Two ABC members, City of Des Moines Wastewater and CDM Smith have been working together to maximize the city’s biogas benefits by recovering additional value from excess biogas produced by the wastewater reclamation facility. CDM Smith designed a biogas conditioning and purification system to prepare the biogas to the quality capable of being injected into a nearby utility pipeline. The renewable natural gas volume that the Authority now injects through the pipeline is equivalent to supplying 5,500 homes, daily, with natural gas. More >>