You might be wondering what to do with a UV lamp, since it contains mercury. UV lamps only contain small amounts of mercury, so they can be disposed of safely. In fact, you can recycle a UV lamp just like you can recycle a fluorescent light bulb. This is the best way to dispose of your old UV lamps as it allows the mercury to be reused in other applications. Your local recycling center or hardware store might have a section for recycling used UV bulbs.