A Better Sediment trap; for potters etc.

I was asked to design a sediment trap that could cope with several litres per minute of heavily sedimented water.
Came up with this cheap and easy to build design that uses less space than the conventional approach and is light and easy to clean out.


The basic principal is - the water moving upwards is going a lot slower than the water moving fast down the sides of the buckets.
It is important for maximum efficiency that the buckets are very level and buckets without an over-hanging lip are more forgiving in this area.-
What we are aiming for is laminar flow down the sides of the buckets, a thin, smooth sheet of water. If it becomes turbulent then the flow rate needs to be reduced or use wider rather than taller buckets(and tub).
If sediment at the bottom of the buckets or tub is being stirred up by the down-flow then increasing the height of the stand and raising the lower bucket may help.
Bigger is better and more buckets is always an option too.