Denitrification capacity of bioreactors filled with refuse at different landfill ages

被引：20

作者：

Chen, Ying-xu ^{[1
,2
]}

Wu, Song-wei ^{[1
]}

Wu, Wei-xiang ^{[2
]}

Sun, Hua ^{[3
]}

Ding, Ying ^{[2
]}

机构：

[1] Zhejiang Univ, Inst Environm Sci & Technol, Hangzhou 310029, Zhejiang, Peoples R China

[2] Key Lab Nonpoint Source Pollut Control, Minist Agr, Hangzhou 310029, Zhejiang, Peoples R China

[3] Zhejiang Prov Key Lab Water Pollut Control & Envi, Hangzhou 310029, Zhejiang, Peoples R China

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2009年 / 172卷 / 01期

关键词：

Bioreactor landfill; Denitrification capacity; Nitrogen removal; Refuse; MUNICIPAL SOLID-WASTE; IN-SITU DENITRIFICATION; NITROGEN REMOVAL; LEACHATE RECIRCULATION; NITRATE; NITRITE; NITRIFICATION; DECOMPOSITION; AMMONIA; SYSTEM;

D O I：

10.1016/j.jhazmat.2009.06.150

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The denitrification capacity of refuse at different landfill ages in bioreactor landfill system was studied. Three reactors filled with 1-year-old refuse (R1), 6-year-old refuse (R6) and 11-year-old refuse (R11), respectively, were operated in the experiment. Nitrate solution (1000 mg NO3--NL-1) was added into each reactor. The results showed that the reactors were all able to consume nitrate. However, 1-year-old refuse in RI had both a higher nitrate reduction rate and concentration of N-2. In addition, vertical differences in nitrate removal along the depth of R1 were observed. The bottom-layer refuse and the middle-layer refuse both showed higher efficiency in nitrate depletion than the top layer. Furthermore, N2O accumulation was found in R11 with the concentration up to 19.3% of the released gas. These results suggested that 1-year-old refuse, which was partly degraded, was more suitable to use as denitrification medium. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：159 / 165

页数：7

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