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Waste Manag

Title:		Characterization of a joint recirculation of concentrated leachate and leachate to landfills with a microaerobic bioreactor for leachate treatment
Author(s):		He R; Wei XM; Tian BH; Su Y; Lu YL;
Address:		"Department of Environmental Engineering, Zhejiang University, Hangzhou 310058, China. Electronic address: heruo@zju.edu.cn. Department of Environmental Engineering, Zhejiang University, Hangzhou 310058, China. Hangzhou Foreign Language School, Hangzhou 310023, China"
Journal Title:		Waste Manag
Year:		2015
Volume:		20150829
Issue:
Page Number:		380 - 388
DOI:		10.1016/j.wasman.2015.08.006
ISSN/ISBN:		1879-2456 (Electronic) 0956-053X (Linking)
Abstract:		"With comparison of a traditional landfill, a joint recirculation of concentrated leachate and leachate to landfills with or without a microaerobic reactor for leachate treatment was investigated in this study. The results showed that the joint recirculation of concentrated leachate and leachate with a microaerobic reactor for leachate treatment could not only utilize the microaerobic reactor to buffer the fluctuation of quality and quantity of leachate during landfill stabilization, but also reduce the inhibitory effect of acidic pH and high concentrations of ammonium in recycled liquid on microorganisms and accelerate the degradation of landfilled waste. After 390 days of operation, the discharge of COD and total nitrogen (TN) from the landfill with leachate pretreatment by a microaerobic reactor was 7.4 and 0.9 g, respectively, which accounted for 0.7% and 2.6% of COD, 1.9% and 7.5% of the TN discharge from the landfills without recirculation and directly recirculated with leachate and concentrated leachate, respectively. The degradation of the organic matter and biodegradable matter (BDM) in the landfill reactors could fit well with the first-order kinetics. The highest degradation of the organic matter and BDM was observed in the joint recirculation system with a microaerobic reactor for leachate treatment with the degradation constant of the first-order kinetics of 0.001 and 0.002"
Keywords:		"Aerobiosis Biological Oxygen Demand Analysis *Bioreactors China Fatty Acids, Volatile/analysis Hydrogen-Ion Concentration Kinetics Nitrogen Compounds/analysis *Waste Disposal Facilities Waste Management/*methods Water Pollutants, Chemical/*analysis Concen;"
Notes:		"MedlineHe, Ruo Wei, Xiao-Meng Tian, Bao-Hu Su, Yao Lu, Yu-Lan eng Research Support, Non-U.S. Gov't 2015/09/04 Waste Manag. 2015 Dec; 46:380-8. doi: 10.1016/j.wasman.2015.08.006. Epub 2015 Aug 29"