The convention centre aimed to achieve zero to landfill status by the end of January 2010 as part of its bid to achieve ISO 14001 accreditation, but hit the target in October.
"The target for waste sent to landfill had been set at 25% for 2009, so its an enormous achievement that we've achieved that early, and in a relatively short space of time as we only opened in January 2008," said ACC Liverpool operations director Richard Alun-Jones.
He added that the venue's Green Dream Team of staff had helped fast-track the process.
New practices that helped ACC Liverpool achieve its landfill target include sending waste from exhibitions and conferences is to Orchid Environmental, where raw unsorted waste enters the plant and is sorted and recycled, or reprocessed into diesel biofuel.
The venue also sends all food waste to the local Widnes power station, PDM, where it is used to produce power for 10,000 local homes.
"What really appealed to us about working with PDM, is the fact we are contributing directly to the local region," said Alun-Jones.
ACC Liverpool won the Gold accolade for Best Sustainable Venue in C&IT's Hot List earlier this year.
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