Thanks 
For simplicity’s sake I do think pentane would get you 60% of the way there.
The other 40% would need a more interesting solvent I believe 
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I debated bringing this up as I knew it would sidetrack the discussion, but it was the perfect thread to ask. If anyone comes up with a solid SOP I’d be awesome if ya share.
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It would probably take a while but another viable route would be vacuum distilling the waste water and then including a giant column of mol sieve in the vapor path.
Then you wouldn’t have to deal with trying to extract from an unreasonable amount of dessicant powders.
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Anyone considered that there’s going to be nutrients and dirt and shit in the waste water?
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Yes, micro thca shows up. Only ever seen one outfit do this… talk about an insane amount of water to boil
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Applying ultrasound to the water to speed evaporation is also an option.
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Also, inert gas sparging would work especially well in this situation because the viscosity of the solution is so low. No heat needs to be applied to allow the solution to be thin enough for sparging to be effective.
It might even be beneficial to chill the waste water during the sparging process so you can keep the majority of water from making it into the vapor phase at all. The more volatile components should be carried off with the sweeping gas and can be condensed in a cold trap. Shit maybe even a gaseous solvent like butane would work better as the sweeping gas than nitrogen.
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That approach would work well in combination with using RO to first eliminate most of the water volume
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If one chooses to vaporize any significant amount of water from hash water waste, one may be doing it wrong
Never send evaporation to do a membrane’s job
::turns on rotovap::
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Well this thread has become fun eh? Nice to have started this discussion, now another doubt that I think has been mentioned somewhere. I notice on the collection from the drain of the freeze dryer there’s a lot of terpenes in the water, put it in the freezer but don’t see any separation between the phases, idk if terpenes are azeotropic but I wonder how to separate them more efficiently. The water looks like milk
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You could try a liquid to liquid extraction with
Pentane ,Or di ethyl ether
If you have a cls butane might be an option as well
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Throw some salt in there and then freeze, might help the separation.
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After I get done hashing (10-15 gallons) I water my veg plants with it.
If I had 200 gallons a day of waste, I’d just RO filter it and try to use it to wash a car or water plants instead of dumping it out every day.
I don’t believe trichomes and terps do well in the water solvent after 20-30 mins. Not sure if you’d want to retain them.
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A local company back in the medical days would just boil the water off and they’d have a lot of “stuff” left and then would sell it off at $6-7 per gram wholesale…
There’s a ton of fine material getting though the bubble bags…
Is it worth a damn?
I can’t say
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