Used plastic drum for additional filter

Discussion in 'Test Kits, Controllers, Reactors and Dosers' started by Raven, 29 Jul 2008.

  1. Raven

    Raven

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    Hi guys,
    I've got hold of an old plastic drum (+- 800l).
    I want to use this drum as an additional filter, and to make my water volume bigger.
    The problem is - i've got no idea what was kept in the drum previously.
    If one can clean this extremely good - will it help, or must i rather stay away from it?
    My guts tell me not to use it, but on the other hand - +- 800l more water volume, and additional filter......:biggrin:

    it looks like it might have contained something oily.
     
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  3. Warr7207

    Warr7207

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    Clean it and then put RO water in it (know the TDS rating). If the TDS rating spikes from the original reading then not good
     
  4. Mtroboer

    Mtroboer

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    I would rather steer clear:unsure:
     
  5. Mike

    Mike Retired Moderator

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    Unless you can be sure that it has held no contaminants and that it is made from food safe materials, don't use it.
     
  6. OP
    Raven

    Raven

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    Sounds like a good idea...
     
  7. OP
    Raven

    Raven

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    How do i know it's made from food safe materials?
    I've got it from someone, that knows someone, that know some one else, who is working in yscor.....
    So then i would rather not use it....:(
    There goes my extra water volume and filter....:( :(
     
  8. Mike

    Mike Retired Moderator

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    In the UK food safe containers are marked with a fork and glass stamp, if you look on the internet i'm sure you will find a very cheap supplier somewhere, or ask at a large restaurant if they have any containers they no longer need. (which is where i got my 220lt R/O container.)
     
  9. OP
    Raven

    Raven

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    Cool - i'll try this...
    Do anyone know of a restaurant that i can try?
    Or any other local supplier which is cheap cheap?
     
  10. Mtroboer

    Mtroboer

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    Try some of those Packaging places, I know of two here in Kimberley that supply to restaurants where you can get some food-safe containers cheap!
     
  11. Warr7207

    Warr7207

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    i have purchased 200L drums from plastic world and the RO testing showed the plastic had something in it. Once resining several times, I got the TDS reading to zero.

    Been using it since.

    PS: these containers cost me R250.00. so maybe just get a new drum.
     
  12. OP
    Raven

    Raven

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    For how long did you kept the water in the drum before you've done the TDS reading?


    I think i'll go for a new drum then.
    So now i sit with a 800 lt drum with no use... damn
     
  13. Mekaeel

    Mekaeel Moderator

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    Yeah dude.If i were you,i would just chuck it.Rather be safe than sorry.Dont want to loose all the goodies in your tank ;)
     
  14. Warr7207

    Warr7207

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    Resined it once with RO then took a reading straight away. After the second resin the the RO was acceptable.

    I would suggest doing reading straight away, so that everything that is in the water is in suspension and you will get a more accurate reading
     
  15. jacquesb

    jacquesb Retired Moderator

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    Hey guys - just to play "devil's advocate" here....
    What is you wash with soap, rinse, rinse a second time, then wash out with an acid, ie, vinegar or perhaps swimming pool acid - won't this then be able to clean out the container well enough to use?
     
  16. Warr7207

    Warr7207

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    I would say yes, just remember the final couple of rinses needs to be RO
     
  17. Shaun

    Shaun Retired Moderator

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    The problem with non food grade plastic is the stuff gets absorbed by the plastic. Similar to LR leaching PO4.
     
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  18. Warr7207

    Warr7207

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    But leaches what ? If it was leaching any chemical you would pick it up on the TDS.
     
  19. Mike

    Mike Retired Moderator

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    If the plastic isn't food grade, it WILL leach loads of chemical nasties into your R/O, there are no "ifs" here, why take a risk, your tank has cost you thousands of Rand, you put in loads you you time into it then kill it all with a cheap bit of plastic.
     
  20. Mekaeel

    Mekaeel Moderator

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    Agree with Wee Man.Throw it away please.
     
  21. scubaninja

    scubaninja

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    hey guys, i been looking for a big drum too for storing NSW to fill up my tank, so i find all this really interesting. What you guys are saying is that i need to get food safe container? Where could i get one(like not restaurants-shops please:) - would feel bad bugging restaurants) and quite cheap that i could store stuff for long periods of time?
     

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