| Yes, I think beads are a curse. They are an excellent method of solids removal, but they catch the particles in a compressive fashion, holding them in a flow of water that gets more powerful as it collects more crap, thus boosting the opportunity for organics to disolve and increase the pollution.
EA's new device is a version of the static kaldness that some of us have been looking at for a while now. Interestingly, this means that K can be run to catch no particles at all when fluidised, but static it becomes a very efficient particle trap. Better still, it does not trap the particles in a compressive fashion.
My personal favourite would be to run a screen over a bed of static sinking media shaped like kaldness. This ssm would be fluidised to clean, and water removed from it using an undergravel like extraction. The water from that would then be pumped to a TT.
This system gives serious solids removal, -far better than the answer, does not need a dedicated pump to run it, wnat little escapes the screens is held in the SSM, and any organics that do escape get fried in the TT, which can give most of the benefits of a Bakki.
The footprint would be tiny, and in theory could filter a pond of 10,000, maybe even more using a 1 metre sq footprint. (this would depend on baffling the flow to prevent disturbance of the SSM by the water falling onto it.
I'd rate that as pretty good. |