Biological leachate treatment using anaerobic/aerobic process: suspended growth-activated sludge versus aerobic granular sludge

Ren, Yongsheng; Ferraz, Fernanda; Yuan, Qiuyan

doi:10.1007/s13762-017-1633-3

Cited by 22 publications

(12 citation statements)

References 37 publications

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“…IOP Publishing doi:10.1088/1755-1315/1091/1/012051 6 AGS, on the other hand, still outperformed activated sludge in terms of COD removal [54]. Similar findings were also obtained by Ren et al [52] suggesting that low COD removal (64%) was associated with low BOD/COD ratios of old leachate varying from 0.15 to 0.2 (low biodegradability).…”

Section: Leachate Agesupporting

confidence: 71%

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The applications of aerobic granular sludge for leachate treatment: A review

Ilmasari

Yuzir

2022

IOP Conf. Ser.: Earth Environ. Sci.

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The vast majority of the world’s daily municipal solid waste (MSW) is dumped in landfills without being treated first. Leachate generated from these landfills is defined as dark-coloured, highly contaminated wastewater that has become a problem for the environment, posing a threat to soil, surface water, and groundwater quality and having a detrimental influence on human health. Thus, leachate treatment is strongly recommended prior to final discharge. The application of aerobic granular sludge (AGS) technology for wastewater treatment has increased in recent years, especially for industrial wastewater such as leachate. Due to its significant advantages over conventional activated sludge technology, such as denser structure, improved settleability, faster effluent separation, higher biomass content, and improved shock loading resistance, AGS is a viable option for leachate treatment. This article provides detailed discussions of the leachate characteristics along with the available treatment systems, focusing on the AGS system. The efficacy of AGS technology in the treatment of landfill leachate was elucidated by highlighting its benefits, governing factors affecting its performance, and limitations. Based on the latest literature, this paper attempts to identify the research gaps and obstacles in using AGS technology for landfill leachate treatment.

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Section: Leachate Agesupporting

confidence: 71%

“…Another study regarding the development of AGS for leachate treatment was conducted by Ren et al [54]. By diluting leachate with municipal wastewater at a volumetric ratio ranging from 10 to 100%, leachate was gradually introduced to SBR.…”

Section: Performance Of Ags For Leachate Treatmentmentioning

confidence: 99%

The applications of aerobic granular sludge for leachate treatment: A review

Ilmasari

Yuzir

2022

IOP Conf. Ser.: Earth Environ. Sci.

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“…Gao reported an average COD removal of 13.2%. The performance of the ATPAFBRWIC was lower than that reported by Ren et al., [ 39 ] who performed leachate treatment by suspended growth‐activated sludge and aerobic granular sludge for longer HRTs, of the order of 7 h, a situation that led to greater microbial activity. A similar situation occurred in relation to the studies carried out by Bernat et al., who reported COD removal efficiency of the order of 87% using sequencing batch biofilm reactor technology with the following operating times: filling (5 min), mixing (3 h), aeration (20 h), and sedimentation and decantation (55 min).…”

Section: Resultsmentioning

confidence: 56%

Organic matter and nutrients removal from landfill leachate by airlift aerobic three‐phase fluidized bed reactor

Pantoja‐Quiroz,

Burbano‐Moreno,

Sánchez Ortiz

2023

CLEAN Soil Air Water

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The treatment of leachate from the Antanas Landfill in the municipality of Pasto, Colombia, was evaluated by means of aerobic three‐phase airlift fluidized bed reactors with internal circulation (ATPAFBRWIC) with an external and internal diameter ratio of 2 and an individual effective volume of 53 L. Silica sand was used as a carrier at a concentration of 104 g L−1, and the reactors were operated with hydraulic retention times (HRT) of 1, 2 and 4 h. For a period of 45 days, the following parameters were monitored at the influent and effluent of the reactors: biochemical oxygen demand (BOD), chemical oxygen demand (COD), total phosphorus (TP), total ammonia nitrogen (TAN), total Kjeldahl nitrogen, nitrites and nitrates, where the respective average concentrations recorded in the influent were 4225.9, 7115.2, 14.1, 1664.1, 1591.1, 0.41, and 31.8 mg L−1. The best performance in the removal of organic matter and nutrients was recorded for a 2‐h HRT, with average removal efficiency of 52.9% for BOD and 26.8% for COD, and 52.5, 5.6, and 56.2% for TP, TAN, and nitrates, respectively. The low volumes required for ATPAFBRWIC suggest their potential use as compact leachate treatment units.

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“…Additionally, some studies evaluated the capacity of granular aerobic sludge to remove organic matter, ammonia and phosphorus (among others) from landfill leachate [ 8 , [88] , [89] , [90] ]. Carbon removal rate has been reported with very low values from landfill leachate [ 89 ]. Indeed, so far there are no scientific reports about the removal of polyvalent cations with AGS from leachate.…”

Section: Cationic Pollutant Removalmentioning

confidence: 99%