CN108751491A - A kind of high saliferous condensed oil sewage advanced treating integration technique of membrane - Google Patents
A kind of high saliferous condensed oil sewage advanced treating integration technique of membrane Download PDFInfo
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- CN108751491A CN108751491A CN201810548342.5A CN201810548342A CN108751491A CN 108751491 A CN108751491 A CN 108751491A CN 201810548342 A CN201810548342 A CN 201810548342A CN 108751491 A CN108751491 A CN 108751491A
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- membrane
- nanofiltration
- reverse osmosis
- condensed oil
- oil sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/442—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/10—Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Nanotechnology (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The present invention provides a kind of high saliferous condensed oil sewage advanced treating integration technique of membrane; advanced treating is carried out using integration technique of membrane, for high saliferous condensed oil sewage; high slat-containing wastewater passes through micro-filtration, ultrafiltration, level-one nanofiltration, two level nanofiltration, reverse osmosis membrane processing technique successively; good treatment effect can be reached and realize operation steady in a long-term; realize recycling for high-salt wastewater; water resource is saved, environmental protection has good economical, societal benefits.
Description
Technical field
The present invention relates to oil-field thick-oil sewage treatment fields, and in particular to a kind of high saliferous condensed oil sewage advanced treatment and reclamation
Integration technique of membrane.
Background technology
Oil-field thick-oil sewage is the oily wastewater after crude oil dehydration separation generated with oil field produced operation, with me
State's viscous crude field exploitation deepens continuously, and the total amount of condensed oil sewage is also being continuously increased.It is big due to being needed during heavy oil development
The steam of amount, oil field generally use superheated steam boiler and coal-fired fluidized bed boiler, boiler feed water to be adopted using purified oil field
Water outlet, due to boiler feed water it is more demanding to the salinity of influent quality (in superheated steam boiler and coal-fired fluidized bed boiler into
Water total dissolved solidss TDS<3000mg/L), in order to ensure water quality, the high temperature brackish water of 10%-20% can be discharged in operational process,
Salinity is in 4000-50000mg/L.Its water-quality constituents includes mainly the dirts such as oils, organic matter, colloid, silica, suspended matter
Contaminate object.Currently, condensed oil sewage processing generally uses traditional " oil removal-air supporting-coagulant precipitation-filtering-softening " treatment process
Reuse is to boiler.Up to now, it is also rarely seen by application of membrane in the case of oil field high-salt wastewater reuse, membrane separation technique is
It is widely used in the engineerings such as external sea water desalination, industrial effluent reusing, it is equal in terms of advanced treatment and reclamation to dense oil extraction wastewater
There is wide popularization and application market, the utilization of high-concentration waste water recycling treatment, zero-emission may be implemented, reach energy-saving and environmental protection
Purpose.Therefore, by the membrane integrating techniques such as nanofiltration, reverse osmosis be applied to condensed oil sewage advanced treating technical process research with
Using having great importance.
Invention content
In view of the problems of the existing technology, the present invention is the technical solution for solving problems of the prior art and using
It is as follows：
A kind of high saliferous condensed oil sewage advanced treating integration technique of membrane, which is characterized in that include the following steps：
Step 1, by high saliferous condensed oil sewage by coagulant precipitation filtering pretreatment after, be sent into micro-filtration membrane treatment appts carry out
Processing；
Step 1 production water is sent into next stage ultrafiltration membrane treatment device by step 2, while micro-filtration concentrate is back to pretreatment
Inlet pipeline, ultra-filtration process can further remove suspended matter in waste water, most of colloid (clay, colloidal silicon etc.) and divide greatly
Sub- organic matter etc.；
The production water of step 2 is sent into first order nanofiltration membrane treatment device, while liquid is concentrated by ultrafiltration and is back to higher level by step 3
At micro-filtration water inlet；First order nanofiltration production water subsequently enters second level nanofiltration membrane treatment device, and first order nanofiltration concentrate is back to
Ultrafiltration inlet pipeline can significantly reduce salinity, the hardness of high saliferous condensed oil sewage through two-stage nanofiltration processing, except silicon effect is good
It is good；
Nanofiltration production water in the second level is sent into reverse osmosis membrane processing device by step 4, due to being handled through prime nanofiltration twice, is given up
Salinity water substantially reduces, and corresponding reverse osmosis operating pressure and fouling membrane can also greatly reduce, and be conducive to the length of reverse osmosis unit
Phase stable operation, second level nanofiltration concentrate and reverse osmosis concentrated liquid are back to first order nanofiltration inlet pipeline, reverse osmosis produced
Water collects reuse.
Micro-filtration processing procedure carries out under the conditions of low voltage difference in the step 1, can remove decontaminated water in size 10 μm-
The suspended matter of 100nm, bacterium, large scale colloid and some finely ground particles, realize secondary filter.
First order nanofiltration membrane treatment device and second level nanofiltration membrane treatment device select Dow respectively in the step 3
The DK NF membranes of NF90 NF membranes and U.S. GE.
The membrane module that reverse osmosis membrane processing device uses in the step 4 is U.S.'s Coriolis XR reverse osmosis membranes or U.S. GE
SE reverse osmosis membranes.
Hydraulic pipeline is equipped with the structures such as pressure gauge, flowmeter, valve and water pump between water treatment facilities at different levels.
The invention has the advantages that：
Present invention synthesis uses micro-filtration, ultrafiltration, nanofiltration, the high saline sewage of reverse osmosis membrane processing process, Neng Gouda
It to good treatment effect and realizes operation steady in a long-term, realizes the reuse of high-salt wastewater, save water resource, environmental protection, tool
There are good economical, societal benefits；Using two-stage nanofiltration treatment process, it can reach good to the high saline sewage of oil gas field
Desalination is except except silicon effect, high saliferous water inlet handles again through second level nanofiltration after first order nanofiltration salinity suitably reduces, can make firmly
The desalting effect of nanofiltration maximizes, and nanofiltration is produced water salt content and significantly reduced, and reverse osmosis operating pressure can be effectively reduced, and saves
Energy consumption；Meanwhile two-stage nanofiltration can also ensure stable hard-off rate within the scope of greater hardness；It can farthest remove
Dissolved silicon in sewage, this is also beneficial to reverse osmosis operation steady in a long-term, and decelerating membrane pollution ensures good recycle-water water
Matter.
Description of the drawings
Fig. 1 is the process flow chart of patent of the present invention；
Wherein：1- pretreatment units, 2- micro-filtration membrane treatment appts, 3- ultrafiltration membrane treatment devices, 4- level-one nanofiltration membrane treatments
Device, 5- two level nanofiltration membrane treatment devices, 6- reverse osmosis membrane processing devices, 7- pressure gauges, 8- flowmeters, 9- valves, 10- water
Pump.
Specific implementation mode
Below with reference to the embodiments and with reference to the accompanying drawing the technical solutions of the present invention will be further described, such as Fig. 1
Shown, a kind of high saliferous condensed oil sewage advanced treating integration technique of membrane flow is that step 1 will pass through the pre- place of coagulant precipitation filtering
It manages device 1 treated high saliferous condensed oil sewage and be sent into micro-filtration membrane treatment appts 2 and carry out secondary filter processing, this step can remove
The colloid of suspended matter, bacterium and large scale in water；
Step 2 handles step 1 production water feeding next stage ultrafiltration membrane treatment device 3, while in order to save water and energy,
So that the economy of resources of package unit is maximized, realizes that zero-emission, micro-filtration concentrate are back to pretreatment inlet pipeline, ultrafiltration membrane energy
Suspended matter, most of colloid (clay, colloidal silicon etc.) and larger molecular organics in enough further retention sewage, it is ensured that good
Good nanofiltration influent quality；
Step 2 ultrafiltration concentration liquid is back to higher level's micro-filtration inlet pipeline by step 3, and ultrafiltration production water is sequentially sent to level-one and receives
Filter membrane processing unit 4 and two level nanofiltration membrane treatment device 5 are handled, and level-one nanofiltration concentrate is back to prime ultrafiltration water inlet pipe
The advantages of road, two level nanofiltration concentrate is back to level-one nanofiltration inlet pipeline, uses two-stage nanofiltration technique for：One, it is made pottery with the U.S.
For family name NF90 NF membranes are to the removing of monovalent salt, when showing that NaCl concentration is 10000mg/L through nanofiltration experiment result of study,
Salt rejection rate is 60% or more；When NaCl concentration rises to 20000mg/L, NF90 salt rejection rates are 30% or so, therefore, using two-stage
When nanofiltration technique, high saliferous water inlet is handled through first order nanofiltration, and salinity is handled through second level nanofiltration again after having reduction to a certain degree,
The desalting effect of nanofiltration can be made to significantly improve, nanofiltration is produced water salt content (i.e. feed water by reverse osmosis salinity) and significantly reduced, this can
Reverse osmosis operating pressure is effectively reduced, energy consumption is saved；Meanwhile it being also beneficial to reverse osmosis operation steady in a long-term, slow down film dirt
Dye, ensures good effluent quality；Two, the hardness in condensed oil sewage can be significantly reduced：Nanofiltration experiment the result shows that, wider
Salinity range in, NF membrane to 2-2 types inorganic salts (such as：MgSO4) and 2-1 types inorganic salts (such as：CaCl2) rejection
It can be maintained at higher level, by taking the DK NF membranes of U.S. GE as an example, work as MgSO4When concentration increases to 1500mg/L by 500mg/L,
DK NF membranes become 99.1% to the removal efficiency of hardness from 99.3%, work as CaCl2When concentration increases to 4000mg/L by 2000mg/L,
DK NF membranes are down to 85.5% to the removal efficiency of hardness by 88.3%, therefore, can be in sewage using two-stage nanofiltration technique
Hardness reaches better removal effect, and when the hardness in sewage fluctuates in larger concentration range, NF goes out the water hardness and also can
It is kept low.
Step 4 is handled last be sent into reverse osmosis membrane processing device 6 of two level nanofiltration water outlet, reverse osmosis concentrated liquid
It is back to first order nanofiltration inlet pipeline, the production water of reverse osmosis membrane processing device 6 collects reuse.
First order nanofiltration membrane treatment device and second level nanofiltration membrane treatment device select Dow NF90 respectively in step 3
The DK NF membranes of NF membrane and U.S. GE, the commercial NF membrane of 7 kinds of inventor couple have carried out the screening of the performance under high salt concentration, as a result
The membrane separating property of display Dow NF90 NF membranes and the DK NF membranes of U.S. GE under the conditions of high salinity is optimal, processing material
The MgSO of a concentration of 1500mg/L of liquid4When (2-2 types) solution, the salt rejection rate of NF90 NF membranes is up to the desalination of 99.2%, DK films
Rate is 98.9%, the CaCl that processing feed concentration is 4000mg/L2When (2-1 types) solution, the salt rejection rate of NF90 NF membranes is reachable
97.2%, GE DK films are only second to NF90, salt rejection rate 85.5%, the NaCl (1-1 types) that processing feed concentration is 10000mg/L
When solution, NF90 remains to keep 67% removal rate to monovalent ion.
The membrane module that reverse osmosis membrane processing device uses in step 4 is anti-for the SE of U.S.'s Coriolis XR reverse osmosis membranes or U.S. GE
Permeable membrane, 8 kinds of reverse osmosis membranes of inventor couple have carried out the membrane separating property screening experiment under the conditions of high salt concentration, experimental result table
Bright (the C under middle low salt concnNaCl≤ 10000mg/L), SE film salt rejection rates are up to 97% or more；XR membrane fluxs are maximum, with high salt
Desalting effect is stablized under concentration, and the membrane separating property of SE and XR are optimal, when processing feed concentration is the NaCl solution of 20000mg/L
When, the salt rejection rates of SE films is that the salt rejection rate of 88.9%, XR films is 85.3%.
Further include that some necessary instrument (such as pressure gauge 7, flowmeter 8), valve 9 and water pumps 10 etc. are attached on hydraulic pipeline
Belong to facility.
Certain factory's condensed oil sewage treating stations settling tank water outlet is handled by coagulant precipitation sand filtration, handling result is as shown in table 1：
The Cl of water inlet-A concentration of 19301mg/L, Ca2+20 or more a concentration of 2000mg/L, SDI index reached, settling tank water outlet is by micro-
After filter-ultrafiltration-level-one nanofiltration-two level nanofiltration-reverse-osmosis treated, the thanide cations such as sodium, calcium, magnesium, iron and sulfate radical in water
The removal rates such as polyiodide ion reach 95%-100%, and two level nanofiltration is to monovalent cation Na+, anion Cl-Rejection, two
The rejection of silica is up to 85% or more, and the water outlet of reverse osmosis membrane can reach TDS<3000mg/L, hardness<200mg/L,SiO2
Content<50mg/L.
1 micro-filtration of table-ultrafiltration-nanofiltration-reverse osmosis process handles dense oil extraction wastewater
Protection scope of the present invention is not limited to the above embodiments, it is clear that those skilled in the art can be to this hair
It is bright to carry out various changes and deformation without departing from scope and spirit of the present invention.If these changes and deformation belong to power of the present invention
In the range of profit requirement and its equivalent technologies, then including the intent of the present invention also includes these changes and deforms.
Claims (4)
1. a kind of high saliferous condensed oil sewage advanced treating integration technique of membrane, which is characterized in that include the following steps：
Step 1, by high saliferous condensed oil sewage by coagulant precipitation filtering pretreatment after, be sent into micro-filtration membrane treatment appts at
Reason；
Step 1 production water is sent into next stage ultrafiltration membrane treatment device by step 2, while micro-filtration concentrate is back to pretreatment water inlet
Pipeline；
The production water of step 2 is sent into first order nanofiltration membrane treatment device, while liquid is concentrated by ultrafiltration and is back to higher level's micro-filtration by step 3
At water inlet；First order nanofiltration production water subsequently enters second level nanofiltration membrane treatment device, and first order nanofiltration concentrate is back to ultrafiltration
Inlet pipeline；
Nanofiltration production water in the second level is sent into reverse osmosis membrane processing device, second level nanofiltration concentrate and reverse osmosis concentrated liquid by step 4
It is back to first order nanofiltration inlet pipeline, reverse osmosis produced water collects reuse.
2. a kind of high saliferous condensed oil sewage advanced treating integration technique of membrane as described in claim 1, it is characterised in that：The step
Micro-filtration processing procedure carries out under the conditions of low voltage difference in rapid 1.
3. a kind of high saliferous condensed oil sewage advanced treating integration technique of membrane as described in claim 1, it is characterised in that：The step
Membrane module in rapid 3 in first order nanofiltration membrane treatment device and second level nanofiltration membrane treatment device selects Dow NF90 respectively
The DK NF membranes of NF membrane and U.S. GE.
4. a kind of high saliferous condensed oil sewage advanced treating integration technique of membrane as described in claim 1, it is characterised in that：The step
The membrane module that reverse osmosis membrane processing device uses in rapid 4 is U.S.'s Coriolis XR reverse osmosis membranes or the SE reverse osmosis membrane of U.S. GE.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111547908A (en) * | 2020-05-20 | 2020-08-18 | 中国石油工程建设有限公司 | Method and device for recycling, treating and regenerating saline produced water of super-heavy oil |
| CN111875090A (en) * | 2020-06-30 | 2020-11-03 | 成都泓润科技有限公司 | Waste water treatment method |
| CN112010437A (en) * | 2019-05-29 | 2020-12-01 | 西安得在电力科技有限公司 | Method and device for treating power plant desulfurization wastewater by using nano membrane and application |
| CN112679020A (en) * | 2020-12-25 | 2021-04-20 | 成都硕特环保科技有限公司 | Low-cost shale gas fracturing flowback fluid treatment system and treatment method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130056417A1 (en) * | 2011-09-02 | 2013-03-07 | Saline Water Desalination Research Institute | Removal of boron from saline water using alkalized nf membrane pretreatment |
| CN104276702A (en) * | 2014-10-29 | 2015-01-14 | 成都恩承油气有限公司 | Desalting treatment method for wastewater of oil and gas fields |
| CN107481780A (en) * | 2017-07-06 | 2017-12-15 | 中核四0四有限公司 | A kind of membrane treatment appts for uranium-bearing liquid waste processing |
-
2018
- 2018-05-31 CN CN201810548342.5A patent/CN108751491A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130056417A1 (en) * | 2011-09-02 | 2013-03-07 | Saline Water Desalination Research Institute | Removal of boron from saline water using alkalized nf membrane pretreatment |
| CN104276702A (en) * | 2014-10-29 | 2015-01-14 | 成都恩承油气有限公司 | Desalting treatment method for wastewater of oil and gas fields |
| CN107481780A (en) * | 2017-07-06 | 2017-12-15 | 中核四0四有限公司 | A kind of membrane treatment appts for uranium-bearing liquid waste processing |
Non-Patent Citations (3)
| Title |
|---|
| 朱长乐: "《膜科学技术》", 30 June 2004, 高等教育出版社 * |
| 李培元等: "《火力发电厂水处理剂水质控制》", 30 November 2011, 中国电力出版社 * |
| 李孟等: "《给水处理原理》", 31 December 2013, 武汉理工大学出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112010437A (en) * | 2019-05-29 | 2020-12-01 | 西安得在电力科技有限公司 | Method and device for treating power plant desulfurization wastewater by using nano membrane and application |
| CN111547908A (en) * | 2020-05-20 | 2020-08-18 | 中国石油工程建设有限公司 | Method and device for recycling, treating and regenerating saline produced water of super-heavy oil |
| CN111875090A (en) * | 2020-06-30 | 2020-11-03 | 成都泓润科技有限公司 | Waste water treatment method |
| CN112679020A (en) * | 2020-12-25 | 2021-04-20 | 成都硕特环保科技有限公司 | Low-cost shale gas fracturing flowback fluid treatment system and treatment method |
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