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We create sustainable aquatic environments and extract resources for the benefit of you and your city

BIOFOS is the largest wastewater utility in Denmark. We treat the wastewater of 1.2 million people living in the Greater Copenhagen Area at our three treatment plants Lynetten, Avedøre and Damhusåen. We use the resources contained in the wastewater for climate-friendly energy in the form of electricity, biogas and district heating for the grid. BIOFOS also operates an active visitor service, which receives more than 12,000 visitors a year.

BIOFOS

Presentation of BIOFOS 3

BIOFOS' catchment area

9 shareholders 8 utilities (customers) 1.2 million inhabitants 3 treatment plants 60 km transmission lines

15 OWNER MUNICIPALITIES

9. Juni 2016

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The Lynetten wastewater treatment plant

• In 2015, the Lynetten treatment plant received and treated 67 million m3

rainwater and wastewater • The plant is designed to treat the

wastewater of 1 million people (PE) • Max. influx: 41,500 m3/h • Digesters: 18,000 m3 • Sewage sludge is treated and

incinerated at its own incineration plant

• Capacity for sludge incineration: 2.35 ton dry matter/h

• The treated wastewater is discharged into The Sound via two 1.5 km-long pipes leading into the sea

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The Avedøre wastewater treatment plant

• In 2015, the Avedøre treatment plant received and treated 28 million m3 rainwater and wastewater

• The plant is designed to treat the wastewater of 400,000 people (PE)

• Max. influx: 20,000 m3/h • Digesters: 24,000 m3 • Sewage sludge is treated and

incinerated at its own incineration plant

• Capacity for sludge incineration: 1.9 ton dry matter/h

• The treated wastewater is discharged into Køge Bay via two 1.1 km-long pipes leading into the sea

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The Damhusåen wastewater treatment plant

• In 2015, the Damhusåen treatment plant received and treated 33 million m3 rainwater and wastewater

• The plant is designed to treat the wastewater of 350,000 people (PE)

• Max. influx: 28,000 m3/h • Digesters: 7,600 m3 • Sewage sludge is treated in its own

digesters, and the digested sludge is transported either to the Lynetten treatment plant or the Avedøre treatment plant for incineration.

• The treated wastewater is discharged into The Sound via two 1.2 km-long pipes leading into the sea

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Visitor service/KloakLab (sewage lab)

We help educate residents and companies about sustainable aquatic environments and wastewater resources • Primary Schools, upper secondary schools

and colleges as well as vocational training colleges

• Associations and interest groups • Industry-related education programmes

(Technical University of Denmark (DTU), University of Copenhagen, The Copenhagen School of Marine Engineering and Technology Management, laboratory technician training, etc.)

• Municipalities, utilities, our industry • VIP visits, including foreign delegations

BIOFOS receives more than

12,000 visitors a year

150.1%

54,590 MWh ELECTRICITY, DISTRICT HEATING, HEATING OIL, ETC.

PURCHASE OF ENERGY

51,751 MWh ELECTRICITY

WASTEWATER TO TREATMENT PLANT

129 million m3

+ 27,369 MWh ENERGY BALANCE 2015

81,959 MWh DISTRICT HEATING, BIOGAS, ELECTRICITY

SALE OF ENERGY 525 MWh DISTRICT HEATING

217 m3

HEATING OIL

41,380 MWh DISTRICT HEATING

4,435,115 Nm3

BIOGAS

11,015 MWh ELECTRICITY

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Business development – Development of the core business

Optigas

Increased biogas production and organic waste

New products, services,

technologies and methods

EDASK

Recovery of phosphorus from ash

Pilot plant

Trial with capacity, etc.

ENZUP and BIOCAT2

Upgrading of biogas

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Benchmarks for 2025

The benchmarks are highly ambitious, and, in the period from 2015–2020, we will create the conditions to ensure that the four benchmarks can realistically be achieved by 2025: • All residual products from our core processes

will be recycled or made use of from 2025 • BIOFOS as a whole is carbon neutral by 2025 • BIOFOS as a whole is energy producing, net,

by 2025 • All planning, coordination, management and

operation of rain and wastewater management is considered as one cohesive system throughout the entire BIOFOS catchment area by 2025

BIOFOS

Head office: BIOFOS Refshalevej 250 DK-1432 Copenhagen K post@biofos.dk Tel.: +45 32 57 32 32

www.biofos.dk

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Find us on linkedin: http://linkedin/company/biofos

BIOFOS

Technical Tour, Holistic Sludge Management

Biogas projects and Sludge incineration facilitates an Energy producing WWTP, Avedøre v. Lars Krogsgaard Nielsen, Business Development BIOFOS

Thursday 9th. June 2016.

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Energy Projects, WWTP Avedøre

• Upgrading Plant – biogas to biomethane (natural gas)

ENZUP-project, HMN/Akermin

• Power conversion into biomethane

BioCat 2-demo-project, Electrochaea

• New Heating System – based on district heating instead of a biogas engine

NYVA-project, BIOFOS

Overview of the new Biogas Park og Digesters

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BIOFOS Energy Policy

Energy Target Avedøre WWTP: • CO2-neutrality in 2025. • Reduce the power consumption (electricity) by 25% in 2012 and by 35% in 2020 compared to the year of 2007

How to meet this: • Organic carbon handling/treatment. • Regain excess heat. • Shift to more energy efficient technology. • Reduce leakage of methane and N2O • Treatment of external waste sources.

Energy is correlated to organic carbon

Sludge system – Carbon is the source of Energy • Primary sludge and biological sludge is converted into biogas . • The digested sludge is dewatered and incinerated - and the rest of the carbon is tranformed into heat energy.

Water system – Carbon is partly lost in the Aeration Tanks • Optimize the treatment of carbon in the wastewater: - Distribution between C captured in the primary sludge and C send to the aeration tanks. - Aeration system, reject treatment and process control.

Carbon =

ENERGY

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5 3

2

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The “sludge part” of Avedøre WWTP. 1) Primary Clarifiers 2) Digesters 3) Gas storage and flare 4) Biogas Park: upgrading and methanisation 5) Sludge Incineration

Inlet: 40 tons COD/day

RT inlet: 25 tons COD/day

Primary Sludge: 15 tons COD/day

Incineration: 12 tons COD/day

Inlet Aeration Tanks: 25 tons COD/day

Distribution of organic Carbon (COD) at the WWTP

Biological Sludge: 10 tons COD/day

Biogas: 13 tons COD/day

Titel på præsentation 14. april 2014 18

Heat System today – based on a biogas engine

Titel på præsentation 14. april 2014 19

New Heating System based on Distric Heating

Shift in Praxis - Utilization of Energy – Optimize the (same amount of) Organic Carbon in the wastewater

MWh/year CO2 emission

tons/year

Central Heat System before, consumption:

Electricity, netto (import-export)

Heating Oil import

Total 8,400

6,300 (14,300-8,000)

2,100

Total 2.318

1.732

586

Biogas to Gas Engine: Electricity

Heat and loss (from Gas Engine)

Sludge incinerated (loss)

20,000: 8,000

12,000

5,300

0: 0

0

0

Central Heat System new:

Biogas to the Grid (export)

Sludge incinerated, District Heat export

District Heat (import)

Electricity (import)

Natural Gas (import)

Total -6,350

-20,000

-5,300

3,600

14,300

1,050

Total -171

-4,080

-742

504

3,933

214

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CO2-constants (kg CO2- eq. per. MWh) (Danish Energy Agency, 2014):

Natural gas 204 District Heat 140

Heating oil 279 Electricity 275

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Biogas Park, march 2016 – two new biogas facilities

ENZUP: Enzymatic biogas Upgrading

BioCat2, methanation of CO2

Akermin’s biocatalyst system, ENZUP Project

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Enzyme

Protected agains degradation in a patend polymer film

Huge surface area in the polymer film inhances a

high speed for CO2 absorption

Coated packing

Micro-particles

Different biocatalysts

suppliers

Carbonic Anhydrase (Novozymes CA top candidate) - Regulates CO2 in all living organisms - Fast acting enzyme: 1 million cycles per sek. - Well known through studies in decates

Electrochaea Concept, BioCat2-Project

Biological catalyst,

Methanogenic Archaea

Electrolysis plant from Hydrogenics

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• 1 MW input • ~ 180 Nm3 hydrogen/hour • ~ 30 % of the total WWTP biogas production

- when the BioCat2 operates

2 x

Benefits for BIOFOS

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Through a new concept: • All biogas is upgraded to biomethane to inject into the natural gas grid. • The gas engine is only stand-by • The central heat system is based on district heat. • Excess heat from sludge drying at the incineration is sold as district heat. • Reduction of the heat consumption by the use of heat exchangers: - sludge in- og outlet of the digesters. - warm process flow from the incineration. - excess heat from equipment in the new biogas park.

What is achieved: • The projects has facilitated an Energy producing WWTP. • Operation costs are reduced by 1,5-2 mio. kr./y. • CO2-reduction about 2.500 tons/y

BIOFOS Sludge incineration

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TREATMENT PLANT, TON (dry solids)

Lynetten Avedøre Damhusåen Total

Sludge produced 10,437 4,638 4,097 19,172

Sludge transferred to other plants 236 - 4,097 4,333

Sludge supplied

– From the Lynetten treatment plant - 236 - 236

– From the Damhusåen treatment plant 3,667 430 - 4,097

– From wastewater utilities 541 1,572 - 2,113

Incinerated sludge 14,409 6,876 - 21,285

Sludge incineration Avedore

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5) Dried sludge silo

6) Fluidbed Furnace

7) Thermal Oil Boiler

8) 2-field electrostatic

precipitator

9) Bag filter

10) Quench/HCL scrubber

11) 2 step flue gas scrubber

12) Monitoring

13) Chimney 50m..

14) Fly ash silo

15) Controled landfield.

16) Output for external

ash transport

1) Sludge from

digesters

2) Centrifuges

3) Sludgesilo

4) Sludge drying