The firm is proposing to develop an in-vessel composting facility, which would manage up to 120,000 tonnes of organic waste, at its Runfold landfill site, near Farnham in Surrey.
The public consultation events were held on 16 and 17 January.
Business integration manager Mark Fletcher said: The exhibition was part of our pre-planning application consultation. It gave residents the opportunity to view our proposals, ask questions and provide feedback on the plans.
The comments that Sitareceived will help shape its planning application.
The facility, which would operate until 2021, would take organic waste that is currently being treated outside of the county.
Around 60,000 tonnes of compost would be created and this would be used to restore areas of the Runfold landfill site, reducing the need to import soil to the site.
The application has received a £1.5m award from the Waste & Resources Action Programme.
The proposal is speculative and is not connected to the contract that Sita subsidiary, Surrey Waste Management, has with Surrey County Council.
Sita is currently negotiating potential sources of organic waste, which includes both council and industrial outlets.
The firm hopes to submit a planning application to Surrey County Council in early 2009.