Process Intensification Through Decarbonization
CREW provides wastewater treatment facilities with a process intensification solution that improves performance, lowers costs, and permanently removes greenhouse gasses.
Our solution
CREW’s process intensification technology optimizes alkalinity through calcium carbonate dosing that delivers consistent treatment, better settleability, reduced chemical usage, and cost savings.
Our data-driven solution integrates seamlessly into operators’ existing processes, with measurable results in weeks, to better serve communities.
CREW can flexibly tie into the plant’s biological treatment process.
Seamless integration into the existing wastewater treatment process
Natural minerals remove greenhouse gasses and improves treatment efficiency
Operational benefits of alkalinity enhancement:
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Optimized performance
CREW’s process intensification technology drives more consistent biological treatment, better nutrient removal, and improved settleability, and our high-resolution monitoring and modeling provides robust, applicable process insights.
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Cost savings
We provide compounding opex savings, using a more cost-effective alternative to replace caustic and reduce alum and polymers. Wastewater partners have seen opex savings translate to significant capex savings.
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Enhanced safety
Our solution eliminates risk exposure for operators by replacing conventional, hazardous chemicals.
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Efficient compliance
CREW’s technology results in stable, more consistent biological and nutrient treatment, which leads to better effluent quality to help facilities meet permit regulations.
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Environmental impact
We reduce facilities’ carbon footprint by replacing carbon-intensive chemicals with locally-sourced minerals as well as reducing process emissions.
Why carbon buyers work with CREW:
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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 than 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.
Projects spotlight
Trickling Filter Facility – South Platte Renew
25MGD
- Coming soon
EBPR Facility – Northwest U.S.
45MGD
- Replaced costly and carbon-intensive alkalinity source
- Improved SVIs by operating above baseline alkalinity setpoints
- Reduced downstream ferric usage in tertiary facility and anaerobic digestion
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
Dr. Chris Reinhard Joins CREW as Senior Scientist
CREW is thrilled to announce that Dr. Chris Reinhard, a leading expert in carbon dioxide removal and earth system modeling renowned for his pioneering work in enhanced weathering, has joined the company as Senior Scientist. A co-founder of Lithos Carbon and Professor at Georgia Tech, Chris brings decades of experience in biogeochemical cycles, carbon dioxide […]

CREW Delivers First Verified WAE Carbon Credits to Frontier Buyers
CREW Carbon is pleased to announce that we’ve delivered our first verified Wastewater Alkalinity Enhancement (WAE) carbon dioxide removal (CDR) credits to Frontier buyers. These 104 credits, verified by Isometric, mark the first delivery under our 6 year, $32.1 million offtake agreement with Frontier buyers.

Protecting and Modernizing America’s Water Infrastructure
Supporting partnerships between the wastewater and carbon removal industries can help bolster U.S. water infrastructure. Read Carbon Removal Alliance’s new policy paper on how these partnerships will unlock untapped growth to scale carbon removal, lower public-sector costs, and improve efficiency.
