©2019 by 374Water

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

Albert Einstein

SUPERCRITICAL

WATER

OXIDATION

374Water’s disruptive treatment utilizes a physical-chemical method based on the unique properties of supercritical water.

By rapidly reacting sludge or any organic waste with air above the critical point of water (374 °C, 221 bar), all organics are converted to energy, clean water, and non-fossil CO2 in seconds. End-products include distilled water and pathogen-free water containing inorganic minerals which can be used as fertilizers. Surplus energy for the exothermic reaction can be used in the form of heat and electricity

Organic
Waste

Air

SCWO
Process

> 374ºC

 > 221 bar

Clean

Water

CO

Energy

2

Our systems function off-grid fueled by the energy embedded in the waste undergoing treatment. Units are containerized modules with extremely high throughput (3 order of magnitude smaller than conventional treatment plant). They can be shipped and deployed anywhere even where electricity and water infrastructure are failing. Our systems are 50% less expensive than basic/central traditional sewer system and provide significantly superior treatment.     

374WATER SCWO BLOCK FLOW DIAGRAM (BFD)
Process Description: Waste is fed continuously to a heat exchanger for preheating before going into the reactor.

This stream is combined with air that comes from a high-pressure compressor. By providing air at high pressure and temperature an oxidation reaction starts at the reactor, converting all the organic compounds to water, CO2 and N2 gas while generating heat. The heat is used to heat-up the new inlet streams in the economizer and to flash some of the effluent which, together with the high-pressure exhaust gases are utilized in the expander to generate mechanical
power to run the air compressor and generate electricity. The rest of the effluent that contains all the inorganic compounds (minerals) is cooled, depressurized and safely discharged from the system.

BENEFITS

Compact, on-site superior Supercritical Water Oxidation waste processor

Complete elimination of pathogens & micro-pollutants

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.