Therma-Flite Biosolids Drying System Offers Affordable Option to Landfill Disposal

Therma-Flite Biosolids Drying System Offers Affordable Option to Landfill Disposal
Therma-Flite Biosolids Drying System Offers Affordable Option to Landfill Disposal

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The SludgeBox modular, biosolids drying system from Therma-Flite offers a lower cost option to landfill disposal. Designed to produce Class A biosolids, the pre-piped, pre-wired and factory-tested containerized system can be assembled and operational in three to four weeks.

“It takes our core technology and packages it in a way that makes it more modular, quick deploying and re-locatable,” says Peter Commerford, vice president of Therma-Flite. “We can take the SludgeBox and put it anywhere at the treatment plant. It doesn’t require a building. It doesn’t require a contractor to come in and bid on the installation.”

Commerford says the drying system, which covers about 40 by 60 feet, enables treatment plants to completely process biosolids for less than $40 a ton, reducing transportation and landfill disposal costs. A single SludgeBox can handle about 2 wet tons an hour. Multiple units can be combined to handle larger amounts. Leasing options are available.

“We can take in cake anywhere from 15 to 30 percent solids and discharge at 92 to 94 percent solids,” he says.

The system typically uses natural gas or diesel fuel to dry the sludge. Some facilities use electricity, methane from a landfill or digester gas, as well as various mixtures. Dried biosolids can be sold, used on municipal parks and playgrounds, offered to farmers or hauled to a landfill for less cost.

“Where we’re seeing the highest interest is in areas that have higher hauling costs; areas with higher rainfall,” Commerford says. “When you have more rainfall the soil typically can’t absorb the water as quickly. The concern with applying biosolids in those areas is the pathogens can get into the groundwater. Consequently, you have to haul it farther during certain times of the year. Urban areas are another area of interest where biosolids have to be hauled great distances. And the small footprint is a better fit than solar or composting.” 707/747-5949; www.therma-flite.com.



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