CN105293739A - Device for treating oilfield produced water - Google Patents
Device for treating oilfield produced water Download PDFInfo
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- CN105293739A CN105293739A CN201510836757.9A CN201510836757A CN105293739A CN 105293739 A CN105293739 A CN 105293739A CN 201510836757 A CN201510836757 A CN 201510836757A CN 105293739 A CN105293739 A CN 105293739A
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Abstract
The invention provides a device for treating oilfield produced water. The device comprises an air floatation treatment device and an ultrafilter membrane treatment device. The air floatation treatment device comprises a dissolved air device, an air floatation sludge scraping device, an inclining plate filling device, an air floatation sludge discharge device, an oil collection and discharge device, and a control device. The ultrafilter membrane treatment device comprises an ultrafilter membrane filtering device, an air compressor, a membrane backwash pump, an alkali cleaning device, an acid cleaning device and an organic solvent cleaning device. The treating process of the oilfield produced water can be divided into air floatation treatment process and ultrafilter membrane treatment process with the air floatation treatment device and the ultrafilter membrane treatment device. The most floating oil and a few suspended matters in water can be removed in air floatation treatment process, and the oil, suspended particles and the like in water can be intercepted and removed in ultrafilter membrane treatment process. The final water oil content is less than 5 mg/L, the suspended matter content is less than 1 mg/L, and the median particle diameter is less than 1 [mu]m. The requirement of oilfield low permeability reservoir reinjection water standard or reflux standard can be met.
Description
Technical field:
The present invention relates to water technology, particularly relate to the technology that oil extraction waste water oil removing, oil removal and reduction viscosity carry out advanced treatment, particularly a kind of oil field produced water treatment device.
Background technology:
Along with the development of oil-field development technology, tertiary oil recovery technology has become one of major measure improving oil recovery factor.But tertiary oil recovery is while raising oil recovery factor, and its recovered water oily water separation difficulty strengthens, and is embodied in: the viscosity of recovered water increases; Oil droplet in recovered water diminishes; Water-oil interface moisture film intensity increases; Between oil droplet, coalescence becomes the ability of large oil droplet to decline; The complicated phenomenon aggravation of water quality; In water, the removal difficulty of oil-containing and suspended substance increases, and disposing polluted water in oil effect can not be satisfied with.
Summary of the invention:
The object of the present invention is to provide a kind of oil field produced water treatment device, described this kind of oil field produced water treatment device will solve the technical problem that in prior art, in tertiary oil recovery technological process, wastewater treatment efficiency is undesirable.
This oil field produced water treatment device of the present invention, comprise an air flotation processing device and a ultrafiltration membrane treatment device, wherein, described air flotation processing device comprises air-dissolving apparatus, air supporting slag scraper, sloping plate filler device, air-float mud discharger, receive oily discharge equipment and control device, described ultrafiltration membrane treatment device comprises ultrafiltration membrane filter device, air compressor machine, film backwashing pump, alkali washing unit, acid cleaning unit and organic solvent washing unit, dissolving is included in air-dissolving apparatus, molten gas releasing device and air dissolved pump, sludge pump is included in air-float mud discharger, two slag scrapers are included in air supporting slag scraper, the entrance of air-dissolving apparatus is connected with total water input channel, the outlet of air-dissolving apparatus is connected with the entrance of air supporting slag scraper, sloping plate filler device is arranged in air supporting slag scraper, air supporting slag scraper comprises two outlets, described two outlets are respectively with the entrance of air-float mud discharger with receive oily discharge equipment and be connected, the outlet of air-float mud discharger is connected with the entrance of ultrafiltration membrane treatment device, ultrafiltration membrane filter device includes water input, water output is produced in ultrafiltration, backwash water input aperture, backwash water relief outlet and pressurized air input aperture, pressurized air input aperture is connected with air compressor machine, backwash water input aperture is connected with film backwashing pump, by pipeline and alkali washing unit on the input aperture of film backwashing pump, cover acid cleaning unit is connected with organic solvent washing unit.
Further, 10 groups of sloping plate filler devices are included in air supporting slag scraper.
Principle of work of the present invention is: oil field produced water treatment procedure is divided into air-flotation process process section and ultrafiltration membrane treatment process section by air flotation processing device and ultrafiltration membrane treatment device.Air-flotation process process section is equipped with receives oily discharge equipment.Molten gas mode adopts return-flow type pressure air-dissolving technique.Former water contacts in air-floating apparatus with the dissolved air water of air dissolving system output, mix, small bubble surface adheres to former oil-in-water pearl and floc particle floats to the water surface, can be put away in time by the Oil scraper in oil recovery system after floating to the water surface, after avoiding bubbles burst, oil slick presents suspended state again.Ultrafiltration membrane treatment process section utilizes its ultra-filtration filters element to carry out depth type filtration process in oil extraction waste water, oil extraction waste water after the oil removing of air-flotation process process section enters into ultrafiltration membrane treatment process section, and multiple ultra-filtration membrane piles up the unified of automation system and controls the relatively independent ultrafiltration membrane treatment host system of lower composition.After oil extraction waste water with pressure enters ultrafiltration membrane treatment host system, through the filtration treatment of ultra-filtration membrane, the materials such as the oil-containing in water and suspended particle are trapped removal, and water quality obtains purifying treatment.Ensure that final outflow water oil length is less than 5mg/L, suspended substance is less than 1mg/L, and median particle size is less than 1 μm.Final outflow water oil length is less than 5mg/L, and suspended substance is less than 1mg/L, and median particle size is less than 1 μm.Air-flotation process process section and ultrafiltration membrane treatment process section adopt programmable logic controller to complete the automatic control of this process section separately, and are connected to a DCS distributed control system, realize centralized displaying and comprehensive coordinate by DCS distributed control system.
The present invention compares with prior art, and its effect is actively with obvious.The present invention utilizes air flotation processing device and ultrafiltration membrane treatment device that oil field produced water treatment procedure is divided into air-flotation process process section and ultrafiltration membrane treatment process section.After water enters air-flotation process process section, remove the most of oil slick in water and a small amount of suspended substance; Again through ultra-filtration membrane art breading, the materials such as the oil-containing in water and suspended particle are trapped removal, and ensure that final outflow water oil length is less than 5mg/L, suspended substance is less than 1mg/L, and median particle size is less than 1 μm.Reach oil field low-permeability oil deposit reinjected water standard or return and join standard-required.
Accompanying drawing illustrates:
Fig. 1 is the structural representation of a kind of oil field produced water treatment device of the present invention.
Fig. 2 is the principle of work schematic diagram of the ultrafiltration membrane treatment device in a kind of oil field produced water treatment device of the present invention.
Embodiment:
Embodiment 1:
As depicted in figs. 1 and 2, the oil field produced water treatment device of one of the present invention, comprise an air flotation processing device 1 and a ultrafiltration membrane treatment device 2, wherein, described air flotation processing device 1 comprises air-dissolving apparatus 3, air supporting slag scraper 4, sloping plate filler device 5, air-float mud discharger 6, receive oily discharge equipment 7 and control device, described ultrafiltration membrane treatment device 2 comprises ultrafiltration membrane filter device 13, air compressor machine 8, film backwashing pump 9, alkali washing unit 10, acid cleaning unit 11 and organic solvent washing unit 12, dissolving is included in air-dissolving apparatus 3, molten gas releasing device and air dissolved pump, sludge pump is included in air-float mud discharger 6, two slag scrapers are included in air supporting slag scraper 4, the entrance of air-dissolving apparatus 3 is connected with total water input channel, the outlet of air-dissolving apparatus 3 is connected with the entrance of air supporting slag scraper 4, sloping plate filler device 5 is arranged in air supporting slag scraper 4, air supporting slag scraper 4 comprises two outlets, described two outlets are respectively with the entrance of air-float mud discharger 6 with receive oily discharge equipment 7 and be connected, the outlet of air-float mud discharger 6 is connected with the entrance of ultrafiltration membrane treatment device 2, ultrafiltration membrane filter device 13 includes water input, water output is produced in ultrafiltration, backwash water input aperture, backwash water relief outlet and pressurized air input aperture, pressurized air input aperture is connected with air compressor machine 8, backwash water input aperture is connected with film backwashing pump 9, by pipeline and alkali washing unit 10 on the input aperture of film backwashing pump 9, acid cleaning unit 11 is connected with organic solvent washing unit 12.
Further, 10 groups of sloping plate filler devices 5 are included in air supporting slag scraper 4.
The principle of work of the present embodiment is: oil field produced water treatment procedure is divided into air-flotation process process section and ultrafiltration membrane treatment process section by air flotation processing device 1 and ultrafiltration membrane treatment device 2.Air-flotation process process section is equipped with receives oily discharge equipment 7.Molten gas mode adopts return-flow type pressure air-dissolving technique.Former water contacts in air-floating apparatus with the dissolved air water of air dissolving system output, mix, small bubble surface adheres to former oil-in-water pearl and floc particle floats to the water surface, can be put away in time by the Oil scraper in oil recovery system after floating to the water surface, after avoiding bubbles burst, oil slick presents suspended state again.Ultrafiltration membrane treatment process section utilizes its ultra-filtration filters element to carry out depth type filtration process in oil extraction waste water, oil extraction waste water after the oil removing of air-flotation process process section enters into ultrafiltration membrane treatment process section, and multiple ultra-filtration membrane piles up the unified of automation system and controls the relatively independent ultrafiltration membrane treatment host system of lower composition.After oil extraction waste water with pressure enters ultrafiltration membrane treatment host system, through the filtration treatment of ultra-filtration membrane, the materials such as the oil-containing in water and suspended particle are trapped removal, and water quality obtains purifying treatment.Ensure that final outflow water oil length is less than 5mg/L, suspended substance is less than 1mg/L, and median particle size is less than 1 μm.Final outflow water oil length is less than 5mg/L, and suspended substance is less than 1mg/L, and median particle size is less than 1 μm.Air-flotation process process section and ultrafiltration membrane treatment process section adopt programmable logic controller to complete the automatic control of this process section separately, and are connected to a DCS distributed control system, realize centralized displaying and comprehensive coordinate by DCS distributed control system.
Claims (3)
1. an oil field produced water treatment device, comprise an air flotation processing device and a ultrafiltration membrane treatment device, it is characterized in that: described air flotation processing device comprises air-dissolving apparatus, air supporting slag scraper, sloping plate filler device, air-float mud discharger, receive oily discharge equipment and control device, described ultrafiltration membrane treatment device comprises ultrafiltration membrane filter device, air compressor machine, film backwashing pump, alkali washing unit, acid cleaning unit and organic solvent washing unit, dissolving is included in air-dissolving apparatus, molten gas releasing device and air dissolved pump, sludge pump is included in air-float mud discharger, two slag scrapers are included in air supporting slag scraper, the entrance of air-dissolving apparatus is connected with total water input channel, the outlet of air-dissolving apparatus is connected with the entrance of air supporting slag scraper, sloping plate filler device is arranged in air supporting slag scraper, air supporting slag scraper comprises two outlets, described two outlets are respectively with the entrance of air-float mud discharger with receive oily discharge equipment and be connected, the outlet of air-float mud discharger is connected with the entrance of ultrafiltration membrane treatment device, ultrafiltration membrane filter device includes water input, water output is produced in ultrafiltration, backwash water input aperture, backwash water relief outlet and pressurized air input aperture, pressurized air input aperture is connected with air compressor machine, backwash water input aperture is connected with film backwashing pump, by pipeline and alkali washing unit on the input aperture of film backwashing pump, cover acid cleaning unit is connected with organic solvent washing unit.
2. a kind of oil field produced water treatment device as claimed in claim 1, is characterized in that: include 10 groups of sloping plate filler devices in air supporting slag scraper.
3. a kind of oil field produced water treatment device as claimed in claim 1, is characterized in that: air flotation processing device is provided with viscosity detecting device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510836757.9A CN105293739A (en) | 2015-11-26 | 2015-11-26 | Device for treating oilfield produced water |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510836757.9A CN105293739A (en) | 2015-11-26 | 2015-11-26 | Device for treating oilfield produced water |
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| CN105293739A true CN105293739A (en) | 2016-02-03 |
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| CN201510836757.9A Pending CN105293739A (en) | 2015-11-26 | 2015-11-26 | Device for treating oilfield produced water |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107827286A (en) * | 2017-11-30 | 2018-03-23 | 宁波中骏森驰汽车零部件股份有限公司 | A kind of electroplating wastewater recovery process and electroplating wastewater reclaimer |
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| CN1854093A (en) * | 2005-04-25 | 2006-11-01 | 中蓝膜技术有限公司 | Oily sewage treatment and treater thereof |
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| CN201424408Y (en) * | 2009-05-19 | 2010-03-17 | 深圳市立雅水务发展有限公司 | Integrated wastewater treatment equipment for oil fields |
| CN102249370A (en) * | 2011-05-16 | 2011-11-23 | 云南今业生态建设集团有限公司 | High efficiency integrated processor for oily water |
| CN203419823U (en) * | 2013-08-15 | 2014-02-05 | 中国石油天然气股份有限公司 | Combined type oilfield produced water processing device |
| CN103864174A (en) * | 2012-12-10 | 2014-06-18 | 武汉江扬环境科技有限公司 | Oily sewage oil eliminator |
| CN104030387A (en) * | 2014-05-27 | 2014-09-10 | 大庆高新区百世环保科技开发有限公司 | Efficient air floatation treatment integrated device for ternary composite flooding oilfield produced water |
| US20150034555A1 (en) * | 2013-08-01 | 2015-02-05 | Brian C. Speirs | Treatment of De-Oiled Oilfield Produced Water or De-Oiled Process Affected Water From Hydrocarbon Production |
| CN205170540U (en) * | 2015-11-26 | 2016-04-20 | 安洁士环保（上海）股份有限公司 | Oil field extraction water treatment facilities |
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2015
- 2015-11-26 CN CN201510836757.9A patent/CN105293739A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1854093A (en) * | 2005-04-25 | 2006-11-01 | 中蓝膜技术有限公司 | Oily sewage treatment and treater thereof |
| CN201010539Y (en) * | 2006-12-27 | 2008-01-23 | 朱同德 | Treatment device for waste water containing oil |
| CN201424408Y (en) * | 2009-05-19 | 2010-03-17 | 深圳市立雅水务发展有限公司 | Integrated wastewater treatment equipment for oil fields |
| CN102249370A (en) * | 2011-05-16 | 2011-11-23 | 云南今业生态建设集团有限公司 | High efficiency integrated processor for oily water |
| CN103864174A (en) * | 2012-12-10 | 2014-06-18 | 武汉江扬环境科技有限公司 | Oily sewage oil eliminator |
| US20150034555A1 (en) * | 2013-08-01 | 2015-02-05 | Brian C. Speirs | Treatment of De-Oiled Oilfield Produced Water or De-Oiled Process Affected Water From Hydrocarbon Production |
| CN203419823U (en) * | 2013-08-15 | 2014-02-05 | 中国石油天然气股份有限公司 | Combined type oilfield produced water processing device |
| CN104030387A (en) * | 2014-05-27 | 2014-09-10 | 大庆高新区百世环保科技开发有限公司 | Efficient air floatation treatment integrated device for ternary composite flooding oilfield produced water |
| CN205170540U (en) * | 2015-11-26 | 2016-04-20 | 安洁士环保（上海）股份有限公司 | Oil field extraction water treatment facilities |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107827286A (en) * | 2017-11-30 | 2018-03-23 | 宁波中骏森驰汽车零部件股份有限公司 | A kind of electroplating wastewater recovery process and electroplating wastewater reclaimer |
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Application publication date: 20160203 |