Waste & recycling

December 2, 2008

From the Dump to the Pump

Filed under: Landfill gas, liquid bio-methane — buildeco @ 4:36 am

methanecarfuelgasrecIn collaboration with Gasrec, the first commercial producer of liquefied biogas (LBG), Hardstaff Haulage became the first major haulage company in the UK & Europe to use natural gas recovered from landfill waste.

Though the Hardstaff group have been using natural gas to power a large proportion of their own fleet, this is another first.  Trevor Fletcher, MD of the Hardstaff Group comments “This is a major milestone in Hardstaff’s history. With a strong orientation to work in harmony with the environment we are committed to reducing our reliance on fossil fuels and improving the effect our business has on the environment.  LBG is a viable renewable alternative to fossil fuels which will significantly reduce our CO2 emissions even further.”

Portal Gas Services, a member of the Hardstaff Group of companies, has formed a partnership with Gasrec to manage the logistics and bulk transportation of their LBG.

Landfill gas forms naturally from decomposing rubbish, and is normally flared to render it harmless, but increasingly landfill operators are utilising it as an energy resource.

This innovation in green fuel technology is turning what was previously regarded as a source of environmental blight – landfill waste – into an opportunity for companies to save money while bolstering their green credentials.

The new fuel, liquid bio-methane, will enable organisations to make significant savings on fleet fuel bills. The new fuel is potent enough to power even heavy vehicles with Sainsbury’s trialling the product with the view to roll it out to its entire fleet. Any vehicle equipped to operate on liquefied or compressed natural gas can also use LBM, but Gasrec claims it is even greener, offering twice the reduction in CO2 emissions compared with these other alternative fuels, while burning far more cleanly than diesel.

Once at full capacity, Albury could produce 5,000 tonnes of LBM annually – enough to fuel up to 150 HGVs or 500 LGVs for a year. And Gasrec envisages opening several plants to process 50,000 tonnes of LBM a year within three to four years.

As the processing does not involve distilling complex hydrocarbons LBM fuel is also cheaper than diesel – it is both cost-effective as well as beneficial for the environment

Additionally LBM is not sourced from potentially unstable regions such as Russia and the Middle East. ” So Gasrec can fix the price for a time that gives customers visibility of costs” explains James Ingall, Gasrec finance director.

This is borne out by Trevor Fletcher, managing director of Hardstaff Group, which not only distributes LBM but also uses it to run most of its dual fuel trucks.

“As a fleet operator we only considered cost-effective, reliable and sustainable alternative fuels that would lessen our impact on the environment. We chose natural gas and renewable methane, derived from household waste, because it satisfied all these requirements.”

Ref: http://www.gasrec.co.uk/

September 17, 2008

MAJOR NEW RECYCLING PROJECT TO TARGET SMALL BUSINESSES

Filed under: Recycling — buildeco @ 3:12 am

Environment and Conservation Minister Jay Weatherill has announced a $3million recycling initiative to help small businesses recycle more material.
The “Recycling at Work” program is aimed at helping smaller businesses get involved with recycling materials that until now have been going to landfill.
The two-year, $3 million program will offer grants for waste collection companies to help them introduce a wider range of recycling services for small to medium size enterprises.
Mr Weatherill said the program was aimed at getting the practice of recycling to take off in small businesses in the same way it had in households.
“We aim to repeat the outstanding success achieved with household recycling, where the introduction of 3-bin collection systems has resulted in the doubling of the household kerbside recycling rates in the past four years,” Mr Weatherill said.
“Of the 1.122 million tonnes of waste generated in the commercial and industrial sector, 872,000 tonnes is recovered for recycling, leaving about 250,000 tonnes of resources such as paper and cardboard, plastics and metal still dumped in landfill.
“Until now, mainly for reasons of scale and efficiency, smaller businesses keen to recycle have been limited to paper and cardboard. This program will transform recycling for smaller enterprises by enabling these businesses to access for the first time efficient recycling services for organics and recyclables such as plastics and metals.”
A major feature of the program will be funding for the purchase of many more recycling bins.
“In 2006-07, South Australia recycled 2.43 million tonnes of material, sending 1.14 million tonnes to landfill – representing a diversion rate of 68 per cent,” Mr Weatherill said.
“However if we are to achieve South Australia’s Strategic Plan target of reducing waste to landfill by 25% by 2014 we need to introduce improved recycling services for businesses. With the landfill levy acting as a disincentive for waste collection companies to send their waste to landfill it is in their interest to look at more cost effective options for collecting and processing commercial waste and doing their bit for the environment.”
The program is supported by $800,000 in funding from the National Packaging Covenant. The program guidelines are at www.zerowaste.sa.gov.au (click on ‘Grants’).

Methane leak from Vic landfill endangers homes

Filed under: Landfill gas — buildeco @ 1:07 am

Methane gas leaking from a former landfill in Victoria is potentially explosive and endangering homes in Melbourne’s south-east suburb of Cranbourne. Authorities have urged residents living within 250m to evacuate as concentration levels of methane trapped in the wall of a home were found to be about 60%. Dangerous pockets of the gas, around 20%, were also found in the ground under the house, however the main concern is that as gas disperses to between 5% and 15%, it could ignite..

The Country Fire Authority (CFA) managing the situation urged residents from some 230 households in the Brookland Greens estate to move as methane levels in some utility pits in the estate have also been found higher than EPA guidelines.

The council-run Stevensons Rd landfill operated between 1996 and 2005, with approximately 1.1 million tonnes of municipal waste deposited. The unlined landfill has been capped, and groundwater and high leachate levels within the landfill have flooded gas extraction bores, making them less effective – adding to pressure for gas to migrate from the site.

Casey Council apparently foresaw potential problems from the site and objected to developers building so close to the landfill, but had its push for a 200-500m buffer between residents and the landfill overturned at the Victorian Civil and Administrative Tribunal in 2004.

According to a notification on the Casey Council website, the CFA says there is a “very real risk” of explosion.

“Based on this information, the CFA believes that the situation has escalated as the level of methane being emitted from the landfill is continuing rather than decreasing.”

The council is now trying to improve gas capture to stop the methane migration.

“One of the options is the possibility of installing a series of vertical/horizontal gas extraction wells around the boundary of the site, and this may commence as soon as the next few weeks,” says Casey’s director of infrastructure services Ray Butler.

Some residents who have chosen not to evacuate are being advised to ensure all confined spaces are adequately ventilated, report any gas build up, seal gas pipes at the point of entry to the home, and to avoid using ignition sources in confined spaces.

The CFA, Victoria Police, Department of Human Services and EPA Victoria are monitoring the gas levels and taking mitigation steps such as venting confined spaces and storm water drains.

With up to 1,000 homes affected, figures of approx $100 million are being suggested to remedy the situation.

September 10, 2008

Introducing the Waste Management Assoc of Aust

Filed under: Uncategorized — buildeco @ 1:25 am

The Waste Management Association of Australia will shortly be joining us to blog here on all areas of waste and recycling management.

Environmental awareness has seen the waste management industry undergo unprecedented changes in recent years with increased demand for integrated resource management services, as a result of the pressing need to reduce landfill and greenhouse emissions, along with preservation of our precious resources.

From creating Energy from Waste (EfW) (a viable solution for recovering resources and reducing the use of fossil fuels as energy sources) to recycling, compost, bio solids and alternative waste technologies, the WMAA has over 1,000 members, representing more than 3,000 individuals, in the waste and resource recovery industry.

The National Divisions of WMAA are:

  • Compost Australia
  • Landfill
  • Construction and Demolition
  • Waste Education
  • Energy from Waste
  • Biohazard Waste Industry Australia and New Zealand (BWI) (formerly ANZCWMIG)
  • National Carbon Committee

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