Abstract:
Treatment of landfill leachate is the challenge of all developing countries around the
world in present day’s for environmental scientists because direct impact of
environmental protection cost is unaffordable to those developing countries.
However, intangible benefits of such treatment, creates demand for better
techniques. Due to this research is needed toward economic means of protecting the
environment. The effort made in this research into the treatment of landfill leachate
is a step towards this goal.
This work is the study of analysis Leachate Pollution Index (LPI) of 15 parameters
and adsorption combined with physico-chemical method to treat landfill leachate.
Treatment of landfill leachate by physico chemical methods with lime, air stripping,
chemical coagulation does not comply with the discharge standards set by DoE on
ECR, 97. Use of adsorption process with GAC (Granular Activated Carbon) has been
proven to improve the leachate treatment efficiency.
At present there is only biological treatment process in Matuail Landfill site. Recent
studies have shown that only biological treatment at Matuail landfill leachate is not
sustainable to meet the discharge standard to environment. It is very urgent to take
some steps to encounter the problem of ground water pollution with a convenient
option. The aim of this study is to analyze a suitable treatment method for landfill
leachate in a cost effective manner.
This study also focuses on quantifying the leachate contamination potential on a
comparative scale by LPI and the efficiency of adsorption by GAC. Whereas LPI
shows that chemical treatment only is not effective. Efficiency of the used treatment
process in terms of COD, BOD, NH3-N, heavy metals removals from leachate is
mainly studied.
Analysis of LPI at different treatment stage and discharge standards provided by DoE
on ECR, 97 also carried out. The LPI at different treatment stages are 22.277(Raw
Sample), 20.435 (Air Stripping), 13.292 (Alum Coagulation), 5.527 (GAC
Adsorption). Those results are showing that pollution load is declining.
