Why Ozone? A Unique Case Study Comparison of Ozone and Permanganate for Oxidationof Iron and Manganese

摘要

A pilot study was conducted to compare the effectiveness of ozone and potassium permanganaternfor iron and manganese precipitation for a natural groundwater in Queens, New York.rnThe oxidants were tested under various contact times, dosages, and pH levels. In addition, ozonerntesting included an evaluation of by-product formation of aldehydes and bromate, andrnbiostability sampling.rnOzone was found to be the more effective oxidant. It required a lower dosage, less contact time,rnand no pH adjustment of the groundwater (natural pH is 6) prior to oxidation. By-productrnformation and biofouling of the downstream membranes and water piping were also not an issuernduring the testing.