TY - JOUR
T1 - Performance and bacterial compositions of aged refuse reactors treating mature landfill leachate
AU - Xie, Bing
AU - Xiong, Shunzi
AU - Liang, Shaobo
AU - Hu, Chong
AU - Zhang, Xiaojun
AU - Lu, Jun
PY - 2012/1
Y1 - 2012/1
N2 - Aged landfill leachates become more refractory over time and difficulty to treat. Recently, aged refuse bioreactors show great promise in treating leachates. In this study, aged refuse bioreactors were constructed to simulate landfill leachate degradation process. The characteristics of leachate were: COD cr, ∼2200mg/L; BOD 5, ∼280mg/L; total nitrogen, ∼2030mg/L; and ammonia, ∼1900mg/L. Results showed that bioreactor could remove leachate pollutants effectively at hydraulic loading of 20L/m 3d. The removal rate reduced when hydraulic loading doubled or temperature lowered. Effluent recirculation could alleviate the temperature effect. Combining aged refuse and slag biofilters could treat leachate more efficiently. Pyrosequencing analysis indicated that bacteria from Pseudomonas, Lysobacter, Bacillus and δ-proteobacter, Flexibacteraceae were more abundant in the samples. The Shannon index decreased at lower temperature, while evenness and equitability increased with recirculation. We suggest that filter medium and temperature may be the main factors for shaping bacterial community structure.
AB - Aged landfill leachates become more refractory over time and difficulty to treat. Recently, aged refuse bioreactors show great promise in treating leachates. In this study, aged refuse bioreactors were constructed to simulate landfill leachate degradation process. The characteristics of leachate were: COD cr, ∼2200mg/L; BOD 5, ∼280mg/L; total nitrogen, ∼2030mg/L; and ammonia, ∼1900mg/L. Results showed that bioreactor could remove leachate pollutants effectively at hydraulic loading of 20L/m 3d. The removal rate reduced when hydraulic loading doubled or temperature lowered. Effluent recirculation could alleviate the temperature effect. Combining aged refuse and slag biofilters could treat leachate more efficiently. Pyrosequencing analysis indicated that bacteria from Pseudomonas, Lysobacter, Bacillus and δ-proteobacter, Flexibacteraceae were more abundant in the samples. The Shannon index decreased at lower temperature, while evenness and equitability increased with recirculation. We suggest that filter medium and temperature may be the main factors for shaping bacterial community structure.
KW - Aged refuse biofilter
KW - Community structure
KW - Low temperature
KW - Mature landfill leachate
KW - Pyrosequencing
UR - https://www.scopus.com/pages/publications/82955203154
U2 - 10.1016/j.biortech.2011.09.114
DO - 10.1016/j.biortech.2011.09.114
M3 - 文章
C2 - 22023964
AN - SCOPUS:82955203154
SN - 0960-8524
VL - 103
SP - 71
EP - 77
JO - Bioresource Technology
JF - Bioresource Technology
IS - 1
ER -
