Wuxi/ Lahti cleantech co-operation options Esa Ekholm Business Director / Cleantech Lahti Lahti Science and Business Park Ltd

1

Sustainable waste management in Lahti region Esa Ekholm Lahti Region Development LADEC Ltd April 2013

11 municipalities

200.000 inhabitants

39 inhabitants/km2

FINLAND

SWEDEN

UK

RUSSIA

ESTONIA

LITHUANIA

LATVIA

Lahti region

Lahti Energia

Lahti Aqua

Päijät-Häme Waste

Management

Integrated waste management system - Public Private Partnership (PPP)

Private Waste

Collection Companies

Private Recycling

Companies

SOLID WASTE SEWAGE WATER

The most important milestones for

municipal waste management of Lahti region

1993: Establishment of regional municipal solid waste company Päijät-Hämeen jätehuolto Oy / Päijät-Häme Waste Management Ltd (PHJ)

1995: Separate collection and windrow composting of bio-waste

1998: Separate collection of combustible waste from large scale estates

1998: Lahti Energia Oy (LE) started the first gasification plant

2000: Extension of separate collection of combustible waste to all households

2002: Landfill gas capture (PHJ) and utilisation in Hartwall brewery

2005: Joint composting company Kujalan Komposti Oy and composting plant

for sewage sludge of Lahti Aqua Ltd (LA) and bio-waste of PHJ

2006: Outsourcing of compost post treatment and marketing to Kekkilä Oy

2008: Outsourcing of incineration (PHJ) of mixed waste into new incineration plants and construction of transfer station (PHJ) for waste to be incinerated

2011: Construction of combustible waste treatment plant (PHJ)

2012: Starting new big gasification plant (LE)

2014 Starting new dry digestion plant for bio-waste and sludge

SORTING STARTS IN THE KITCHEN

COLLECTED FRACTIONS

glass and metal packaging and WEEE to collection points

various hazardous fractions to different collection points

block houses with minimum of 10 flats

paper

card board

energy waste

bio-waste

mixed waste

COLLECTED FRACTIONS

home composting of bio-waste recommended

glass and metal packaging and WEEE to collection points

various hazardous fractions to different collection points

one-family and semi-detached houses of less than 10 flats

row houses minimum of 3 flats also paper

mixed waste

energy waste

paper

Kujala Waste Treatment Centre

7 big waste collection yards and

5 small ones 5 receptacles for hazardous wastes

at service stations Pharmacies receive waste medicines

86 Recycling points

Recycling centre as a partner

Collections of hazardous wastes

REGIONAL WASTE MANAGEMENT SERVICES

Solid recovered fuel (SRF)

5 PRIVATE SOLID WASTE COMPANIES

2 MUNICIPAL SOLID WASTE COMPANIES

LAHTI ENEGIA OY

- 250.000 t/a SRF waste

- 2-3 big waste truck / hour

Based on these good results, Lahti Energy resolved to build a new, 160 MW gasification power plant

old gasifier

main boiler

10

Waste gasification with hot gas cleaning

Lahti Energia Oy

Waste fuel handling

New gasifiers

Gas cooler and cleaning

Old coal boiler and gasifier

New gas boiler and APC • Total investment 157 M€

• Start up April 2012

• 250.000 t/a SRF waste

• Fuel power 160 MW

• 60 MW electricity

• 90 MW district heat

• Overall efficiency 89%

Biogas and compost from sludge and bio-waste

Kariniemi and Ali-Juhakkala sewage and biogas plants (Lahti Aqua Oy)

biogas

sludge

source separated bio-waste

compost

Composting plant (Kujalan Komposti Oy)

district heating (Lahti Energia Oy)

Kekkilä Oy

15 GWh/a => 51 %

NEW BIOGAS PLANT IN 2014

biogas to natural gas net new soil fertilizer

Landfill gas utilization since 2002

Utilisation range of municipal solid waste

1994-2010

0

50

100

150

200

250

300

350

400

1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010

11 % was utilised

in 1994

88 % utilised

in 2010

Development on municipal solid waste and

sewage sludge during 18 years in Lahti

Case: Etanolix ™ Lahti

• 2005-06 side products of Lahti Grain Cluster companies were studied • 2010 started bioetanol plant of ST1 Oy (5th unit) • Feedstock from Hartwall brewery

• Excess yeast that contains alcohol • Process waters and product batches containing sugar or alcohol

• Side products from bakery industry and markets • Integrated into Hartwall’s brewery and beverage plant

ST1 Oy

ST1 Oy Etanolix™-process

Distributed bio-ethanol production St1 Oy, Finnish energy company, develops and commercializes

environmentally sustainable solutions and delivers these solutions profitably

Lahti Region Development LADEC Ltd

At your service in Cleantech business! esa.ekholm@ladec.fi

Thank you !