Treatment Plant Upgrade


This page will help keep the public up-to-date on the progress of the construction on the town's Water Pollution Control Facility.

The Future of SW Pollution Control


Updated January 5, 2011

The new laboratory at approximately 80% completed. Cleaning is in progress. When the room is completed, equipment now being used with the addition of some new items will be moved into the lab. This will be used to conduct tests for the plant process as well as for State and Federal permit compliance.

This is a section of piping for the new odor control system, waiting installation. The new odor control system will draw noxious air from several processing points within the plant and expel them through a Biofilter to eliminate the odors.

This is the new sludge storage building. Solids removed from the wastewater will be processed to tanks in the buildings. The solids will then be sent off site for disposal.

This is one of a set of 2 new aeration tanks. Each tank has a capacity of 600,000 gallons. The tanks inject oxygen into the wastewater and provide the environment for microorganisms to grow and break down contaminants. Water passing through these tanks flows into another set.

This is one of two motor control centers that provide power for the aeration system.

These are the 3 blowers that provide air to the aeration tanks. They’re new technology, using air bearings that make them more energy efficient. They are quieter and require less maintenance than other blowers.

This is the local control screen for one of the blowers. The blower speed is 21,338 rpm!

This is a view of one of the two new secondary clarifiers. Water from the aeration tanks enters the clarifiers for final settling. Solids are removed from the bottom of the tank, are processed and sent to the sludge storage building. Clear water flows off the top of the tank and is discharged in the Connecticut River. From May 1st to September 30th the wastewater is disinfected using an ultraviolet light system prior to discharge.