Water related diseases

4,543 views

Published on

0 Comments
5 Likes
Statistics
Notes
  • Be the first to comment

No Downloads
Views
Total views
4,543
On SlideShare
0
From Embeds
0
Number of Embeds
2
Actions
Shares
0
Downloads
103
Comments
0
Likes
5
Embeds 0
No embeds

No notes for slide

Water related diseases

  1. 1. WATER RELATED DISEASES BRADLEY CLASSIFICATION (1977) A water related disease is one which in some way is related to water or to impurities within waterA. Biological/Specific (water borne- Diseases)B. Non-Infectious/Non Specific water related Diseases
  2. 2. WATER-BORNE DISEASES Also called Biological/Specific Diseases Further classified intoA. Caused by the presence of an Infective agentB. Due to the presence of an Aquatic host
  3. 3. CAUSED BY INFECTIVE AGENTS VIRAL1. Viral Hepatitis A &E2. Poliomyelitis3. Rotavirus Diarrhea BACTERIAL1. Typhoid & Paratyphoid Fevers2. Bacillary Dysentery3. E.Coli Diarrhea4. Cholera
  4. 4. Contnd.---------PROTZOAL• Amebiasis• GiardiasisHELMINTHIC• Roundworm• Threadworm• Hydatid DiseaseLEPTOSPIRAL• Weils Disease
  5. 5. DUE TO THE PRESENCE OF AN AQUATIC HOSTSNAIL• SchistosomiasisCYCLOPS• Guineaworm• Fish tapworm
  6. 6. Non-specific/Non-infectious Water Related DiseasesThese diseases are due to either excess or deficiency of certain chemicals in the water(Chemical Hazards)1. Lead Poisoning2. Endemic Goiter3. Dental Caries/Dental Decay4. Fluorosis5. Infantile Methaemoglobinaemia
  7. 7. Modified BRADLEY Classification Feco-Oral Diseases Water Borne Diseases Water washed Diseases Water Based Diseases Water Related Diseases Water Dispersed Diseases
  8. 8. PURIFICATION OF WATERA. NATURAL METHODS Evaporation & Condensation Storage Sedimentation Oxidation Percolation & Filtration through soil
  9. 9. Contnd.---------B. ARTIFICIAL METHODS1. PHYSICAL METHODS Distillation Boiling2. CHEMICAL METHODS Precipitation Removal of Hardness & Softening Germicides Adsorbents
  10. 10. Contnd.--------3. FILTRATION METHODS ON SMALL SCALE• Pasteur Chamberland Filter• Berkefeld Filter• Meta & Stellar Filter ON LARGE SCALE• Slow Sand Filtration• Rapid Sand Filtration• Desalination

×