Leachate is derived from the decomposition process of landfill waste that collects at the bottom of the landfill which contains high organic contaminants, ammonia, nitrate, nitrite, and lead which can interfere with human health, pollute the environment, and surrounding aquatic biota. Aerobic Sequencing Batch Reactor (SBR) is one of the activated sludge methods that can be used to treat leachat…