Marine oil-water separator and separation method thereof

Abstract

The invention relates to a marine oil-water separator and a separation method thereof. The marine oil-water separator comprises a case body, the side wall of which is provided with an inlet and an outlet. The marine oil-water separator is characterized in that the case body is divided into four separation cavities, progressive separation and filtration is carried out, a first separation cavity carries out primary separation by an advection type Brown sloping plate, a second separation cavity carries out emulsion breaking by a steam heating emulsion breaking device and solid emulsion, a third separation cavity carries out filtration by a medium-grade filtration core and a fourth separation cavity carries out ultrafiltration by an ultrafiltration core; and the separation method of the marine oil-water separator comprises four steps of primary separation: primary separation, emulsion breaking, filtration and ultrafiltration. The oil-water separator has small volume and saves the space of a boat; the oil-water separator adopts the residual heat of an engine or other steam energy sources to work, a steam pipe is in a spiral type structure and has uniform and fast heat transfer, and the efficient utilization of energy sources is realized; and the content of oil in the bilge water of the boat after being processed by the four steps of primary separation, emulsion breaking, filtration and ultrafiltration is less than 3ppm and far exceeds an environmental protection emission standard stated by the international maritime organization.

Description

technical field [0001] The invention belongs to the technical field of oil-water separation treatment, in particular to an oil-water separator for boats and a separation method thereof. Background technique [0002] Ships and submarines will burn raw materials and discharge oily wastewater during navigation. The oily wastewater in the bilge of ships sometimes has an oil content as high as 2000ppm. If it is discharged directly, it will seriously pollute water resources and bring great harm. Therefore, the implementation of Oil-water separation to remove the oil is very necessary. Most of the oil-water separation in the prior art is through gravity separation or gravity-coarse-graining-filtration combined separation. Although these separation methods can separate most of the dirty oil, but in the end The ppm value in the separated discharge water is still high, which is still far from the increasingly stringent environmental protection requirements. If a slanted plate sediment...

AI Technical Summary

Problems solved by technology

[0002] Ships and submarines will burn raw materials and discharge oily wastewater during navigation. The oily wastewater in the bilge of ships sometimes has an oil content as high as 2000ppm. If it is discharged directly, it will seriously pollute water resources and bring great harm. Therefore, the implementation of Oil-water separation to remove the oil is very necessary. Most of the oil-water separation in the prior art is through gravity separation or gravity-coarse-graining-filtration combined separation. Although these separation methods can separate most of the dirty oil, but in the end The ppm value in the separated discharge water is still high, which is still far from the increasingly stringent environmental protection requirements. If a slanted plate sedimentation tower or a pre-filter is used, it will occupy a large area, the machine connection is complicated, and it can only work alone. If and If the general oil-water separator is connected in series, additional pipeline valves must be added, which is not suitable for installation and use in places with small spaces such as ships.

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