Urine Diversion System for
The urine diversion option requires less maintenance than urinating into a bucket, which requires daily emptying of urine into a mulch basin. The urine diversion option consists of 3 basic assemblies: a urine diverter built into each barrel, a subsurface leaching chamber and an optional urinal for men. Perennial plant roots near the leaching chamber can uptake water and nitrogen in the urine.
The urine diversion option is described in the photos below. Also see materials list at bottom of page.
Notes on construction:
--#10 stainless steel fasteners are used for securing the urine diverter to the barrel, for securing the urine drain cable clamps to the barrel and for securing the men's urinal to whatever surface it's mounted on. Holes for these fasteners should be drilled using a 3/16" diameter drill bit.
--The two holes for mounting the urine diverter to the barrel should be centered on the front of the barrel, about 2" and 3" below the lip at the top of the barrel (see photo above). Inserting the urine diverter fasteners through these holes is easier if the holes are a bit larger than 3/16" diameter (7/32" is good)
--The hole for the urine drain hose to exit the barrel should be 1/2" in diameter and centered on the front of the barrel, about 12" below the top of the barrel.
--The urine drain hoses, one from the men's urinal and one from each barrel, will go into holes drilled near the top of the 5 gallon bucket leaching chamber. These 2 holes should be 1/2" diameter.
--Take care to be sure that hoses are level or downhill all the way from urine diversion funnels to leaching chamber. If not, air bubbles may form in uphill sections, preventing urine from flowing.
--Insert the hose into the funnel (this applies to both the urinal funnel and the diverter funnel), then press the hose into the rubber stopper. Use soapy water on the end of the hose and on the rubber stopper to help get the hose into the stopper. Gently press the stopper down into the funnel for a liquid-tight seal.
Notes on use:
--The urine diversion system so effectively keeps urine out of the toilet barrel that some urine or water may have to be poured back into the barrel periodically to maintain sufficient moisture for effective decomposition.
--Occasionally pieces of cover material may fall into the urine diverter. If so, remove the screen from the diverter, turn it upside down and spray it clean with squirt bottle used for wetting toilet paper.
--Check bottom of diverter occasionally to be sure rubber stopper around urine drain hose is snug. A loose stopper can allow excessive amounts of urine to enter the active barrel, causing anaerobic conditions and resulting odors.
Materials List for Urine Diversion System
Urine Diverter (per barrel):
--Funnel, FloTool Super Quick Fill
--Funnel, FloTool Giant #
--5 gallon plastic bucket, 1 @ $4.00
$4.00 (Hardware Store)