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Water Quality Monitoring

Water Quality Monitoring. Nush , Mai and Vandy. Content. Mining & Water Quality Deforestation & Water Quality Conclusion & Recommendation. Mercury and Cyanide from Gold Mining. Used of Mercury and Cyanide in Gold Mining.

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Water Quality Monitoring

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  1. Water Quality Monitoring Nush, Mai and Vandy

  2. Content Mining & Water Quality Deforestation & Water Quality Conclusion & Recommendation

  3. Mercury and Cyanide from Gold Mining

  4. Used of Mercury and Cyanide in Gold Mining • Gold will dissolve in liquid mercury and this process was extensively used for recovery of gold from ground area • Cyanide solutions used to dissolve and extract gold • Mercury and Cyanide often eroded into streams or were deposited directly into streams • Mercury and Cyanide is likewise harmful to wildlife such as mammals, birds, and fish. • Biomagnifications

  5. Mercury and Cyanide Legacy from Historic Mines • Elevated concentrations of mercury and cyanide in sediments • Elevated concentrations of mercury and cyanide in fish, birds and other wildlife • Restrictions on the amount of fish that should be consumed by humans

  6. Toxic Issues with Mercury and Cyanide • Neurotoxicity • Birth defects • Kidney function

  7. Byproduct Mercury Production The Chemistry Au + O2 + CN- Au(CN)2- (water soluble) Hg + O2 + CN- Hg(CN)2 + Hg(CN)42- (water soluble) Both the gold and mercury cyanide complexes are trapped on carbon and recovered during processing

  8. How is Byproduct effected to human health • Biomagnifications in aquatic life to human • Release to ground water • Evaporated to the atmosphere

  9. How is Byproduct Managed • Sold or transferred to three primary mercury recyclers • Management and transfer is conducted in a safe and reliable manner

  10. The Cause of harmful water quality Logging Deforestation Plantation

  11. Impacts of Deforestation Less water and Fish in dry season

  12. Water Quality? F E G

  13. Conclusion - WQ still questionable: Lack of equipment & Instruments - Long term effect unidentified: recovery plan after the project completion-

  14. Recommendations • More mercury and cyanide should be required for water quality monitoring. • Should cover the bottom of the reservoir pond by plastic or set up the proper pond to reduce the chance that Mercury and Cyanide will be release to ground water • Do not allow people to do fishing and eat any aquatic life from that pond • Try to reuse that water again in the processing

  15. Recommendations • Law enforcement to combat with illegal logging • Discourage shifting cultivation • Provide seeding and technical support to the marginalized • Ground and surface water check must be implementing systematic • Raising awareness on forestation among children • Providing equipment and technical supports • Provide marketable seeds/stem

  16. Any questions?

  17. Thank you!

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