Effect of layers composition on leachate property from functional layer embedded landfill

Liu, Ziyang; Feng, Jin; Zhong, Shian; Yuan, Haiping; Zhu, Nanwen

doi:10.1016/j.biortech.2011.04.084

Cited by 5 publications

(1 citation statement)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…pH and ORP were measured by a portable pH meter (Five Go, METTLER TOLEDO, Switzerland). The AR extracts processes were referred to our previous works (Lou et al, 2011). The total organic carbon (TOC) was evaluated by a Multi N/C 3100 Analyzer (Analyti Jena, Germany).…”

Section: Physical and Chemical Properties Analysismentioning

confidence: 99%

The acceleration degradation processes of different aged refuses with the forced aeration for landfill reclamation

Liu

Ning

Huang

et al. 2023

Waste Dispos. Sustain. Energy

Self Cite

View full text Add to dashboard Cite

Forced aeration is one of the promising ways to accelerate land ll reclamation, and understanding the relation between aeration rates and waste properties is the prerequisite to implementing forced aeration under the target of energy saving and carbon reduction. In this work, land ll reclamation processes with forced aeration were simulated using aged refuses (ARs) of 1, 4, 7, 10, and 13 disposal years, and the potential of eld application was also investigated based on a eld project, to identify the degradation rate of organic components, the O 2 consumption e ciency and their correlations to microbes. It was found that the removal rate of organic matters declined from 20.3% (AR 1 ) to 12.6% (AR 13 ), and that biodegradable matter (BDM) decreased from 5.2-2.4% at the set aeration rate of 0.12 L O 2 /kg DM/day, respectively. A linear relationship between degradation rate constant (K) of BDM and disposal ages (x) was established: K=-0.0002193x + 0.0091 (R 2 = 0.854), suggesting that BDM might be a suitable indicator to re ect the stabilization of ARs. The cellulose/ lignin ratio decrease rate for AR 1 (18.3%) was much higher than AR 13 (3.1%), while the corresponding humic-acid/ fulvic-acid ratio increased from 1.44 to 2.16. The dominant bacteria shift from Corynebacterium (9.2%), Acinetobacter (6.6%), and Fermentimonas (6.5%), genes related to the decompose of biodegradable organics, to Stenotrophomonas (10.2%) and Clostridiales (3.7%), which were associated with the humi cation. The aeration e ciencies of lab-scale tests were at the range of 5.4-11.8 g BDM/ L O 2 for ARs with disposal ages of 1-13 years, and in situ land ll reclamation, ARs with disposal age of 10-18 years were around 1.9-8.8 g BDM/ L O 2 , as the disposal age decreased. The increased discrepancy was observed in ARs of lab-scale and eld scale, indicating that the forced aeration rate should be adjusted based on aged refuses and the unit compartment combined, to reduce the operation cost.

show abstract

Section: Physical and Chemical Properties Analysismentioning

confidence: 99%