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Oily sludge is in mining, transportation, oil refining and oil wastewater treatment process of oily solid waste. General oil content in sewage sludge in 10 a 50%, moisture content in a 40 90%, oil chemical industry in China, producing 800000 t per year on average tank sediment, pond sediment, shengli oilfield produced oily sludge in more than 100000 tons a year, every year to produce about 150000 tons of oil sludge in dagang oilfield, henan oilfield produced each year 5 x 104 m3 oily sludge. Oily sludge contains a large number of benzene, phenol, anthracene, pyrene, etc have the stench of toxic substances, if not handled direct emissions, not only takes up a large number of cultivated land, and on the surrounding soil, water and air will cause pollution, also contains a lot of pathogens in sewage sludge, parasites (eggs), heavy metals such as copper, zinc, chromium, mercury, salts and polychlorinated biphenyl, dioxin and radionuclide refractory poisonous and harmful material. At present, oil sludge sand has been countries listed as hazardous waste.
Since the mid - 80 - s, the United States, Japan, Germany, the former Soviet union and other developed countries began to study effective method and technology of the low treatment sludge. Nowadays the treatment of oily sludge at home and abroad generally have: incineration method, biological treatment method, thermal washing method, solvent extraction, chemical demulsification method, solid-liquid separation process, etc. Although treatment method are many, but because of pertinence is not strong, processing costs higher shortcomings no promotion. For oily sludge harmless, clean production and recycling of resources integrated processing, become one of the focus of the environmental protection and the oil industry at home and abroad.
Our company uses Japan commonly used oil sludge dedicated drum dryer, oil sludge dryer is a kind of high mechanization degree of oil sludge drying equipment, fluid through the barrel of the small resistance, low energy consumption, according to the characteristics of oil sludge, the sludge dryer cylinder is set a crushing blade, can effectively prevent the material of the cluster, promote the smooth progress of the oil sludge drying process. After equipment drying sludge and coal, it is realized the oil sludge reduction, stabilization, harmless treatment.
Our company through the manufacturers at home and abroad and all kinds of oil sludge drying equipment inspection, under the premise of combination of a dedicated by oils, oil sludge automatic quantitative sludge drying machine, supporting facilities, such as dust catcher processing production line. Oil sludge dryers is fully considering the characteristics of the oil sludge drying characteristics, the existing heat source to carry on the reasonable and effective distribution of oil sludge dryers play in order to achieve the best effect. Under the condition of existing venues such as the objective, maximize the excess sludge processing, but also reduces the oil sludge drying project investment, reduce the capital risk.
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