
I refer to Martin Williams' letter "(Mega incinerator project being driven by vested interests", April 26).
Waste means inefficiency and misallocated resources. A zero waste approach is a worthy and essential goal. Through the Urban Environmental Accords programme, more than 100 city mayors worldwide have committed to sending zero waste to landfills and incinerators by the year 2040 or earlier.
The implication is that existing waste incinerators should be retired, and no new incinerators or landfills should be constructed. Landfills are the biggest source of man-made methane emissions and the impact of landfill emissions in the short term is grossly underestimated. Methane is over 70 times more potent than carbon dioxide over a 20-year time frame. The practice of landfilling and incinerating biodegradable material such as food waste, paper products, and builders' trimmings should be phased out.
The climate can be protected and soil restored by composting these materials.
Incinerators emit more carbon dioxide per megawatt-hour than coal-fired, natural-gas-fired, or oil-fired power plants. Incinerating wood, paper, building debris, and leftover food has a negative effect on the climate.
Comprehensive government policies are needed to engage in climate change mitigation strategies such as waste reduction, reuse, recycling, composting, and extended producer responsibility.