Current and future treatment methods for APCR from waste ...

Current and future treatment methods for APCR from waste incineration

Langøya Nature

• 300 different types of flowers • 20 different bee and wasp species • 100 species of spiders • 600 different species of butterflies • 40 different species of birds • 4 foxes

NOAH and Langøya History

• 1600 - 1800s: Lime kilns, agriculture

• 1895 – 1985: Christiania Portland Cement (later Norcem) buys the island and starts excavating limestone

• 1985: Norcem shuts down limestone activities

• 1991: Norsk Avfallshandtering AS is established by Parliament

• 1993: Norsk Avfallshandtering aquires Langøya from Norcem

• 2003: NOAH AS (formerly Norsk Avfallshandtering) is sold to Gjelsten Holding

Our Mission • Expertise and technology to treat hazardous waste and deposit the

residuals

• Rehabilitation, to rebuild the island and complete the process of rehabilitation

• In Norway NOAH still has the role as the national treatment facility, also serving the Nordic Countries

• NOAH is continuously working towards recycling more of the waste we treat

Limestone quarry South

Health, Environment and Safety (HES) • Operating/emission permit from Norwegian authorities renewed 2014 for the

remaining life time

• ISO 14001 certification from February 2004

• Zero accidents since May 2004

• Absence < 2 %

Permits and key figures • Permit from the Climate and Pollution Agency (Miljødirektoratet)

o 500 000 tonnes of inorganic hazardous waste o 500 000 tonnes of non-hazardous waste

Employees : 75 Turnover : MNOK 550 EBT : MNOK 120 Owner : Gjelsten Holding AS

Fly ash Can be received by silo truck

Ferry From Holmestrand to Langøya

HUB in Horsens Denmark For transport by ship to Langøya

Plans for new HUB in Helsingborg Operating 2017

Wetted and dust free APCR unloading From vessel at Langøya

Dry bulk shipment Capacity up to 1 000 MT

And of course big bags by ship or truck

Business areas

Industrial waste Contaminated soil Fly ash from incineration plants

Building and demolition waste

Sediments and offshore waste

Sulphuric waste acid from pigment industry Important part in R5 definition of APCR treatment

Neutralisation process Important part in R5 definition of APCR treatment

Sulphuric acid is neutralised by using alkaline fly ash from incinerators of solid municipal waste

• 200 000 m3/year 25 % H2SO4 • 300 000 tonnes/year fly ash

Properties of fly ash • Fly ash contains: • 5-20 % CaO (pH 12.2-12.4) • 1-3 % heavy metals

• Leaching of heavy metals is high in alkaline environment

• pH needs to be lowered to about 10 to reduce leaching of

heavy metals

• CO2 is an excellent acid to neutralise fly ash • CO2 + CaO → CaCO3

• CaCO3 ensures an «infinite» pH buffer effect

Heavy metals incorporates in the Fe-hydroxide phase with aging

Heavy metals incorporates in the Fe-hydroxide phase with aging

End use as foundation for rehabilitation of Langøya

Remaining capacity

• Hazardous waste : 8 years – 4.0 mill MT

• Non hazardous waste : 14 years – 5.0 mill MT

Future Langøya

Future Langøya

Om NOAH

Fully rehabilitated in 2050

NOAH and Norcem Cooperation for using old underground mines

360 km mine tunnels

20 million m3 available space

Successful testing of NOAH production in the mine ended

New reactor using CO2 from Heidelberg Cement

Reaction kinetic experiments

Fly ash mixed with water

• 40-60 kg

Gas

• 18 % CO2 and 82 % Argon

• Heated to 0-20 oC prior to reaction

• Fixed bed reactor

• Dinner = 188 mm, H =1600 mm bed

• Flow

• 50 l/min

• Assuming 90 % packing → 27 cm/s

(residence time: 5 seconds)

Gas in

Gas out

CO2 sensor

Results

CO2 cont. flue gas: 18-19 % Gas flow: 300 Nm3/h Fly ash: 1140 kg

Thank you for your attention!