If water is in short supply but you have lots of space you can water wash your bio using only one new lot of water for each batch.

You would need 4 containers to hold your used water so it can ge recycled for the next batch.

The way it works is the 1st container is used for your first wash and then discarded. The water in the 2nd container is used for the next wash and then returned to the 1st container. Next wash comes from the 3rd container and returned to the 2nd container and so on. The 5th wash is made up of fresh clean water and returned to the 4th container.

This way you don't use very much water per batch. Because you are using recycled water it will probably take an axtra wash to get the bio squeeky clean. The containers required will take up a bit of room, but will save you lots of water.

I like your method Morelli and I'll be doing something like that once the Easter rush is over. Thanks for the fresh idea.

Qwarla, at this time I have no interest in using any water if I don't have to. This was just an attempt to demonstate that I can get good results in a very short time frame using the very minimum amount of water.

My system is set up for Meth recovery and I'll start using that now and experiment with this and Morelli's idea.

For info, I saved $0.01/ltr using the pre wash method over then next most efficient method I've been used. Doesn't sound like much but every little bit helps.

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Maverick
Canberra

Thanks qwarla, that is the method I employed on this last batch. Seemed to take one extra wash but only 35 litres in "used" water. The next one,after glycerol removal, I will spray the new warm bio against the solar heated side of my plastic drum for an hour or so and carry on with the washing, just to see the difference.

Maverick, even though I do methanol recovery, do you think some is still in the bio before washing ? And glycerine...how can I tell ? Maybe the spraying will eliminate them both.

Have a great easter break ...after that I am off for a month surf trip..... stoked.

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cheers, Vince.
landcruiser 1990 vx td-i....B100
landcruiser 1996 gxlmultivalve...B100
mercedes vito 2003.......B40 and climbing

Well I just finished washing 140litres bio from 150litres wvo took 20 hrs.

I use my 2 still processor and recovered 8 litres methanol from the glycerol and bio then transfer the bio into the washtank and bubbled for 20 hours all finished..

Bio Processor

No water and passes 3/27 in a flash everytime...

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HDJ80
Canberra

Morelli I don't think you can get all of the Meth out with Meth recovery unless you run system for an uneconomical time period.

For me I have determined that Meth is still in the bio if the bio is not crystal clear, any haze indicates meth in my book. Glycerol cannot be held in the bio without methanol, remove the meth and the glyc will fall out.

I like the sound of your method and have a large plastic drum (200ltrs) that a mate will be giving me soon so will also give that method a go.

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Maverick
Canberra