Process Intensification Through Decarbonization

CREW provides wastewater treatment facilities with a process intensification solution that improves performance, lowers costs, and permanently removes greenhouse gasses.

CREW hardware integration

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.

An infographic showing the first phase of our process

Seamless integration into the existing wastewater treatment process

An infographic showing the second phase of our process

Natural minerals remove greenhouse gasses and improves treatment efficiency

See our approach

Operational benefits of alkalinity enhancement:

  • 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.

  • 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.

  • Enhanced safety

    Our solution eliminates risk exposure for operators by replacing conventional, hazardous chemicals.

  • 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.

  • Environmental impact

    We reduce facilities’ carbon footprint by replacing carbon-intensive chemicals with locally-sourced minerals as well as reducing process emissions.

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Why carbon buyers work with CREW:

  • 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.

  • Immediately deployable and scalable

    We utilize existing wastewater infrastructure, existing permits, and abundant minerals to deploy faster than other CO2 removal methods.

  • 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.

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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.

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News

May 22, 2025

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 […]

May 1, 2025

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.

April 29, 2025

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.

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