current and future treatment methods for apcr from waste
TRANSCRIPT
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!