[Vogata]

I see some comment on stopping the whirlpool effect. As far as I know this effect is just a mean to keep retention contact time in settlement high.

At the normal “low” speed we have in normal pond construction should not give anything like industrial vortex separation. Industrial separation is easily to design but to my knowledge comes out for non-commercial standards “VERY” expensive in power consumption pr passing unit.



Have always figured that the settlement in vortex was due to the old speed principle. It will badly translated read something like this:

Speed at vortex wall 0.0-speed at centre off whirl given by pump and diameter off vortex – speeds at in and outlet (centre top off unit) given by pump and pipe diameter.



All particles with higher density than water will fall if given an opportunity. The speed will drop accordingly to diameter and goes for the speed off wall the nearer you get. In the “film” closes to the wall it’s in principle equal too zero. This film will let particles fall to the lowest part off the unit.



Objects placed in this scenario only gives me thoughts off turbulence and no real peace off mind or settlements. I have always placed this kind off fine practical settlement outside (read after) the “vortex” unit.





Please feel very free to comment, harass or enlighten me.





PS Dear BB

Not always as you comment. The countermove is adjustable restrictions (with option to close on purge) on each feed. Measuring and adjusting too the flow pattern needed. Purging each line separately as it was a single line.

The pro is level off awareness and control and the possibility to automate the system. Con as always cost and need off commitment.