Assessment of Wastewater Treatment Plant Sludge via Hydrothermal Carbonization

The purpose of this study is to investigate the potential of hydrothermal carbonization (HTC) of Wastewater Treatment Plant sludge (WWTPS) to be used in hydrocarbon production as solid biofuel and/or soil amendment. In this study, sewage sludge with a total solid content of ۲۰% by weight obtained from a sewage treatment plant in Bursa, Turkey, was used. The sludge was subjected to hydrothermal carbonization at temperatures of ۲۲۰ degrees Celsius with a residence time of ۴ hours. A low percentage of the solid product hydro char can be converted to fuel or fertilizer, while the gaseous products that make up less than ۲۰% are mainly composed of CO۲ and nitrogen. The waste-to-energy approach, with the aim of creating an efficient economy, has attracted considerable attention and highlights the importance of valorizing sewage sludge due to its large-scale production, disposal challenges, and environmental impacts. Hydrothermal carbonization of sewage sludge in the production of microorganism-free products has also been one of the effective factors for soil improvement. As a relatively new and highly regarded method for managing and evaluating sewage sludge, HTC provides a suitable approach to address the unique characteristics of sludge.

کلیدواژه ها:

Hydrocarbon ، Residence Time ، Waste-to-Energy ، Disposal ، Microorganism