Pilot study on vertical deep emission parameters EC, N and Ni of Agh-ghala landfill leachate in soil columns with different texture

Document Type : Complete scientific research article

Authors

Abstract

Background: Evolution of fate, transfer, distribution and transportation of pollution waste liquid (leachate), is one of the most important problems in urban community and environment. On the other hand, soil has complex biological, physical and chemical properties; therefore, soil characteristics are considered as a natural filtering for much type of pollutants.
Materials and Methods: For this purpose, an experiment in polyethylene columns in the five period over 20 days with in a completely randomized design to evaluate the rate of change of many important parameters such as acidity, salinity, total nitrogen and refined nickel in leachate soil columns, with different textures of soils (loam, clay loam and sandy loam), were implemented. The amount of leachate has been applied, considering the volume of leachate collected from the waste storage in the area of Agh Ghala landfill, with water content calculated based on the rate of 10-year area was considered and in intermittent flood conditions to the soil columns, were added.
Results: The average amount of pH value decreased with time and use more applied leachate anaerobic landfill in all three soil textures; however, this change was especially obvious in clay loam soil. The average quantity of EC in loam soil texture increased, but decreased in other soil textures, therefore, the downward movement in clay loam soils was more intensity than the other soils. The mean values of total nitrogen in the soil drainage in clay loam and loam reduced; however, in sandy loam soils increased. The average change regarding soil nickel values in clay loam decreased and in sandy loam and loam soil texture increased, however providing that there is no statistically significance.
Conclusion: Although the application of latex on the amount of each of the desired parameters (such as nickel in loam and sandy loam, EC in loam and sandy loam soil and total nitrogen in sandy loam) increased in water drainage of leachate anaerobic landfill of Agh ghala, however, soil played an important role to improve the quality of leachate. The results confirmed it when the mean values of salinity and acidity in clay loam and sandy loam soils, nickel in sandy loam soil and total nitrogen in clay loam and loam decreased in output leachate anaerobic landfill than the input. Consequently, it seems the effect of clay loam soil in reducing parameter (Ec, pH, N and Ni) were higher and had more effective role in improve the quality of leachate.

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1.Beena, K.S., and Meril, G. 2010. Contaminant transport from MSW landfill: A case study. Indian geotechnicalconference. Pp: 433-436.
2.Edosomwan, N.L., and Onwumah, B.I.2008. Impact of municipal solid wasteon some soil properties in centralsouthern Nigeria. Ind. J. Agric. Resour.42: 4. 244-251.
3.Hossein Pour, O., Haghnia, Gh.,Alizadeh, A., and Chivalry, Or. 2008.Transport of some elements deep into thesoil after irrigation with raw wastewaterand municipal wastewater continuous
and intermittent flood conditions. J.Soil Water (Agricultural Science andTechnology). 2: 1. 132-117.
4.Hossein Pour, O., Haghnia, Gh.,Alizadeh, A., and Chivalry, Or. Check.2009. The quality of water andwastewater, urban waste water passesthrough soil columns. J. Soil Water,twenty-third year. 3: 2. 56-45.
5.Lubricants, S.A., Savaghebi, Gh., and MirSeyyed Hosseini, H. 2007. Effect ofmunicipal solid waste leachate on somechemical properties and ability to absorbnutrients. P 113-114, In Iranian Soil
Science Congress. 2.
6.Mojiri, A., and Hamidi, A. 2012.Impacts of municipal waste leachateon accumulation of heavy metals insoil and barley. P 1-7, The 4thInternational Engineering ConferenceTowards engineering of 21th century.
7.Page, A.L., Miller, R.H., and Keeney,D.R. 1982. Methods of soil analysis. Part2. Chemical and microbiologicalproperties. American Society ofAgronomy. InSoil Science Society of
America (Vol. 1159).
8.Snakin, V.V., Prisyazhanaya, A.A., andKovasc-Lang, E. 2001. Soil liquid phasecomposition. Elsevier Science B.V.,Amsterdam, the Netherlands. 88p.