WEX 2012 The Water and Energy Exchange - 31st January – 2nd February 2012 – Lisbon

1. WEX 2012 The Water and Energy Exchange
31st January – 2nd February 2012 – Lisbon
Chile, Santiago - Mapocho Project
Converting a Conventional Plant into
an Advanced Anaerobic Digestion
Plant.
Miguel Angel SANZ
Degrémont SA
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2. Greater Santiago Wastewater Collectors
and Treatment Management Plan
1999 2010 2012
Number of
6 15 16
WWTPs
Treated Flow
0.48 m3/s 14.4 m3/s 17 m3/s
Rate
1,000
Biosolids 0 tons/day 720 tons/day
tons/day
Population Eq.
180.000 5.520.000 6.050.000
treated
Coverage 3% 87% 100% Greater Santiago will be the first South American
Total
613 MUSD 870 MUSD
Capital City to reach this target, in only 13 years
Investment
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3. El Trebal - Mapocho WWTP (Chile)
EL TREBAL WWTP
Initial stage commissioned in 2001, for a design
capacity of 4.4 m3/s (1.600.000 PE)
EL TREBAL-MAPOCHO WWTP
Extension of 2.2 m3/s and new pretreatment,
reaching a 6.6 m3/s capacity, for full coverage of
Santiago Wastewater treatment + Detail engineering
CLIENT: AGUAS ANDINAS of extension to 8.8 m3/s + Basic engineering for 11
Type of Contract: Design-Built-O&M m3/s
CAPEX: 195 MUSD Advanced treatment with Thermal Hydrolysis CAMBI
O&M: 4 years with option to 5 additional years + cogeneration
TREATMENT: Full production scheduled in March 2012
Water: Pretreatment - Primary Settling – Activated O&M contract performed in partnership with Agbar,
sludge – Secondary settling -Chlorination for 4 years with option to 5 additional years
Sludge: Thickening – THP + Anaerobic Digestion – Water Treatment Targets:
Dewatering BOD5 35 mg/l
Others: Cogeneration SS 35 mg/l
Fecal coliforms 1000/100 ml
3

4. Mapocho WWTP– 2 Phases Extension
EL TREBAL – 2010 EL TREBAL &
(1.6 millions PE) 12 MAPOCHO – 2018
(3.2 millions PE)
8 6.6
4.4 m3/s
m3/s
2.2 m3/s
m3/s
4
0
2010 2012 2018 2050
El Trebal Mapocho 4

5. El Trebal-Mapocho WWTP: 8.8 m3/s, 2018
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6. Cambi THP
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7. Thermal Hydrolysis of Sludge and
Anaerobic Digestion
Thermal Hydrolysis ow viscosity
 Allow High Concentration in Digester
Hydrolysis  Increase kinetics
 Enhances Volatile Matter Removal
Thermal Treatment :  Improve Dewaterability
Pre-thickened Sludge Hydrolyzed Sludge Digested Sludge Dewatered Sludge
BENEFITS
− Save digesters
− Increase Electricity Production reduction of
− Reduce Total Amount of Sludge O&M costs
− Improve Digester Stability
− Good Opportunity for Thermal Drying in the future
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8. Mapocho Sludge Treatment
Biological Desulfurization
sludge Primary sludge - storage -
cogeneration
Anaerobic digestion
Pre-thickening Thickening
Pre-dewatering
Strain Press Dewatering
Thermal Hydrolysis (Cambi)
Mixing
& Lime Final disposal
Cooling stabilization
Chamber
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9. Mapocho: THP Cambi - Digelis™ Turbo
January 2012: Commissioning
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10. Mapocho WWTP :THP Impact on OPEX
The Cambi-Digelis™ Turbo process allows to:
 Reduce the sludge transportation and disposal cost by 27%
 Increase the biogas production by 13%
 Decrease the polymer consumption for dewatering by 26%
260°C
 Electricity Production 2012: 8.7 MWh 450°C
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11. Sustainable Development
and Carbon Footprint
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12. WEX 2012 The Water and Energy Exchange
31st January – 2nd February 2012 – Lisbon
THANK YOU FOR
YOUR ATTENTION
Chile, Santiago - Mapocho Project Converting a
Conventional Plant into an Advanced Anaerobic
Digestion Plant.
Miguel Angel SANZ
Degrémont SA
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