Question for Off Grid RVers?

A friend wants to go off-grid with his RV and ask me this question.

When in an off-grid situation what do you do with your black water.

Composting toilet?  Off-grid could mean lots of things.  If you are stationary or have a location to have a hot compost pile  -or at least will be someplace advisable to start one before long, a Jenkins-style bucket commode might work.  
There are also other commercial models that probably generate less mass.  

I'm not an off-grid rv'er...but I'll chime in if that's OK.

Basically what all that babble below says is, just do the BUCKET trick :)

The idea of a "black" water tank just doesn't vibe with me anymore - length of stay surely is a factor here but I've found that using three 5 gal buckets w/ lids, a $5 bucket toilet seat, and fine wood chips will get a person by for a week and then some. Add or remove bucket # as needed.

1 bucket is full of the chips you use to cover each time you go...the other two buckets are empty w/ a little layer on bottom though to start. If you'll be able to bury more than once a week then forget about the 3rd bucket.

It's a nice setup if basing out of a vehicle and worth making the room to store it. I put a couple buckets in my truck bed if I'm going out to work for a few days. I dump it into a manure composting pit that gets buried when I get home.

It's very simple, not even bad smelly, essentially free, and completely organic other than the containers used to handle it from one hole to the other lol.

Now there might be some aspects of this people don't like, but luckily I have no sewer and have realized there are decent ways to handle our dirty business that doesn't need water and chemicals. A little land, an interest in growing things, liking to dig, and having mulch on hand helps the process.

If I bought a brand new RV, I would remove the black water tank and toilet in place of a woodchip bucket right away!

Back in the day I did have two campers, and did the whole black tank, chemicals, stinky thing a few times but had neither of them long enough to get used to enjoying the idea of using the water toilet/ back tank.

At this point I don't see the need for a flushing toilet anymore, and if using nice soaps on dishes and shower then why not all drains lead to the garden? Ok I'm getting far off subject here but I'm still kind of confused why I spent 38 years flushing my urine and feces down into a sewer system with thousands of gallons of clean water that probably 70% of the world would kill to drink straight from the toilet bowl.

Not sure how far "off grid" the RV'er is going ... living off-grid for several months/years, or just a few weeks, and where. Also not sure how Jenkins-savvy (poo-handling) the RV'er is, or Oasis-savvy for greywater. Nor what the neighbor situation is (none within visual range is best). Finally, we assume the RV won't move all that much ...

Usually the RV has built-in systems, so there is a toilet, shower, sinks, all of which lead to black water tank and/or possibly a grey-water tank. Not much room for poo/pee buckets. To use the systems that are already built-in ... implement something like:

1. All grey-water systems leading to the grey-water discharge pipe, should just be extended with a drain hose to the nearest discharge point, which is hopefully a sand-trap or other method of catching minor stuff, before allowing nature to get rid of the rest; see Oasis book for details.

2. All black-water systems, leading to the black-water discharge pipe, should be extended with a drain hose to a portable black-water tank on wheels; this is for "emergency" poo situations (while off-grid). Of course, as mentioned by others, reduce all of this before anything gets into the RV black-water system with separate poo & pee buckets. There could be an external shed hosting storage, poo/pee buckets and such. All the pee goes to watering oasis-style systems in the off-grid location. All the poo goes to jenkins-style poo composting; see Jenkins book for details.

3. The emergency black-water storage tank on wheels can be hauled via trailer to a dump station, and dumped as normal. Normally, these are used in RV parks, so the RV doesn't move as much, but can be easily adapted to off-grid scenarios.

Same for fresh water in ... water storage tank, water pump, and then you refill the RV fresh-water holding tank. Store everything in the shed, or on the trailer. Same for propane ... swap bottles, use trailer for hauling.

If all thought out in advance, the RV shouldn't have to move. Unless, of course, neighbors do spot you, turn you in to the AHJ police, and you have to make a (slow-speed) getaway in the RV ...