Philadelphia Public-Private Partnership Structure—Biogas Cogeneration Plant

clock July 6, 2011 04:02 | commentComments (0)
Several years ago, the Philadelphia Water Department realized that it needed additional heat to operate its wastewater processing facility. To address that need, the city designed a facility that generates electricity and heat using methane gas derived from wastewater sludge. The city originally planned to finance the facility by issuing tax-exempt bonds. It also expected to own and operate the facility, because generating biogas, electricity, and heat would be tightly integrated with the op... [More]
Categories: Financing | Renewable Energy | Water & Wastewater | Permalink
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Improving and Analyzing Operating Practices for Municipal Water and Wastewater Facilities

clock February 24, 2011 05:20 | commentComments (1)
Centrifugal pumping systems are commonly found at water and wastewater treatment facilities.  The performance capabilities of these pumps are often interpreted by analyzing graphs that have two curves—one curve representing the pump’s head capacity and the second the system’s requirements. On these supply-and-demand graphs, the system curve slopes up, and the pump curve slopes down.  Due to conservative design or regulatory requirements, pumping syste... [More]
Categories: Best Practices | Water & Wastewater | Permalink
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