Black waste disposal

Discussion in 'Motorhome Chat' started by DavidG58, Jan 29, 2016.

  1. DavidG58

    DavidG58 Funster

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    we have a black tank, ours has a macerator on the inlet so everything is kind of blended on entry

    weekend after next we are staying on a site that offers serviced pitches with own grey waste disposal

    it also says it has no drive over dump option for tanks

    so, I have a question / moral dilemma

    can I let my mushed up black waste go down with my grey? my normal operation when dumping waste is to let black out through our own hose to gully or drain or manhole, then connect same hose to grey outlet and dump that to flush the drain and pipe

    we do not use chemicals and there are no more solids in our black waste than grey

    I carry a bucket and as yet unused cassette (nice to keep it that way) just in case I ever need to dump to traditional raised elsan dumps as this site has, so could do that, but as the grey waste almost certainly goes to sewer I cant see why the black cant go down the same drain, especially as it will be flushed with grey

    I am being slightly (quite a lot really) lazy, but we are off to France as we leave that site and I want to be empty

    I suspect if I ask the site they will be horrified that I have even asked, they will visualise a standard drop fill cassette full of lumps and paper, mine really is poo soup, so I wont ask but still might just dump it, I might just enquire where the grey drain is connected to, as I have an interest through work, there is a slim chance they might recycle it through the toilets, in which case it would be inappropriate to dump toilet waste to that area, but that is extremely unlikely

    the more I type I feel I have answered my own question, I shouldn't really do it just in case, so will keep cassette clean and take a couple of buckets to their elsan point

    Knowing my luck the site owner will enquire what I am doing and tell me I could have dropped in down the grey waste on my pitch :LOL:

    so, there you go, a pre-answered question, but I have spent my last 5 minutes typing so will not delete, but I do apologise for you wasting 3 minutes reading it :D
     
    Last edited: Jan 29, 2016
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  2. sdc77

    sdc77 Funster

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    Lol @ poo soup .. sounds much nicer
     
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  3. Badknee

    Badknee Funster

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    You have just wasted five minutes of you life you will never get back typing that effluent and I have wasted slightly less reading it and replying to it with this shite answer.:rofl:
     
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  4. GJH

    GJH Funster Life Member

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    As you have answered your own question and decided to do what you know is right then I would guess there is no harm in asking about using the service point. If it's OK you're on a winner and if it isn't you've lost nowt.
     
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  5. The Wino

    The Wino Funster

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    Don't know what the connection to the grey waste is like or how good a fall there is but it could be a bit smelly for the next user.
     
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  6. Dave and Ginny

    Dave and Ginny Funster

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    I would say you really need to ask the question and be sure. It would be wrong to assume that the gray and black waste end up in the same place as it would most likely do in domestic home environment. Even so, would you pour it down the kitchen sink?

    You cannot rule out the possibility that the gray water is recycled. If that were the case then the mixing of black waste with fecal containing harmful bacteria would not only be a hazard to health but also illegal.
     
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  7. DavidG58

    DavidG58 Funster

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    we do this over gulleys where available on sites and are always careful to direct the flow with our hose, unlike so many who just seem to get somewhere near and let it go, its particularly bad on the continent for this

    as we would be flushing it away with grey waste there is unlikely to be any residual effects at all visual or nasal (y) IMO grey waste often smells worse than poo, grey just stinks poo you tend to recognise it and it is more easily identified / accepted. WE do this at home over our own manhole connected to the sewer the smell coming up the drain is always worse that anything we add :)
     
    Last edited: Jan 29, 2016
  8. funflair

    funflair Funster Life Member

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    My guess is that the grey would go the same place as the black so worth an ask.

    Martin
     
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  9. DavidG58

    DavidG58 Funster

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    I think I have already covered all your concerns in my own mind and comments above, but in answer to the bit about pouring it down my kitchen sink, the answer is no, but I wouldn't pour my grey waste water down there either. (y)

    Poo blended with bio washing liquid has its own predictable smell, grey waste water IMO smells much worse, if we forget to push down the traps in our sinks and shower in particular before travelling we often have to stop and do it due to the pong o_O
     
    Last edited: Jan 29, 2016
  10. sallylillian

    sallylillian Funster Life Member

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    David, as I have come from an RV the use of tanks is normal, the idea of a cassette horrified me. My new Flair has a macerating toilet and a 170 litre "black tank" (option extra I considered must have) for the same slurry result as you. The Flairs waste pipes join together under the van with a 40mm spigot so I use the same techniques I employed on the RV. Dump the black first, and my tank has a fresh water flush so I give that 5 minutes too, then dump the grey so the pipes and drain get flushed through. I like the 40mm pipe it is less obtrusive than the 4 inch US RV pipe. For creating fall from the spigot I use the concertina pipe support that I had from the RV this has a gradual fall built in with decreasing leg heights so that deals with the gravity evacuation. What about 25 mm points up in the air or 50 metres away. I use the macerator pump that again I had on the RV. I have an adapter to take a short 40mm length into the pump and 100 metres of 25mm to run to the service point from the pumps exit. I don't need the macerating capability but it pumps for a great distance and or uphill so I have flexibility.
    As to your point on using a service point on a pitch that might be described as grey, I believe that you answered that, the site do not want cassette users trying to squeeze their waste into the pipe. And I have seen many who have tried and just left their waste around the drain. It only takes one, but if you are flushing as I said above, and manage your grey so you have nigh on a full tank of grey before you are ready to flush the black then I would not concern myself. In addition you might try adding a cup of biological washing liquid and a couple of caps of Calgon to your empty black tank. This is a version of the US mixture, its not chemicals as such and I find it helps keep the tank walls and sensor clean.
    Michael
     
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  11. DavidG58

    DavidG58 Funster

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    @sallylillian

    Thanks for that, I wish we had an option to pump ours out, our macerator is immediately below the toilet and we depend purely on gravity to get rid from the tank, although we can also tip our MH sideways using the E + P jacks, that can help, but as you say 40mm pipe seems to get rid nice and easily (unless uphill :LOL:) I have on a couple of occasions ended up with a pipe full of 'liquid' due to gradients, bit messy when manually swapping over.

    I might look at joining our 2 together, but will not be easy, the black drops vertically from the tank with about 75mm exposed pipe under MH, it would need a 90degree bend to allow a joint and that might then block. Our blade valve wire connection has already failed on our grey tank outlet and I fitted a ball valve at the outlet some time ago now, making it even more complicated to merge the two

    we do use Bio liquid at all times in black and grey tanks, not really sure it makes much difference to the odour of the contents, I was discussing this very issue with Bev last night, given the costs involved in ownership and moving the MH around, if we added a whole bottle of Bio liquid shared between the black and grey at each emptying it doesn't really add enough cost to worry about and might then improve the odour :)
     
  12. sallylillian

    sallylillian Funster Life Member

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  13. scotjimland

    scotjimland Funster Life Member

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    Agreed..

    On some sites it all goes to the same mains sewage drain so makes no odds, but on others the grey is dispersed into the land.. If it made no difference where grey and black waste was disposed, your van wouldn't have separate tanks.

    Unless you know .. play safe..
     
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  14. sallylillian

    sallylillian Funster Life Member

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    But then if you live in London your tap water has been through 7 people already.
     
  15. GJH

    GJH Funster Life Member

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    Is that why so many Londoners are full of *****? :LOL::LOL:
     
  16. Dave and Ginny

    Dave and Ginny Funster

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    Business users including camp sites will be charged for their water by means of a water meter. If they are on mains drainage they will be charged for waste that enters the public sewer at the rate of approximately 90% of the volume of water. For years now reducing that percentage further by either recycling or using the gray water for some other process has been encourage by water companies, including the one I used to work for in the area of the UK that has....believe it or not, less annual rainfull than Jerusalem :LOL:.
     
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  17. DavidG58

    DavidG58 Funster

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    I will ask what they do with their grey water and let you all know what I did with my black (y)
     
  18. DavidG58

    DavidG58 Funster

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    give us a couple of letters as a clue Graham, too many options as you have left it :)
     
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  19. Dave and Ginny

    Dave and Ginny Funster

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    David, the answer will most likely be that it all goes down the sewer. My point is that you cannot tell this just by looking at the waste inlet except where it has been specifically set up for RV dumping. If I had your set up I would ask the site, chances are they would direct you to a surface sewer cover that you could drop your hose into. This would also give you some gravitational oooomph!
     
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  20. GJH

    GJH Funster Life Member

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    Perhaps all the options apply David :LOL:
     
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