Physico-chemical and biological characterization of urban municipal landfi ll leachate
a Department of Civil Engineering, Indian Institute of Science, Bangalore, India,
b Centre for Sustainable Technologies (CST), Indian Institute of Science, Bangalore, India
c Energy and Wetlands Research Group (EWRG), Center for Ecological Sciences (CES), Indian Institute of Science, Bangalore, India
*Corresponding author: cestvr@ces.iisc.ernet.in

SUMMARY AND CONCLUSION

Leachate analysis of Mavallipura landfi ll showed a high concentration of organic and inorganic constituents. Heavy metals concentration was in traces indicating that the waste dumped is predominantly municipal waste. Physico-chemical analysis showed signifi cantly high salinity and alkalinity. Based on BOD5/COD ratio the Mavallipura landfill leachates were found to be medium aged. Elemental analysis revealed the dominance of C followed by O and N compared to other elements indicating abundant organic matter in the samples. A clear distinction between the leachate samples and pond waters was observed through the cluster analysis. Furthermore, the microbiological analysis also revealed a substantial difference between the compositions of microflora in the

samples. High LPI values indicated that leachate generated from landfi ll site are not stabilized and mature, and are still undergoing decomposition and thus have high chances to cross contaminate nearby surface and ground waters. Based on the various analysis performed in the study possible linkages between the leachate and nearby water bodies was observed. Water quality in water bodies was found poor and enriched with ions and nutrients making it unsuitable for any use.

Appendix A . Supplementary data Supplementary data related to this article can be found at http:// dx.doi.org/10.1016/j.envpol.2016.09.002.

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Citation : B.P. Naveen., Durga Madhab Mahapatra, T.G. Sitharam, P.V. Sivapullaiah, T.V. Ramachandra, 2016. Physico-chemical and biological characterization of urban municipal landfill leachate, Environmental Pollution (2016), http://dx.doi.org/10.1016/j.envpol.2016.09.002
* Corresponding Author :
Dr. T.V. Ramachandra
Energy & Wetlands Research Group, Centre for Ecological Sciences, Indian Institute of Science, Bangalore – 560 012, India.
Tel : +91-80-2293 3099/2293 3503 [extn - 107],      Fax : 91-80-23601428 / 23600085 / 23600683 [CES-TVR]
E-mail : cestvr@ces.iisc.ernet.in, energy@ces.iisc.ernet.in,     Web : http://wgbis.ces.iisc.ernet.in/energy, http://ces.iisc.ernet.in/grass