Environmental Health, Food and Water Contamination Flashcards
What are the steps in water treatment?
Coagulation
Flocculation
Sedimentation
Filtration
Disinfection
What are the water-related diseases that occur in Ghana
Water-borne diseases
Water-washed diseases
Water-based diseases
Water-related insect-vector diseases
Examples of Water-borne diseases
Cholera
Typhoid
Diarrhoeal diseases
Amoebic and bacillary dysentry
Eamples of Water-washed diseases
Scabies
Trachoma
Flea, lice and tick borne diseases
Examples of Water-based diseases
Schistosomiasis
Dracunculiasis
Examples of Water-based diseases
Schistosomiasis
Dracunculiasis (guinea worm disease)
Examples of Water - related insect-vector diseases
Filiariasis
Malaria
Onchocerciasis
Trypanosomiasis
Yellow fever
What are the major causes for the spread of water borne diseases in a community?
Lack of water supply, sanitation and hygiene
Which two diarrhoeal pathogens can cause severe epidemics?
Shigella dysenteriae
Vibrio cholera
Four types of water washed - diseases
Soil-transmitted helminths (eg. Ascaris lumbricoides, Hookworm,
Acute respiratory infections
Skins and eye diseases ( eg. trachoma)
Ring worm (tinea corporis)
What are water-based diseases?
These are diseases caused by parasites found in intermediate organisms living in contaminated water.
What are water-washed diseases?
They are diseases caused by poor personal hygiene and skin and eye contact with contaminated water.
Water borne diseases
They are diseases caused by ingestion of water contaminated by human or animal faeces or urine, which contain pathogenic microorganisms
What is Air Pollution?
It is the introduction of particulate, biological molecules or other harmful materials into the earth’s atmosphere, causing diseases, death to humans, damage to other living organisms such as animals and food crops or to the natural or built environment.
Primary pollutants
Sulphur oxides
Nitrogen oxides
Carbon monoxides
Volatile organic compounds
Particulate matter
Chlorofluorocarbons (CFCs)
Ammonia
