Abstract: Oil and gas field flaring emits large quantities of greenhouse gases (methane, carbon dioxide) and pollutants (black carbon, volatile organic compounds, etc.), exerting significant impacts on the environment and climate. Conventional ground-based monitoring methods are subject to limitations such as high costs, limited spatial coverage and inadequate temporal sampling rates?. In recent years, satellite remote sensing technology has emerged as an effective tool for monitoring flaring due to its advantages of wide coverage, high frequency and low cost. This study integrates multi-source remote sensing data from VIIRS, Gaofen-5, and Gaofen-2 to establish an integrated workflow of “initial screening, localization and validation”, enabling identification and spatial positioning of flaring points. The results showed that the remote sensing monitoring results exhibited high consistency with ground-based measurements.

Key words: refinery wastewater, biological nitrogen removal, nitrification, denitrification, AO process satellite remote sensing, flaring, oil and gas fields, VIIRS, high-resolution satellite