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Clearwell Project gives city efficient water distribution PDF Print E-mail
Friday, April 19, 2013 12:04 PM

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DELPHOS — The Water Treatment Plant By-pass Improvement Project has been completed and the City of Delphos will see improvements in water distribution during peak times.

On Monday afternoon, Peterson Construction completed the instalation of three new Crane Deming pumps, which are horizontal split case pumps. The 75-horsepower pumps have the capacity to drive 1,500 gallons of water per minute out into the distribution system but are dialed down to 1,300 gallons per minute.

Delphos Water Superintendent Tim Williams described the difference in the operation of the old pumps verses the new ones.

“When the old ones started up, it was like a punch — a jolt — which was hard on equipment and the rest of the system,” he explained. “With the new controllers, the system has a soft start and ramps up and slows down gradually.”

Service Director Greg Berquist said that it was a good project which cost $201,000 and came in under budget.

“The Commissioners worked hard to get this project taken care of,” Berquist stated. “It was a need for the community as a whole and a need for K&M Tire’s fire suppression.”

In November 2012, Berquist spoke with council describing the bottleneck between the clearwells and the water plant. He said the improvements would increase the city’s capacity to provide water. At that time, a restricting 12-inch pipe fed the cascading water system. Now, the new 18-inch insulated steel outlet allow for a less restrictive flow.

The water did cascade through all three clearwells, which are used for chlorine contact — a process used for disinfection — before the water is moved to the upground tanks for distribution.

“With the new outlet, all three tanks have equal amounts of water dispersed to and contained within them, which allows water to move more freely,” Williams detailed.
The VFD controllers are connected to the Supervisory Control and Data Acquisition (SCADA), a system that collects data from various sensors at the treatment plant and sends data to a central computer that manages and controls the data. One of the key processes of the system is its ability to monitor an entire system in real time and send data to a Human Machine Interface (HMI) where data is viewed and monitored by an operator.

“We can monitor different level transmitters, monitor the speed of the water and how much water is on top of a filter,” Williams detailed.
As a precautionary measure, the city will keep one of the larger pumps as a backup.


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