Reading guidance：So-called oily contains a lot of polymer and crude oil sludge. Oily sludge oil is about 45% ~ 50% reported offshore oilfield, and contains the obvious residual polymer, great viscosity, easy to agglome

   So-called oily contains a lot of polymer and crude oil sludge. Oily sludge oil is about 45% ~ 50% reported offshore oilfield, and contains the obvious residual polymer, great viscosity, easy to agglomerate, more complex composition, the emulsification degree is higher, it is difficult to completely solid settlement, more difficult to deal with oily sludge. The existence of the quality of crude oil transportation not only influence, will lead to the oilfield water injection system is polluted; sludge not only contains the aging of crude oil, wax, bitumen, polymer, and benzene, phenol and other toxic substances on the human body, the harm of soil and water resources can not be ignored. The national requirements for environmental protection is becoming more and more strict, oily sludge has been divided into the scope of hazardous waste management, standards must be processed before landfill or piled up. Therefore, the oily sludge of economy, harmless treatment, has been cited From everyone's attention.
1. Tempering - mechanical separation method
     Conditioning mechanical separation method is by the addition of modifiers, of oil sludge containing polymer mixing quenched and tempered, breaking colloid stability of the original, change the polymer containing the structure of clay particles, improve sludge dewaterability, then the mechanical separation equipment of oil sludge after quenching and tempering, water, mud three-phase separation. Currently, the use of regulators, including solid agent and flocculant, solid regulator with fly ash, coal and other solid powder, flocculant is the main charge and sludge instead of flocculant.
2. Pyrolysis
Pyrolysis is refers to under anaerobic conditions containing poly reaction temperature is above the sludge is heated to hydrocarbons, make the complex hydrated and cracking reaction of hydrocarbons, implementation and separated from the solid material, recycling of condensed sludge pyrolysis of hydrocarbons, pyrolysis, and the earth will be directly to landfill.
3. Carbonization
     Coking processing oil sludge containing polymer, mainly using existing coking process of heavy oil processing, the principle to increase the yield of light oil, processing of polymer containing heavy oil sludge. At present, the disposal of coking polymer containing sludge development mainly the following two aspects: the coking of heavy oil in sludge treatment, direct recovery of light oil products. The second is a certain amount of strength additives and carbonization additives are added to the sludge, and control of coking reaction conditions in the coking process, to produce carbon adsorbent.
  4. Extraction method
   Extraction method is according to the principle of similar compatibility, using an extracting agent and polymer containing oil sludge in oil and other organic matter mutually soluble, solid substances can be separated from the liquid, extraction solvent to recycling, the recovery of petroleum hydrocarbons can be used. At present, the extraction technique for treatment of as from sludge recycling crude oil resources, an important technology to realize harmless treatment was widely studied. By petroleum ether extraction technology for disposal of oily sludge, under the right conditions, causes the oil content was 50.1% of the oily sludge of oil removal rate reached 93.7%.
5. Hot water washing method
  Hot water washing method was originally the United States Environmental Protection Bureau according to the characteristics of oily sludge, a method of the treatment of oily sludge. At present, mainly used for treatment of oil contaminated soil. The method is through the cleaning liquid repeated washing oily sludge by flotation and centrifugation method, the implementation of solid-liquid separation. Cleaning fluid mainly for lye or surface active agent and other additives, such as aqueous solution and mixed alkali can use cheap inorganic alkali, inorganic salt or detergent.
6.chemical demulsification method
  Chemical demulsification method treating polymer containing sludge, is mainly to polymer containing sludge added chemical demulsifier, demulsification by demulsifier of polymer containing sludge in oil in water, water in oil emulsion state, then the mechanical separation and a natural sedimentation method, three-phase separation, crude oil recovery rate is high. The separated oil recovery storage, water can be reused, solid standards can be for landfill treatment. Water reuse, reduce demulsifier dosage, reduce emissions, reduce the cost of sludge treatment. Among them, the demulsifier is mainly some of the table surface active agents and acid substances.
7. Bio-reactor method
  Biological reactor is a kind of device system which uses the biological function of enzyme or organism (such as microorganism) to carry on the biochemical reaction in vitro, it is a kind of biological function simulation machine.
8. Ultrasonic method
  As a new kind of sludge disposal method, ultrasonic will produce a sponge effect and partial heating effect in order to improve dehydration ability. It is shown at relevant research that low-strength and quick ultrasonic disposal can reduce the moisture content of oily sludge to below 85%. At the same time, it can about 25% to 50% utilization amout of flocculant.
9. Microwave method
   Microwave is a kind of high-frequency electromagnetic wave whose frequency is about 300 MHZ to 300GHZ. Use microwave to process  polymer containing sludge, mainly sludge removal of excess water, completely broken containing poly interior sludge in oil in water emulsion, demulsification, to oil, water, solid three-phase resource use.
10. Electro-chemical process
    At present, electro-chemical method containing polymer sludge is still in the exploratory stage, but the method has been successfully used in containing poly oily waste water treatment, and saturated or unsaturated in situ remediation of soil heavy metals and organic pollution, from contaminated soil effectively remove most of organic synthetic material and PAH (polycyclic aromatic hydrocarbons)
  
 

：Analysis of sludge disposal trend ：Summary of disposing sludge by ultrasonic