Well you need a "trash" pump. Probably 300+ to a consumer. Its pretty simple, you have a pit much like a sump pump pit. Pipe runs in, pump has a float. When the pump float risies it kicks on a switch and pumps up a pipe attached to it, then over, then down into your main sewer line. Needs a union on the pipe going stright up from the pump cause they do not last forever, you will be changeing the pump out usually about 5 years. They should have an alarm. Usually two wires attached to another float that you would zip tie to the pipe in the pit. So when it starts to back up the float will float up and the alarm will kick on so you know there is a problem before you make that last flush and have sewage runing all over your floor.