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Drilling oil-containing wastewater treatment device

A technology for wastewater treatment and drilling, which is applied in the field of oily sewage treatment in oil fields, can solve the problems of unsatisfactory treatment effect and high treatment cost, and achieve the effects of good social and economic benefits, simplified process and good application prospect.

Inactive Publication Date: 2018-07-10
黑龙江吉纳森生物工程股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Aiming at the problems of unsatisfactory treatment effect and high treatment cost in the current treatment of oily wastewater from drilling, the present invention provides a treatment device for oily wastewater from drilling to realize the low-cost and up-to-standard discharge treatment of oily wastewater from drilling in various complex oil and gas fields

Method used

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  • Drilling oil-containing wastewater treatment device
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Embodiment Construction

[0020] Below in conjunction with accompanying drawing embodiment, the present invention will be further described:

[0021] (1) The incoming water is firstly adjusted for water quality, and then separated and removed by gravity sedimentation to remove most of the coarse suspended solids and slick oil in the wastewater;

[0022] (2) The homogenized sewage flows to the coagulation and sedimentation treatment unit, and the pH of the water is adjusted to 8-10 by adding lime milk, and then 50-500mg / L of polyaluminum chloride and 1-10mg / L of For polyacrylamide, the flocs produced are removed by air flotation, and the suspended solids with high density are removed by gravity sedimentation;

[0023] (3) The coagulation and sedimentation effluent enters the fiber rotary fruit filter device to further remove suspended solids in the water;

[0024] (4) The wastewater treated in step (3) is oxidized to remove COD and ammonia nitrogen and reduce heavy metals through electrolysis;

[0025...

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Abstract

The invention discloses a drilling oil-containing wastewater treatment device, and belongs to the field of oilfield oil-containing wastewater treatment. The device is composed of a device housing, a sediment scraping machine, a coagulation air floatation module, a fiber rotary disc filtering module, a ruthenium-iridium coating electrolysis module and an activated carbon filtering module. The treatment technology comprises the five steps of water quality regulation, coagulating sedimentation, filtering, oxidation and activated carbon adsorption. The drilling oil-containing wastewater treatmentdevice is suitable for treatment of drilling oil-containing wastewater, and the problem about water environment pollution caused by over-high content of oil, suspended solids and COD in the drilling oil-containing wastewater is solved.

Description

technical field [0001] The invention relates to the field of oily wastewater treatment in oil fields, in particular to a treatment device for drilling oily wastewater. Background technique [0002] A large amount of drilling oily wastewater is associated with the drilling process of oil extraction. This type of wastewater is a mixture of high-fold dilution of drilling mud and oil, including waste mud, mud loss during drilling and drilling operations, as well as cuttings and ground equipment and Rinse water for drilling tools. Due to the characteristics of multiple points, wide area, intermittent discharge and uncontrollable discharge of oily wastewater from drilling, the impurities and properties in wastewater are closely related to the composition of drilling mud and the properties of rock formations, that is, different oil and gas fields, different drilling areas, Different well depths and different mud materials result in different properties of the sewage formed during ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/06C02F103/10
CPCC02F9/00C02F1/4672C02F1/4676C02F1/5236C02F1/56C02F1/66C02F1/001C02F1/24C02F1/283C02F1/40C02F2103/10C02F2001/46133C02F2001/46138C02F2001/007
Inventor 盖忠辉蒋立民李鹏
Owner 黑龙江吉纳森生物工程股份有限公司
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