The Role of UN-Energy in ensuring sustainable bioenergy development
The role of nutrients in the bioenergy production
Transcript of The role of nutrients in the bioenergy production
The role of nutrients in the bioenergy production
Nicolás Morales – Aqualia
3rd EUROPEAN NUTRIENT EVENT @ ECOMONDO 2018
8 - 9 November 2018, Rimini, Italy
www.smart-plant.eu/ENE3
www.smart-plant.eu/ENE3
Aqualia treats 700 000 000 m3/year of urban WW
Electric consumption associated:
0.5 kWhel /m3 = 350 MkWh = 35 M €
500 000 000 people in Europe x
0.5 kWhel/m3 x 0.15 m3/PE·d = 37 500 MWh/d
37500 MWh/24 h = 1560 MW
Potential energy content of urban WW is
≈ 500 mg COD/L x 4 kWh/kg COD
≈ 2 kWhth /m3
(≈ 0.7 kWhel /m3)
Wastewater isBioenergy!
Promote Anaerobic routefleet vehicle quality
ABAD Bioenergy®Biogas upgrading
Figure 2. Integration of the AbAd process in a conventional WWTP
Water line
Sludge line
Biogas line
PRIMARY SETTLER SECONDARY
SETTLER
SCREEN
GRIT
REMOVAL
AEROBIC
REACTOR WASTEWATER EFFLUENT
PRIMARY
SLUDGE SECONDARY
SLUDGE
ANAEROBIC
DIGESTER DEWATERING DIGESTATE
BIOGAS
BIOMETHANE
>95% CH4
>85% CH4
<150 ppm H2S
BIOFUEL
NATURAL
GAS GRID
CHP
Biogas Biomethane
CH4 [%-vol] 65.9 ±2.3 > 89.6
CO2 [%-vol] 33.8 ±1.4 < 5
N2 [%-vol] 2.4 ±1.5 < 6
O2 [%-vol] 0.5 ±0.5 0.02
H2S + COS [mg S/Nm3] 915 ±449 < 5
Siloxanes [mg Si/Nm3] 5 0.3
Water content (ppm) - < 10
C
www.smart-plant.eu/ENE3
N fixationHaber-Bosch Process
10 kWh/kg N
Wastewater as nutrient source!
N P
C
NP
ELAN® Process (ELiminación Autótrofa de Nitrógeno,
Autotrophic Nitrogen Removal) PN/Anammox in one stage with granular biomass
European Patent: EP 2 740 713 A1
Processes
O2
consumption
(kg O2 / kg N)
COD
consumption
(kg COD /kg N)
CO2
emission
(kg CO2/kg N)
Yield
(kg VSS/kg N1)
Nitrification-
Denitrification3.18 4.9 3.52 2.11
ELAN® 1.83 0 3.26 0.12
Advanced WWTP
AD centrate:
• NH4+ 1000 mg N/L
• P: 80 mg P/L
• Alk ≈ 70 mmol/L
• pH ≈ 7.8
Final effluent:
• NH4+ 50 mg N/L
• P 10 mg P/L
• pH ≈ 8.5
ELAN® effluent:
• NH4+ 80 mg N/L
• P 80 mg P/L
• Alk ≈ 6 mmol/L
• pH ≈ 6.9
N
N P
N P
CN P N P
Co-digestion
ELAN Struvite
Advanced WWTP: ELAN process in the mainstream
Cas
e A
Slu
dge
d
isin
tegr
atio
n u
nit
Cas
e B
A
nam
mo
x
in t
he
slu
dge
lin
e
Cas
e C
A+B
Cas
e D
C
+ A
nam
mo
x
in t
he
wat
er
line
Cas
e E
An
aero
bic
MB
R
and
An
amm
ox
Parameter
Aeration
requirements (%)+13 -26 -25 -50 -86
Biogas production
(%)+15 +18 +51 +67 +250
Sludge generation
(%)-24 +17 -1 +9 +4
N2O emissions (%) +3 -22 -22 -83 -83
Saving costs (%) 6 7 19 28 68
Life Memory: Membrane for ENERGY and WATER RECOVERY
Potential Net Energy
production of
> 0.1 kWh/m3
Disinfected Nutrient
Rich Water
for Irrigation
Anaerobic Membrane Bioreactor AnMBR
N P
Sewer mining
www.smart-plant.eu/ENE3
Population density in Spain (avg: 90 hab/km2) (https://www.citymetric.com)
Centralized treatments?
73% of municipalities < 2 000 inhabitants Central and Eastern Europe: 90% of settlements have less than 2 000 inhabitants
Decentralized alternatives
www.smart-plant.eu/ENE3
Recovery and Utilization of
Nutrients 4 Low Impact FErtilizer
- Domestic wastewater: important nutrient carrier not currently exploited
- Decentralized nutrient recovery from wastewater at the source
NC N P K
KP
Anaerobic digestion
UASB, AnMBR, HTAD
www.smart-plant.eu/ENE3
Water Re-use
Bio-fertilizers
Biomethane
CO2Wastewater rich in
nutrients
O2
N, P
Symbiosis: Algae - Bacteria
Images: Shutterstock
N P
N P
C
N P
C
C
N P
1 hectare cultivation
N PN P 10 €/kg
99
39,6
20,78
0
20
40
60
80
100
120
140
Biomasa Proteina Aminoacido
Co
nce
ntr
aci
on
(g
/L)
REG3Market ready
Biomass Protein Amino acid
Co
nce
ntr
atio
n(g
/L)
Bioestimulants and biopesticides; Antioxidants, peptides, fatty acids; Biofertilizers; Aquaculture;
• Projects focus on the reduction/recovery of energy
• Decentralized treatments. Treatments at the source. Sewer mining.
• Nutrients recovery:
❑Water for reuse: Irrigation
❑Solid and liquid fertilizers from the treatment of concentrated streams
❑From the biomass/algae: bio fertilizers, bio stimulants…
Thank you for your attention
Nicolás Morales – Aqualia
www.run4life-project.euwww.linkedin.com/in/run4life-project
twitter.com/RUN4LIFE_H2020This project has received funding from the European Union’s Horizon 2020 research
and innovation programme under grant agreement No 730285