Leachate Generation from Landfill Lysimeter using Different Types of Soil Cover

Authors: S. Karnchanawong, P. Yongpisalpop

Abstract:

The objectives of this study are to determine the effects of soil cover type on characteristics of leachates generated from landfill lysimeters. Four lysimeters with diameter and height of 0.15 and 3.00 m, respectively, were prepared. Three lysimeters were filled with municipal waste and three different cover soil types i.e. sandy loam soil, silty loam soil and clay soil while another lysimeter was filled solely with municipal waste. The study was conducted in the rainy season. Leachate quantities were measured every day and leachate characteristics were determined once a week. The cumulative leachate quantity from the lysimeter filled solely with municipal waste was found to be around 27% higher than the lysimeters using cover soils. There were no any differences of the cumulative leachate amounts generated from the lysimeters using three types of soils. The comparison of the total mass of pollutants generated from all lysimeters showed that the lysimeter filled solely with municipal waste generated the maximum quantities of pollutants. Among the lysimeters using different types of soils, the lysimeter using sandy loam soil generated the lowest amount of most of pollutants, compared with the lysimeters using silty loam and clay soils. It can be concluded that in term of pollutant attenuation in the leachate, a sandy loam is the most suitable soil to be used as a cover soil in the landfill.

Keywords: cover soil, leachate, sandy loam soil, silty loam soil, clay soil.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1072084

References:

[1] PCD (Pollution Control Department), (2006) Ministry of Science and Environment, Solid waste management. http://www.pcd.go.th/ infoserv/ waste_garbage.htm. (5 November 2006).
[2] Chiara, D. J., et al. (1984), Sanitary landfill. Time Saver Standard for Site Planning. McGraw-Hill, New York: 146-160.
[3] Karnchanawong, S., Ikeguchi, T., Karnchanawong S. and Koottatep, S., (1995), "Characteristics of leachate produced from simulation of landfill in a tropical country", Wat. Sci. Tech., 31 (9), pp.119-127.
[4] Karnchanawong, S., Sonklin, W., Kladprasert, S. and Karnchanawong, S., (2004), "Effects of multiple batch-fed waste filling and season on quantity and characteristics of leachate generated from sanitary landfill", Proceedings of the APLAS 2004, Seoul, 24-28 September.
[5] ASTM, (1989), American Society for Testing and Materials, Annual Book of ASTM Standards, Section 4, Construction, Vol. 04.08, Soil and Rock Building Stones; Geotextiles, Philadelphia, Pa.
[6] JICA and CMU, (1992), Report of Department of the Appropriate Technology as a Primary Health Care for Human Waste Treatment and Disposal in Northern Thailand, Chiang Mai University, Ministry of Health and welfare and JICA.
[7] Qasim, S.R. and Chiang, W. (1994), Sanitary Landfill Leachate : Generation, Control and Treatment, USA : Technomic Publishing Company, Inc.
[8] PCD (Pollution Control Department), (2006) Ministry of Science and Environment, Solid waste characteristics OF Chiang Mai municipality. http://www.pcd.go.th/info_serv/waste_municip.html. (5 November 2006).
[9] APHA, AWWA and WPCF, (1995), Standard Methods for Examination of Water and Wastewater, 19th ed., New York: American Public Health Association Inc.
[10] Crites, R.W., Reed, S.C. and Bastian, R.K. (2000), Land Treatment Systems for Municipal and Industrial Waste. New York: 65-87
[11] Tchobanoglous, G., Theisen, H., and Vigil, S. (1993), Integrated Solid Waste Management: Engineering principles and Management Issues. Chap. 11. New York: Mc Graw Hill : 361-540.