combined grey waste and toilet

Discussion in 'Tech/Mech General' started by philk, Jun 23, 2013.

  1. philk

    philk

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    A research Hymer vehicle is running a combined grey water system whereby the toilet waste is liquified and put in the grey tank. Whilst I understand that some of you with American units may be used to this, what should the others know? and do you empty in the same way?
    Add to that a fridge you can access from outside, why? Its unnecessary and a security risk.
    What do we think?
     
    Last edited: Jun 23, 2013
  2. Snowbird

    Snowbird Funster Life Member

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    No problem with it as long as you dont let it go on the campsite pitch and empty it in a designated dump point.
     
  3. SuperMike

    SuperMike Read Only Funster

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    No American units are not used to this. They have separate black and grey tanks. :Cool:
     
  4. simsy56

    simsy56 Funster

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    The RVs I have owned have a black tank for the toilet waste, and grey tank(s) for the shower/sink waste.
    Empty the black tank first (into a sewer waste), then flush the pipework with the grey. Never let the black into the grey.
    If you cannot let the black tank go, you can empty the grey into a drain, and do the black later.

    Craig
     
  5. John & Joan

    John & Joan Funster

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    I can see problems with smells using this proposed method.

    Urine stinks if left for more than 24 hours. Poo can be held in a cassette with little smell using a SOG and Bio liquid if urine is limited and disposed of separately. I can go 10 days between emptying the cassette using this method with 2 using the loo Full timing wilding. If moving about regularly I try to empty more often. A cassette is easier to empty in the UK as we don't have the luxury of Bourne empting. There is one MSA in the UK with a dump facility that is at Cobham on the M25 cost £5 to dump and no drinking water available.

    I think the American two tanks method is preferable to putting the toilet waste into the grey water tank. Fit a moderator to the outlet for easier pumping to a remote drain.
     
    Last edited: Jun 24, 2013
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