ASSESSMENT OF THE METHANE EMISSIONS REDUCTION POTENTIAL OF SEVERAL WASTEWATER TREATMENT TECHNOLOGIES

Abstract

The Global Methane Pledge is an initiative initiated at COP26 with the aim of reducing global methane emissions by 30 percent below 2020 levels by 2030. The purpose of this study is to assess the methane reduction potential of several domestic and industrial wastewater treatment technologies in 2030 compared to 2020. Using the 2006 National Greenhouse Gas Inventory Guidelines (IPCC 2006), the study assessed the methane reduction potential of the proposed wastewater treatment measures to be about 4.9 million tons of CO_2eq in 2030 compared to 2020, corresponding to a reduction of 41.155%, of which domestic wastewater treatment has the potential to reduce 42.1% and industrial wastewater treatment has the potential to reduce 37, 4% methane emission. Regarding each technological measure, methane reduction potential of measure GP1- Optimizing domestic wastewater treatment conditions to reduce methane emissions is 2,815.08 thousand tons of CO_2eq, measure GP2- Using biotechnology to remove methane from domestic wastewater treatment process is 960.51 thousand tons of CO_2eq, measure GP3- Optimizing industrial wastewater treatment conditions to reduce methane emission is 253.84 thousand tons CO_2eq and measure GP4- Methane recovery from the treatment of industrial wastewater with high organic matter content is 868.13 thousand tons of CO_2eq.