Wastewater Treatment

Digester Roof Rehab / Roof Replacements

The wastewater treatment plant uses five large, sealed tanks know as anaerobic digesters. These digesters use anaerobic bacteria to transform organic solids into methane gas. The City plans to replace one digester cover per year for the next 5 years.

Digester Gas Flare Relocation Centrifuge Replacement

Anaerobic digesters produce methane gas (biogas) as a byproduct of the treatment process. The City has built a facility to maximize biogas reuse for electricity generation and biosolids drying. Regulations state that any unused biogas must be combusted in gas flares to mitigate methane emissions. The City intends to replace its aging gas flares within the next 2 years.

Aeration Treatment Upgrades

The wastewater treatment plant cleans up dissolved organic pollutants (BOD) through a method called conventional activated sludge treatment. Here, special bacteria consume the pollutants with the help of aeration diffusers supplying oxygen. Over the next 2 years, the City plans to upgrade and replace the pipes and diffusers in these treatment tanks. These upgrades will make the process more efficient and cut down on electricity consumption at the plant.

Electrical Upgrades

A large amount of electricity is necessary for effectively treating the pollution in the wastewater that comes to the Wastewater Treatment Plant. The electrical substations at the plant are between 40 and 70 years old. The City plans to modernize the electrical systems at the Wastewater Treatment Plant over the next 3 to 5 years.