"We can not solve our problems with the same thinking we used when we created them"

Albert Einstein

SUPERCRITICAL

WATER

OXIDATION

SCWO is an advanced oxidation method that can manage a wide range of organic wastes, in particular wet wastes in concentrated slurries such as wastewater sludges, biosolids, and agriculture, pharmaceutical and chemical wastes.

 

SCWO units are compact, modular and prefabricated so they can be cost effectively shipped, installed and operated within the footprint of an existing operating plant.

 

SCWO is a disruptive technology that will shift the waste management paradigm from treatment to resource recovery.

SCWO utilizes the unique properties of water above its critical point (374°C and 221 bar). In these conditions, in the presence of oxygen, organics are rapidly converted to clean water, mineral solids, inert gases, and reusable heat with >99% reduction in solids volume.  It has been demonstrated to effectively eliminate PFAS from biosolids and Reverse Osmosis (RO) reject.  

Influent waste is continuously fed to a heat exchanger where it is preheated before entering the reactor. It is then combined with air from a high-pressure compressor. The water and air at high pressure and temperature oxidize the organic wastes in the reactor creating CO2 and N2 gas, clean water, mineral salts and heat. The heat is recycled to heat the inlet stream in the economizer and to flash some of the effluent; together with the high-pressure exhaust gases, the expander produces mechanical power to run the air compressor and generates electricity. The remaining effluent with suspended mineral salts is cooled, depressurized and safely discharged from the system for recover and reuse.

BENEFITS

Compact, on-site superior Supercritical Water Oxidation waste processor

Complete elimination of recalcitrant organics like PFAS, drugs, & microplastics as well as pathogens.

Energy-efficient and possibility for off-grid operation at scale

 

No pollution, no odor, offsetting methane emissions (x86 more potent than CO2)

 

Competitive cost for developed countries, affordable cost for developing countries

ENVIRONMENTAL IMPACT

Our innovation will enable sustainable, safely managed sanitation and waste management solutions that will help maintain health, restore dignity and enable the poorest populations to adapt to climate change. Sanitation is especially crucial for children, the elderly who suffer disproportionately from diarrheal diseases and women and girls who suffer from the lack of sanitation. 374Water units also promote a circular economy where clean water (900 liters produced for each ton of waste treated), residual heat (that could be used to provide hot showers) and minerals (that can be used as fertilizers) are returned to the community, thereby enhancing their economic development and decrease their sensitivity to climate shocks. Unlike other technologies, our process does not require any chemicals, catalysts, or external energy sources, and therefore increase the treatment process resiliency to utility and supply chain vulnerability in extreme weather. The scalable and adaptable compact units can be embedded inside communities since they do not generate polluting emissions (no NOx, SOx, VOC, or odor) and could be located above flood lines, thus enabling a decentralized revolution that also reduces transportation emissions. The units eliminate methane emissions from untreated waste decay and thereby offset 6 tons of CO2e per ton of waste treated. They further reduce nutrients loading to land and surface-waters, thus protecting water resources and reducing toxic algal blooms. Units are broadly applicable in all geographies (including hard to reach and underserved populations) and thus will enable equitable distribution in all eligible countries and regions.

©2020 by 374Water

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