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.
Seamless integration into the standard wastewater treatment process
Natural minerals convert carbon dioxide into an environmentally inert bicarbonate
Carbon Facts
34B
Gallons of wastewater treated daily in the US alone.
100K
Wastewater treatment plants operating across the globe.
8
GIGATONS
Estimated annual scale of CO2 removal necessary to meet UN Environmental Program goals by 2050.
1-3
GIGATONS
Amount of CO2 and other greenhouse gases estimated to flow through municipal and industrial wastewater treatment sites every year.
Operational benefits for our partners:
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Cost savings
We provide significant savings relative to conventional methods for neutralization, buffering capacity, and alkalinity.
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Enhanced safety
Our process eliminates risk exposure for operators by replacing conventional, hazardous chemicals for pH control.
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Efficient compliance
CREW technology provides stable, more consistent biological and nutrient treatment to help facilities meet permit regulations.
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Climate action
We reduce facilities’ carbon footprint by replacing carbon-intensive chemicals with locally-sourced minerals.
Benefits for carbon buyers:
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Closed-system measurement
Compared to traditional enhanced weathering or alkalinity enhancement, our closed-system approach deploys inlet and outlet monitoring for extremely precise measurement of carbon removal.
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Immediately deployable and scalable
We utilize existing wastewater infrastructure, existing permits, and abundant minerals to deploy faster and at a fraction of the cost of other CO2 removal methods.
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Continuous and permanent
Investment in carbon removal technology provides durable, year-round CO2 removal that can be quantified in real time today — not years from now.
Current 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 helped reduce operating costs and improve biological treatment while consistently and permanently capturing up to 4000 tons of CO2 per year.
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 include some of the largest companies in the world through the Frontier advanced market commitment. We also have collaborators who are experts in academia, water management, wastewater engineering, and environmental science.
News
CREW Carbon Announces $32M Offtake Agreement with Frontier Buyers
In partnership with Frontier buyers, CREW Carbon has signed a $32 million offtake agreement to remove 71,878 tons of CO2 between 2025 and 2030. Buyers include leading companies Stripe, Alphabet, Shopify, JP MorganChase, McKinsey, Autodesk, H&M Group, Workday, Watershed and Salesforce.
Climate tech firms get $80 million to pull carbon from paper mills, sewage
CREW Carbon provides the opportunity for large industrial players to integrate carbon removal technologies and start to deliver carbon removal cheaply and at scale.
Murphy Highlights New Haven’s CREW Carbon As “Innovator of the Month”
U.S. Senator Chris Murphy (D-Conn.) announced on Monday that CREW Carbon, a carbon dioxide (CO2) removal company based in New Haven, was named “Innovator of the Month.”
CREW Carbon among Carbon Dioxide Removal Purchase Pilot Prize Phase 1 Semifinalists
CREW is honored to be included alongside remarkable technologies.
