THE IMPACT OF UV-ABSORBING WASTEWATER FROM A PRINTED CIRCUIT BOARD MANUFACTURING FACILITY ON THE PERFORMANCE OF A MUNICIPAL UV DISINFECTION SYSTEM
A city in the Northwest recently installed ultraviolet (UV) disinfection equipment as part of the expansion of its municipal wastewater treatment plant (WWTP) from a design capacity of 2 MGD to 4 MGD. In its first few months of operation, the UV disinfection system experienced problems disinfecting WWTP effluent to the required standards. It is believed that constituents in an industrial discharge from a printed circuit board manufacturer (PCBM) were contributing to the difficulties in achieving adequate disinfection. This paper discusses the methodology used and the steps taken to research and address the problems with the performance of this UV disinfection system. The research included measuring transmittance and absorbance and acquiring ultraviolet spectra for industrial wastestreams and WWTP influents and effluents. In order to obtain some perspective on the issues facing the WWTP and PCBM, three other PCBMs and two of the WWTPs to which they discharge were visited. Factors thought to affect UV disinfection were compared among the four PCBMs and the three WWTPs. During the investigation, premature scaling of quartz UV lamp sleeves was also found to be a cause of disinfection problems. This premature scaling was examined through effluent analysis, in-situ scale analysis, and comparison of factors affecting sleeve scaling rates to similar parameters at other WWTPs.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Article Media
Document Type: Research Article
Publication date: 2001-01-01
More about this publication?
- 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 These proceedings are not peer reviewed. A subscription to the Proceedings of the Water Environment Federation includes access to most papers presented at the annual WEF Technical Exhibition and Conference (WEFTEC) and other conferences held since 2000. Subscription access begins 12 months after the event and is valid for 12 months from month of purchase. A subscription to the Proceedings of the Water Environment Federation is included in Water Environment Federation (WEF) membership.
WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access. Access begins 12 months after the conference or event
- Subscribe to this Title
- Membership Information
- About WEF Proceedings
- WEFTEC Conference Information
- Learn about the many other WEF member benefits and join today
- Ingenta Connect is not responsible for the content or availability of external websites