In wastewater treatment, “sewage sludge” refers to the fluid waste containing a large proportion of water that results from substances removed from wastewater by flotation or sedimentation in physical and chemical treatment processes, and from the incorporation of dissolved substances into microorganisms at the end of biological treatment. It is essential that sewage sludge undergoes appropriate treatment and is disposed of in compliance with the necessary environmental health criteria. In Türkiye and around the world, the disposal of sewage sludge, an output of urban waste, poses a problem in many cities. In this context, Biotrend plans to assess the situation in the regions where it currently operates and to hold meetings with the water administrations of cities to offer alternative solutions. Biotrend’s revenue model for this activity will be based on the principle of charging a gate fee (disposal fee).