Oil Sludge Pretreatment Technology

Oily sludge is mainly produced in crude oil production, oil and gas storage and transportation, and crude oil storage and sewage treatment in refineries. According to the data, Chinas petroleum resources are concentrated in the eight major basins of Bohai Bay, Songliao, Tarim, Ordos, Junggar, Zhujiangkou, Qaidam and East China Sea Shelf. According to its source, oily sludge can be generally divided into three types: floor sludge, tank bottom sludge and refinery three mud.Oily sludge pollutiongenerally has the characteristics of high oil content, high viscosity and difficulty in dehydration. Oily sludge is a multi-phase system. It is generally composed of oil-in-water, water-in-oil and suspended solids. The oily sludge has a high oil content, the water is fully emulsified, and the direct tr