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Bus Discussion => Bus Topics ( click here for quick start! ) => Topic started by: Darkspeed on June 26, 2015, 08:11:25 AM

Title: Beyond the Black Tank - Composting Toilet
Post by: Darkspeed on June 26, 2015, 08:11:25 AM
I have been living with the black tank for a number of years full time in the Airstream and im now thinking of toilets in the 4106 build.

I am thinking of ditching the need for the black tank, toxic hose , mess of dumping tanks, and that accidental holding the lever down too long and gassing out everyone in the bus.

Im thinking the weight of the black tank , the space it takes up, the fuel of hauling it and its contents.

Anyone using a composting toilet? I know the Schoolie guys do..

Any thoughts?

The built in fan draws 2.5 watts @ 12vdc

http://www.separett-usa.com/ (http://www.separett-usa.com/)

https://www.youtube.com/watch?v=duoT34h5dzI (https://www.youtube.com/watch?v=duoT34h5dzI)
Title: Re: Beyond the Black Tank - Composting Toilet
Post by: LuckyChow on June 26, 2015, 09:30:25 AM
It's not in yet, but it's going in soon.  I ran the 24V electrical for the fan a few weeks ago.  The one I believe best fits RV usage is Nature's Head.  I'm not sure which topic stirs up more comments, composting toilets or tire age.   ;D
Title: Re: Beyond the Black Tank - Composting Toilet
Post by: eagle19952 on June 26, 2015, 10:18:45 AM
Quote from: LuckyChow on June 26, 2015, 09:30:25 AM
I'm not sure which topic stirs up more comments, composting toilets or tire age.   ;D

oil...
Title: Re: Beyond the Black Tank - Composting Toilet
Post by: Darkspeed on June 26, 2015, 10:36:48 AM
Quote from: LuckyChow on June 26, 2015, 09:30:25 AM
It's not in yet, but it's going in soon.  I ran the 24V electrical for the fan a few weeks ago.  The one I believe best fits RV usage is Nature's Head.  I'm not sure which topic stirs up more comments, composting toilets or tire age.   ;D

Why Natures Head?
Title: Re: Beyond the Black Tank - Composting Toilet
Post by: HB of CJ on June 26, 2015, 03:29:44 PM
Have you ever smelled a composting toilet?  How does it handle very loose bowel movements?  We had enough problems with a supposed state of the art composting toilet in our cabin.  I for one do not see how it would work driving down the road.  Talk about smog.  Just me.  HB
Title: Re: Beyond the Black Tank - Composting Toilet
Post by: bigred on June 26, 2015, 06:32:33 PM
Am i dreaming or did Holiday Rambler not have some type of self composting toilet years ago???
Title: Re: Beyond the Black Tank - Composting Toilet
Post by: LuckyChow on June 26, 2015, 07:43:37 PM
Quote from: Darkspeed on June 26, 2015, 10:36:48 AM
Why Natures Head?

From the many, many reviews I've read, it works very well, but so do others.  The one thing it has going for it over a couple of the others is size.  It's about the smallest foot print, but there are plently that are bigger.  There have been a good number of sail boat folks change over to it.  Their space constraints are generally tougher than ours in a bus.

Here's a popular Youtube video on the Nature's Head posted by a couple of RV'ers.   

https://www.youtube.com/watch?v=_E2xOoNov9s (https://www.youtube.com/watch?v=_E2xOoNov9s)
Title: Re: Beyond the Black Tank - Composting Toilet
Post by: luvrbus on June 27, 2015, 05:13:02 AM
One RV did have the electric incinerator type composting toilet BigRed forgot which those did stink and were power hogs.From all I read the newer type are easy to work and clean without the smell
Title: Re: Beyond the Black Tank - Composting Toilet
Post by: Lin on June 27, 2015, 10:10:05 AM
Looking at the Nature's Head, I don't like the fact that you will have to carry the urine container through your kitchen and living room almost daily in order to find a toilet to dump it.  I suppose that boats just dump it overboard.

Does it compost feces so quickly that you will not have to dump it at all?
Title: Re: Beyond the Black Tank - Composting Toilet
Post by: Dave5Cs on June 27, 2015, 11:29:24 AM
Lin just plumb the wet hose to the passenger side with a solenoid release and then make sure URINE the right lane before you push the button!.... Just watering the trees eh!.... :o
Title: Re: Beyond the Black Tank - Composting Toilet
Post by: Darkspeed on June 27, 2015, 11:41:09 AM
Quote from: Dave5Cs on June 27, 2015, 11:29:24 AM
Lin just plumb the wet hose to the passenger side with a solenoid release and then make sure URINE the right lane before you push the button!.... Just watering the trees eh!.... :o

Marking ones territory... I claim this half of the highway..
Title: Re: Beyond the Black Tank - Composting Toilet
Post by: bigred on June 27, 2015, 12:00:29 PM
You mentioning schoolies using these toilets reminded me of one who came through our home town a few years back.He had an old IH fe gas burner.Evidently ,he would go to a location ,get a job at a fast food joint for a few months then move on.For a black tank,he was using an opaque white 55 gallon plastic drum.On those old IH conventionals .they sat real high in the back .He had strapped the tank up behind the rear wheel running front to rear.Now the bad part was ,you could see half of the tank below the side of the bus and you could see through it like a screen door.He drove this contraption to work every day and parked in in the lot behind the restaurant.If you went there during their busy time and had to park next to that thing ,you could have lunch and watch the submarine maneuvers at the same time !! 
Title: Re: Beyond the Black Tank - Composting Toilet
Post by: TomC on June 27, 2015, 09:55:02 PM
Composting toilet-another appliance to go wrong. Most are not allowed in California. There is nothing more simple than a gravity flush toilet to a tank, then emptying it every 2 weeks. Good Luck, TomC
Title: Re: Beyond the Black Tank - Composting Toilet
Post by: RJ on June 28, 2015, 08:41:19 AM
Todd -

My MC-5C has a 100 gallon fresh water and a 100 gallon grey/black tank in the rear baggage bin.  Straight shot from toilet into g/b, tank is vented into the RR wheel well.

Since the tanks are relatively big, after dumping, I put about 5 gallons of water in the G/B tank, then add a septic tank pill I get from Home Depot/Lowe's.  Wait until tank is over 1/2 full before dumping again.  So far, no weird smells, septic pill seems to keep the odors at bay.  Uses no power other than a tiny bit from the water pump when you flush, either the toilet, or the spray rinse nozzle built into the G/B tank.  Location of the dump valve/drain is convenient, there's a fresh water spigot to rinse the hose if dump station doesn't have one, and there's a nice PVC pipe capped on both ends that's mounted on the bay wall to hold the hose when not in use.

Simple system that works w/o complications - KISS principle, if you will.

If you intelligently layout the fresh/holding tanks in the rear bin, you should still have plenty of space for other uses.  Weight is not an issue, a full 100-gallon freshwater tank weighs less than six paying passengers in revenue service.

Is the interior gutted right now?  Is the coach driveable?  If the interior's gutted, and you can drive the coach, empty the bays of "stuff", fill the fuel tank and run it across a set of scales.  Should be somewhere around 20K or slightly less, empty.  Coach can handle up to 32K, so you've got plenty of capacity to work with.  Most '06 conversions come in at around 24-26K.

One other thought - For the difference in cost between a composting and regular SeaLand, for example, you could use that extra $$ for something else that Mama wants.

FWIW & HTH. . .

;)
Title: Re: Beyond the Black Tank - Composting Toilet
Post by: Lostranger on June 28, 2015, 09:11:01 AM
I have nothing against composting toilets, but I don't want one in my bus. Several of our friends have had trouble in off-grid situations, but those issues may have been resolved.

My flush toilet with 105 gallon combined waste tank makes up one of my favorite systems on the bus. We also carry 100 gallons of fresh water. My only regret is buying a plastic toilet. We will remedy that with a Dometic porcelain toilet before long.

Our system is simple and inexpensive. It's well vented and produces no odor. It's easy to dump. Almost nothing to malfunction. Suits us in every way, but by all means go with what suits you.

Jim H.
Title: Re: Beyond the Black Tank - Composting Toilet
Post by: mike802 on June 30, 2015, 07:55:27 AM
I think it sounds like an excellent idea!  In the long run I think it would be less complicated than everything involved with a standard RV toilet and environmentally friendly to boot.  Although by environmentally friendly, I mean after the waste has been completely composted.  I don't think just tossing the dried waste in the trash is a good idea, it may be better to have a special container to keep it in and add it to a composting system when returning home.  This guy has a good idea for composting human waste.  https://youtu.be/W6jsMx9yGnw
Title: Re: Beyond the Black Tank - Composting Toilet
Post by: Wild Bill on June 30, 2015, 03:54:18 PM
I bought a Separett because I don't like dumping and don't like the thought emptying a pee can either, (natures head) ,  Separett pee just plumbed into grey water.
Hope it works good, toilet going to the island this summer, I have come to the realization Without the MC5   :'(
Title: Re: Beyond the Black Tank - Composting Toilet
Post by: HB of CJ on June 30, 2015, 07:31:26 PM
Now I am wondering if you all are just pulling our legs?  You are joking here right?  We had nothing but problems with our factory build odor free, (yeah ... right!) composting toilet in our solar cabin.  But ... and this may be very important, this was in about 1995 or so.  A very long time ago.

Have things so greatly improved in all aspects of a down-the-road composting toilet that it would actually work in a Bus Conversion?  Perhaps such improvements have been made.  But .... I for one don't see how.  Big, messy, smelly, buggy, rank, expensive and etc.. comes to mind.

Just me.   Respectfully.  HB of CJ (oldest coot)
Title: Re: Beyond the Black Tank - Composting Toilet
Post by: Darkspeed on June 30, 2015, 08:09:55 PM
Strange.. Everyone with a Separett that I talk to say they are very happy with it and it is a great improvement over the typical black tank system.

I have talked to bus , rv, and tiny house people about it.

I wonder how much the technology has changed.. I know the separation of #1 & #2 is a new thing as the old units mixed in the same tank.
Title: Re: Beyond the Black Tank - Composting Toilet
Post by: LuckyChow on June 30, 2015, 08:36:06 PM
Quote from: Darkspeed on June 30, 2015, 08:09:55 PM
I know the separation of #1 & #2 is a new thing as the old units mixed in the same tank.

And I am told, that is the secret of why they work well now.   ;D
Title: Beyond the Black Tank - Composting Toilet
Post by: digesterman on July 01, 2015, 02:38:56 PM
I think if they worked all that well a lot more RV people would be using them, but as we know that is not the case
Title: Re: Beyond the Black Tank - Composting Toilet
Post by: mike802 on July 01, 2015, 05:43:21 PM
I have absolutely no experience with composting toilets, but if the new ones work well, I would be very interested.  In my conversion I have already started installing a normal RV toilet, I did'nt really know anything about composting toilets when I started, but I was familiar with the old RV type systems and its a little late for me to back track now, but I am very interested in hearing what others have to say on the new ones.
Title: Re: Beyond the Black Tank - Composting Toilet
Post by: Cary and Don on July 02, 2015, 07:44:20 AM
If you see Gone With The Wynns blog, they have a complete demonstration of their Composting Toilet.  No electric required. It seems like a lot of work, but they have been using it for years and even ordered one in their new RV.

Don and Cary