Seligman city park to get new play equipment

Wednesday, June 16, 2021

Lagoon sludge, inflow and infiltration effects addressed

The city of Seligman has put a focus on inflow and infiltration in the city lagoon over the last few years, now looking into sludge buildup and biological augmentation, and the city park will get new equipment for the summer and splash pad gets work.

Brian Nichols, Seligman city clerk, said the Seligman splash pad opened to the public last week, but before opening there was some damage to a Ultra Violet (UV) filter.

“Any equipment subjected to chlorine eventually deteriorates,” Nichols said. “Seals and gaskets are the main issue we face each year. This year, when the splash pad was primed, the main guts of the UV filter gave way and the broken parts cannot be replaced. The UV filter is a Ultra Violet disinfection unit that water is pumped through before going through a large particle filter, the UV light kills bacteria.”

The UV filter was replaced, but the city did not advertise the opening of the splash pad because of some work needed on the restrooms, which has since been completed.

New playground equipment for the City Hall Park is planned to be installed by July 4.

“The Sky Venture is a large climbing play toy,” Nichols said. “The Mayor plans to remove the horseshoe pit that does not get used anymore and start construction immediately to hopefully open the new equipment in time for the [Fourth of July].”

The funds for this will come from capitol improvements, with an estimated cost of $14,630.

The rope adventure climbing structure creates multiple climbing paths for children to enjoy. Suggested age for use is 5-12 years old The play structure has a capacity of 28 and has a fall height of 84 inches. With a use zone of 36-by-38 feet and a platform height of 13 feet and 3 inches, the city hopes this brings a new adventure for children at the city park.

In other news, Nichols said there was early exploration into the conversation of a possible new aeration system for the lagoon.

“Up to now I still have heard no plan or ideas,” he said. “This is the idea floating around, something to stir the sludge and prevent sludge from gathering in one corner.”

This is not part of the scheduled $10,000 treatment facility’s plans for 2021, but biological augmentation of the lagoon is.

“[It is] growing bacteria cultures from the water in the lagoon to ramp up the activity of the bacteria so they do their job more efficiently,” he said. “We chose to and budgeted for purchasing bacteria cultures from a company and dumping them into the lagoon throughout the summer to stimulate the bacteria already present.”

A focus on inflow and infiltration in the city lagoon over the last few years is due to rainwater and groundwater getting into the system.

“The yearly cycle of the lagoon has to be monitored to keep the bacteria alive and working,” he said. “During the winter time, the water level of the lagoon is kept low since the the bacteria slow down. During the spring, we get heavy rain, and the lagoon can fill quickly. In the summer, the bacteria are very active. Also, during the summer and spring is when the farmers need water for the crops. It is a balancing act to keep the lagoon working well.

“The major push to control [inflow and infiltration] did drastically reduce the rainwater being pumped into the lagoon, which meant less water during the summer to keep the bacteria happy and the farmers’ crops alive.”

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