Purification method of high-emulsified-oil-content sewage

A technology of oily sewage and emulsified oil, which is applied in the chemical industry, can solve problems such as poor results, and achieve the effects of quick response, stable and reliable process control, and easy implementation and management

Inactive Publication Date: 2017-08-22
UNIV OF SHANGHAI FOR SCI & TECH
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Problems solved by technology

[0003] Aiming at the above-mentioned technical problems in the prior art, the present invention provides a method for purifying sewage with high emulsified oil content. The method for purifying sewage with high emulsified oil content will solve the problem of dealing with highly emulsified oil in the prior art. Poor technical problems with sewage

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  • Purification method of high-emulsified-oil-content sewage

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Embodiment Construction

[0012] Below in conjunction with accompanying drawing and specific embodiment the patent of the present invention is described further:

[0013] Such as figure 1 As shown, the present invention provides a purification method for highly emulsified oily sewage, adding a demulsifier to the highly emulsified oily sewage, adding 1.0-5.0 mg of demulsifier per liter of emulsified oily sewage, and then demulsifying the high emulsified oily sewage Input into the pipeline mixer 4, fully mix, and then use the high-speed dispersion pump 5 to perform high-speed dispersion treatment on high-emulsified oily sewage, and the treated liquid is input into the oil-water separator 6. After the reaction, the floating oil is regularly discharged or passed through the oil-water After monitoring by the interface detector, it is discharged through the oil receiving port, and the purified water is discharged through the water outlet. In this way, the sewage with high emulsified oil content is purified. ...

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Abstract

The invention provides a purification method of high-emulsified-oil-content sewage. Demulsifiers are added into the high-emulsified-oil-content sewage; 1.0 to 5.0mg of the demulsifiers are added into per liter of the high-emulsified-oil-content sewage; then, the high-emulsified-oil-content sewage is input into a pipeline mixer to be sufficiently mixed; next, a high-speed dispersion pump is used for performing high-speed dispersion treatment on the high-emulsified-oil-content sewage; the treated liquid is input into an oil-water separator; after the reaction, the floating oil is regularly discharged or is discharged through an oil collecting opening after being monitored by an oil water interface detection instrument; the purified water is discharged through a water outlet opening. Therefore, the high-emulsified-oil-content sewage is purified. The invention also provides a device for realizing the purification method. The characteristic that the emulsified oil specific weight in the oil and gas field is small is utilized; in the water-in-oil and oil-in-water condition existence state, the mechanical and chemical treatment combination method is utilized; the goals of fast demulsification and sewage purification are achieved.

Description

technical field [0001] The invention belongs to the field of chemical industry and relates to a sewage treatment technology, in particular to a method for purifying sewage with high emulsified oil content. Background technique [0002] After the oil and gas field enters the middle and late stages of exploitation, measures to increase production are often taken. After the introduction of measures, several characteristics appear: (1) increased water volume; (2) highly emulsified sewage; (3) high polymer content. Especially the sewage with high emulsified oil content will slowly precipitate after entering the reinjection system or evaporation pond, affecting the water quality and subsequent treatment, thus directly affecting the production of oil and gas fields. Contents of the invention [0003] Aiming at the above-mentioned technical problems in the prior art, the present invention provides a method for purifying sewage with high emulsified oil content. The method for p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F101/32C02F103/10
CPCC02F1/40C02F1/682C02F9/00C02F2101/325C02F2103/10
Inventor 邬春学洪骧龙邬群辉李言章
Owner UNIV OF SHANGHAI FOR SCI & TECH
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