While fiberglass plastic and pvc are sometimes used almost all baffle designs are similar and perform a set function.
Septic tank baffle wall.
For large tanks lower portion are having holes for flow of sludge.
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.
Your septic tank has two baffles every septic tank contains two baffles one at the inlet and one at the outlet.
If your septic tank is properly maintained with regular plumping a septic tank baffle is not absolutely necessary.
The tank is fully functional even without one.
There should be a baffle on both the inlet and the outlet.
The baffle directs the flow down and slows the flow thru the tank.
Two types of baffles exist septic baffles break down into two main categories.
The inlet baffle gives the debris from the sewer in the house directly into the tank.
Septic tanks may come with a baffle to prevent scum from clogging the inlet or outlet piping and septic fields.
The baffle wall is generally extended 150mm above to scum level and 400 700mm below it.
Most septic tank baffles are made of metal and are attached on the wall hanging down inside of the tank.
Scum being light generally floats at the water level in the tank.
3 things to know about septic tank baffles 1.
Wall baffles and sanitary tees.
The baffle in the inlet changes the flow direction 90 degrees and forces water down into the tank while the baffle at the outlet port prevents the surface layer of water which contains a scum of grease and decomposing sewage from flowing into the outlet pipe.
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.
V roofing slab of septic tank.
Thickness of the wall varies from 50mm to 100mm.
Baffles in a septic tank are provided to keep solids and floating scum and grease inside the tank.
Baffles are provided at both the inlet to the tank from the building and the outlet from the tank to the absorption system.