One of our client would like to buy from us a soll drum filter. The capacity requested is for 22 Kg hour. The suggested a 1m2 filtration surface but it can be larger. They need to remoove woods particles sludge from water. Thanks to send me a quote for an initial unit and they may need more in the futur. Regards. Aquamerik Inc. (Quebec) Canada G4A 3W4