Sources and hazards of oil sludge Oily sewage comes from a wide range of sources in China, including iron and steel refining, industrial production, oil exploitation, pesticide and food production. And these oil pollutants mainly exist in four forms, namely dissolved oil, dispersed oil, oil slick and emulsified oil. The petrochemical industry.,it will produces oily water almost any stage which is from drilling to the transportation and consumption , under the rapid development of science and technology in China, tertiary oil recovery technology has been widely used, its improved oil displacement effect, but also makes the wastewater composition is more complicated. Chemical and pharmaceutical engineering.The main source is oily wastewater from high concentration process. In the manufacturing process, a large amount of water and lubricating oil will be used in the stages of raw material reaction, product separation and raw material pretreatment, so a large amount of oily sewage will be generated Metal smelting industry.In the process of smelting metal, we have to cool, clean and lubricate the material and the equipment which is contact with the oil , it will form oily sewage. Food production.In the process of food production in China, oily sewage produced in the equipment cleaning and machine lubrication and other stages . BZ oil sludge treatment system is designed to obtain clean oil and water, as well as low oil content solids from oil sludge through chemical thermal washing, and multi-stage separation.The recovered oil can be sold to refineries, and the water can be repeatedly hot washed.The oil content of the solid phase material obtained by separation can be as low as 2%, and as a result, it can be treated harmlessly by pyrolysis or biodegradation.
