Our innovative technology for the sustainable use of resources


Wastewater, sewage sludge and organic waste as valuable raw materials for clean water, biochar and carbon credits

Our technology goes far beyond simply removing and storing CO₂. We use wastewater as a valuable resource and can even process sewage sludge into biochar. In addition, we are able to process organic waste and green waste and not only deliver carbon credits as output, but also clean water and valuable biochar that can be reused.


We use wastewater as input, which is cleaned in a "constructed wetland" (plant-based sewage treatment plant). A downstream biomass farm is planted with bamboo and irrigated with the purified wastewater, subsequently drawing CO₂ out of the air.

The bamboo is then harvested and processed into biochar together with sewage sludge and organic waste in a pyrolysis plant. Not only is biochar produced, but also energy in the form of heat, which can be converted into climate-neutral electricity, for example. The biochar, in turn, contains permanently bound CO₂ and can be used as a carbon sink in agriculture or in the construction industry.

Our goal is not only to make an active contribution to climate protection, but also to be profitable. Our technology enables us to deliver not only carbon credits, but also clean water, CO2-neutral construction materials and biochar-based products.

On our website we clearly present our process in an explanatory video and give insights into our factory/farm. We invite you to tackle projects with us or buy emission rights and thus make an active contribution to climate protection.

Our innovative and natural process at a glance

The water 2 carbon Factory from Planetzero.earth

The production of one ton of bamboo biomass removes about 1.8 tons of CO₂ from the atmosphere

The production of one ton of bamboo biomass results in the removal of around 1.8 tons of CO₂ from the atmosphere. About 1 cubic meter of treated waste water is required for this. Excess purified water is discharged during biomass production. The available space plays a crucial role. On average, a bamboo stem needs 6 months to be ready for harvest, depending on the location. The harvest is about 21.6 tons of dry matter or 10.8 tons of carbon per hectare per year, which corresponds to about 3.6 kilograms of carbon per square meter per year from the atmosphere.

A bamboo plantation with an area of 10 hectares would thus remove about 360 tons of CO₂ annually.

Ideally, the wastewater treatment technology planned for our projects does not require any energy.

In return, an annual specific energy requirement of approx. 750 kWh/m³ wastewater treatment capacity must be assumed for conventional cleaning (e.g. activated sludge process).

With a system size of 100 m³/day, this results in a theoretical energy saving of 75,000 kWh per year, corresponding to approx. 40 tons of CO₂.


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