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Solid Waste Leachate Research Paper

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In the literature of the past few years, much effort has been made in the domain of municipal solid waste leachate. The effort focuses either on the minimization of leachate production by proper management or on the treatment of leachate by various techniques.

3.1 LEACHATE DEFINITION
Leachate is a liquid that is produced when water or another liquid comes in contact with solid waste. It is a contaminated liquid that contains a number of dissolved and suspended materials. (CPHEEO, 2000)

The dumped solid wastes receive water which moves through the waste deposition and the by-products of decomposition move into it. Thus, the liquid containing innumerable organic and inorganic compounds is called 'leachate'. (Nagarajan et al, 2012)
Hence, leachate is a coloured liquid containing major ions like Ca, Mg, etc., trace metals, a no. of organic and inorganic compounds and microbiological components which is produced when water or another liquid comes into contact with waste in a landfill. (Clark, 1996)
3.2 LEACHATE FORMATION
Biodegradable waste constituents are converted into intermediates and products; primarily by initial hydrolysis to …show more content…

This observed decrease in the soil pH in MWL treatments are attributed to the acidifying effect of MWL. Some investigations showed that when the MWL is added to the soil, it caused a decrease of soil pH at first, but after a while it had no significantly effect on soil pH; and soil pH returned to its original state. MWL application caused an increase of electrical conductivity and available potassium in soil. The higher concentration of cations such as Na and K in MWL led to an increase in EC and exchangeable Na and K in soils plus MWL. MWL application caused an increase of total nitrogen and phosphorus in soil. Increasing the total nitrogen and phosphorus of soil plus MWL can be attributed to different forms of nitrogen and phosphorus in the MWL. (Kiayee,

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