The process can be used to solve the problem of the ratio between BOD5 and COD in Leachate difficult to treatment with biological process, by increasing the ratio BOD5: COD is equal to 69.64, 54.11, 49.82 and 33.38%, the ratio of BOD5. : COD 50: 320, 80: 640, 110: 720 and 140: 960 respectively.