2026-05-09
In recent years, national environmental protection policies have been continuously strengthened. As a key area for industrial pollution prevention and control, industrial parks have increasingly strict wastewater discharge control standards year by year. The control of indicators such as COD, ammonia nitrogen, total phosphorus and heavy metals has become more and more stringent. Once enterprises discharge beyond the standard, they will face serious consequences such as production suspension for rectification and heavy fines. Industrial park wastewater comes from complex sources, covering chemical industry, printing and dyeing, electroplating, food processing and many other industries. The wastewater has variable composition, large fluctuations in water volume, and contains refractory organic substances and toxic and harmful substances.