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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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