Case Study: El Dorado Irrigation District, Cameron Park, CA

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•Case Study: El Dorado Irrigation District, Cameron Park, CA

By Degremont Technologies - Infilco

In 2003, the El Dorado Irrigation District in Cameron Park, CA received a State mandate to upgrade its existing Deer Creek Wastewater Treatment Plant to meet the increased demands in the area. The District was directed not only to meet the increased capacity but also to investigate the use of a UV disinfection as an alternative to the existing chlorine gas system to meet the effluent discharge limits of less than 2.2 mpn/100mL of total coliforms.

The installation is comprised of three (3) UV disinfection channels, each containing thirteen (13) Aquaray 40 HO VLS modules mounted 1 across by 13 in series including standby units.

As required by the California DPH, the UV equipment had to demonstrate full compliance of the NWRI guidelines for hydraulics as configured. Successful hydraulic testing was completed by the consulting firm Whitley Burchett & Associates and the resulting report gained CADPH approval. The system is now fully operational and consistently meeting its disinfection criteria.

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•Case Study: El Dorado Irrigation District, Cameron Park, CA