Statistical Modeling of Municipal Solid Waste Settlement from a Lysimeter

C.L. Araújo Neto, B.M.A. Nóbrega, R.B.A. Sousa, M.C. Melo, W. Paiva, V.E.D. Monteiro

Article

Soils and Rocks, São Paulo, 40(1): 51-59, January-April, 2017 | PDF


Abstract

The sanitary landfill settlement prediction is an important tool for an integrated waste management system once it allows the evaluation of the sanitary landfill useful life and assists in the development of planning actions. Several settlement models have been used as an attempt to estimate the waste volume reduction over time. However, there are few models that consider the waste biodegradation processes. The objective of this paper is to build a simple linear regression model to determine the settlements that took place over time in a lysimeter filled with municipal solid waste from the city of Campina Grande, State of Paraíba, Brazil. The lysimeter was built in the Environmental Geotechnics Group’s experimental field which is located at the Federal University of Campina Grande’s main campus. For the settlement model development, the municipal solid waste settlement from a lysimeter was monitored during 1309 days. It was observed that in the interquartile range, data exhibited a trend of linearity, so this monitoring time was selected in order to develop the model. Through the tests carried out, it can be considered that the developed model presents significant statistical parameters to estimate the waste settlement. Such model can be applied for the estimation of settlement from sanitary landfills with similar features to the ones used in this model.


Submitted on August 18, 2016; Final Acceptance on March 13, 2017; Discussion open until August 31, 2017.