How does oil refinery pollute the environment?

Oil refineries pollute the environment through several mechanisms, including air emissions, wastewater discharge, and hazardous waste generation. They release volatile organic compounds (VOCs), sulfur dioxide, and particulate matter into the air, contributing to smog and respiratory issues. Additionally, refineries can contaminate water sources with toxic chemicals and heavy metals from wastewater, harming aquatic ecosystems. Furthermore, the handling and storage of crude oil and refined products can lead to spills and leaks, further exacerbating environmental damage.