ABSTRACT
Beihu wastewater treatment plant is a large WWTP newly built in Wuhan. It is expected to be completed by the end of 2021, equipped with centralized sludge disposal facilities. The comprehensive treatment of sludge adopts the process of “Thermal Hydrolysis Pretreatment + Anaerobic Digestion + Dehydration and Drying + Reutilization as soil”, which can meet the actual energy consumption of 32.1%. Roof photovoltaics are installed in the North Lake sewage treatment plant, with a total construction scale of about 23.7276 MW and an average annual power generation of 20.5578 million kWh, which can meet 16.17% of the actual operation energy consumption. During the operation, management measures can save energy and reduce consumption by 5% - 6%. The above three measures can make up 53.26% of the energy of the wastewater treatment plant. To achieve the goal of carbon neutralization, there is still a 46.74% energy gap in the wastewater treatment plate. By studying and investigating the process selection of Beihu WWTP, calculating the consumption level of the WWTP and analyzing the path to achieve carbon neutralization, the study provides a reference for the new sewage treatment plant to achieve the goal of carbon neutralization.
