Tratamiento de lixiviados del relleno sanitario del cantón Tena provincia de Napo mediante reacción fenton y microorganismos eficientes, 2016.

Abstract

The present titling work had as objective to treat the leachates generated in the sanitary landfill of the canton Tena through Fenton Reaction and efficient microorganisms. The initial sample of the leachate was characterized by a physical-chemical analysis, whose parameters to be determined were: biochemical oxygen demand (BOD5), chemical oxygen demand (COD) and ammoniacal nitrogen (N-NH3); giving an initial value of 8350 mg/L of BOD5, 15400 mg/L of COD and 875 mg/L of N- NH3. The Fenton technique consisting of the oxidation of organic matter between ferrous sulfate (FeSO4) and hydrogen peroxide (H2O2) in acid medium was used as a pretreatment. Doses of 200, 400, 600 and 800 grams of FeSO4 and milliliters of H2 O2 respectively were applied with a reaction time of 6 days at pH 4 and samples were taken a teach dose applied for further analysis. At the end of the Fenton technique the biodegradability index was calculated, which gave a value of 0.32 in order to assert the application of efficient microorganisms (ME). The efficient microorganisms were activated with sugar cane molasses and water, since these are in latency for the period of 7 days. As 200 L of leachate was treated, a dose of 1 ml of activated ME was applied per 1000 ml of leachate, that is to say 200 ml of ME for one month for greater efficiency of the microbial process. Percentages of removal of 84.3 % of BOD5, 74 % of COD and 84 % of N-NH3 were achieved. It was concluded that the techniques used were less expensive and with short removal times. It is recommended that municipalities use these technologies to minimize the pollution generated by leachate.