Electrochemically-Based Advanced Ozonation Modules for Water Sterilization and Purification.

An electrochemical based Advanced Oxidation Process (AOP) developed by Lynntech, Inc., was used to produce USP pharmaceutical grade Water For Injection (WFI) by decomposing pyrogen, oxidizing dissolved organics and sterilizing the final product water. Electrochemical generation of ozone is emerging as an advanced technology because: (1) ozone is formed directly from water and (2) this method provides a concentrated ozone source surpassing that of conventional ozone generation processes. By combining ozone generation with UV radiation in an AOP system design, enhanced oxidation results from the chemical radicals produced through the interaction of UV light with ozone. These transient radicals aggressively attack and oxidize a diverse range of chemicals (i.e., benzene, acetic acid, pyrogallol, etc). This project entailed: (1) fabrication and testing of an ozone generation module, (2) assembly and testing of an 03 + UV treatment system, (3) purification of water by oxidation of organic contaminants, (4) ozone sterilization, and (5) demonstrating that an electrochemical ozone generation module can be easily converted to an electrochemical oxygen generation module. These applications illustrate a widespread use potential. Lynntech has advanced this electrochemical technology to a suitable stage for scaleu to a commercial prototype. Details of cost benefits are included. Electrochemical ozone generation, Advanced ozonation process, Water purification, Ozone oxidation, Sterilization.