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Inside Waste December 2024

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ISSUE 123 | DEC 2024/JAN 2025 Energy from Waste facilities get a bad rap because sometimes people don’t understand the technology. Image: Industryandtravel/shutterstock

27 Circular economy 30 BSC needs legislating 38 2025 WIRA awards

Commercial food waste collections coming to NSW By Mike Ritchie and Virginia Brunton, MRA Consulting Group

Melbourne councils look to EfW to solve residual waste woes By Inside Waste

PP: 100024538

ISSN 1837-5618

A recent application in New Zealand by South Island Resource Recovery (SIRRL), a company that is 60 per cent owned by China Tianying Incorporated, has been tasked to build an energy from waste (EfW) facility. The company’s application has been met with cynicism from some quarters. The SIRRL is calling the 365,000 tonnes of municipal and construction waste it will process as ‘sustainable’ land diversion. Some see the plant as an attempt at ‘greenwashing, and they raise concerns about air pollution, toxic waste, and greenhouse gas emissions, including from the 70-odd trucks a day delivering rubbish’, according to New Zealand’s Newsroom website. What wasn’t mentioned in the piece is that modern EfW facilities are designed with the purpose of disposing of residual waste, because

anything that can be reused or recycled has already been separated from the waste stream. In a paper written by Bernt Johnke titled Emissions from Waste Incineration, the author studied the amount of emissions a EfW plant produces. The conclusion Johnke came to was: An energy transformation efficiency equal to or greater than about 25 percent results in an allowable average substituted net energy potential that renders the emission of waste incineration plants (calculated as CO2 equivalents) climate-neutral due to the emission credits from the power plant mix. In other words, the amount of greenhouse emissions produced by an EfW facility are neutralised because of the amount of energy it returns to the grid that doesn’t have to be produced by a power station.

The biggest obstacle EfW plant developers have is persuading councils – some backed by antiEfW driven interest groups – to sign contracts that will deliver waste to the plant. This is because of the impression that these plants are nothing more than giant incinerators with little to no technology to stop millions of tonnes of CO2 being pumped into the air. Which brings us to Mick Cummins. Cummins is the CEO of Bayside City Council in Victoria and he led a process with eight other Councils to sign contracts to supply non-recyclable household waste to the new Maryvale Energy from Waste facility. Cummins said that the consortium initially had 16 councils onboard, but by the time it came to signing the contract, nine were left. Why did the others drop out? (Continued on page 14)

THE NSW Government is going to mandate commercial food waste collection (COFO). This is excellent for NSW, and the Minister Penny Sharpe and Premier Chris Minns are to be congratulated for this reform. For those of you who don’t know what we’re talking about, from July 1, 2025 large food waste generators will need to have a dedicated food waste collection system. Food waste will no longer be able to go to landfill. Food waste in landfill is a massive greenhouse gas generator, contributing most of the 11 million tonnes of greenhouse gases released from landfill each year. That is equivalent to the annual emissions of about 3 million cars. The key businesses that are proposed to be covered by the food collection requirement will likely include: 1. Supermarkets (with a floor area > 1,000m2) 2. Institutions including: • hospitals • correctional facilities • education facilities • childcare facilities • seniors’ housing 3. Hospitality including: • hotels and motels • registered clubs • food and drink premises including food courts The scheme is proposed to capture the biggest food waste generators in the NSW economy. (Continued on page 20)

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