Net Zero Energy? Here's a Plant That Took Things Even Further

Food waste in a Massachusetts sanitary district facility enables a wastewater treatment plant to produce more power than it uses.

Net Zero Energy? Here's a Plant That Took Things Even Further

Food waste slurry is delivered to the wastewater treatment plant in tanker trucks.

When the state of Massachusetts prohibited the landfilling of organic material, the Greater Lawrence Sanitary District made plans to use food waste to boost biogas production from its anaerobic digesters.

The plan has worked so well that the wastewater treatment plant is a net...

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