FAST Septic System
FAST Septic System
(OP)
I've recently installed a FAST (Fixed Activated Sludge Treatment) system and was wondering if the blower has to run 24 hrs/day. In my neck of the woods, that works out to about $65.00/month for electric. If I could run it say 3 hrs on, 3 hrs off, that would certainly help. Thanks for any help
Dave
Dave





RE: FAST Septic System
I can only speak to larger, extended aeration AS plants. They go septic very rapidly if air is turned off.
In general, though, it seems to me as if any flow-through AS system needs a constant aeration rate (as opposed to batch systems, which operate differently). This controls the life and eating cycles of the microbes, which must be held fairly constant. Knowing how easily these cycles are disrupted by even small variations of temp, pH, toxins or organic loading, I would have to say "Don't turn the air off".
Remember, amateurs built the ark...professionals built the Titanic. -Steve
RE: FAST Septic System
I will add that you may be able to lower the output of the blower if you have a variable speed or belt drive to optimize the installation.
The equipment as built was probably conservatively sized or possibly oversized for future expansion.
But once you have established the minimum requirements, you will not be able to operate below the minimum requirements.
RE: FAST Septic System
RE: FAST Septic System