Device of oil-sewage ship for treating sewage and method thereof
A technology of oily sewage and receiving device, which is applied in the directions of grease/oily substance/floating matter removal device, separation method, liquid separation, etc., can solve the problems of large area, huge treatment equipment and poor treatment effect of onshore sewage treatment plant , to achieve the effect of convenient maintenance and management, significant economic benefits, stable and reliable work
Inactive Publication Date: 2009-12-30
DALIAN UNIV OF TECH
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Problems solved by technology
As the final stage or the facility before the final stage, the oil content of the import should not exceed 50mg / L, otherwise backwashing is frequent and the treatment effect is poor
[0005] To sum up, at present, most of the oily sewage from ships is discharged to the shore sewage treatment plant, and physical, chemical and biological methods are used for comprehensive treatment. The shore sewage treatment plant occupies a large area and has huge treatment equipment, which requires special docks for ships. There are many disadvantages
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[0025] In order to have a deep understanding of the oily wastewater treatment equipment and processing technology figure 1 , 2 described as follows:
[0026] The oily sewage in the oily sewage tank 1 of the ship to be received is sent to the oily sewage oil separation and sedimentation tank 3 by the oily sewage receiving device 2. If the oily sewage tank 1 of the ship to be received contains washing water, use a steam reciprocating pump to pump to the oily sewage oil separation tank 3 through the first oily sewage meter 19; if the oily sewage tank 1 of the ship to be received is a tank The bottom water is sucked into the oily sewage oil separation tank 3 through the second oily sewage meter 20 by a vacuum receiving device; the oily sewage in the oily sewage tank 1 of the receiving ship can also be sent to Oily sewage oil separation tank 3.
[0027] There are five tanks in the oil-sewage oil-separation and sedimentation tank 3. There are the first oily sewage tank 3S1 and the seco...
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The invention relates to a device for treating oil stain water in an oil stain vessel and a method thereof, which belongs to the field of vessel sewage treatment and environment protection. The oil stain water treating device and the method treat the oil stain water by combining the pretreatment, middle treatment and post-treatment together. The pretreatment is finished in a multilevel oil separation and sedimentation chamber. The time between entering and flowing out is about 42 hours; the middle treatment is finished in the inclined board oil separation chamber and the gas floating chamber; the post-treatment adopts the multilevel filtering device. After the oil stain water in the vessel is treated through the multilevel oil separation and sedimentation, the inclined board oil separation, the gas floating and a multilevel filtering, in the drained oil stain water, the oil concentration is less than or equal to 5mg / L, even the oil concentration is less than or equal to 2mg / L. The oil stain treating device has the advantages of low investment, stable operation with safety and reliability, as well as simple, reliable and economic process of treating the oil stain water. The oil stain can be recycled with remarkable economic benefits.
Description
Technical field [0001] The invention relates to a device and a method for treating oily sewage from an oily sewage ship, which belongs to the field of ship sewage treatment and environmental protection. Background technique [0002] The methods for the treatment of oily wastewater from ships mainly adopt physical, chemical and biological methods. The physical method is a method of separating oil and water by using physical phenomena such as oil-water density difference or filtration and adsorption. The main feature is to separate the oil and water without changing the chemical properties of the oil; the chemical method is to put a flocculant or aggregating agent into the oily sewage, among which flocculant It can make the oil condense into a gel and precipitate, and the aggregating agent makes the oil agglomerate into a colloid to float, so as to achieve a method of oil-water separation; biological methods include activated sludge method and biological filter. According to the na...
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IPC IPC(8): C02F1/40
Inventor 马坤林焰张明霞金朝光吴俊杰李树立纪卓尚王运龙于雁云
Owner DALIAN UNIV OF TECH