PHG Energy (PHGE) and the city of Lebanon, Tennessee, have signed a contract that will provide an environmentally sustainable method of waste disposal and produce green power in the process.
The waste-to-energy technology, which will go on line early next year, is a downdraft gasification plant that will cleanly convert up to 64 tons per day of blended waste wood, scrap tires and sewer sludge into a fuel gas that will generate up to 300Kw of electricity. The generation of this power will provide for the plant's internal power needs as well as contribute electricity to the wastewater treatment plant where it will be located.
"This is not incineration or burning," Lebanon Mayor Philip Craighead pointed out. "There is no smoke or odor. The feedstock material is broken down at very high temperatures in a sealed vessel, and about 95 percent of what goes into the gasifier comes out as the fuel gas." Craighead also said the remaining 5 percent to 10 percent of material exiting the gasifier is a high-carbon biochar that can be recycled or sold for agricultural or industrial uses.
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