Brownwater RV filtration

Just finished recently creating a brownwater filtration unit for my new trailer. More pictures to come, but here are the basics! I reuse my wastewater from my bathroom sink to fill my toilet (urine only). It is then passed to a lava rock bio-filter and subsequently to a limestone and lava rock planter.
Greywater recycling system. All greywater from sink is used to fill toilet bowl. No fresh water is used to fill toilet. The handsoap and toothpaste also helps to clean the bowl each time you flush!



First stage of Brownwater filtration. Barrel filled 3/4 full of lava rock to an inch above maximum water line. Leads to stage two.

Interior view of first stage of Brownwater filtration. Lava rock for substrate and a downspout for efficiency.


Two shots of the Second Stage filter with Lava Rock Planter bed leading into the the Third Stage planter and evaporation tray.