This research studied the biochemical methane potential from leachate in stabilization pond, open dumping area, Sainoi Nonthaburi Province. Leachate samples were collected from 4 stabilization ponds. The finding found that organic substance (COD) from leachate can be treated with stabilization ponds. The milligrams of COD removal were decrease from 3,700 mg COD L-1 to 825 mg COD L-1, that COD removal efficiency 77%. Leachate is complex structure and non pre-treatment, so it was not easily to degradable with microorganisms. Therefore, organic substance (COD) treatment quite low efficiency. In term of biochemical methane potential from stabilization ponds were obtained 0.30, 0.25, 0.19 and 0.14 L CH4 g-1 COD removed, respectively. Thus, stabilization ponds can be simultaneous removal organic substance (COD), nitrogen compound in leachate and methane production with low cost of construction and operation.
Keywords : Stabilization ponds, Biochemical Methane Potential, Leachate, Natural treatment system