Darkroom water, grey water, black water

Discussion in 'B&W: Film, Paper, Chemistry' started by JOSarff, Feb 19, 2013.

  1. JOSarff

    JOSarff Member

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    At the risk of beating a dead horse I would like some advice.

    I am building a new home that will incorporate a grey/black water waste system.

    I have been using a septic tank for over 12 years with no problems, so my question is this: Would you classify the water from a final print washer (after selenium toning, rinse, PermaWash or KHCA and a rinse) as grey or black?

    I lean toward grey, GF leans toward black.

    Thoughts?


    Thanks in advance,

    Joe
     
  2. joh

    joh Subscriber

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    In my opinion it is gray water, the biggest part of the chemicals should be gone after a rinse. Ok I would not drink it, but for a toilet or so,
    it should be fine and I think it is a good idea to use it again before you waste it....

    regards hans
     
  3. tkamiya

    tkamiya Member

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    If you are talking about wash water, not the actual solution, the concentration of active ingredients are VERY low.

    If you are implementing a system, why not ask the manufacturer of the system and find out if the system is capable of handling/treating low concentration of chemicals involved?