 Many types of portable water filters available, 
                 with varying degrees of effectiveness, can be 
                 used together with chemical purification. 
    Designed by the Information Services Department 
    Printed by the Printing Department 
    Hong Kong Special Administrative Region Government 
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...What are the methods used water to purify boiling is by far most reliable method boiled purification vigorously for minute and allowed cool room temperature chemical purifiers such as tincture of iodine solution can be add drops litre clear wait minutes before using very cold or cloudy several hours remove taste odor mg vitamin c after adding many types portable filters available with varying degrees effectiveness together designed information services department printed printing hong kong special administrative region government how do you prevent risks from drink borne diseases pollution usually beverages made only caused human animal canned commercially bottled excrement carbonated beer package tours wine safe arranged hotels where clean tap ice cubes should but care still taken when considered potentially contaminated best drinking out avoided among more common infections that travellers don t may acquire shigellosis salmonellosis campylobacteriosis amoebic dysentery giardiasis cry...

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