ENGINEERING - WITH A PASSION

This project represents an excellent example of a "self help" approach to expand the water filtration plant capacity with a Vacuum DE filter unit, custom designed to fit a very small space within the existing filter building. This 1000 GPM or 1.44 MGD plant produces very high quality water at a very low cost as compared to traditional water filter systems.

The original plant consists of a slow sand filtration system, which was later on expanded by making a building addition, and providing pressure type Diatomaceous Earth (DE) filters. The DE Filtration system was designed to house six filter units. Initially four pressure DE filter units were operating and space for additional two filters was available.

This study of upland water supply evaluated the condition of the conduit system, and suggested necessary improvements to assure a long-term conveyance of treated Hemlock water supply to the City of Rochester. It proposed that 72,500 LF of new conduit be constructed ($17.3 million) and 45,000 LF of existing conduit exterior rehabilitated ($6.7 million) in phases.

Automation of upland water supply for continuous monitoring of system status (e.g. flows, levels, valve position, etc.) and remote valve control on the conduits had been studied. The report identified the required status and control functions and recommends alternatives for management and control of upland water supply.

Existing reservoir chlorination systems at Rush, Highland and Cobbs Hill required improvements to meet the Health Department requirements, provide a safe operation and better water quality control. New separate facilities were recommended for Highland and Cobbs Hill and modifications at the Rush reservoir.