Refining industry
Refining wastewater is a non-directable polluted water produced by the refining and chemical industry and is an important component of domestic industrial wastewater. The refining industry is an industry with serious environmental pollution. From raw materials to products, from production to use, there are factors that cause environmental pollution. The refinery industry has complex sewage components with high oil content, high turbidity, high salinity, high corrosion, high iron content, low pH value and high processing difficulty. At this stage, China has become the world's second largest oil refining country. However, with the continuous increase in the processing volume of crude oil in the petroleum refining industry and the decline in the quality of crude oil, the discharge of environmental pollutants remains high, and regional water pollution and atmospheric problems are increasing. Serious. At present, most of the sewage discharges of refining enterprises in China are implemented in accordance with the Integrated Wastewater Discharge Standard (GB8978-1996), and some provinces and municipalities refer to the Class A standard in the Pollutant Discharge Standards for Urban Sewage Treatment Plants (GB18918-2002).
