Engineering Wastewater to Remove CO₂

CREW technology makes wastewater treatment safer and more efficient while permanently capturing greenhouse gases.

Our solution

CREW partners with wastewater facilities to seamlessly introduce natural minerals into the treatment process, which dissolve and permanently lock CO₂ into a stable ion that is environmentally inert.

This approach improves wastewater treatment by removing the cost barrier for typical pH and alkalinity optimization and providing safer, more effective process improvements.

Carbon Facts

34B

Gallons of wastewater treated daily in the US alone.

100K

Wastewater treatment plants operating across the globe.

1-3 
GIGATONS

Amount of CO₂ and other greenhouse gasses estimated to flow through municipal and industrial wastewater treatment sites every year.

230
MILLION

Equivalent number of gasoline-burning cars removed from the road by capturing carbon from wastewater plants.

34B

Gallons of wastewater treated daily in the US alone.

100K

Wastewater treatment plants operating across the globe.

1-3 
GIGATONS

Amount of CO₂ and other greenhouse gasses estimated to flow through municipal and industrial wastewater treatment sites every year.

230
MILLION

Equivalent number of gasoline-burning cars removed from the road by capturing carbon from wastewater plants.

Operational benefits for our partners

Cost savings

We provide significant savings relative to conventional methods for neutralization, buffering capacity, and alkalinity.

Enhanced safety

Our process decreases risk exposure for operators by replacing conventional chemicals for pH control.

Efficient compliance

CREW technology stabilizes biological and nutrient treatment to help facilities meet stringent permit regulations.

Climate action

We empower plants with a novel resource recovery pathway for CO₂, while reducing their existing carbon footprint.

Advantages of our Carbon Dioxide Removal (CDR) process

Closed-system measurement

Compared to traditional enhanced weathering or alkalinity enhancement, our closed-system approach deploys input and output sensor arrays to allow for extremely precise monitoring, reporting, and verification (MRV) of carbon removal.

Immediately deployable and scalable

We utilize existing wastewater infrastructure, existing permits, and widely abundant minerals to deploy faster and at a fraction of the cost of other CDR methods.

Continuous and permanent

We provide durable, year-round CDR that is permanently stored as a stable form of dissolved bicarbonate.

Highlighted projects

Our patented technology was developed at Yale University and piloted in 2022 at a 40 million gallon-per-day municipal utility in the Northeast US. CREW is stabilizing and improving biological treatment while consistently and permanently capturing a nameplate capacity of 4000 tons of CO₂ annually.

In the Southeast US, CREW is working with an 18 million gallon-per-day utility to improve and expand existing alkalinity dosing. Our plug-and-play approach will increase and stabilize key environmental conditions like alkalinity and pH, which can improve biological treatment and pollution removal. CREW’s model enables significantly reduced operational costs, while capturing a nameplate capacity of 2000 tons of CO₂ annually.

Our partners

Our customers and collaborators are experts in academic research, water management, wastewater engineering and environmental science, as well as high-quality carbon credit buyers like the Frontier Climate Fund.