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 Post subject: Used Septic Tanks
PostPosted: Jul 28th, '14, 18:34 
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May have put this in twice so mod please remove one if so. Had trouble working out how to post. Anyways........
Have a friend who's interested in turning her old concrete septic tanks (1.7m deep x 1.5m wide) into the tanks for a new system.
Would they be ok to use once painted with membrane or with a pond liner. Can't seem to find accurate info on the web.
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R


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 Post subject: Re: Used Septic Tanks
PostPosted: Jul 28th, '14, 19:11 
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I suppose if it was lined there shouldn't be any issues. Will it be used as a fish tank or sump tank, what's the overall system plan

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 Post subject: Re: Used Septic Tanks
PostPosted: Jul 28th, '14, 19:44 
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Ricaino, I have converted a septic tank into a very useful sump for my system. I lined it with a double layer of builders black polyethylene.

Here is a picture of it taken on the day it was commissioned:


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Sump.jpg [ 218.95 KiB | Viewed 2885 times ]

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 Post subject: Re: Used Septic Tanks
PostPosted: Jul 29th, '14, 10:51 
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Personally i dont see alot of point in lining it, especially if it is old and has sat empty/ unused for many years.
However, there is a slight concern over the dimensions, people tend to try to keep tanks wider than deep for aeration purposes.
It probably wouldnt cause so much of a problem as a sump as it would as a FT.


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 Post subject: Re: Used Septic Tanks
PostPosted: Jul 29th, '14, 12:14 
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Yavimaya, there is no bottom in my 'septic tank', so I suppose it is more like a concrete well liner. With no base, lining it with plastic was more than a little bit necessary. :wink:

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 Post subject: Re: Used Septic Tanks
PostPosted: Jul 29th, '14, 13:24 
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Thats a good point and i suppose realistically if its an old one they would all be like that???


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 Post subject: Re: Used Septic Tanks
PostPosted: Jul 30th, '14, 04:42 
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Not old. They've got bottoms. Council has implemented sewage and decommissioned everyone's septic. The tank will be emptied and given a clean which the council is saying will make it suitable for grey water. Couldn't find anything on the web regarding reuse but one site said grey water will be turned septic by the tank within 24hrs which I found a bit over the top. I'm thinking there'd be some bacteria absorbed in the concrete but low levels. Really quite surprised there isnt more information available.
How durable would the builders plastic be AD? And any info on membrane v pond liner?
Thanks everyone.


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 Post subject: Re: Used Septic Tanks
PostPosted: Jul 30th, '14, 05:48 
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Check the pool & paint companies and you might find there's a suitable paint or sealer that could be used.

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 Post subject: Re: Used Septic Tanks
PostPosted: Jul 30th, '14, 07:32 
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Ricaino wrote:
Council has implemented sewage and decommissioned everyone's septic

Wish they did this in my area. Not really because septic is difficult but more so that the septic tank is right in the way of my decking project.
:upset:

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 Post subject: Re: Used Septic Tanks
PostPosted: Jul 30th, '14, 10:22 
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maybe you could spend some of your huge tax return and get a composting toilet, then turn the septic into another fish tank too? :)


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 Post subject: Re: Used Septic Tanks
PostPosted: Jul 30th, '14, 12:46 
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Can we stop picking on Charlie?

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 Post subject: Re: Used Septic Tanks
PostPosted: Jul 30th, '14, 12:47 
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Seriously, this cant be healthy.
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:laughing3:

Ehh...Ok. :oops:

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 Post subject: Re: Used Septic Tanks
PostPosted: Jul 30th, '14, 13:39 
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smatthew wrote:
Can we stop picking on Charlie?


We're all just jealous.

I usually figure the more you get paid, the more work/stress/responsibilities involved with it. Probably why all we've seen of the new system is the just ordered bio rod thingis.

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 Post subject: Re: Used Septic Tanks
PostPosted: Jul 30th, '14, 13:53 
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Naa he's probably swanning around on his new $10k lawn mower, with built in bar fridge and tv. :lol:


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 Post subject: Re: Used Septic Tanks
PostPosted: Aug 3rd, '14, 17:23 
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So where do I get a lawn mower with a built in bar fridge? Can I get one with bikini models to push it?


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