industrial high rated anaerobic waste (water) treatment daniël piet (the netherlands) 2007
TRANSCRIPT
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Industrial high rated anaerobic waste (water) treatment Industrial high rated anaerobic waste (water) treatment
Daniël Piet
(The Netherlands)
2007
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Contents
Introduction Biothane Group
Aerobic vs. Anaerobic
Anaerobic technologies Biothane® UASB Biobed® EGSB
Practical example + some references
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Biothane group
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To date: > 475 references in > 30 countries
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Anaerobic vs. Aerobic
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COD value vs. effluent charge
R -
R 100,000.00
R 200,000.00
R 300,000.00
R 400,000.00
R 500,000.00
R 600,000.00
0 2000 4000 6000 8000 10000 12000
Final COD (mg/l)
Mon
thly
eff
luen
t cha
rge
Figures for 50 m³/h industrial eff luent mixed w ith 2 m³/h domestic site eff luent; assumes other pollutant parameters w ithin limits.
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Aerobic (classic)
High Air input 0,7-1 kWh/kg COD
High 0,2-0,6 kg/kg COD Disposal costs
Low rate Big footprint
Energy consumption
Sludge production
Surface area
Anaerobic
Low Biogas production 0,07-0,1 kWh/kg COD
Low 0,03-0,05 kg/kg COD Value
High rate Compact design
Anaerobic vs. aerobic
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Full-scale Anaerobic reactorsbased on granular sludge technology
Influent
Sludge bed
Settler
EffluentBiogas
Sludge blanket
2 2
1 1
3 32
1. Sludge/biomass inlet2. Gas baffle plates3. Return settled sludge
Sludge bed
Effluent
2
1
1. Granular sludge/water2. Settled granular sludge
Biogas
Influent
BBiothane® UASB BBiobed® EGSB
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Granular sludge (1-3 mm)
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Full-scale Biothane UASB
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Full-scale Biobed EGSB
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Biobed® MP
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Example project
Flow: 1000 m3/d COD: 4000 ppm 4000 kg COD/d
No specific requirements for discharge (Bulk COD removal (80%), < effluent charge)
Biological treatment system
Aerobic (activated sludge, MBBR, MBR, etc.)
Anaerobic (UASB, EGSB, Biobulk or lagoon type)
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Results*
Anaerobic Aerobic
Energy consumption 224 kWh/d 2240 kWh/d
Sludge production 96 kg/d 640 kg/d(Euro!) (Costs!)
Biogas production 1120 Nm3/day -(ca. 340 kJ/s, nett)
Chemical dosing lime, nutrients, -
* Based on 80% COD removal, general figures
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Loading rates (kg COD/m3) Aerobic vs. anaerobic
Aerobic: Volume *
Activated sludge 0.5 – 1 kgCOD/m3 3200 m3
MBBR 2 – 3 kgCOD/m3 1070 m3
MBR 3 – 4 kgCOD/m3 800 m3
Anaerobic:
Biobulk/Lagoon 3 – 5 kgCOD/m3 640 m3
UASB 8 – 12 kgCOD/m3 270 m3
EGSB 15 – 25 kgCOD/m3 130 m3
* Based on 80% COD removal, general figures
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Anaerobic limitations
Applicability Anaerobic Technology Organic components anaerobic biodegradable Bulk COD removal step No N and P removal Minimum required temperature is 25 Degree Celsius Minimum COD required is approx. 1200 ppm Minimum COD load is approx. 500 - 1000 kg/day
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Aerobic vs. Anaerobic
Parameter Aerobic Anaerobic
Achieves <30 mg/l Yes – needs tertiary support
No – needs aerobic & tertiary
Can be Shutdown No Yes – for extended periods
Sludge Generation High Low
Energy Usage High Low
Land Usage High Low
Useable Biogas Production
No Yes
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Sari Husada-Numico (Indonesië) Milk powder and baby food
DAF for pre-treatment
Biobulk digester for DAF float (+ aerobic surplus sludge)
“Low loaded” UASB 650 m³
UASB 650 m3 Biobulk 500 m3
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Modular plantFruit juice application
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Döhler Euro Citrus (Oosterhout, NL)Full-scale plant: the Biobed® MP
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Typical process configurationPotato processing Industry
UASB reactor
Pre Settler
Screen
Buffertank
Conditioning tank
Final clarifier
Aerobic
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Murray Goldburn (Australia)Milk
Combined pre-settler / Flotation (DAF) for “complete” removal of non-soluble substances
Primary sludge/ float to waste EGSB 350 m³
Buffertank Conditionings tank Biobed EGSB 350 m³
DAF
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Biothane®UASBFritolay Kashira
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Anheuser-BuschColumbus, Ohio
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Cerveceria Nacional DominicanaDominican Republic
Anaerobic & Aerobic Treatment
One EGSB Reactor - Expansion Underway
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Thank you for your attention!!