I'm planning to install a convenience bathroom with a toilet and sink in my camp bunkhouse but the sewer line drop is roughly 5 feet vertical with a 40 foot run, far exceeding the 1/4" per foot sewer drainage recommended. The bunkhouse is not used frequently and summer only but freezing needs to be a concern. The water supply line is no problem since the pipes are installed down sloped and blown down every year before vacating. The 110v electrical system is 14 gauge wiring but do have 12 gauge wiring, if necessary, at the bunkhouse entrance. I used a 12v macerator on my trawler for offshore use which may be a solution for pumping to my 1K gallon tank but need a 110v system. I also heard about a dry(?) or evaporative processing system. I would like to hook the sink to such unit if possible. The dry system would be handy for rare winter time convenience but no running water would be available except bucket-use if needed. The planned toilet is 1.6 gallons per flush. Thank you.