Inclined tube oil separation system for treating low-temperature harbor district oily sewage

Abstract

The invention discloses an inclined tube oil separation system for treating low-temperature harbor district oily sewage. The inclined tube oil separation system comprises a plurality of inclined tube oil separation tanks connected in parallel and a steam tracing system; each inclined tube oil separation tank comprises a floating oil zone, a water oil separation zone and a deposition zone, which are arranged from top to bottom the water oil separation zone is provided with a plurality of rows of oil separation inclined tube groups arranged at the intervals of 85-100 mm in parallel, each row of the oil separation inclined tube group inclines toward a side wall and forms an included angle of 60-65 degrees with the horizontal plane, and a liquid inlet is formed in the side of the side wall; each oil separation inclined tube group is formed by sequentially arranging and fixing a plurality of tube bodies and hollow tubes, and the radial cross section of a cavity of the hollow tube is hexagonal; the water inflow state and the water discharge state of the inclined tube oil separation system for treating low-temperature harbor district oily sewage are stable, a plurality of inclined tube oil separation systems are installed in parallel and used according to the requirements on site limitation and the handling capacity in use, the production of the floccule in the early stage is not taken into consideration, each inclined tube oil separation system can realize the handling capacity of 1000 m<3> maximally, and compared with an existing inclined tube oil separation system of the same size, the day treatment efficiency of sewage is improved by 15%.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to an inclined pipe oil separation system for treating oily sewage in low-temperature port areas. Background technique [0002] With the rapid development of urban ports, the throughput of crude oil, coal, ore, etc. in the port area has increased significantly. Correspondingly, a large amount of oily, Sewage containing coal slag and dust; in addition, enterprises established in the port area specializing in crude oil processing and packaging are becoming more and more diversified, which has greatly increased the amount of sewage treatment in the port area, resulting in a serious decline in the treatment efficiency of the existing sewage treatment system in the port area. To meet the needs of the normal operation of the system, it is necessary to carry out a comprehensive and effective transformation and upgrade of the existing processing system. [0003] In the existing oi...

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Problems solved by technology

[0002] With the rapid development of urban ports, the throughput of crude oil, coal, ore, etc. in the port area has increased significantly. Correspondingly, a large amount of oily, Sewage containing coal slag and dust; in addition, enterprises established in the port area specializing in crude oil processing and packaging are becoming more and more diversified, which has greatly increased the amount of sewage treatment in the port area, resulting in a serious decline in the treatment efficiency of the existing sewage treatment system in the port area. To meet the needs of the normal operation of the system, it is necessary to carry out a comprehensive and effective transformation and upgrade of the existing processing system

[0003] In the existing oily sewage treatment technology, the oily, cinder-containing, and dusty sewage are generally treated first by the method of "stationary separation + inclined tube oil separation + coagulation air flotation". However, due to the limited use of sewage treatment centers, The area available for construction is small, so it is not realistic to increase the treatment device, and it will greatly restrict the transformation process. Therefore, improvements should be made based on traditional equipment to reduce the occupied area of ​​the site and increase the treatment efficiency. Combined with the current Biochemical treatment process and membrane treatment process to build a complete sewage treatment system

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