Waste stabilization mechanism by a recirculatory s

Authors: O Hirata Y Matsufuji A Tachifuji R Yanase

Publish Date: 2011/12/28

Volume: 14, Issue: 1, Pages: 47-51

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Abstract

The main purpose of this research is to clarify and compare the mechanism of waste stabilization by a recirculatory semiaerobic landfill with the aeration system Our research is proposing the semiaerobic landfill system for developing countries because of the simple and lowcost technology for the final disposal Moreover this system with leachate recirculation can be a more effective system for waste stabilization because of the improvement of leachate quality as an organic pollutant and also nitrogen removal In this research five different systems of landfill Ae aerobic An anaerobic Se semiaerobic SeR recirculatory semiaerobic landfill and SeRA recirculatory semiaerobic landfill with aeration system are compared with lysimeters which are 1 m high with a diameter of 03 m The results of the leachate quality shows that the leachate treatment effect of the SeRA system can be observed to be as high as the Ae system To determine the mechanism of this process all lysimeters are dismantled after 1100 days in the experimental period and the waste composition the dissolution test the mass balance of carbon and nitrogen the determination of bacterial counts etc were analyzed In this research it was proven that the SeRA system has an optimal leachate treatment effect that is the same as the Ae system And from the results of the mass balance of carbon and nitrogen the SeR and SeRA systems show higher waste stabilization effectiveness and nitrogen removal than the other systems Moreover the number of the aerobic bacteria can be observed to be higher in the SeR and SeRA systems To determine these results the waste stabilization mechanism is considered by the results of leachate quality the mass balance of carbon and nitrogen and also the bacterial numbers

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