Origin composition Water rainfall Decomposition >An important contributor to the >Some liquids exist already before water generation of leachate leakage in the landfill:inside garbage,food products and chemical waste. >Goes through the landfill and collects contaminants. Decomposition of material produces "Contaminants are leached from solid some water and a wide range of additional wastes” materials:methane,carbon dioxide,acids, -Leaching of inherent soluble materials in sugars,iron,heavy metals,pesticides,etc. the wastes -Leaching of soluble products of chemical >They produce a small quantity of reactions created by decomposition leachate by themselves,which,will be -Washout of fines and colloids collected by water,which,in turn,creates further leachate. >Aids bacteria in the process of decomposition:When organic matter decomposes it needs oxygen.Adding water to wastes makes the process faster.Water rainfall Decomposition  An important contributor to the generation of leachate  Goes through the landfill and collects contaminants. “Contaminants are leached from solid wastes” ‐Leaching of inherent soluble materials in the wastes ‐Leaching of soluble products of chemical reactions created by decomposition ‐Washout of fines and colloids  Aids bacteria in the process of decomposition: When organic matter decomposes it needs oxygen. Adding water to wastes makes the process faster.  Some liquids exist already before water leakage in the landfill: inside garbage, food products and chemical waste.  Decomposition of material produces some water and a wide range of additional materials: methane, carbon dioxide, acids, sugars, iron, heavy metals, pesticides, etc.  They produce a small quantity of leachate by themselves, which, will be collected by water, which, in turn, creates further leachate. Origin & composition