CN1792840A - Film precision filtering method of oil extracting sewage - Google Patents
Film precision filtering method of oil extracting sewage Download PDFInfo
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- CN1792840A CN1792840A CN 200510126617 CN200510126617A CN1792840A CN 1792840 A CN1792840 A CN 1792840A CN 200510126617 CN200510126617 CN 200510126617 CN 200510126617 A CN200510126617 A CN 200510126617A CN 1792840 A CN1792840 A CN 1792840A
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Abstract
A precise membrane filtering method for treating the sewage generated in oil field includes such steps as removing oil three times, chemical flocculating deposition, coarse filtering, and precise membrane filter with a medical water-treating device reformed in such areas that the horizontal type is changed to vertical type, two boosting pumps are respectively installed to the sewage inlet and outlet trunks and alternatively working, and the concentrated water is filtered twice and then drained in coarse filtering pool.
Description
Technical field
The present invention relates to the water technology of oilfield produced water, particularly adopt filtering membrane to carry out the method for sewage secondary filter.
Background technology
As everyone knows, contain a large amount of moisture content in the extraction liquid of oil industry, water accounts for the 45-95% of total amount, and the waste water after oily water separation contains oiliness suspended substance, solid impurity, bacterium etc., has both wasted water as direct discharging, causes ecological pollution again; As directly doing re-injection water perfusion down-hole, can have a strong impact on the output of oil production again.Thereby numerous strong-willed persons are paying close attention to the problem that the processing of oil extraction-generated waste water and re-injection utilize, and CN03112720.7 discloses " the oil field re-injection with the treatment process of recovered water " of Wang Yana, solves with biological treatment and membrane separation technique bonded method; CN02111402.1 disclose triumphant can high-tech " utilizing membrane separation technique to carry out oil production waste water in oil field advanced treatment and cyclic utilization method " of engineering corporation filter layer by layer with micro-filtration or each operation of ultrafiltration, nanofiltration or reverse osmosis and realize.Two patents have all been mentioned the problem of membrane filtration, but all do not explain the complete technical scheme of membrane filtration and relevant device, the amount that particularly among ten embodiment of back one patent all is " accurately measuring 200 liters of oil production waste water in oil field " is operated, and will be so a spot of " filtrate deliver to pressurizing point as re-injection or polymkeric substance configuration water conservancy with ", the worry that does not very meet the production practice needs is seemingly arranged.
By retrieval, do not find as yet to handle the maturation method of oil extraction-generated waste water and the report of relevant device with membrane filtration technique.
In electronic industry, biological-pharmacy, become mature technology with the filtering membrane water quality treatment, they all meet the water of domestic water standard as process object with nature, compare with oil extraction-generated waste water, the composition of " impurity ", content, physicochemical property difference are very big, as if directly being diverted from one use to another in oil extraction-generated waste water, handles the membrane filtering method of biological-pharmacy, to seriously stop up fenestra, can't make progress.
Summary of the invention
The technical problem to be solved in the present invention is: a kind of film precision filtering method that can overcome the oil extraction-generated waste water of above-mentioned defective is provided, can directly uses in the field produces practice as a kind of complete membrane filtration technique scheme.
Technical solution of the present invention is: after carrying out three times conventional oil removings, chemical flocculation sedimentation, coarse filtration operation in early stage earlier, and particle diameter≤5 μ m, bacterial count≤10 for the treatment of impurity
4-10
6Individual/milliliter, just can carry out film precision filtering, this filters the general water treatment device of industry such as adopting bio-pharmaceuticals, has done the improvement of following three aspects:
(1) converted horizontal is vertical;
(2) on the total rising pipe of oil extraction-generated waste water water inlet manifold and water filling topping-up pump is installed all, two-position controller is provided with and makes the two topping-up pumps mechanism of work by turns;
(3) the total rising pipe of condensed water connects next stage film precision filtering device again, carries out cascade filtration, improves and filters the water filling total amount that obtains.Then with cascade filtration and condensed water input coarse filtration pond.
Aforesaid film precision filtering method, after the operation in early stage such as described coarse filtration, oil removing filtration, the sand that also can carry out oil absorbent material again filters, the activated carbon filtration operation, particle diameter≤5 μ m, bacterial count≤10 for the treatment of impurity
4-10
6Individual/milliliter, just can carry out film precision filtering.
After adopting aforesaid method that oil extraction-generated waste water is carried out film precision filtering, impurity particle diameter in its water filling≤0.5 μ m, bacterial count≤10
3-10
5Individual/milliliter, meet the standard-required that injects water.
Description of drawings
Accompanying drawing is this film precision filtering device structural representation.
Embodiment
The present invention is described in detail below in conjunction with embodiment and with reference to accompanying drawing: from oil well behind the extraction crude oil; after three oil removings, chemical flocculation sedimentation and coarse filtration; still contain a large amount of big particle diameter impurity and flora; also need oil absorbent material to remove residual greasy dirt generally speaking; hole with the anti-clogging plug filtering membrane; if filter with sand again; activated carbon filtration; remove colloid, the suspended substance of the above particle diameter of 100 μ m; absorbed portion organism and pigment; then more help protection, also more help the raising of the quality and the quantity of water treatment filtering membrane.Early stage, operation need be done several roads, then should consider the factors such as cost, efficient of filtering water quality, processing, in general, and impurity particle diameter≤5 μ m, bacterial count≤10
4-10
6Individual/milliliter, can enter the film precision filtering operation.
The present invention adopts the ultra dense strainer of rolling, be the general water treatment device of industry such as bio-pharmaceuticals, with original horizontal change into vertical, filtering membrane 4 is selected PVDF membrane for use, aperture≤0.2 μ m, this film is the multiwalled laminate structure, be a package, be called the volume film, its center is that having of engineering plastics making is vertical, the cylindric curl-up film core 2 of horizontal limbers 6, outermost is a shell 5 with cover, the shell top has sewage water inlet pipe 1, below that condensed water rising pipe 7 and water filling rising pipe 9 are arranged, and the upper and lower ends of curl-up film core supports the mouth of pipe at sewage water inlet pipe and water filling rising pipe respectively, between the inwall of the periphery on volume film 4 tops and the shell 5 of corresponding position last sealing-ring 3 is arranged, between water filling rising pipe 9 inwalls of curl-up film core bottom and corresponding position lower seal 8 is arranged.
During work, oil extraction-generated waste water flows to the empty indoor of sealing-ring 3 tops from sewage water inlet pipe 1 through limbers, curl-up film core 2 upper end, rolls up membrane filtration through layer by layer, makes re-injection water through longitudinal and transverse limbers 6 to the water filling rising pipe 9 of below by the water in≤0.2 μ m aperture and uses.Band impurity that can not be by fenestra become condensed water, be blocked in the slit of each rete, dirty gradually, condensed water rising pipe 7 by the below flows out at last, to the total rising pipe of condensed water, and then enter into next stage film precision filtering device and carry out cascade filtration as required, to increase the re-injection water yield.Height condensed water behind the cascade filtration is returned and is received the coarse filtration pond.Meet the demands as the re-injection water yield, also can save cascade filtration, directly the filtering condensed water of chopped-off head is connect the coarse filtration pond.
Be to be connected in parallel between sewage water inlet manifold and the total rising pipe of condensed water, the total rising pipe of water filling when should be noted that practical application, to improve the oil extraction-generated waste water treatment capacity in the unit time with a plurality of film precision filtering devices as above.
The present invention establishes topping-up pump in the sewage water inlet manifold, again film filter is erected and put, utilize the common penetrating ability that improves film of deadweight pressurization of water, also in the water filling water-main, establish topping-up pump, when filtering membrane is blocked, open this topping-up pump, close the topping-up pump in the water filling water inlet manifold, make that water in the total rising pipe of water filling is reverse to return tamper in the flushing membrane.Efficiently solve the easily stifled difficult problem of membrane filtration of oil extraction-generated waste water, accelerated sewage disposal speed, make re-injection water reach particle diameter≤0.5 μ m, bacterial count≤10
3-10
5The level of individual/milliliter satisfies the standard-required that the re-injection water is closed index.
Claims (2)
1, a kind of film precision filtering method of oil extraction-generated waste water is characterized in that, carry out three times conventional oil removings, chemical flocculation sedimentation, coarse filtration operation in early stage earlier after, particle diameter≤5 μ m, bacterial count≤10 for the treatment of impurity
4-10
6Individual/milliliter, just can carry out film precision filtering, this filters the general water treatment device of industry such as adopting bio-pharmaceuticals, has done the improvement of following three aspects:
(1) converted horizontal is vertical;
(2) on the total rising pipe of oil extraction-generated waste water water inlet manifold and water filling topping-up pump is installed all, two-position controller is provided with and makes the two topping-up pumps mechanism of work by turns;
(3) the total rising pipe of condensed water connects in the next stage film precision filtering device, carries out cascade filtration as required, again secondary condensed water rising pipe is connect the coarse filtration pond.
2, film precision filtering method as claimed in claim 1 is characterized in that after operation in early stage such as coarse filtration oil removing filtration, the sand that also can carry out oil absorbent material again filters, the activated carbon filtration operation, particle diameter≤5 μ m, bacterial count≤10 for the treatment of impurity
4-10
6Individual/milliliter, just can carry out film precision filtering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101266179A CN1332889C (en) | 2005-12-02 | 2005-12-02 | Film precision filtering method of oil extracting sewage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101266179A CN1332889C (en) | 2005-12-02 | 2005-12-02 | Film precision filtering method of oil extracting sewage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1792840A true CN1792840A (en) | 2006-06-28 |
| CN1332889C CN1332889C (en) | 2007-08-22 |
Family
ID=36804513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101266179A Expired - Fee Related CN1332889C (en) | 2005-12-02 | 2005-12-02 | Film precision filtering method of oil extracting sewage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1332889C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106630003A (en) * | 2016-11-02 | 2017-05-10 | 深圳市康源环境纳米科技有限公司 | Oily wastewater treatment device and method |
| CN110265840A (en) * | 2014-10-09 | 2019-09-20 | 爱勒米珍有限责任公司 | Component and in lamp seat formed electrical contacts method |
| CN111547682A (en) * | 2020-05-14 | 2020-08-18 | 江西渠成氟化学有限公司 | Defluorination method of fluorine-containing hydrochloric acid |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2364026Y (en) * | 1999-02-10 | 2000-02-16 | 东营福斯特电子有限责任公司 | Middle pressure type filtering tank for treatment of sewage |
| CN2533123Y (en) * | 2002-03-01 | 2003-01-29 | 长春安特涂装技术工程有限公司 | Ultrafiltering and reverse osmosis combined enclosed cleaning recovery device |
| CN1260139C (en) * | 2002-04-17 | 2006-06-21 | 凯能高科技工程（上海）有限公司 | Method for deeper treatment and reuse of oil production waste water in oil field by membrane separation |
| CN1300017C (en) * | 2005-04-14 | 2007-02-14 | 哈尔滨工业大学 | Tech. process for reducing mineralization of extracting oil sewage |
-
2005
- 2005-12-02 CN CNB2005101266179A patent/CN1332889C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110265840A (en) * | 2014-10-09 | 2019-09-20 | 爱勒米珍有限责任公司 | Component and in lamp seat formed electrical contacts method |
| CN110265840B (en) * | 2014-10-09 | 2020-11-03 | 爱勒米珍有限责任公司 | Assembly and method for forming electrical contacts in a lamp base |
| CN106630003A (en) * | 2016-11-02 | 2017-05-10 | 深圳市康源环境纳米科技有限公司 | Oily wastewater treatment device and method |
| CN111547682A (en) * | 2020-05-14 | 2020-08-18 | 江西渠成氟化学有限公司 | Defluorination method of fluorine-containing hydrochloric acid |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1332889C (en) | 2007-08-22 |
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Granted publication date: 20070822 Termination date: 20100104 |