Impact of extra-cellular polymeric substances on the filterability of activated sludge in membrane bioreactors for landfill leachate treatment

Tarnacki, Katharina; Lyko, Sven; Wintgens, Thomas; Melin, Thomas; Natau, F.

doi:10.1016/j.desal.2004.11.066

Cited by 38 publications

(12 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Membrane bioreactors maintain a wide spectrum of biomass, as well as extra-cellular enzymes and soluble oxidants, so that an active biological mixture capable of degrading a wider range of carbon sources can be produced [10]. Many of the MBR systems utilized for landfill leachate treatment are based on configurations that involve membranes external to the bioreactor [11][12][13][14][15][16]. These external MBR systems are generally considered more costly and energy intensive than the more currently developed submerged MBRs, which utilize immersed membranes within the bioreactor [8].…”

Section: Introductionmentioning

confidence: 99%

Aerobic Treatment of Landfill Leachate Using a Submerged Membrane Bioreactor – Prospects for On‐site Use

Sadri

Çiçek

Gulck

2008

Environmental Technology

View full text Add to dashboard Cite

Submerged membrane bioreactor (MBR) technology for aerobic treatment of landfill leachate was studied in laboratory scale to evaluate its potential for on-site use. Three combinations of solid retention time (SRT) - hydraulic retention time (HRT) of 60 days - 3.5 days, 60 days - 2 days and 30 days - 1 day, were examined to evaluate reactor performance under varying loading and biomass conditions. Chemical Oxygen Demand (COD) removal ranged from 54 to 78%, depending on the influent leachate source and loading conditions. The MBR showed excellent Biological Oxygen Demand (BOD5) removal of 97% and higher, even at HRT as low as 1 day. Complete suspended solids retention and full nitrification of the incoming ammonia was observed despite highly variable loading. Significant removal of iron, lead, manganese, cadmium and aluminum was observed. No significant changes in the removal efficiency of metals, ammonia, and BOD5 were observed at different SRT-HRT. Toxicity removal decreased with increasing HRT. The produced effluent met current water quality guidelines for discharge into natural streams in Manitoba.

show abstract

Section: Introductionmentioning

confidence: 99%

Aerobic Treatment of Landfill Leachate Using a Submerged Membrane Bioreactor – Prospects for On‐site Use

Sadri

Çiçek

Gulck

2008

Environmental Technology

View full text Add to dashboard Cite

show abstract

“…Specific cake resistance value of MBR biosolids were not affected significantly at MLSS concentrations ranging from 4 000 to 10 000 mg/L as long as bound EPS concentrations and the trans-membrane pressure were maintained constant (Tarnacki et al, 2005).…”

Section: Solids Separationmentioning

confidence: 95%

Activated Sludge and Other Aerobic Suspended Culture Processes

Schmit¹,

Debik²,

Jahan³

et al. 2006

Water Environment Research

View full text Add to dashboard Cite

“…The addition of successive membrane operations to biological treatments offered new advantage in the field of landfill leachate treatment (Bodzek et al, 2006) and the combination is called Membrane Bioreactors (MBR) (Tarnacki et al, 2005). A MBR thus combines the goodness of a biological reactor and membrane filtration system.…”

Section: Filtration and Membrane Bioreactorsmentioning

confidence: 99%

Contemporary Environmental Issues of Landfill Leachate: Assessment and Remedies

Mukherjee

Mukhopadhyay

Hashim

et al. 2014

Critical Reviews in Environmental Science and Technology

206

View full text Add to dashboard Cite

Landfills are the primary option for waste disposal all over the world. Most of the landfill sites across the world are old and are not engineered to prevent contamination of the underlying soil and groundwater by the toxic leachate. The pollutants from landfill leachate have accumulative and detrimental effect on the ecology and food chains leading to carcinogenic effects, acute toxicity and genotoxicity among human beings. Management of this highly toxic leachate presents a challenging problem to the regulatory authorities who have set specific regulations regarding maximum limits of contaminants in treated leachate prior to disposal into the environment to ensure minimal environmental impact. There are different stages of leachate management such as monitoring of its formation and flow into the environment, identification of hazards associated with it and its treatment prior to disposal into the environment. This review focuses on: (i) leachate composition, (ii) Plume migration, (iii) Contaminant fate, (iv) Leachate plume monitoring techniques, (v) Risk assessment techniques, Hazard rating methods, mathematical modeling, and (vi) Recent innovations in leachate treatment technologies.However, due to seasonal fluctuations in leachate composition, flow rate and leachate volume, the management approaches cannot be stereotyped. Every scenario is unique and the strategy will vary accordingly. This paper lays out the choices for making an educated guess leading to the best management option.

show abstract

Impact of extra-cellular polymeric substances on the filterability of activated sludge in membrane bioreactors for landfill leachate treatment

Cited by 38 publications

References 8 publications

Aerobic Treatment of Landfill Leachate Using a Submerged Membrane Bioreactor – Prospects for On‐site Use

Aerobic Treatment of Landfill Leachate Using a Submerged Membrane Bioreactor – Prospects for On‐site Use

Activated Sludge and Other Aerobic Suspended Culture Processes

Contemporary Environmental Issues of Landfill Leachate: Assessment and Remedies

Contact Info

Product

Resources

About