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“Hypochlorite Reality” Startup of a Third Generation Hypochlorite System

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Clean Water Services, (CWS), (formerly Unified Sewerage Agency, (USA)) converted four wastewater treatment plants from gaseous chlorine for disinfection to sodium hypochlorite in the early 1990's. Multiple operational and maintenance problems arose that had not been anticipated. These included gasification, scaling, leakage, storage, mixing, safety issues and the increased cost of disinfection. Fixes, upgrades and work arounds were developed by plant personnel to mitigate these problems. We then attempted to address all the problems that CWS and other plants had encountered with hypochlorite in a complete re-design of the existing hypochlorite system at the Durham Advanced Wastewater Treatment Plant in Tigard, Oregon. The new system solved many of the existing problems while creating a few new ones.

Document Type: Research Article


Publication date: January 1, 2002

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  • Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed.

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