Home Improvement Questions? Ask a Handyman for Answers
Hi. You mean you don't have a waste line near? I would assume you have toilets in the bar at least, can you tell me more about the difficulty to raccord the two?
Yes, an elevated floor might be enough (this is often used when a concrete slab is present). Depending on the things that can enter the drain, an over kill solution may be a pump to send it by the ceiling. A self containing solution would be like a mini septic tank and require to be emptied from time to time (it depend of the volume so send to it to know if this would be a solution or a problem for you).