METHOD AND SYSTEM FOR REMOVING METALLIC CONTAMINANTS FROM A PRESSURIZED LIQUID FLOW STREAM

摘要

A prefabricated process system to transform dissolved metallic contaminants into an insoluble solid facilitating the contaminant's removal from the liquid phase is presented. The metallic ions dissolved in the flow stream are oxidized to a desirable valence state, accelerating the formation of floc particles by chemical precipitation following the addition of one or more reagents. The precipitation of the metallic ions, along with reactive organic and/or inorganic constituents in the flow stream, occurs within a pressurized reactor vessel. Flow from the reactor passes through a <0.2 micron cross-flow membrane microfiltration system thus providing a physical barrier for discharge of residual floc particles from the system. The oxidation-precipitation-membrane microfiltration process is capable of removing >90% of the targeted metallic ions regardless of influent concentration. The cleansed flow stream can be recycled for industrial process applications or discharged directly for its intended use such as for a municipal potable water supply.