. Do you know if NaOH is detrimental to the "life" of a septic tank?
Like nearly everything else, it depends on how much. Filling the tank with
NaOH crystals would probably be a really bad decision. Putting a cupful of
them into a 1000 gallon tank would probably have no measurable impact on
septic performance.
A few tablespoons flushed down a sink drain is just about certain to have
no impact.
In all instances (except for the fill-the-tank absurdity) the lye will
react with organic material in the tank, forming reasonably innocuous
substances.
I would be more worried about putting copper compounds down the septic.
--
Kirk and Diane Kerekes/Red Gate Ranch
X-Face by "Saving Face" <http://www.santafe.edu/~smfr/utils.html>
gk> Do you know if NaOH is detrimental to the "life" of a septic tank?
Certainly is. So is vinegar. You will have to have some quantative
measure of how much acid or base you are talking about in how much
septic volume. Then you can begin to calculate the effect in terms of
pH. A little of most anything base or acid (note: no hydrocarbons)
will not harm a septic tank because of massive dilution. To be
accurate, you would also need to know the chemical contents of the
septic system when you introduce acid or base, so that you can have
some measure of the sytem's buffering capabilities. A well buffered
solution can take much more acid or base without affecting the pH than
one with a small buffering capacity. For example, distilled water has
very poor buffering capacity and will be affected by a very small
amount of acid or base. Most detergents you use in your clothes
washer are basic and in normal quantities will not harm the life in
the septic system.
I know these things in general from college chemistry, but that was so
long ago, I cannot help you with equations to figure out. Also, maybe
someone else has a more "practical" explanation of how to figure out
how much acid or base is OK in a septic tank.
Also, if you have a concrete septic tank, undiluted strong acid that
comes in contact with the concrete will eat it badly, so even if a
small amount of undiluted acid will not be detrimental to the septic
system in terms of pH, if it gets on the concrete, you could have
trouble down the road.
dion
--
Dion Hollenbeck (619)597-7080x164 Email: hol...@vigra.com
http://www.vigra.com/~hollen
Sr. Software Engineer - Vigra Div. of Visicom Labs San Diego, California
Rich
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