WATER TREATMENT METHODS AND SYSTEMS

摘要

Methods and systems for treating water comprising: a coagulation step (125)in which a coagulant is added to a water source to induce coagulation of natural organic matter particles within the water; a membrane filtration step (150) in which the output water from the coagulation step (125) is passed through a semi-permeable membrane (150); and an alkaline filtration step (165) in which the output water from the membrane filtration step (150) is passed through an alkaline filter (165) to raise the pH of the water and induce precipitation of residual metals from the water. The use of membrane filtration technology provides an improved hygienic barrier as well as facilitating reductions in treatment plant size. Ceramic membranes can be operated at low pH levels where NOM and colour removal are optimized and marble filtration readjusts pH as well as buffering the output treated water.