Removal of Arsenic Compounds from Natural Waters Using a Hybrid System (Photocatalysis-Reverse Osmosis)

摘要

The extraction process of As(Ⅲ) and As(Ⅴ) compounds from water using the reverse osmosis treatment with membrane ESPA-1 has been studied. The retention coefficient of As(Ⅲ) was shown to amount to 47-56% in pH interval of 5.2-9.4; as a result, the arsenic concentration in permeate exceeds the drinking water MAC by about 5 times. A hybrid system (photocatalysis-reverse osmosis treatment) was proposed for the effective removal of arsenic compounds from natural waters.