This document summarizes the biogas project at the Pääsküla landfill in Tallinn, Estonia. The landfill opened in 1962 and stores 200-220 thousand tons of organic waste annually. In 1994, a biogas production project was started to collect and utilize the landfill gas. Over time, 10 km of gas filters and 5 km of connection pipes were installed. Two cogeneration heat and power stations were commissioned in 2001 and 2004 to produce electricity and heat from the biogas. Currently, the project produces up to 5.5 MW of heat energy and supplies it to local energy companies. The landfill gas project reduces carbon dioxide and other emissions while utilizing a waste product for energy production.

1. How to use landfill gas
for production of
electricity and heat
INDREK TIIDEMANN,KÅRE
LÖFGREN

2. EUROPE

3. Estonia


Total area - 45 th km2
Average temperature





January 1996: - 7.0 oC
July 1996: + 15.0 oC
Population 1.345 mln
Population density 30 inhabitants per km2
Currency EURO

4. TALLINN PÄÄSKÜLA LANDFILL

Tallinn - the capital of Estonia, is the largest
town in Estonia with the population of app.
400,000 inhabitants.

Annually 200 - 220 thousand tons of organic
waste was generated in Tallinn, which was
stored in the Pääsküla landfill.

The Pääsküla landfill was opened in 1962 and
today its area occurs about 25 ha with the
average height of garbage layer up to 40
meters.

5. LANDSCAPE of PÄÄSKÜLA
LANDFILL

6. BIOGAS PROJECT
Yesterday’s waste...
...energy today

In 1994 the gas company Eesti Gaas Ltd
and some private investors, AS Terts,
started to carry out a biogas-producing
project at Pääsküla,Tallinn.

In 1994 3000 meters of gas filters and
1000 meters of connections pipes was
installed.

Today these numbers are 10 km and 5 km.

7. Biogas production company in
Pääsküla landfill

KL-Project OÜ was established in 1997.
Owner of KL-Project OÜ is :
 Indrek Tiidemann 100% of shares,
Estonia.


11. View of filter
and transport
pipes

14. Scheme of biogas pumping station

16. BIOGAS PROJECT
Yesterday’s waste...
...energy today
Estimated biogas
output (real output)
Estimated heat
production (real
production)
Methane content in
biogas
1000 nm3/hour (up to
800 nm3/hour)
5 MWh (up to 5,5 MWh)
Total production of
heat energy (sold)
9-10 GWh/year (20052008)
CH4 content about 58 %
(2008), (presumed 50%)

17. Production

Heat and power are supplied to local
energy companies:

Heat - ADVEN AS

Power - BALTIC ENERGY PARTNERS
OÜ

18. Cogeneration heat and power station
First cogeneration heat and power station
(CHP) was commissioned on December,
2001.
 Second CHP was commissioned on
November, 2004
 Installed ordinary Otto gas engines made
by company Jenbacher (Austria)
 CHP electrical output is 836 kW and
thermal output is 1050 kW each.


19. Cogeneration heat and power plant in
evening light

20. Fragments of CHP

21. Environmental benefits of CHP

Emission reduction (ton CO2 eq/year):

- Annual basis → 36 387

Reduction of NOx emissions about 150 tons and of
SO2 about 400 tons per year.

In 2001, 3.28 million m3 of landfill gas (with 59%
CH4 content ) was collected. This amount
corresponds to 1521 tons of CH4.

22. First flame of gas in flare

23. Future trends and goals

Pääsküla landfill was closed in 2004 and covered during
2005-2006.

Biogas amount was expected to increase up to 1000 nm3/h
and it increased,but today’s reality is about 300 m3/h,due to
fact that methene content is decreasing.

Similar to Pääsküla horizontal biogas collecting systems in
several places in Estonia 2005-2014 (Väätsa, Uikala,Paikre,
Viljandi) was designed and constructed by KL-Project OÜ.

Some more gas collecting systems are under design.

24. Cooperation with partners


Joint work with Swedish investor has given new
horizontal biogas collection tubes technology,
1994-2014
Project developer KL-Project Ltd (100% shares
belong to Estonian investor Indrek Tiidemann)
handles all projects.

25. Cooperation with partners

From technological side KL-Project Ltd
offers to potential partners:
 know-how
for building and running horizontal
trenches biogas collecting system and system
monitoring.

From management side KL-Project Ltd
offers to potential partners assistance to
communicate with local authorities.

26. Cooperation with partners

We are looking for new partners and
financial assistance:


new potential biogas (CHP) projects.
KL-Project Ltd is opened to all types of
cooperation.

27. Photos of friendly consumers

32. Thank you for your attention!