Surface water and silage effluent in biogas systems can be comprehensively treated by TerraOrganic in such a way that both receiving water, which can be treated with pre-flood water, and an energy concentrate can be produced for the digester. Our “TerraOrganic OFW & Bio” product is able to evaporate up to 3,000 m³ of surface water per year. It is also possible to add additional “TerraOrganic OFW” components at any time to increase capacity to up to 12,000 m³ per year. This can also be done retroactively. It is the most cost-effective way to relieve the burden on the final waste disposal site while earning money at the same time!