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8/20/2019 Sustainable Landfill
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W A ST E M A N A GE M E N T W OR L D
0 5 / 0 1 / 2 0 1 0
V O L U M E 1 1 , I S SUE 3
Sustainable Landfill
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Landfill Options
Traditional Landfill Anaerobic Sealed ‘Black Box’
Long decomposition time
Bioreactor Landfill – Wet Landfill Increased oisture – Increased decomposition speed Input of air
ore complete breakdo!n "ecreased met#ane production
Landfill as !aste treatment $at#er t#an long term storage
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Bioreactor Landfill
Anaerobic
Aerobic
Semi%aerobic
&'brid designs Aerobic follo!ed b' anaerobic
Instigate L() generation
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Bioreactor Landfill
Aerobic and (acultati*e Anaerobic Bacteria $at#er t#an Anaerobes
$ate of deca' can be similar to composting
+roper aeration, moisture addition and gasextraction are needed
Air is t'picall' in-ected *ia *ertical in-ection !ells
Water or ot#er li.uids are often added
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Bioreactor Landfill
Second set of *ertical !ells connected to a gas *acuum and #eader s'stem for remo*al of/ )ases/ 0O1, Trace amounts of non%met#ane organic
compounds 23O0s4 Li.uids/ Water *apour Salts
Air input is controlled
5noug# to encourage aerobic decomp 3ot enoug# to encourage explosions
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Bioreactor Landfill
Aerobic process as a remediation tool lo!ered t#e #a6ards and risks t'picall' found in anaerobic !aste
en*ironments #ig# pat#ogen mortalit'
reduced met#ane
0ase Stud'/ Baker +lace $oad landfill in 0olumbia 0ount',)eorgia 27SA4 89: #a SW landfill air and leac#ate in-ected into t#e !aste *ia *ertical !ells for ;< mont#s9
biodegradation rate reportedl' increased b' :=>, leac#ate BO" fell b' 8:>, met#ane production decreased b' ?=> 3O0 le*els declined b' @:>9
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Bioreactor Landfill
Atlanta – ; #a lined pilot cell
;8 #a &eis#itou landfill near Bei-ing +ilot under!a' since 1==@
Operators can no! reco*er airspace, reduce risks,lo!er post%closure care and reali6e man' ot#er
benefits in less time
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Bioreactor Landfill
0ase Stud'/ +erdido SW landfill in 5scambia0ount', (lorida Inno*ati*e on%site mining pro-ect 18 additional 'ears of life in landfill as a result of process (rom t#is pilot kno!ledge gained could lead to/
3on%compliant sites meeting !aste management regulations9
‘$eco*er'’ of landfill airspace9
$educing leac#ate and landfill gas production9
$eclaiming soils from exca*ated areas
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Bioreactor Landfill
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Bioreactor Landfill
Waste management tool rat#er t#an containment orremediation
(ollo!ing breakdo!n, #ig# calorific *alue materials
could be used for $"(0omposted material – same market as traditional
compost or rec'cled as co*er material
5conomics 3o re.uirement for capping, monitoring, post closure care
$esult in sa*ings
$educed emissions of )&)s
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