Sulfate precipitation treatment for NOM-rich ion exchange brines

Ion exchange (IEX) resins can remove natural organic matter (NOM) from drinking water sources. However, the IEX system produces a waste brine rich of sodium, chloride, NOM and sulfate. The treatment of the waste brine aims to recover a clean solution rich of sodium chloride, that can be reused to regenerate IEX resin. Previous research showed...

Arsenic oxidation and removal with Manganese oxides in filters

The actual European Union (EU) guidelines for allowed concentration of arsenic (As) in drinking water fix a maximum of 10 ?g/L. However, this limit is expected to become more stringent: the recommended health related limitation from the US Natural Resources Defense Council is below 1 ?g/L. In Dutch groundwater treatment plants, the produced...