questions about unloading a pump

Good morning,

I bought a house and there is a little giant wastewater pump in the garage. I don't have any experience with these types of pumps so I have a few questions. One what are the possible applications for a pump like this? Could I build a pond/lake fountain with this type of pump? Does anyone know of where I could sell this thing? I haven't included any of the exact information because I know this is not the place to sell items. Thank you for your time and assistance.