Re: Inexpensive Aerators for the Septic Tank

SewerRat,
The problem with aerating a tank is that sludge is stirred up from the bottom creating a Septic Soup. This sludge is not what we think it is. It is composed of zillions of microscopic particles that get suspended in the soup, called TSS (Total Suspended Solids). They flow right through your filter under water pressure, and then clog up the filter. These solids take a long time to settle back to the bottom of the tank, like several weeks. These solids are like smoke in the wind. No matter what kind of filter you have, TSS will slip right through.

The only thing we can do is to make sure that there are NO water currents in the tank. I turned my input baffle "T" around to supply the blast of toilet water horizontally across the top of the tank, where it used to point down vertically, and send the blast of water down to stir up the sludge.

If you are going to add another tank to the output of your original tank, I would choose a dual chamber tank and aerate the input chamber and let the output chamber be used for settling the remaining TSS. See this diagram for how TSS settles out into sludge.
http://www.fao.org/docrep/003/T0388E/t0388e10.gif

My latest thinking is that worms in the septic field are godly to keep the field healthy. Worms thrive on TSS. They are used extensively in Austraila & New Zealand. See my latest research on worms:
http://tinyurl.com/Septic-Solutions

Grizz

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