The Waste Recycling Center allows you to manually convert batches of waste into energy, ore and water. The more waste you convert, the longer it will take to make the resources you want. The higher the level of the building the more waste can be converted in one process. You can also spend a small amount of Essentia to convert the waste instantly.
Playing tip: The Waste Recycling Center during the early stages of a colonies development can be an effective way to keep waste under control. The initial amount this can recycle per hour is about 1000. This amount though only increases by about 100 units per level. The trash production of a medium developed colony will fast outpace what this building can recycle.