Case Study 2. Ground water with high levels of arsenic, Thailand

Case Study 2. Ground water with high levels of arsenic, Thailand

Location: Kamphaeng Saen and Kanchanaburi, Thailand

> The two treatment sites were a remote village in the mountains and a hospital compound on the outskirts of Bangkok.

> Raw water was taken from the ground (existing bores) and from existing mining ponds in the surrounding areas from Tin mines.

> The raw water contained high levels of arsenic (between 0.38mg/l and 0.4857mg/l).

> Treated water samples depicted very strong and successful results with all treated water samples showing ‘non-detectable’ levels of arsenic at       > laboratory method resolution of 0.0001mg/l -an extremely difficult result to achieve by any other technology

> During a feedback session at the Kamphaeng Saen site, staff from the hospital said that 8 other water treatment systems were previously tested for arsenic removal on this site without success.

> Two chemists from the Department of Groundwater of Thailand witnessed the field testing and collected the water samples to be analysed.

> Samples were analyzed by the Department of Science Service (a government laboratory).