I know what you're thinking, another article about Mansfields and BURG.....get a room, right!? Well they actually did, as you can see from the pictures and rather than get dirty in it, it actually gets clean. Inside each blue tank is a small snorkeled human feverishly picking out each individual dirt particle at a rate of 30,000 litres an hour, and they seem to be doing a rather good job of it too. Unfortunately health and safety doesn't allow this practice anymore so what actually happens is the water filters through layers of sand, glass and activated carbon which take out the particulates and the clean water is whisked away to the next stage of purification under UV lights, in order to eliminate the bacteria. Throw some hydrogen peroxide into the mix and this creates crystal clear water with no nasty unseen surprises.
The rationale for requiring a filtration unit is wanting to reduce the regularity with which the water is changed in the channels, due to the sheer volume in them and the associated cost of doing so. The idea is that you keep the water in the channels for as long as possible whilst maintaining good water quality.
As always, thanks to BURG (Joan van Burg) and F.W Mansfields (Lee Port and Kuldar Sorra) and of course our glorious leader Peter Kelly for all their hard work. Whilst we're at it, they rarely get the appreciation they deserve; thanks to BURG engineers Andries, Mark and Piet and KFS reprobates Matthew, Marcin and Mark for the actual installation.