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Old 06-24-2013, 02:39 AM   #1
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Default Do sanitizers kill bacteria? If so, then not good for my septic system

I am running on a 100% rainwater and local septic system. I need the good bacteria in the septic system; does sanitizer kill them? Let's say I mix up a couple gallons, and then run it down my drain, does it kill the bacteria?



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Old 06-24-2013, 02:57 AM   #2
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Quote:
Originally Posted by billpaustin
I am running on a 100% rainwater and local septic system. I need the good bacteria in the septic system; does sanitizer kill them? Let's say I mix up a couple gallons, and then run it down my drain, does it kill the bacteria?
Of course they do that's the whole point, but it all depends on concentration. Starsan for instance is an acid, it kills bacteria because of its very low ph. Once it's been diluted, like when it's dumped into a septic tank, the ph is no longer low and it no longer will kill bacteria.


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Old 06-24-2013, 03:00 AM   #3
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The dilution factor should make whatever you're flushing ineffective as a sanitizer(ie. you won't kill any of the good bugs). And if you're using Starsan, the breakdown products might even be beneficial.

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Old 06-24-2013, 04:10 AM   #4
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Your tank is probably over 500 gallons. They are usually 1000 gallons minimum plus the drain field.

Dumping a yeast slurry is probably a bigger problem than a 5/1000 dilution of sanitizer. A yeast cake is a lot of nutrients for the septic tank bacteria to chew through. But even then, if you aren't already overloading the tank, it shouldn't be an issue.

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Old 06-24-2013, 02:22 PM   #5
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I always thought the yeast would help eat through all that stuff as well.

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Old 06-24-2013, 02:46 PM   #6
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Conventional septic systems use anaerobic digestion to clean waste.

There are species of yeast that are aerobic and facultative (partial aerobic - partial anaerobic) but none that are fully anaerobic. Once they use up all the available molecular oxygen, they stop working.

Hence the need to aerate the wort after the boil and stuck fermentations that result from insufficient aeration.

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Old 06-24-2013, 02:52 PM   #7
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Yeast are good for a septic system.

Sanitizer won't hurt a septic system.

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Old 06-24-2013, 03:00 PM   #8
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...and if you really are concerned let id sit for a while... it's ability to sanitize degrades over time and exposer to (I guess) oxygen....

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Old 06-24-2013, 03:09 PM   #9
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I remember the city coming around after my nosey neighbor called someone saying "yeah,it looks like a meth lab or something". I explained to them what the stuff was they found in the caker near the corner of my front yard where the storm drain is. So yeast def helps,& as long as the Starsan & PBW were properly mixed,it's ok so far as sewers are concerned from what they told me.

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Old 06-24-2013, 03:57 PM   #10
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Quote:
Originally Posted by unionrdr View Post
I remember the city coming around after my nosey neighbor called someone saying "yeah,it looks like a meth lab or something". I explained to them what the stuff was they found in the caker near the corner of my front yard where the storm drain is. So yeast def helps,& as long as the Starsan & PBW were properly mixed,it's ok so far as sewers are concerned from what they told me.
Do you ever share your homebrew with that pleasant person? I wouldn't


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