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Characteristics of Leachate Quality in Large-scale Semi-aerobic Landfill Site

Jingjing Liu

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Abstract

In order to further study the applicability of semi-aerobic landfill,three large-scale semi-aerobic landfill units(10 m×10 m×5 m) were constructed at the Chang'an Landfill Site of Chengdu City.The pH,VFA,COD,BOD5 and NH+4-N of the leachate were analyzed.The results show that the degradation of COD and BOD5 is effective.After 742,704 and 697 days,the COD removal rate of the three landfill units is 94.0%,98.0% and 96.9%;the removal rate of BOD5 is 99.4%,99.7% and 99.6% respectively.However,the degradation effect of NH+4-N is not apparent because of small diameter of the collection pipe.Thus,the diameter of collection pipe should be adjusted according to the scale of landfill site.

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What this paper is about

In order to further study the applicability of semi-aerobic landfill,three large-scale semi-aerobic landfill units(10 m×10 m×5 m) were constructed at the Chang'an Landfill Site of Chengdu City.The pH,VFA,COD,BOD5 and NH+4-N of the leachate were analyzed.The results show that the degradation of COD and BOD5 is effective.After 742,704 and 697 days,the COD removal rate of the three landfill units is 94.0%,98.0% and 96.9%;the removal rate of BOD5 is 99.4%,99.7% and 99.6% respectively.However,the degradation effect of NH+4-N is not apparent because of small diameter of the collection pipe.Thus,the diameter of collection pipe should be adjusted according to the scale of landfill site.

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Available abstract

In order to further study the applicability of semi-aerobic landfill,three large-scale semi-aerobic landfill units(10 m×10 m×5 m) were constructed at the Chang'an Landfill Site of Chengdu City.The pH,VFA,COD,BOD5 and NH+4-N of the leachate were analyzed.The results show that the degradation of COD and BOD5 is effective.After 742,704 and 697 days,the COD removal rate of the three landfill units is 94.0%,98.0% and 96.9%;the removal rate of BOD5 is 99.4%,99.7% and 99.6% respectively.However,the degradation effect of NH+4-N is not apparent because of small diameter of the collection pipe.Thus,the diameter of collection pipe should be adjusted according to the scale of landfill site.

Key concepts: Leachate, Environmental science, Environmental engineering, Degradation (telecommunications), Waste management, Environmental chemistry, Chemistry, Engineering

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