CN106975362A - A kind of forward osmosis membrane component, oil extraction waste water treatment device and the oil extraction waste water advanced treatment and reclamation method based on positive permeability and separation - Google Patents
A kind of forward osmosis membrane component, oil extraction waste water treatment device and the oil extraction waste water advanced treatment and reclamation method based on positive permeability and separation Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/002—Forward osmosis or direct osmosis
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/445—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by forward osmosis
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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
- 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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Abstract
The invention provides a kind of forward osmosis membrane component, oil extraction waste water treatment device and the oil extraction waste water advanced treatment and reclamation method based on positive permeability and separation, its oil extraction waste water advanced treatment and reclamation method comprises the following steps：Positive process of osmosis, oil extraction waste water cyclic process, draw liquid cyclic process and draw liquid and utilize process, positive process of osmosis does not need additionaling power by driving force of osmotic pressure, using the oil extraction waste water by pretreatment as raw water, to draw liquid powder as drawing liquid, water resource is reclaimed by positive process of osmosis, liquid is drawn in dilution, the preparation for oil displacement agent.The present invention will draw liquid and be prepared for oil displacement agent, save a large amount of fresh water prepared needed for oil displacement agents, also make to draw liquid and effectively be recycled after cycling；In addition, the invention provides a kind of energy-conservation, low stain tendency and the stronger positive permeability and separation method oil extraction waste water advanced treatment recycling technique of sustainability.
Description
Technical field
The invention belongs to technical field of membrane separation, and in particular to a kind of forward osmosis membrane component, oil extraction waste water treatment device and
Oil extraction waste water advanced treatment and reclamation method based on positive permeability and separation.
Background technology
With the fast development of China's industry, the demand of oil is substantially increased, with primary oil recovery and secondary oil recovery
Carry out, China there are multiple oil fields to subsequently enter the rear stage in oil development.In order to ensure certain production efficiency, gather to drive and recover the oil
The tertiary oil recovery technology such as technology and ternary composite driving is widely used.And tertiary oil recovery wastewater has oil content big, contain
Polymer is more, more containing suspension, the features such as containing certain salinity, and it, which is handled, can cause bigger difficulty.
The problem of in order to solve poly- drive oil extraction waste water and alkaline surfactant polymer flooding oil-field wastewater processing and reuse, conventional art has three
Major class：Physical method, chemical method and biological method.Physical method is such as adsorbed, air supporting can be completed to oil emulsion in water, poly-
The removal of the macromoleculars such as compound, it is impossible to reach the standard of re-injection and reuse.Chemical method such as coagulating sedimentation, advanced oxidation, electrification
Method etc. is on the premise of it reaches water standard, and often investment and operating cost are higher.Biological method is organic to small molecule
Thing treatment effect is preferably, relatively low to inorganic matter, mineral matter and macromolecule organic disposal ability.
Because oil extraction waste water is difficult to be utilized effectively, configuration oil displacement agent consumes the water of a large amount of cleanings.In order to from oil recovery
Water resource is reclaimed in waste water, in recent years, membrane technology is gradually applied in oil extraction waste water processing.For oil extraction waste water processing
Membrane technology has ultrafiltration, nanofiltration, counter-infiltration and electrodialysis etc..Water quality after membrane technology processing can preferably meet reuse and re-injection
Requirement, but traditional membrane process needs certain driving force, such as voltage, when this causes conventional film technical finesse oil extraction waste water
Substantial amounts of electric energy can be consumed.Further, since oil extraction waste water contains the pollutants such as substantial amounts of polymer, oil, mineral matter, microorganism,
Film can be made to form more serious organic and inorganic, microbial film pollutant, so as to influence the service life of film.
Therefore one kind is needed more to save, low stain tendency, the stronger application of membrane of sustainability is in from oil extraction waste water
Middle recovery water resource.
However, when positive infiltration technology is used for oil extraction waste water processing, subject matter will be turned into by drawing the regeneration of liquid.Positive infiltration system
System needs osmotic pressure to draw liquid higher than oil extraction waste water osmotic pressure, and this requirement draws liquid and possesses certain concentration to ensure infiltration
Pressure, conventional dip liquid has volatility to draw liquid and non-volatile draw liquid.Volatility draws liquid such as ammonium bicarbonate soln, Ke Yitong
Thermal regeneration is crossed, if applied to oil extraction waste water processing, processing cost certainly will be greatly improved.It is non-volatile to draw liquid such as sodium chloride
And magnesium chloride, its regenerative process complexity, it is also difficult to effectively recycled, can also reduce the viscosity of oil displacement agent, and in the displacement of reservoir oil
A certain amount of alkali lye (such as magnesium ion) is commonly incorporated into agent, precipitation can be formed it into.Selection suitably draws liquid, it is ensured that draw liquid easy
It is a technological difficulties for needing to solve to regenerate or be effectively utilized.
The content of the invention
The present invention is in view of the shortcomings of the prior art, it is therefore an objective to provide a kind of forward osmosis membrane component, oil extraction waste water treatment device
And the oil extraction waste water advanced treatment and reclamation method based on positive permeability and separation.
To reach above-mentioned purpose, solution of the invention is：
A kind of forward osmosis membrane component, it includes oil extraction waste water runner and draws liquid runner, oil extraction waste water runner and draws liquid
Runner is spaced, oil extraction waste water runner and draws liquid runner and is separated by forward osmosis membrane.
Wherein, water inlet is disposed in oil extraction waste water runner, and delivery port is arranged below；Draw in liquid runner and intake
Mouth is arranged below, and delivery port is disposed over.
Oil extraction waste water runner and draw deflector is equipped with liquid runner, forward osmosis membrane is detachable.
Preferably, the length of oil extraction waste water runner is 400-1500mm, and width is 200-1200mm, and thickness is 10-50mm.
Preferably, the length for drawing liquid runner is 400-1500mm, and width is 200-1200mm, and thickness is 10-50mm.
Preferably, oil extraction waste water runner and draw liquid runner and be respectively equipped with 2-10 pairs.
Preferably, the forward osmosis membrane in forward osmosis membrane component includes active layer and supporting layer；Wherein, the material of active layer is
Polyamide, the material of supporting layer is selected from polyether sulfone or polyacrylonitrile.
The thickness of forward osmosis membrane is 80-150 μm, and forward osmosis membrane is shaped as plate and frame.
A kind of oil extraction waste water treatment device, it includes oil extraction waste water pond, oil extraction waste water tank, concentrated water tank, the first pump, second
Pump, the 3rd pump, the 4th pump, the 5th pump, the 6th pump, the first valve, the second valve, the 3rd valve, the 4th valve, the 5th valve,
6th valve, first flowmeter, second flowmeter, forward osmosis membrane component described above, powder throwing device, draw flow container, it is dilute
Release and draw flow container and oil displacement agent tank.
Wherein, oil extraction waste water pond is connected by the first pump, the first valve with oil extraction waste water tank；Oil extraction waste water tank passes through second
Pump, the second valve are connected with concentrated water tank；Oil extraction waste water tank passes through the 3rd pump, the 3rd valve, first flowmeter and oil extraction waste water stream
The water inlet in road is connected, and the delivery port of oil extraction waste water runner is connected by pipeline with oil extraction waste water tank；Powder throwing device passes through
Pipeline is connected with flow container is drawn；Draw flow container and pass through the 4th pump, the 4th valve, second flowmeter and the water inlet for drawing liquid runner
It is connected, the delivery port for drawing liquid runner is connected by pipeline with flow container is drawn；Draw flow container and pass through the 5th pump, the 5th valve and dilute
Release draw flow container be connected；Dilution is drawn flow container and is connected by the 6th pump, the 6th valve with oil displacement agent tank.
A kind of oil extraction waste water advanced treatment and reclamation method based on positive permeability and separation, it comprises the following steps：
(1), positive process of osmosis：Moisture in oil extraction waste water is entered by permeable pressure head out of oil extraction waste water runner draws liquid
In runner；
(2), oil extraction waste water cyclic process：Pre- oil extraction waste water in oil extraction waste water pond, which is flowed into, passes through the first pump, the first valve
In the oil extraction waste water tank being connected with oil extraction waste water pond, oil extraction waste water in oil extraction waste water tank flow into by the 3rd pump, the 3rd valve,
In the water inlet for the oil extraction waste water runner that first flowmeter is connected with oil extraction waste water tank, concentrated oil extraction waste water is flowed into by pipe
In the oil extraction waste water tank that road is connected with the delivery port of oil extraction waste water runner, the oil extraction waste water after concentration is filled in agitating device and temperature control
In the presence of putting, the oil extraction waste water runner that a part is flowed into forward osmosis membrane component carries out circular response, and remainder flows into logical
Cross in the concentrated water tank that the second pump, the second valve are connected with oil extraction waste water tank；
(3) liquid cyclic process, is drawn：Liquid powder inflow of drawing in powder throwing device adds dress by pipeline and powder
Put it is connected draw in flow container, the liquid that draws drawn in flow container is flowed into by the 4th pump, the 4th valve, second flowmeter and drawing
What flow container was connected is drawn in the water inlet of liquid runner, and the water outlet that liquid flowed into by pipeline and drawn liquid runner is drawn after dilution
What mouth was connected is drawn in flow container, and liquid is drawn in the presence of agitating device and temperature control device after dilution, and a part, which is flowed into, just oozes
Drawing in permeable membrane component carries out circular response in liquid runner, remainder flows into by the 5th pump, the 5th valve and draws liquid
The connected dilution of tank is drawn in flow container, and the liquid inflow of drawing that dilution is drawn in flow container is drawn by the 6th pump, the 6th valve and dilution
Take in the connected oil displacement agent tank of flow container；
(4), draw liquid and utilize process：The liquid that draws of dilution is flowed into oil displacement agent tank and used as oil displacement agent.
Preferably, in step (1), the water flux of oil extraction waste water is 2-40LMH.
Preferably, in step (2), the oil content of oil extraction waste water is in more than 100mg/L, and osmotic pressure is 30-150mOsm/
KgH2O, salinity is 500-5000mg/L, and temperature is 20-50 DEG C, and pH value is 7-11, and the rotating speed of stirring is 60-80r/min, is adopted
The forward osmosis membrane surface current speed of oily waste water runner side is 5-20cm/s.
Preferably, oil extraction waste water contains one or more of first polymer or first surface activating agent；Wherein, first gathers
Compound is polyacrylamide, and first surface activating agent is sodium alkyl benzene sulfonate or petroleum sodium sulfonate.
Preferably, the concentration of first polymer is in more than 200mg/L, the concentration of first surface activating agent 300mg/L with
On.
Preferably, in step (3), the forward osmosis membrane surface current speed for drawing liquid runner side is 5-15cm/s, turn of stirring
Speed is 60-80r/min；The concentration for drawing liquid is 30-60g/L, and osmotic pressure is in 500mOsm/kg H2More than O, draws the molecule of liquid
Measure as 6,000,000-1,500 ten thousand.
Preferably, the concentration for drawing liquid of dilution is 5-10g/L.
Preferably, in step (3), the one kind of liquid powder by second polymer, second surface activating agent and alkali lye is drawn
Composition described above；Wherein, second polymer is polyacrylamide, and second surface activating agent is selected from detergent alkylate naphthenic acid sodium or wooden
Plain sodium sulfonate, alkali lye is selected from sodium hydroxide or potassium hydroxide.
Preferably, the concentration of second polymer is 1-70g/L, and the concentration of second surface activating agent is 5-500g/L, alkali lye
PH value be 10-11.
Due to using such scheme, the beneficial effects of the invention are as follows：
There is the oil extraction waste water advanced treatment recycling technique of the present invention energy-conservation, fouling membrane to be inclined to small, pollutant easy cleaning, draw
Take the features such as liquid is recycling.
In a word, the present invention will draw liquid and be prepared for oil displacement agent, save a large amount of fresh water prepared needed for oil displacement agent, also make
Liquid is drawn effectively to be recycled after cycling；In addition, the invention provides one kind energy-conservation, low stain tendency and sustainability
Stronger positive permeability and separation method oil extraction waste water advanced treatment recycling technique.
Brief description of the drawings
Fig. 1 is oil extraction waste water advanced treatment recycling technique schematic diagram of the invention.
Fig. 2 is the structural representation of the forward osmosis membrane component of the present invention.
Fig. 3 is the sectional view of the parallel water (flow) direction of single runner of the present invention.
Reference：
Forward osmosis membrane component 1, oil extraction waste water pond 2, oil extraction waste water tank 3, concentrated water tank 4, powder throwing device 5, draw flow container
6th, dilution draw flow container 7, oil displacement agent tank 8, the 3rd pump 9, temperature control device 10, second flowmeter 11, the 3rd valve 12, pipeline 13,
Water inlet 14, delivery port 15, floss hole 16, forward osmosis membrane 17, oil extraction waste water runner 18, draw liquid runner 19, agitating device 20,
Deflector 21, the first pump 22, the first valve 23, first flowmeter 24, the second valve 25, the second pump 26, the 6th valve the 27, the 6th
Pump 28, the 5th valve 29, the 5th pump 30, the 4th valve 31 and the 4th pump 32.
Embodiment
The invention provides a kind of forward osmosis membrane component, oil extraction waste water treatment device and the oil recovery based on positive permeability and separation is useless
Water depth treatment for reuse method.
<Forward osmosis membrane component>
A kind of forward osmosis membrane component, as shown in Figure 1 to Figure 3, it includes oil extraction waste water runner 18 and draws liquid runner 19, adopts
Oily waste water runner 18 and to draw liquid runner 19 spaced, oil extraction waste water runner 18 and draw liquid runner 19 by forward osmosis membrane 17 every
Open.
Wherein, water inlet 14 is disposed in oil extraction waste water runner 18, and delivery port 15 is arranged below；Draw liquid runner
Water inlet 14 is arranged below in 19, and delivery port 15 is disposed over.
Oil extraction waste water runner 18 and draw deflector 21 is equipped with liquid runner 19, in order to which it is in " S " type to make liquid
Flowing, so as to avoid short stream from occurring.
Forward osmosis membrane 17 is detachable, it is therefore an objective to when cleaning forward osmosis membrane 17 so that its conduit along in component walls is upward
Rise, so that convenient cleaning and replacing.
The length of oil extraction waste water runner 18 can be 400-1500mm, preferably 500mm；Width can be 200-
1200mm, preferably 500mm；Thickness can be 10-50mm, preferably 10mm.
The length for drawing liquid runner 19 can be 400-1500mm, preferably 500mm；Width can be 200-1200mm,
Preferably 500mm；Thickness can be 10-50mm, preferably 10mm.
Oil extraction waste water runner 18 is respectively equipped with 2-10 pairs with liquid runner 19 is drawn, and the surface of oil extraction waste water runner flows to and drawn
The surface of liquid runner is taken to flow to conversely.
Forward osmosis membrane 17 in forward osmosis membrane component 1 includes active layer and supporting layer；Wherein, the material of active layer is polyamides
Amine, the material of supporting layer is selected from polyether sulfone or polyacrylonitrile.
The thickness of forward osmosis membrane 17 can be 80-150 μm, preferably 80 μm；Forward osmosis membrane 17 is shaped as plate and frame.
Forward osmosis membrane 17 is spontaneously oozed as a kind of pellicle, the water of its both sides from the side that infiltration is forced down by permeable membrane
Penetrate into the high side of osmotic pressure.The driving force of positive process of osmosis is the osmotic pressure of solution, and process of osmosis need not additional others
Driving force.This causes the relatively conventional membrane process of positive osmosis system more to save.The interception capacity of forward osmosis membrane 17 is very strong, to polymerization
The rejection of thing, coagulant and surfactant tends to 100%, and the rejection to salt is up to 99.6%, and this just to penetrate
Cheng Huishou water quality is at a relatively high.Additional driving force is not needed additionally, due to positive process of osmosis, its fouling membrane formed layer is more loose,
Pollution tendency is small, and the influence polluted to flux is relatively low, and the fouling membrane of formation is readily cleaned.
Forward osmosis membrane 17 can the business selected from laminated film (TFC films), bionical protein film (AQP films) or the production of HTI companies
Industry forward osmosis membrane, wherein, the supporting layer of TFC films is PAN, and active layer is polyamide.
The cleaning way of forward osmosis membrane component 1 is mainly physical cleaning, and auxiliary is used as using Chemical cleaning.
The cleaning process of forward osmosis membrane component 1 is：During cleaning, valve is opened, the liquid in forward osmosis membrane component 1 is passed through
Floss hole 16 is drained, and by forward osmosis membrane 17 along rise in conduit is risen, so as to enter water-filling punching cleaning, the cleaning frequency is 2-6h, often
Once chemistry auxiliary cleaning is carried out every 12-24h；Physical cleaning flux can recover 92-97%, and Chemical cleaning flux can recover 98-
100%.
Wherein, during physical cleaning, cleaning agent is mainly water, and surface velocity is 5-50cm/s；During chemistry auxiliary cleaning, increase
The matting of citric acid solution and sodium hydroxide, the pH value of citric acid solution is 2.5-3, and the pH value of sodium hydroxide solution is
10‐11。
<Oil extraction waste water treatment device>
A kind of oil extraction waste water treatment device, it include oil extraction waste water pond 2, oil extraction waste water tank 3, concentrated water tank 4, the first pump 22,
Second pump 26, the 3rd pump 9, the 4th pump 32, the 5th pump 30, the 6th pump 28, the first valve 23, the second valve 25, the 3rd valve 12,
4th valve 31, the 5th valve 29, the 6th valve 27, first flowmeter 24, second flowmeter 11, forward osmosis membrane group described above
Part 1, powder throwing device 5, draw flow container 6, dilution draw flow container 7 and oil displacement agent tank 8.
Wherein, oil extraction waste water pond 2 is connected by the first pump 22, the first valve 23 with oil extraction waste water tank 3；Oil extraction waste water tank 3
It is connected by the second pump 26, the second valve 25 with concentrated water tank 4；Oil extraction waste water tank 3 passes through the 3rd pump 9, the 3rd valve 12, first-class
Gauge 24 is connected with the water inlet of oil extraction waste water runner, and the delivery port of oil extraction waste water runner passes through pipeline 13 and oil extraction waste water tank 3
It is connected；Powder throwing device 5 is connected by pipeline 13 with flow container 6 is drawn；Draw flow container 6 by the 4th pump 32, the 4th valve 31,
Second flowmeter 11 is connected with the water inlet for drawing liquid runner, draws the delivery port of liquid runner by pipeline 13 and draws flow container 6
It is connected；Draw flow container 6 flow container 7 is drawn with dilution by the 5th pump 30, the 5th valve 29 and be connected；Dilution draws flow container 7 by the
Six pumps 28, the 6th valve 27 are connected with oil displacement agent tank 8.
<Oil extraction waste water advanced treatment and reclamation method based on positive permeability and separation>
A kind of oil extraction waste water advanced treatment and reclamation method based on positive permeability and separation, it comprises the following steps：
(1), positive process of osmosis：Moisture in oil extraction waste water is entered by permeable pressure head out of oil extraction waste water runner 18 to be drawn
In liquid runner 19；
(2), oil extraction waste water cyclic process：Pre- oil extraction waste water in oil extraction waste water pond 2, which is flowed into, passes through the first pump 22, the first valve
In the oil extraction waste water tanks 3 that are connected with oil extraction waste water pond 2 of door 25, the oil extraction waste water in oil extraction waste water tank 3 flow into pass through the 3rd pump 9,
In the water inlet for the oil extraction waste water runner that 3rd valve 12, first flowmeter 24 are connected with oil extraction waste water tank 3, concentrated oil recovery
Waste water is flowed into the oil extraction waste water tank 3 being connected by pipeline 13 with the delivery port of oil extraction waste water runner, the oil extraction waste water after concentration
In the presence of agitating device 20 and temperature control device 10, the oil extraction waste water runner 18 that a part is flowed into forward osmosis membrane component 1 enters
Row circular response, remainder is flowed into the concentrated water tank 4 being connected by the second pump 26, the second valve 25 with oil extraction waste water tank 3；
(3) liquid cyclic process, is drawn：The liquid powder that draws in powder throwing device 5 is flowed into by pipeline 13 and powder throwing
What feeder apparatus 5 was connected is drawn in flow container 6, and the liquid that draws drawn in flow container 6 is flowed into by the 4th pump 32, the 4th valve 31, second
Flowmeter 11 with draw in the water inlet for drawing liquid runner that flow container 6 is connected, after dilution draw liquid flow into pass through pipeline 13
What is be connected with the delivery port for drawing liquid runner is drawn in flow container 6, and liquid is drawn in agitating device 20 and temperature control device 10 after dilution
In the presence of, a part flows into drawing in forward osmosis membrane component 1 and circular response is carried out in liquid runner 19, and remainder flows into logical
Cross the 5th pump 30, the 5th valve 29 and drawn with the dilution that flow container 6 is connected is drawn in flow container 7, dilution, which is drawn in flow container 7, draws liquid
Flow into and drawn by the 6th pump 28, the 6th valve 27 with dilution in the oil displacement agent tank 8 that flow container 7 is connected；
(4), draw liquid and utilize process：The liquid that draws of dilution is flowed into oil displacement agent tank 8 and used as oil displacement agent.
Wherein, in step (1), the water flux of oil extraction waste water can be 2-40LMH, preferably 20LMH.
In step (2), the oil content of oil extraction waste water is in more than 100mg/L, and osmotic pressure can be 30-150mOsm/
KgH2O, preferably 100mOsm/kgH2O；Salinity can be 500-5000mg/L, preferably 1000mg/L；Temperature can be
20-50 DEG C, preferably 30 DEG C；PH value can be 7-11, preferably 8.0；The rotating speed of stirring can be 60-80r/min, be preferably
60r/min；The forward osmosis membrane surface current speed of oil extraction waste water runner side can be 5-20cm/s, preferably 10cm/s, its flow velocity
Size is determined according to the property of oil extraction waste water；Its temperature control device is used for that water temperature to be too low, control water when water temperature change greatly
Temperature.
Oil extraction waste water contains one or more of first polymer or first surface activating agent；Wherein, first polymer is
Polyacrylamide, first surface activating agent is sodium alkyl benzene sulfonate or petroleum sodium sulfonate；The concentration of first polymer is in 200mg/L
More than, the concentration of first surface activating agent is in more than 300mg/L.
In step (3), the forward osmosis membrane surface current speed for drawing liquid runner side can be 5-15cm/s, preferably 7.5cm/
S, the size of its flow velocity is determined according to the property for drawing liquid；The rotating speed of stirring can be 60-80r/min, preferably 60r/
min；Its temperature control device is used for that water temperature to be too low, control water temperature when water temperature change greatly；The concentration for drawing liquid can be 30-
60g/L, preferably 60g/L；Osmotic pressure is in 500mOsm/kg H2More than O, the molecular weight for drawing liquid can be 6,000,000-1500
Ten thousand, preferably 6,000,000.
Draw liquid and be formulated by drawing liquid powder by stirring and dissolving, selection powder is added compared to configuration concentrated solution
The fresh water for configuring and drawing needed for liquid can further be reduced by adding, so as to reduce the configuration difficulty for drawing liquid.
The concentration for drawing liquid of dilution can be 5-10g/L, preferably 5g/L.
In step (3), more than one groups of liquid powder by second polymer, second surface activating agent and alkali lye are drawn
Into；Wherein, second polymer is polyacrylamide, and second surface activating agent is selected from detergent alkylate naphthenic acid sodium or lignin sulfonic acid
Sodium, alkali lye is selected from sodium hydroxide or potassium hydroxide.
The concentration of second polymer is 1-70g/L, and the concentration of second surface activating agent is 5-500g/L, and the pH value of alkali lye is
10‐11。
Above-mentioned second polymer, second surface activating agent and alkali lye is that poly- drive is recovered the oil and the alkaline surfactant polymer flooding oil-field displacement of reservoir oil
The composition that agent is constituted, takes one or more of which to combine, and configure high concentration draws liquid, so as to ensure higher osmotic pressure
(500mOsm/kgH2More than O).When drawing fluid circulation and occurring, a large amount of water in cyclic process in oil extraction waste water can it is spontaneous enter
Enter to draw liquid runner, diluted so that drawing liquid, what is diluted draws liquid.And draw liquid concentration and dress is added by powder
Put and add above-mentioned substance to control, liquid is drawn in the configuration that need not separately be added water after the normal operation of powder throwing device, but by just oozing
Moisture is fed through journey, the volume that liquid is drawn in cyclic process gradually increases so that draws liquid and is diluted, it can pass through afterwards
Pump be discharged into dilution draw flow container be subsequently used for configure oil displacement agent.The cyclic process is significantly saved to draw in liquid configuration process and consumed
Water, and make to draw liquid and can be used for preparing oil displacement agent after circulation dilution, select this to draw liquid and not only save preparation and drive
Water needed for finish, also makes to be effectively utilized after drawing liquid circulation.
The operational mode of oil extraction waste water advanced treatment and reclamation method based on positive permeability and separation can use continous way or interval
Formula.
In fact, continous way operational mode is：Moisture penetration in oil extraction waste water runner is to the stream for drawing liquid runner
Amount, then continuously add and draw liquid powder, and constantly discharge and suitable with moisture penetration amount draw liquid；Meanwhile, it should keep recovering the oil and give up
The flow and water stabilization of water water inlet, and the oil extraction waste water emission flow of concentration are suitable with the inflow of oil extraction waste water, so as to protect
Hold oil extraction waste water constant concentration.
Periodic running pattern is：Intermittently added by several times in one cycle of operation and draw liquid powder, gradation intermittent discharge is dilute
That releases draws liquid, and time interval is can be controlled within 20-60min, draws liquid concentration and changes in 30-60g/L, draws liquid concentration
Part is discharged into dilution and draws flow container for the preparation of follow-up oil displacement agent when being reduced to 5-10g/L, and then powder throwing device startup is thrown
Plus draw liquid powder improve draw liquid concentration；In one cycle of operation, oil extraction waste water is intermittently added by several times, the oil extraction waste water of concentration
Gradation intermittent discharge time interval is can be controlled within 20-60min, and the oil content of oil extraction waste water concentration is in 100mg/L with upper ripple
Dynamic, oil extraction waste water, which is concentrated, is discharged into concentration oil extraction waste water tank after 2-5 times.
The present invention from oil extraction waste water the technical scheme of recycle-water be：
Centered on forward osmosis membrane component 1, provided with the oil extraction waste water circulatory system and drawing fluid circulation.Forward osmosis membrane group
Part 1 is centered on forward osmosis membrane 17, and forward osmosis membrane component 1 is divided into oil extraction waste water runner 18 and draws liquid stream by forward osmosis membrane 17
Road 19.The import and export of oil extraction waste water runner 18 connect the oil extraction waste water circulatory system respectively, draw the import and export difference of liquid runner 19
Fluid circulation is drawn in connection.Oil extraction waste water is made up of the oil extraction waste water pre-processed, is fed by the raw water in oil extraction waste water pond 2,
Pre- oil extraction waste water in oil extraction waste water pond 2 flows into the oil recovery being connected by the first pump 22, the first valve 25 with oil extraction waste water pond 2 and given up
In water pot 3, the oil extraction waste water in oil extraction waste water tank 3 flows into by the 3rd pump 9, the 3rd valve 12, first flowmeter 24 and recovered the oil
In the water inlet of the connected oil extraction waste water runner of waste water tank 3, concentrated oil extraction waste water, which is flowed into, passes through pipeline 13 and oil extraction waste water
In the connected oil extraction waste water tank 3 of the delivery port of runner, the oil extraction waste water after concentration is in agitating device 20 and the work of temperature control device 10
Under, the oil extraction waste water runner 18 that a part is flowed into forward osmosis membrane component 1 carries out circular response, and remainder is flowed into by the
In the concentrated water tank 4 that two pumps 26, the second valve 25 are connected with oil extraction waste water tank 3；The inflow of liquid powder is drawn in powder throwing device 5
Drawn by what pipeline 13 was connected with powder throwing device 5 in flow container 6, the liquid that draws drawn in flow container 6 is flowed into by the 4th pump
32nd, the 4th valve 31, second flowmeter 11 with draw in the water inlet for drawing liquid runner that flow container 6 is connected, drawing after dilution
Take liquid to flow into draw in flow container 6 by what pipeline 13 was connected with the delivery port for drawing liquid runner, liquid is drawn in stirring after dilution
In the presence of device 20 and temperature control device 10, a part flows into drawing in liquid runner 19 in forward osmosis membrane component 1 and circulated
Reaction, remainder is flowed into be drawn in flow container 7 by the 5th pump 30, the 5th valve 29 with the dilution that flow container 6 is connected is drawn, dilution
The liquid inflow of drawing drawn in flow container 7 draws the oil displacement agent tank 8 that flow container 7 is connected by the 6th pump 28, the 6th valve 27 with dilution
It is interior；The liquid that draws of dilution is flowed into oil displacement agent tank 8 and used as oil displacement agent.
The present invention will be further described with reference to the accompanying drawings.
Embodiment 1：
The oil extraction waste water advanced treatment and reclamation method based on positive permeability and separation of the present embodiment comprises the following steps：
The present embodiment is applied to poly- drive oil extraction waste water, and processing water is 50 ton days, and reuse water is 25 ton days, and production is poly-
Compound oil displacement agent is 40 ton days.
(1), positive process of osmosis：Moisture in oil extraction waste water (the poly- drive oil extraction waste water of selection Daqing oil field) is in permeable pressure head
Driving under inflow draw in liquid runner, water flux is 20LMH so that the liquid that draws drawn in liquid runner is diluted, be
What is diluted draws liquid；Oil extraction waste water is due to the volume reduction of moisture in oil extraction waste water runner, and oil extraction waste water is concentrated, concentration times
Number is 2-5 times, the oil extraction waste water as concentrated.
Wherein, the oil content of oil extraction waste water is in more than 100mg/L, and osmotic pressure is 100mOsm/kgH2O, salinity is
1000mg/L, temperature be 30 DEG C, pH value is 8.0, the polymer in oil extraction waste water be polyacrylamide, concentration 200mg/L with
On, molecular weight is less than 1,000,000, and the oil, polyacrylamide gel in oil extraction waste water form emulsion, is difficult to traditional method point
From, and also there is a certain amount of microorganism in water.
Draw liquid and be formulated by drawing liquid powder by stirring and dissolving, wherein, the concentration for drawing liquid is 60g/L, point
Son amount is 6,000,000, and osmotic pressure is in 500mOsm/kgH2More than O, the concentration for drawing liquid of dilution is 5g/L.
Draw liquid powder by molecular weight be 6,000,000-1,500 ten thousand anion-polyacrylamide (HPAM) and sodium hydroxide
Composition, wherein, the concentration of polyacrylamide is 400g/L, and the pH value of sodium hydroxide is 11.
(2), oil extraction waste water cyclic process：Pre- oil extraction waste water in oil extraction waste water pond, which is flowed into, passes through the first pump, the first valve
In the oil extraction waste water tank being connected with oil extraction waste water pond, oil extraction waste water in oil extraction waste water tank flow into by the 3rd pump, the 3rd valve,
In the water inlet for the oil extraction waste water runner that first flowmeter is connected with oil extraction waste water tank, the forward osmosis membrane of oil extraction waste water runner side
Surface current speed is 10cm/s, and concentrated oil extraction waste water flows into the oil recovery being connected by pipeline with the delivery port of oil extraction waste water runner and given up
In water pot, the oil extraction waste water after concentration is in the presence of agitating device (rotating speed is 60r/min) and temperature control device, and a part is flowed into
Oil extraction waste water runner in forward osmosis membrane component carries out circular response, and remainder is flowed into by the second pump, the second valve and adopted
In the connected concentrated water tank of oily waste water tank.
Wherein, the thickness of forward osmosis membrane is 80 μm, and the oil extraction waste water runner of forward osmosis membrane component sets 5 passage in parallel, is set
20 groups of parallel process, the length of oil extraction waste water runner is 500mm, and width is 500mm, and thickness is 10mm.
(3) liquid cyclic process, is drawn：Liquid powder inflow of drawing in powder throwing device adds dress by pipeline and powder
Put it is connected draw in flow container, the liquid that draws drawn in flow container is flowed into by the 4th pump, the 4th valve, second flowmeter and drawing
What flow container was connected draws in the water inlet of liquid runner, and the forward osmosis membrane surface current speed for drawing liquid runner side is 7.5cm/s, through dilution
Liquid inflow of drawing afterwards is drawn in flow container by pipeline with what the delivery port for drawing liquid runner was connected, and the liquid that draws after dilution is being stirred
Mix in the presence of device (rotating speed is 60r/min) and temperature control device, a part flows into forward osmosis membrane component and draws liquid runner
Interior carry out circular response, remainder is flowed into be drawn in flow container by the 5th pump, the 5th valve with the dilution that flow container is connected is drawn,
The liquid inflow of drawing that dilution is drawn in flow container is drawn in the oil displacement agent tank that flow container is connected by the 6th pump, the 6th valve with dilution.
Wherein, the liquid runner that draws of forward osmosis membrane component sets 4 passage in parallel, draw liquid runner forward osmosis membrane surface flow direction with
Oil extraction waste water runner is on the contrary, the length for drawing liquid runner is 500mm, and width is 500mm, and thickness is 10mm.
(4), draw liquid and utilize process：The liquid that draws of dilution enters in oil displacement agent tank and used as oil displacement agent.
Wherein, forward osmosis membrane uses polyamide composite film, and active layer is polyamide, and supporting layer is polyether sulfone, using FO moulds
Formula, active layer is towards oil extraction waste water side, and supporting layer is towards liquid side is drawn, and the rejection to oil, polyacrylamide and oil emulsion tends to
100%, salt-stopping rate is not less than 99.6%.
In fact, the oil content of oil extraction waste water is possible in more than 100mg/L, osmotic pressure is in 30-150mOsm/kgH2O
Within, salinity within 500-5000mg/L, temperature within 20-50 DEG C, pH value is possible within 7-11.
Oil extraction waste water runner side forward osmosis membrane surface current speed within 5-20cm/s, water flux within 2-40LMH, draw
Take the forward osmosis membrane surface current speed of liquid runner side is possible within 5-15cm/s.
Draw the concentration of liquid within 30-60g/L, molecular weight within 6,000,000-1,500 ten thousand, osmotic pressure is in 500mOsm/
kgH2More than O, the concentration for drawing liquid of dilution are all possible within 5-10g/L.
The length of oil extraction waste water runner is within 400-1500mm, width within 200-1200mm, thickness is in 10-50mm
Within be possible；Draw the length of liquid runner within 400-1500mm, width within 200-1200mm, thickness is in 10-
All it is possible within 50mm.
Its cleaning process is：A physics Membrane cleaning was carried out every 6 hours, oil extraction waste water is closed during cleaning and is followed with drawing liquid
The valve of loop system, is emptied in forward osmosis membrane component by floss hole and oil extraction waste water and draws liquid, by forward osmosis membrane along component walls
On track rise, rinse forward osmosis membrane surface with current, it is every according to the situation that pollutant property, pollution level and flux decline
Once chemistry auxiliary cleaning was carried out every 24 hours, on the basis of physical cleaning, with alkaline cleaning fluid and acidic cleaning solution priority
Wash cycles are carried out, alkaline cleaning fluid is sodium hydroxide solution, and acidic cleaning solution is citric acid, after the completion of cleaning, into next
Before cycle period, with clean water circulation certain time.Flux recovery after flux recovery 94% after physical cleaning, Chemical cleaning
99%.
Embodiment 2
The present embodiment is applied to alkaline surfactant polymer flooding oil-field wastewater, handles the ton day of water 500, and the ton day of reuse water 250 is raw
Produce the ton day of ternary composite driving finish 350.
The oil extraction waste water advanced treatment and reclamation method based on positive permeability and separation of the present embodiment comprises the following steps：
The present embodiment be applied to alkaline surfactant polymer flooding oil-field wastewater, processing water be 500 ton days, reuse water for 250 tons/
My god, production ternary composite driving finish is 350 ton days.
(1), positive process of osmosis：Moisture in oil extraction waste water (alkaline surfactant polymer flooding oil-field wastewater of selection Daqing oil field) is oozing
Inflow is drawn in liquid runner under the driving of saturating pressure difference, and water flux is 20LMH so that the liquid that draws drawn in liquid runner obtains dilute
Release, what is as diluted draws liquid；Oil extraction waste water is due to the volume reduction of moisture in oil extraction waste water runner, and oil extraction waste water is able to dense
Contracting, cycles of concentration is 2-5 times, the oil extraction waste water as concentrated.
Wherein, the oil content of oil extraction waste water is in more than 100mg/L, and osmotic pressure is 100mOsm/kgH2O, salinity is
1500mg/L, temperature be 40 DEG C, pH value is 9.0, the polymer in oil extraction waste water be polyacrylamide, concentration 200mg/L with
On, molecular weight is less than 1,000,000, and surfactant is sodium alkyl benzene sulfonate, and its concentration is in more than 300mg/L, oil extraction waste water
Oil, polyacrylamide gel formation stable emulsion, are difficult to separate, and also have a certain amount of micro- life in water with traditional method
Thing.
Draw liquid and be formulated by drawing liquid powder by stirring and dissolving, wherein, during intermittent duty, draw the concentration of liquid
For 60g/L, molecular weight is 6,000,000, and osmotic pressure is in 500mOsm/kgH2More than O, the concentration for drawing liquid of dilution is 5g/L.
Draw liquid powder by molecular weight be 6,000,000-1,500 ten thousand anion-polyacrylamide, sodium lignin sulfonate and hydrogen
Sodium oxide molybdena is constituted；Wherein, the concentration of polyacrylamide is 40g/L, and the concentration of sodium lignin sulfonate is 100g/L, sodium hydroxide
PH value is 11.
(2), oil extraction waste water cyclic process：Pre- oil extraction waste water in oil extraction waste water pond, which is flowed into, passes through the first pump, the first valve
In the oil extraction waste water tank being connected with oil extraction waste water pond, oil extraction waste water in oil extraction waste water tank flow into by the 3rd pump, the 3rd valve,
In the water inlet for the oil extraction waste water runner that first flowmeter is connected with oil extraction waste water tank, the forward osmosis membrane of oil extraction waste water runner side
Surface current speed is 10cm/s, and concentrated oil extraction waste water flows into the oil recovery being connected by pipeline with the delivery port of oil extraction waste water runner and given up
In water pot, the oil extraction waste water after concentration is in the presence of agitating device (rotating speed is 60r/min) and temperature control device, and a part is flowed into
Oil extraction waste water runner in forward osmosis membrane component carries out circular response, and remainder is flowed into by the second pump, the second valve and adopted
In the connected concentrated water tank of oily waste water tank.
Wherein, the thickness of forward osmosis membrane is 80 μm, and the oil extraction waste water runner of forward osmosis membrane component sets 10 passage in parallel, is set
40 groups of parallel process, the length of oil extraction waste water runner is 1000mm, and width is 1000mm, and thickness is 15mm.
(3) liquid cyclic process, is drawn：Liquid powder inflow of drawing in powder throwing device adds dress by pipeline and powder
Put it is connected draw in flow container, the liquid that draws drawn in flow container is flowed into by the 4th pump, the 4th valve, second flowmeter and drawing
What flow container was connected draws in the water inlet of liquid runner, and the forward osmosis membrane surface current speed for drawing liquid runner side is 7.5cm/s, through dilution
Liquid inflow of drawing afterwards is drawn in flow container by pipeline with what the delivery port for drawing liquid runner was connected, and the liquid that draws after dilution is being stirred
Mix in the presence of device (rotating speed is 60r/min) and temperature control device, a part flows into forward osmosis membrane component and draws liquid runner
Interior carry out circular response, remainder is flowed into be drawn in flow container by the 5th pump, the 5th valve with the dilution that flow container is connected is drawn,
The liquid inflow of drawing that dilution is drawn in flow container is drawn in the oil displacement agent tank that flow container is connected by the 6th pump, the 6th valve with dilution.
Wherein, the liquid runner that draws of forward osmosis membrane component sets 9 passage in parallel, draw liquid runner forward osmosis membrane surface flow direction with
Oil extraction waste water runner is on the contrary, the length for drawing liquid runner is 1000mm, and width is 1000mm, and thickness is 15mm.
(4), draw liquid and utilize process：The liquid that draws of dilution enters in oil displacement agent tank and used as oil displacement agent.
Wherein, forward osmosis membrane uses polyamide composite film, and active layer is polyamide, and supporting layer is polyether sulfone, using FO moulds
Formula, active layer is towards oil extraction waste water side, and supporting layer is towards liquid side is drawn, and the rejection to oil, polyacrylamide and oil emulsion tends to
100%, salt-stopping rate is not less than 99.6%.
Its cleaning process is：A physics Membrane cleaning was carried out every 6 hours, oil extraction waste water is closed during cleaning and is followed with drawing liquid
The valve of loop system, empties the oil extraction waste water in forward osmosis membrane component by floss hole and draws liquid, by forward osmosis membrane along component
Track on wall is risen, and forward osmosis membrane surface is rinsed with current, situation about being declined according to pollutant property, pollution level and flux
Once chemistry auxiliary cleaning was carried out every 24 hours, it is first with alkaline cleaning fluid and acidic cleaning solution on the basis of physical cleaning
After carry out wash cycles, alkaline cleaning fluid is sodium hydroxide solution, and acidic cleaning solution is citric acid, after the completion of cleaning, under
Before one cycle period, with clean water circulation certain time.Flux recovery after flux recovery 97% after physical cleaning, Chemical cleaning
99%.
The above-mentioned description to embodiment is that this hair is understood that and used for the ease of those skilled in the art
It is bright.Those skilled in the art obviously can readily make various modifications to these embodiments, and described herein one
As principle be applied in other embodiment, without passing through performing creative labour.Therefore, the invention is not restricted to above-described embodiment.
Those skilled in the art do not depart from improvement that scope of the invention made and change all should be at these according to the principle of the present invention
Within the protection domain of invention.
Claims (9)
1. a kind of forward osmosis membrane component, it is characterised in that：It includes oil extraction waste water runner and draws liquid runner, the oil extraction waste water
Runner and the liquid runner that draws are spaced, and the oil extraction waste water runner and the liquid runner that draws are separated by forward osmosis membrane；
Water inlet is disposed in the oil extraction waste water runner, and delivery port is arranged below；
Described to draw water inlet in liquid runner and be arranged below, delivery port is disposed over；
The oil extraction waste water runner and described draw in liquid runner are equipped with deflector；
The forward osmosis membrane is detachable.
2. forward osmosis membrane component according to claim 1, it is characterised in that：The length of the oil extraction waste water runner is 400-
1500mm, width is 200-1200mm, and thickness is 10-50mm；And/or,
The length for drawing liquid runner is 400-1500mm, and width is 200-1200mm, and thickness is 10-50mm；And/or, it is excellent
Selection of land, the oil extraction waste water runner and the liquid runner that draws are respectively equipped with 2-10 pairs.
3. forward osmosis membrane component according to claim 1, it is characterised in that：Forward osmosis membrane in the forward osmosis membrane component
Including active layer and supporting layer；And/or,
The material of the active layer is polyamide；And/or,
The material of the supporting layer is selected from polyether sulfone or polyacrylonitrile；And/or,
The thickness of the forward osmosis membrane is 80-150 μm；And/or,
The forward osmosis membrane is shaped as plate and frame.
4. a kind of oil extraction waste water treatment device, it is characterised in that：It includes oil extraction waste water pond, oil extraction waste water tank, concentrated water tank, first
Pump, the second pump, the 3rd pump, the 4th pump, the 5th pump, the 6th pump, the first valve, the second valve, the 3rd valve, the 4th valve,
Five valves, the 6th valve, first flowmeter, second flowmeter, forward osmosis membrane component as claimed in claim 1, powder are added
Device, draw flow container, dilution draw flow container and oil displacement agent tank；
Oil extraction waste water pond is connected by the first pump, the first valve with oil extraction waste water tank；
Oil extraction waste water tank is connected by the second pump, the second valve with concentrated water tank；
Oil extraction waste water tank is connected by the 3rd pump, the 3rd valve, first flowmeter with the water inlet of oil extraction waste water runner, is recovered the oil useless
The delivery port of water flow passage is connected by pipeline with oil extraction waste water tank；
Powder throwing device is connected by pipeline with flow container is drawn；
Draw flow container by the 4th pump, the 4th valve, second flowmeter with the water inlet for drawing liquid runner to be connected, draw liquid runner
Delivery port be connected by pipeline with flow container is drawn；
Flow container is drawn to draw flow container by the 5th pump, the 5th valve with dilution and be connected；
Dilution is drawn flow container and is connected by the 6th pump, the 6th valve with oil displacement agent tank.
5. a kind of oil extraction waste water advanced treatment and reclamation method based on positive permeability and separation, it is characterised in that：It comprises the following steps：
(1), positive process of osmosis：Moisture in oil extraction waste water is entered by permeable pressure head out of oil extraction waste water runner draws liquid runner
It is interior；
(2), oil extraction waste water cyclic process：Pre- oil extraction waste water in oil extraction waste water pond is flowed into by the first pump, the first valve and adopted
In the connected oil extraction waste water tank of oily wastewater disposal basin, the oil extraction waste water in oil extraction waste water tank, which is flowed into, passes through the 3rd pump, the 3rd valve, first
In the water inlet for the oil extraction waste water runner that flowmeter is connected with oil extraction waste water tank, concentrated oil extraction waste water flow into by pipeline and
In the connected oil extraction waste water tank of the delivery port of oil extraction waste water runner, oil extraction waste water after concentration is in agitating device and temperature control device
Under effect, the oil extraction waste water runner that a part is flowed into forward osmosis membrane component carries out circular response, and remainder is flowed into by the
In the concentrated water tank that two pumps, the second valve are connected with oil extraction waste water tank；
(3) liquid cyclic process, is drawn：The liquid powder that draws in powder throwing device is flowed into by pipeline and powder throwing device phase
What is connected draws in flow container, and the liquid that draws drawn in flow container flows into by the 4th pump, the 4th valve, second flowmeter and draws flow container
In the connected water inlet for drawing liquid runner, the delivery port phase that liquid flowed into by pipeline and drawn liquid runner is drawn after dilution
Drawing in flow container even, liquid is drawn in the presence of agitating device and temperature control device after dilution, and a part flows into forward osmosis membrane
Drawing in component carries out circular response in liquid runner, remainder flows into by the 5th pump, the 5th valve and draws flow container phase
Dilution even is drawn in flow container, and the liquid inflow of drawing that dilution is drawn in flow container draws liquid by the 6th pump, the 6th valve and dilution
In the connected oil displacement agent tank of tank；
(4), draw liquid and utilize process：The liquid that draws of dilution is flowed into oil displacement agent tank and used as oil displacement agent.
6. the oil extraction waste water advanced treatment and reclamation method according to claim 5 based on positive permeability and separation, it is characterised in that：
In step (1), the water flux of the oil extraction waste water is 2-40LMH.
7. the oil extraction waste water advanced treatment and reclamation method according to claim 5 based on positive permeability and separation, it is characterised in that：
In step (2), the oil content of the oil extraction waste water is in more than 100mg/L, and osmotic pressure is 30-150mOsm/kgH2O, salinity
For 500-5000mg/L, temperature is 20-50 DEG C, and pH value is 7-11；And/or,
The forward osmosis membrane surface current speed of the oil extraction waste water runner side is 5-20cm/s；And/or,
The rotating speed of the stirring is 60-80r/min；And/or,
The oil extraction waste water contains one or more of first polymer or first surface activating agent；And/or,
The first polymer is polyacrylamide；And/or,
The first surface activating agent is sodium alkyl benzene sulfonate or petroleum sodium sulfonate；And/or,
The concentration of the first polymer is in more than 200mg/L；And/or,
The concentration of the first surface activating agent is in more than 300mg/L.
8. the oil extraction waste water advanced treatment and reclamation method according to claim 5 based on positive permeability and separation, it is characterised in that：
In step (3), the forward osmosis membrane surface current speed for drawing liquid runner side is 5-15cm/s；And/or,
The rotating speed of the stirring is 60-80r/min；And/or,
The concentration for drawing liquid is 30-60g/L, and osmotic pressure is in 500mOsm/kg H2More than O；And/or,
The molecular weight for drawing liquid is 6,000,000-1,500 ten thousand；And/or,
The concentration for drawing liquid of the dilution is 5-10g/L.
9. the oil extraction waste water advanced treatment and reclamation method according to claim 5 based on positive permeability and separation, it is characterised in that：
In step (3), the liquid powder that draws is made up of more than one of second polymer, second surface activating agent and alkali lye；With/
Or,
The second polymer is polyacrylamide；And/or,
The second surface activating agent is selected from detergent alkylate naphthenic acid sodium or sodium lignin sulfonate；And/or,
The alkali lye is selected from sodium hydroxide or potassium hydroxide；And/or,
The concentration of the second polymer is 1-70g/L；And/or,
The concentration of the second surface activating agent is 5-500g/L；And/or,
The pH value of the alkali lye is 10-11.
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| CN108766610A (en) * | 2018-05-31 | 2018-11-06 | 同济大学 | The concentration method and Spent Radioactive water treatment system of radioactive wastewater |
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| CN108766610A (en) * | 2018-05-31 | 2018-11-06 | 同济大学 | The concentration method and Spent Radioactive water treatment system of radioactive wastewater |
| CN108766610B (en) * | 2018-05-31 | 2022-02-08 | 同济大学 | Concentration treatment method of radioactive wastewater and radioactive wastewater treatment system |
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