Peculiarity
High flow volume: The petrochemical industry is trending toward large-scale production with a range of end products and diverse water sources.
Complex Composition: During the crude oil extraction and refining process, various solvents, additives, and auxiliaries are used, resulting in complex organic compositions in the wastewater. Other than conventional pollutants such as oil, sulphur, phenols, and cyanides, the wastewater also contains a range of organic compounds, including polycyclic aromatic hydrocarbons (PAHs), aromatic amines, and heterocyclic compounds.
Frequent fluctuations: The main organic pollutants in petrochemical wastewater are hydrocarbons and their derivatives. Due to frequent changes in market demand, different production processes lead to significant variations in both water quality and quantity, increasing the complexity of wastewater treatment.
Q&A.
Upstream production units generate wastewater from diverse sources with complex water conditions and high treatment difficulty.
Unplanned shutdowns and maintenance lead to significant fluctuations in influent water quality and flow, causing shock loads to the biological treatment system. Recovery usually takes a long time, and the cost is high to maintain effluent quality.
The absence of toxicity early-warning systems delays the response to unexpected conditions, compromising system stability, particularly in meeting ammonia nitrogen and total nitrogen discharge limits.
Solution
