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Energy Conservation

Organization(s) Narragansett Bay Commission
Project Description Wastewater Treatment Facilities (WWTFs) use large amounts of electricity – largely to power compressors that provide air to the secondary treatment process. The efficient use of energy by WWTF and the use of renewable energy sources can greatly help to stabilize sewage fees to area residents and businesses. Also, WWTFs that emit large amounts of greenhouse gases from aerobic and anaerobic treatment processes can help to reduce emissions through conservation and renewable energy efforts.

The Narragansett Bay Commission (NBC) received $35,000 in matching grant funding from EPA Region 1-New England in 2005 to study energy conservation and renewable energy opportunities for WWTFs in the northeast. As part of this project, NBC is documenting the results of past and current energy conservation efforts at its two facilities located at Field's Point in Providence and Bucklin Point in East Providence and is assessing potential renewable energy projects that may be of benefit to NBC and WWTF operations in general. NBC has partnered with EPA's Energy Star Water/Wastewater Focus to establish baseline conditions for this project and to launch an internal energy tracking and benchmarking program at both facilities. A final project report scheduled for completion in 2007 will assess the potential of wind, solar, geothermal, tidal/wave, micro-hydroelectric, and biogas as ways of reducing the 2 MW electric demand at NBC's Field's Point facility and the 1.5 MW electric demand at the NBC Bucklin Point facility. A workshop summarizing the results of this project is being planned for the fall 2007 and will be open to all regional WWTFs and other interested parties.

To-date preliminary renewable energy assessments have been completed that have examined the feasibility of implementing technologies that utilize biogas, wind, hydroelectric, and solar as energy sources. In the fall of 2006 using additional grant funds, the Rhode Island Energy Office (RISEO) and NBC initiated two detailed feasibility studies to further investigate generating electricity using biogas in a Combine Heat and Power (CHP) system at the Bucklin Point WWTF and wind energy using a wind turbine at the Field's Point WWTF.

Project Contact
Name Barry Wenskowicz
Phone 401-461 8848 ext. 329
Project Keywords
Processes Wastewater Treatment
Areas of P2 Expertise Energy Efficiency
Industrial Sectors Water Use/Treatment
Activity Keywords Funding and grants, Research and development
Newsletter Northeast Assistance & Pollution Prevention News - Vol. 17 No. 1, Spring 2007 [PDF]


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