Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.

Groundwater Pollution of Arsenic

1,864 views

Published on

  • Be the first to comment

Groundwater Pollution of Arsenic

  1. 1. ARSENIC POLLUTION OF GROUNDWATER IN BANGLADESH KIM 3701 KIMIA ALAM SEKITAR
  2. 2. GROUP MEMBERS  Abdul Rahman bin Yusuf UK26406  Zaiimah binti Rozman UK25649  Siti Soleha binti Mustaffa UK24901  Wan Azwira binti Wan Ahmad UK26257  Nurul Syazdiana binti Mohd Zuki UK26258
  3. 3. DEFINITION Groundwater Pollution: The contamination of groundwater by different form of chemicals and synthetic pollutants that reduces the quality of groundwater making it limited for normal use by living beings.
  4. 4. ORGANIC INORGANIC: TOXIC TYPES OF POLLUTANT
  5. 5. ARSENIC 33rd element in Periodic Table. Inorganic toxically metal pollutant. Highest priority contaminant on the priority list of hazardous substances. Refer: http://www.atsdr.cdc.gov/SPL/index.html Known as poison and human carcinogen.
  6. 6. CASE STUDY
  7. 7. CHRONOLOGY of Arsenic Pollution in West Bengal, India Arsenic natural geological is present in local bedrock. The deeper the level of groundwater, the higher the concentration of Arsenic. Using of deep tubewells for water supply and power pump. Using of pesticides, fertilizers in agrochemical field. The Arsenic from pesticides and fertilizers percolated into the ground.
  8. 8. CHRONOLOGY cont.. The deep tubewells continue pulling up the deep Arsenic, therefore the situation became worst. People used the water from the tubewell, unknowingly they were transferring the Arsenic to their body. Epidemiological study was carried out. Water sam-ples were obtained from the tubewells. 0.84 million people exposed to Arsenic, 0.14 million people suffering arsenical skin lesion.
  9. 9. Cause acute and chronic toxicity. Liver and kidney damage. Skin disease such as keratosis (hardening palm and sole), melanosis(hyperpigmentation), blackeni ng of skin. Irritation to skin and mucous membrane. Irreversible circulatory insufficiency. Arsenicosis by drinking arsenic contaminated water which can lead to very painful death. EFFECTS to health
  10. 10. KERATOSIS
  11. 11. EFFECTS to environment Changing of microbiological balance of soil. Change of arable land to barren land due to use of contaminated water. Contamination of water due to leakage of contaminated groundwater.
  12. 12. OVERCOMES Monitoring water quality to detect contamination. Declaring water source protection area. Managing the activities to minimize their impact to environment. Get the alternative water supply to replace the contaminated water.
  13. 13. SUGGESTIONS Use pesticides and fertilizers with care. Keep chemicals and waste safe from rain. Conduct household hazardous wastes collection. --------------------------------------------------------------------- RECOMMENDATION Inform and educates people more about groundwater.
  14. 14. CONCLUSION Arsenic contamination is not peculiar to Bangladesh alone. This is a global problems. The great difference is the degree and velocity of this environmental disaster in Bangladesh for the number of people at risk is higher than other countries. Prevention and awareness is the best way to reduce groundwater pollution. High arsenic concentration are present mostly in shallow groundwater.

×