The law prohibits, in more and more places, the discharge of organic waste in the lagoon and near the coast.
In Polynesia this equipment is mandatory in most lagoons as well as in marinas (the Moorea PGEM has made it mandatory in the lagoon since 2004)
The newer sailboats are all equipped with black water tanks. Yours isn't yet? Some installation tips.
Don't have room to install a black water tank? Install a soft one! easier to house, it is an economical, discreet solution, respectful of the environment and legal standards.
The idea and interpose a flexible and waterproof tank between your toilet and the hull valve.
The valve is closed, the materials passing through the toilet are held in the tank.
Vanne open, they go to sea (authorized more than 3 miles from the coast).
At the port, the drain is done by suction by a special nable mounted in the pass.
Two recommended solutions:
Tank above the toilet, filling by the toilet pump, evacuation at sea by gravity, at the port by the installation of the marina.
Tank under flotation, filling by the toilet pump, evacuation at sea by pump (electric or manual), at the port by the installation of the marina.
Depending on how the toilet will be used, options can be added: back valve, vent, odour filter, pipe diameter adapter, etc.
Technical features.
Tank:
Dimensions: bespoke, at the sides of the container (team, chest): no loss of space. Made in 2.4 mm thick double-skin PVC, supple, imputrescible, hot welded.
Glued and bolted nozzles for standard toilet hose (diam 38 mm inside, adapter if needed).
Welded attachment straps surrounding the tank (no snatching).
The tank being flexible, the level of filling is immediately visible, without the possibility of malfunctioning a gauge in a muddy environment. No surprises to worry about.
Circuit:
Ringed anti odor pipe diam 38 mm.
Bridge nable marked "WASTE."
Double stainless steel collar with each connection of the pipe.
Options by use:
Anti-return valve, if a hunting return is possible (depending on the configuration).
Airing by vent, odour filter, if the tank must stay long without being emptied.
Electric or manual pump, if the tank is under the flotation, for draining.
Note: Methane, a product of onshore black water fermentation, is odourless and twice as light as air. Unlike butane or propane, which are heavier and accumulate in the bottom, this is not to be feared with methane.
In addition, in salt water, fermentation is slowed down.
Tips for using:
As before, only put digestion products in the toilet.
Ideally, the paper will have a separate garbage can, as is done in many countries. Alternatively, choose a paper that is well-deformed with water (put a sheet in a glass of water, wait and stir to see if it remains in sheet or disperses into particles).
To clean and de-startthels, continue to use vinegar but avoid chlorine (Javel) even when solutioned in rinse water (this does not affect the tank but the flora and fauna).