A bit of a nightmare to say the least.
In the not too distant past I searched and searched for 8" round white and black emulsifying pads like.......
I found them at
www.janitorialdirect.co.uk. Just do a search for 'floor pads' and you will find them. They come in loads of sizes. I used them on a cheap multi speed hand held polisher to clean a floor. It only took a couple of hours to clean 30sqm.
I was at a trade show at Topps Tiles recently. There was a demo from Fila and their new product 'First Wash'. It is used to wash off excess grout from the surface of the tile. Maybe give that a go.
Good luck.