Industrial production generates and discharges wastewater, and this article will talk about wastewater from the petroleum industry. In order to help everyone better understand the hazards of petroleum industry wastewater, this article will specifically explain the chemical treatment methods for petroleum industry wastewater.
The hazards of petroleum industry wastewater
Petrochemical wastewater refers to the wastewater discharged from petrochemical plants. The amount of sewage is large, and in addition to production wastewater, there is also cooling water and other water used; The components of sewage are complex, and due to the variety of petrochemical products, complex reaction processes and unit operations, the properties of sewage are complex and varied; The content of organic matter, especially hydrocarbons and their derivatives, is high in sewage, and it contains various heavy metals. Petrochemical wastewater comes from various sources with different components, which are closely related to the production process, making it difficult to determine the water quality and quantity of the wastewater.
Oily wastewater is a type of petroleum refining wastewater with a large drainage volume. The water mainly contains crude oil, finished oil, lubricating oil, as well as a small amount of organic solvents and catalysts. Oil in water mostly exists in the form of floating oil, dispersed oil, emulsified oil, and dissolved oil in wastewater. Oily wastewater mainly comes from condensation water in the equipment, oil and gas condensation water, oil extraction steam water washing water, equipment washing water, etc. The concentration of pollutants in oily wastewater is high and difficult to degrade. Most of the pollutants are toxic and harmful substances, which seriously pollute the environment and pose a serious threat to human health.
Chemical treatment of petroleum industry wastewater
There are many effective methods for treating petroleum industry wastewater, including chemical treatment technology. The chemical treatment technologies used for petrochemical wastewater treatment mainly include oxidation method and flocculation method.
The oxidation methods used for petrochemical wastewater treatment mainly include chemical oxidation, photocatalytic oxidation, and ozone oxidation. At present, ozone oxidation method is widely used for the deep treatment of petrochemical wastewater.
The commonly used oxidants in chemical oxidation methods include chlorine, potassium permanganate, and hydrogen peroxide. Oxidation method can effectively remove color and odor from water, as well as oxidize substances that are difficult to biodegrade in wastewater. The chemical oxidation method has good treatment effect, strong adaptability to changes in water quantity and quality, and fast reaction speed.
Flocculation is a commonly used treatment method for petrochemical wastewater. The commonly used coagulants in this method are inorganic agents (such as aluminum sulfate, ferric chloride, etc.) and organic agents (polyacrylamide, etc.). The flocculation method can remove organic matter, turbidity, and chromaticity from water.
This article focuses on the issue of wastewater in the petroleum industry. Through the explanation in this article, everyone should know what the hazards of wastewater in the petroleum industry are! The importance of wastewater treatment in the petroleum industry is self-evident, therefore, enterprises must take good measures for wastewater treatment while extracting and refining oil.
