JAUE2018-077 CH4 and CO2 Emissions from Sludge Treatment Wetlands

Abstract

Due to the low investment and energy consumption and no chemical dosage requirement, sludge treatment wetlands have been applied as dewatering and stabilization technology for surplus sludge treatment. In the process of sludge stabilization, greenhouse gases will be released. In order to find out the greenhouse gas emission variation in the process of sludge stabilization, the experiment used the closed static chamber technique to study and analyze the characteristics of methane and carbon dioxide emission fluxes from sludge treatment wetland during sludge stabilization periods, and compared with the traditional sludge drying bed. The results showed that the greenhouse gas emission fluxes during the sludge feeding period were much higher than that during the natural stable period; the total amount of greenhouse gas emission from the sludge treatment wetland was significantly lower than that of the traditional sludge drying bed, and ventilation pipes had a significant impact on decreasing greenhouse gas emissions.