Leachate from landfills is often made up of unwanted chemicals like organic and inorganic pollutants and is distinguished by having a high chemical and biological oxygen demand. Leachate from landfills can vary based on the volume and age of the contents, the rate of decomposition, the climate, and hydrological conditions. The major objective of this work was to use natural, inexpensive accelerator additives, such as, calcium chloride and bentonite to speed up the chemical treatment process using alum coagulant. Initial characteristics of leachate were tested and found out to be very high. With a steady dose of alum, the accelerator chemicals improved the effectiveness of the chemical treatment. The removal efficiencies were found out for conductivity, turbidity and COD and later comparison was made between the efficiencies of calcium chloride and bentonite. The best removal efficiency for alum was found at 90mg/l and this is taken as constant for further treatment with different doses of bentonite and calcium chloride. The removal efficiencies for turbidity, conductivity and COD at doses of 10, 20, 50, 90, and 100mg/l of bentonite for where found out be more than that of calcium chloride with same doses.