Leachate Characterization and Assessment of Groundwater Pollution Near Municipal Solid Waste Landfill Site

Abstract

Leachate and groundwater samples were collected from Gazipur landfill-site and its adjacent area to study the possible impact of leachate percolation on groundwater quality. Concentration of various physico-chemical parameters including heavy metal (Cd, Cr, Cu, Fe, Ni, Pb and Zn) and microbiological parameters (total coliform (TC) and faecal coliform (FC)) were determined in groundwater and leachate samples. The moderately high concentrations of Cl-, NO3(-), SO4(2-), NH4(+), Phenol, Fe, Zn and COD in groundwater, likely indicate that groundwater quality is being significantly affected by leachate percolation. Further they proved to be as tracers for groundwater contamination. The effect of depth and distance of the well from the pollution source was also investigated. The presence of TC and FC in groundwater warns for the groundwater quality and thus renders the associated aquifer unreliable for domestic water supply and other uses. Although some remedial measures are suggested to reduce further groundwater contamination via leachate percolation, the present study demand for the proper management of waste in Delhi.

Evaluating pollution potential of leachate from landfill site, from the Pune metropolitan city and its impact on shallow basaltic aquifers

“…Similar to physicochemical parameters discussed above, all wells around the dumping site exhibit (Mor et al 2006). Despite few inputs from agricultural activities, the high concentration of K + has been reported to be an indication of the leachate effect (Eillas 1980).…”

“…Anions The high amount of chloride (Table 1) in leachate is due to mixing of domestic waste (Mor et al 2006). The possible anthropogenic sources of chloride are kitchen wastes from households, restaurants, and hotels.…”

“…The concentration is considerably high in the well DW8; values ranged from 435.6 mg/l for postmonsoon to 4,400 mg/l for pre-monsoon. The high chloride content in groundwater is from pollution sources such as domestic effluents, fertilizers, septic tanks, and leachates (Mor et al 2006). Increase in chloride level is injurious to people suffering from diseases of heart and kidney (WHO 2002).…”

“…Dispersal of leachates poses potential threats to local ecosystems especially to soils and groundwaters (Jorstad et al 2004). The composition of leachate depends upon the nature of solid waste buried, chemical and biochemical processes responsible for the decomposition of waste materials, and water content in total waste (Fatta et al 1999;Mor et al 2006).…”

Assessment of heavy metal contamination in soil due to leachate migration from an open dumping site

“…0372, 0.546-2.6886, 0.1605-1.7962, and 0.7655-5.1485 mg/l, respectively, for the collected leachate samples. The high level of Pb (5.1485 mg/l) in the leachate samples indicates the disposal of Pb batteries, chemicals for photograph processing, Pb-based paints and pipes at the landfill site (Moturi et al 2004;Mor et al 2005). Based on the average concentration, the heavy metal concentration in the collected leachate sample was found in the following order:…”