Treating method and treating device for highly-emulsified oily sewage

The technology of a treatment device and a treatment method is applied to the oily sewage treatment device and the oily sewage separation and treatment field containing emulsified oil, so as to prevent back-dissolution, facilitate re-aggregation and increase, accelerate floating, and increase the coverage area.

Active Publication Date: 2015-12-30
DONGTAI CITY DONGFANG MARINE FITTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing oily sewage treatment methods can no longer meet such stringent requirements, especially for oily emulsions with highly dispersed oil d

Method used

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  • Treating method and treating device for highly-emulsified oily sewage
  • Treating method and treating device for highly-emulsified oily sewage
  • Treating method and treating device for highly-emulsified oily sewage

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Embodiment Construction

[0049] exist figure 1 In the oily wastewater treatment process shown, the heavily emulsified oily wastewater is taken as an example. The demulsifier cylinder 105 of the demulsifier 1 is fixed with a material separation orifice 101, and the demulsification orifice 101 separates the demulsifier cylinder 105 into a demulsifier filling cavity located at the upper part of the cylinder and an oil chamber located at the lower part. The sewage buffer chamber is filled with a solid-phase demulsifier 102 in the demulsifier filling chamber, and the solid-phase demulsifier 102 is a solid slow-release demulsifier. The sewage pump 19 pumps heavily emulsified oily sewage into the oily sewage buffer chamber of the demulsifier 1, and the oily sewage passes through the partition through hole 107 on the partition orifice 101 and flows evenly through the demulsifier filling chamber to break the solid phase. The gaps of the emulsion 102 are fully and evenly skimmed by the massive solid-phase demu...

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Abstract

The invention discloses a treating method for highly-emulsified oily sewage. The treating method includes the following steps: enabling the oily sewage to flow through a solid-phase demulsifier; subjecting the oily sewage to electrolytic condensation; performing initial filtration; separating the oily sewage into sump oil and separated water through oil-water separation; discharging the sump oil, and refinedly filtering and discharging the separated water; when the discharged water does not meet discharge standards, returning the refinedly-filtered water to repeat the steps. A treating device for the highly-emulsified oily sewage comprises an electric flocculation device, an initial filter and an oil-water separator which are communicated in sequence. A sewage input pipe of the electric flocculation device penetrates a cylinder of the electric flocculation device to be obliquely arranged on the cylinder of the electric flocculation device. A stack aggregation and separation device is arranged in the oil-water separator. A demulsification device is communicated in front of the electric flocculation device. A filter material filtering device (10) is communicated in rear of the oil-water separator. The treating method can promote efficient aggregation and separation of oil droplets in oil-in-water type emulsion liquid and is particularly suitable for treatment of the highly-emulsified oily sewage.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a method for separating and treating oily sewage containing emulsified oil. The invention also relates to an oily sewage treatment device using the oily sewage treatment method. Background technique [0002] Oily sewage is a large-scale and wide-ranging pollution source. According to relevant data, at least 5-10 million tons of oil enter water bodies through various channels in the world every year. Oily wastewater comes from a wide range of sources, mainly from ships, petrochemicals, steel, gas, machinery and other industrial enterprises, as well as railway transportation, textile light industry and people's lives will produce a large amount of oily wastewater. [0003] The emulsion containing emulsified oil is the most difficult to separate and treat in oily water. Emulsion is an oil-in-water oily sewage mainly composed of oil, emulsifier and water. Since the emulsi...

Claims

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Application Information

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IPC IPC(8): C02F9/06
Inventor 梅东兴施悦张坤刘丹丹梅冬生吴义生王俊华
Owner DONGTAI CITY DONGFANG MARINE FITTING
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