A sustainable way to reduce excess sludge volume while making advantage of its intrinsic characteristics is to recover its energy potential and use solar power to dehydrate the residual digested sludge.
Energy from sludge.
Our BIOTIM® Solids anaerobic reactor is designed for high biogas yield while significantly reducing sludge volume.
In the BIOTIM® Solids reactor, the sludge undergoes a mesophilic anaerobic digestion converting the organic compounds into methane. The methane is desulphurized before fueling the combined heat and power generation units.
Biogas desulphurization is necessary to increase life duration of combustion engines while reducing running cost. The BIOTIM® Scrubber uses activated sludge from biological wastewater treatment as a washing medium, reducing costs for both water and chemicals.
Using solar heat for sludge drying
In regions where the sun is abundant, solar energy is used for sludge dewatering.
In the Fez and Marrakech municipal wastewater treatment plants for instance, automated robots stir digested sludge in large greenhouses while the sun provides the thermal heat for sludge dehydration, increasing dry solids concentration.
HYDROGONE® Greenhouse Drying significantly reduces sludge volume and transportation cost.
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