Ngokusebenzisana okuqhubekayo kwezobuchwepheshe kwemikhiqizo kanye nezixazululo ezenziwe ngomsila, i-medlong jofo fieltration yakha okunye ukusetshenziswa kwezokwelapha, izimboni, zasendlini, ekwakheni amakhambi, futhi futhi kuhlinzeka ngezixazululo zohlelo lokusebenza oluhle.
Ngemuva kweminyaka engaphezu kwengu-20 yentuthuko, i-medlong jofo fieltration inobuchwepheshe obuvuthiwe, imikhiqizo esezingeni eliphakeme nohlelo oluphelele lwesevisi.
