Wastewater treatment plant needs $1M in repairs
NORWICH – At the City of Norwich Public Works and Public Safety meeting on Thursday, Superintendent of Public Works Carl Ivarson told the committee about repairs needed at the wastewater treatment plant.
During the flooding of late June, there was an excess amount of water coming into the treatment plant. Although the water did cause damage to some of the equiptment, Ivarson’s crew was able to keep the city from losing water and sewer services during the flood.
Heavy flood waters caused damage to the rotating biological contactors, or RBC’s. An RBC is part of the secondary treatment system. Six RBC’s make up each train, and the wastewater plant is comprised of three trains. The RBC is made up of a series of closely spaced, high-density plastic discs supported on a long shaft, and rotated by a mechanical drive. Sewage travels through the primary treatment area, where coarse materials are removed, before passing through the RBC units which work to break down and stabilize organic pollutants.
The total cost of the repair will be between $1 million and $1.3 million. The repairs will need to be done in parts, to keep the wastewater treatement plant operating. “There are three trains; we can only take one off at a time,” Ivarson said. Once each repair is done, it will take 30 days before that train is operational again. The RBC’s depend upon the bug life that grow on the discs. It will take 30 days for the necessary biological life forms to come back.
“We’re looking at the whole year,” Ivarson said when asked how long the project would take.
During the flooding of late June, there was an excess amount of water coming into the treatment plant. Although the water did cause damage to some of the equiptment, Ivarson’s crew was able to keep the city from losing water and sewer services during the flood.
Heavy flood waters caused damage to the rotating biological contactors, or RBC’s. An RBC is part of the secondary treatment system. Six RBC’s make up each train, and the wastewater plant is comprised of three trains. The RBC is made up of a series of closely spaced, high-density plastic discs supported on a long shaft, and rotated by a mechanical drive. Sewage travels through the primary treatment area, where coarse materials are removed, before passing through the RBC units which work to break down and stabilize organic pollutants.
The total cost of the repair will be between $1 million and $1.3 million. The repairs will need to be done in parts, to keep the wastewater treatement plant operating. “There are three trains; we can only take one off at a time,” Ivarson said. Once each repair is done, it will take 30 days before that train is operational again. The RBC’s depend upon the bug life that grow on the discs. It will take 30 days for the necessary biological life forms to come back.
“We’re looking at the whole year,” Ivarson said when asked how long the project would take.
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