Treatment of landfill leachate with an upflow anaerobic reactor combining a sludge bed and a filter

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

The operational characteristics, efficiency of treatment of landfill leachate, and recovery of energy in a laboratory scale hybrid bioreactor were investigated. The reactor was a continuous upflow system combining a sludge bed and a filter and as operated at 35°C. This modified anaerobic sludge bed filter (SBF) reactor was found to provide efficient treatment of the organic constituents of the leachate. Removal of soluble COD was greater than 92% at organic loading rates less than 13 kg COD/m3/d, and removal decreased to 70% with an organic loading rate of 21.77 kg COD/m3/d. A solids balance indicated that 0.041 g volatile suspended solids (VSS) were produced per gram of COD removed. The removal of sulfate and soluble Fe was as high as 90% and 96.9%, respectively. An accumulation of Fe was observed. When the influent concentration of total Fe ranged from 160 to 515 mg/l, the total Fe concentration in the sludge was as high as 7,100 mg/l after a 185 day period of operation. The sulfate loading of the system affected energy recovery. When the sulfate loading rate increased from 102 to 683 mg/l/d, energy recovery decreased from 90% to 52%. The biogas conversion factor for methane was 0.31 l at STP per gram of COD removed.

Original languageEnglish
Pages (from-to)133-143
Number of pages11
JournalWater Science and Technology
Volume21
Issue number4-5 -5 pt 1
Publication statusPublished - 1989

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Land fill
sludge
sulfate
filter
Recovery
Biological filter beds
Biogas
Bioreactors
biogas
bioreactor
leachate
Methane
methane
energy
reactor
rate
removal
landfill leachate
Sulfates
energy recovery

All Science Journal Classification (ASJC) codes

  • Water Science and Technology

Cite this

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abstract = "The operational characteristics, efficiency of treatment of landfill leachate, and recovery of energy in a laboratory scale hybrid bioreactor were investigated. The reactor was a continuous upflow system combining a sludge bed and a filter and as operated at 35°C. This modified anaerobic sludge bed filter (SBF) reactor was found to provide efficient treatment of the organic constituents of the leachate. Removal of soluble COD was greater than 92{\%} at organic loading rates less than 13 kg COD/m3/d, and removal decreased to 70{\%} with an organic loading rate of 21.77 kg COD/m3/d. A solids balance indicated that 0.041 g volatile suspended solids (VSS) were produced per gram of COD removed. The removal of sulfate and soluble Fe was as high as 90{\%} and 96.9{\%}, respectively. An accumulation of Fe was observed. When the influent concentration of total Fe ranged from 160 to 515 mg/l, the total Fe concentration in the sludge was as high as 7,100 mg/l after a 185 day period of operation. The sulfate loading of the system affected energy recovery. When the sulfate loading rate increased from 102 to 683 mg/l/d, energy recovery decreased from 90{\%} to 52{\%}. The biogas conversion factor for methane was 0.31 l at STP per gram of COD removed.",
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Treatment of landfill leachate with an upflow anaerobic reactor combining a sludge bed and a filter. / Chang, Juu-En.

In: Water Science and Technology, Vol. 21, No. 4-5 -5 pt 1, 1989, p. 133-143.

Research output: Contribution to journalArticle

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AB - The operational characteristics, efficiency of treatment of landfill leachate, and recovery of energy in a laboratory scale hybrid bioreactor were investigated. The reactor was a continuous upflow system combining a sludge bed and a filter and as operated at 35°C. This modified anaerobic sludge bed filter (SBF) reactor was found to provide efficient treatment of the organic constituents of the leachate. Removal of soluble COD was greater than 92% at organic loading rates less than 13 kg COD/m3/d, and removal decreased to 70% with an organic loading rate of 21.77 kg COD/m3/d. A solids balance indicated that 0.041 g volatile suspended solids (VSS) were produced per gram of COD removed. The removal of sulfate and soluble Fe was as high as 90% and 96.9%, respectively. An accumulation of Fe was observed. When the influent concentration of total Fe ranged from 160 to 515 mg/l, the total Fe concentration in the sludge was as high as 7,100 mg/l after a 185 day period of operation. The sulfate loading of the system affected energy recovery. When the sulfate loading rate increased from 102 to 683 mg/l/d, energy recovery decreased from 90% to 52%. The biogas conversion factor for methane was 0.31 l at STP per gram of COD removed.

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