For small tanks rcc hanging type scum baffle walls are provided in septic tanks.
Position of baffle wall in septic tank.
Septic baffles break down into two main categories.
The septic tank baffle or tee is a device on the inlet or outlet of a septic tank which prevents sewage back flow into the inlet or outlet pipe.
In some designs the septic tank inlet baffle or tee also reduces the movement of sewer gases out of the tank and up into the building through an un trapped sewer pipe.
Older septic tanks especially those made from concrete tend to contain wall baffles.
The chambers are divided by a baffle wall.
Septic tanks are split into two chambers.
Baffle walls are provided near the inlet.
Whenever the system is emptied or pumped out inspection of the baffle is critical since the loss of one can deteriorate.
If the septic tank were just a rectangular box with no baffles it would allow liquid to go from the inlet right to the outlet and not have enough time to settle out the solids and allow the lighter things grease etc to float.
At septic tank tees.
The inlet baffle wall is placed at a distance of l 5 from the wall where l is the length of the wall.
Solids are retained in the first chamber and liquids then pass through the baffle into the second chamber and on to the percolation area.
The baffle wall is generally extended 150mm above to scum level and 400 700mm below it.
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Wall baffles and sanitary tees.
Our photo compliments of architect jerry waters shows a badly deteriorated concrete septic tank baffle.
While fiberglass plastic and pvc are sometimes used almost all baffle designs are similar and perform a set function.
Most septic tank baffles are made of metal and are attached on the wall hanging down inside of the tank.
Details of the septic tank baffle repair involving installing a pvc tee in this septic tank are shown.
The condition of the septic tank baffles tells you what has been happening in the septic system.
Sewage smells whether in the house or in the drain field sewage smells indicate that unprocessed sewage may be clogging the drain.
It is optional near the outlet.
Plumbing backups when the inlet baffle wears out sewage might flow backwards from the tank into the house or surface scum might prevent sewage from entering the tank backups can also result from clogs in the drain field caused by failure of the outlet baffle.
