Incazelo emfushane:

Isithambisi-drum esijikelezayo esijikelezayo esingama-centrifugal singahlunga amanzi akhululekile ngamandla angaphandle. Sinezidingo eziphezulu ze-polymer kanye namandla okubopha e-sludge. Uma kuqhathaniswa nomshini wokuqinisa ibhande, isithambisi-drum sethu esijikelezayo se-sludge singanikeza i-sludge eqinisiwe enokuqukethwe kwamanzi okuphansi. I-sludge enokuqukethwe kwamanzi okungaphezu kuka-1.5% iyisinqumo esingcono.