Abstract—Water is one of the basic human needs and the
country has the main responsibility to confirm their citizens’
provision to safe water. Most of the countries in the world
supply treated water to the country through water treatment
plants. In drinking water treatment plants, solid sludge is
generated at the end of the water treatment process as a waste
product which is now becoming a global problem. In previous
studies, shrinkage was identified as the major problem of
drinking water treatment sludge (DWTS), accrued when use it
as a raw material. This study was conducted to analyze the
performance of both chemical and physical additives, to
identify the possible additive to overcome the shrinkage of
DWTS. In the study eight mixtures were prepared by adding
Styrene Acrylic Binder as the chemical additive and sand and
sugarcane fiber as physical additives separately and together
and volumetric shrinkage of each mix was measured weekly.
According to the results of this study it was concluded as,
shrinkage of DWTS can be reduced by adding physical
additives. Physical additives perform more effectively than
chemical additives in the reduction of shrinkage of DWTS.
Further studies are required to find the optimum mixing ratios
of physical additives to optimize the performances.
Index Terms—Chemical additives, drinking water treatment sludge (DWTS), physical additives, shrinkage.
H. H. Galkanda was with University of Ruhuna, Sri Lanka. She is now with the Department of Civil Engineering, Faculty of Engineering, University of Moratuwa, Sri Lanka (e-mail: firstname.lastname@example.org).
R. U. Halwatura is with the Department of Civil Engineering, Faculty of Engineering, University of Moratuwa, Sri Lanka (e-mail: email@example.com).
Cite: Himahansi H. Galkanda and Rangika U. Halwatura, "Analysis the Performance of Chemical and Physical Additives to Reduce Shrinkage of Drinking Water Treatment Sludge (DWTS)," International Journal of Environmental Science and Development vol. 11, no. 4, pp. 175-179, 2020.Copyright © 2020 by the authors. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).