EFFECT OF DUMPSITE LEACHATE ON THE PHYSIOCHEMICAL PROPERTIES OF SOIL SAMPLE FROM ALACHARA, MGBOWO, AWGU LOCAL GOVERNMENT AREA, ENUGU STATE
Abstract
This research investigated effect of dumpsite leachate on the physiochemical properties of
soil at Alachala Mgbowo: Five vertical electrical soundings (VES) were conducted using the
Schlumberger configuration and also five horizontal profiling were done using the Wenner
configuration. The field data were acquired using ABEM tarrameter SAS300C,and
processed using the IP TWO WAY software. The results showed that the area is composed of
sandstone, clay, laterite, sandy clay, and sand. From careful analysis and interpretation of
the processed data it was observed that contaminated zones have low resistivity (high
conductivity). Strikingly, areas of low resistivity such as 21.9Ωm and others with high
resistivity up to greater than 1823 Ωm do exist. The results showed that groundwater around
this landfill contaminated area contains highly conductive leachates like sulphur, methane,
ammonia gas at depths> 26 m. This indicates that the study area is not a good aquifer zone.
It is therefore appropriate to recommend as follows; that solid dumpsite at the landfill
contained materials with high heavy metal content; hence, adequate refuse disposal
mechanism should be put in place to reduce the high acidic content. Sorting wastes into
biodegradable and non-biodegradable ones before disposal should be encouraged for
maximum soil productivity.
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