Abstract:
The old Kukot Sanitary landfill which covers about 54,600 squaremeters received both domestic and industrial solid wastes fromsurrounding communities. The landfill thickness is about 13meters. The total volume of buried wastes is approximately480,460 cubic meters. The results from hydrogeology surveyshow a clay layer and a find sand layer which is the Bangkokaquifer laying beneath the landfill at the depth of 13 to 22 and 22to 28 meters, respectively. From water analysis, theconcentrations of copper, lead, and cadmium in both leachate and groundwater in Bangkok aquifer under the landfill site exceed theWater Quality Standards. The results from X-ray fluorescencereveal that the accumulation of heavy metals in clay layer beneaththe landfill bottom decreased with depth from 10 to 52, 17 to 48, 15 to 32,0.10 to 0.66, 20 to 120, 5 to 97 milligram per kilogram for nickel, copper, lead, cadmium,chromium, and zinc, respectively. Additionally, certain volatile organic compounds which are notdetected in found in groundwater such as toluene, xylene, TCE, and PCE were also detected insignificant amounts in the groundwater beneath the site which confirms the contamination ofleachate into the groundwater at this landfill site.