CN206590995U - A kind of processing unit of oil field extracted water - Google Patents
A kind of processing unit of oil field extracted water Download PDFInfo
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- CN206590995U CN206590995U CN201720310129.1U CN201720310129U CN206590995U CN 206590995 U CN206590995 U CN 206590995U CN 201720310129 U CN201720310129 U CN 201720310129U CN 206590995 U CN206590995 U CN 206590995U
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Abstract
The utility model discloses a kind of processing unit of oil field extracted water, is designed mainly for oil field reinjection water standard, including oxidation case, the first Softening box, the second Softening box, tiny flocculation case, return tank, micro-filtration, reuse case and sludge delivery pump；The oxidation case is used to mix oil field extracted water and oxidant, carries out redox processing, and first Softening box is used for the oil field extracted water after handling redox and carries out first time sofening treatment；Second Softening box is used to carry out second of sofening treatment to the oil field extracted water after first time sofening treatment；The tiny flocculation case is used to carry out tiny flocculation processing to the oil field extracted water after second of sofening treatment；The return tank carries out coagulating treatment after being used for the oil field extracted water after tiny flocculation is handled and phegma mixing；The micro-filtration is used to carry out micro-filtration processing to the oil field extracted water after coagulating treatment；The sludge delivery pump is used to sludge in return tank being delivered to sludge treatment equipment.
Description
Technical field
The utility model belongs to Industrial Wastewater Treatment and reuse technology field, more particularly to a kind of processing of oil field extracted water
Device.
Background technology
With continuing to develop for oil field, oil field industry is constantly changed, oil recovery technique successively experienced once, it is secondary, three times
Recover the oil, current China's oilfield exploitation has reached higher development, in the follow-up developments stage, be substantially carried out it is secondary, adopt for three times
Oil.Secondary oil recovery is main to recover the oil in the way of artificial recharge keeps strata pressure；Tertiary oil recovery is mainly injects water by changing
Characteristic is recovered the oil, and such as adds alkali, surfactant, polymer chemical substance into injection water.As secondary, tertiary oil recovery is big
The expansion of scale, oil field produced water steeply rises.Oil field extracted water is to be dehydrated separation through crude oil with what oil producing operation was produced
Oil-polluted water afterwards, wherein (about 1000~2000mg/L, sometimes even up to 5000mg/L, existence form are main containing oils
For oil slick, dispersed oil, oil emulsion and dissolved oil), suspension (generally 100~1000mg/L, mainly include FeS particles, flour sand
With fine sand etc.), salt content (concentration range 103~106Mg/L, mainly including Ca2+、Mg2+、K+、Na+、Fe2+、Cl-、HCO3 -、
CO3 2-Deng), organic matter (comprising aliphatic hydrocarbon, aromatic hydrocarbon, phenols, organic sulfur compound, aliphatic acid, surfactant, polymer etc.),
Microorganism (predominantly sulfate reducing bacteria, saprophytic bacteria and iron bacteria etc.).Substantial amounts of oil field extracted water is not if handled it
Reuse, not only results in the serious waste of water resource, and pollutes the environment.If being returned after oil field extracted water is effectively handled
With, can not only saving water resource, reduction oil play use water cost, and environmental pollution can be reduced.
For the major pollutants in oil field extracted water, the main gravitational settling for the treatment of technology, centrifugation, gas are commonly used at present
Floating, filtering, absorption, cohesion, oxidation, bioanalysis, membrane technology, ultrasonic technology and combinations thereof technique.These processing sides
Method has corresponding limitation, and exclusive use is often extremely difficult to emission request.With gradually stepping up for environmental requirement, the later stage is again
The group technology of above-mentioned processing method is gradually developed, for example, Zhang Lei et al. is adopted using " tiny flocculation+filtering " PROCESS FOR TREATMENT oil field
Water outlet, under conditions of water inlet oil and SS concentration are respectively 60mg/L and 25mg/L, water outlet oil and SS concentration be reached for 1mg/L and
3mg/L (thunder etc. handles oil field extracted water, chemical industry environmental protection, 2010,156-158 using tiny flocculation-filtering technique)；Zhang Zhiqiang
Oil recovery ozone-biological carbon technical finesse Jinzhou oil field extracted water, by 600~1000mg/L of COD concentration, petroleum-type 500mg/L, hangs
Float 500mg/L handles COD concentration 50mg/L, petroleum-type 1.6mg/L, suspension 1.4mg/L (Zhang Zhiqiang, ozone-life respectively
Thing carbon technique handles the experimental study of Jinzhou oil field extracted water, geological and mineral, 2012,121-123)；Small base of Cai et al. is using rotation
Stream-air-floating integral unit processing Qinhuangdao oil field extracted water, by oil content 1700mg/L processing to 20mg/L (Cai is small to build etc.,
The type cyclone air-flotations of BIPTCFU- III integration produced water treatment model machine and its analysis of experiments in QHD 32-6 Oilfield, China sea
Upper oil gas, 2014,80-85).These methods and combinations thereof technique has certain to the oils in oil field extracted water, suspension etc.
Treatment effect, but still can not meet extra permeability oilfield re-injection water quality standard-《Clastic rock reservoir water water quality fertilizer index and
Analysis method》Requirement (i.e. water outlet oil-containing≤5mg/L, the SS≤1mg/L, suspension grain of " 5-1-1 " of (SY/T 5329-2012)
Footpath intermediate value≤1 μm), especially to (the predominantly Ca of fouling tendency ion in oil field extracted water2+、Mg2+、HCO3 -、CO3 2-) substantially without processing
Effect, causes pipeline, the fouling and corrosion of equipment.
The problem of being unable to reach reuse requirement for oil field conventional method and remove salt content, researcher is by application of membrane
Into the processing of oil field extracted water.Lu Yan et al. utilizes ultrafiltration membrane treatment oil field extracted water, water outlet oil content 0.2mg/L, suspension
Thing 0.2mg/L (Lu Yan etc., the micro-analysis of ultrafiltration membrane treatment oil field extracted water and polluted membrane, chemical industry environmental protection, 2009,139-
143)；Pan Zhen rivers et al. meet oil field reinjection water using " ultrafiltration+nanofiltration " double membrane process processing oil field extracted waters, effluent quality
It is required that (Pan Zhenjiang etc., the field test research of bimodulus method advanced treating oil field extracted water, water technology, 2010,86-89).
But these membrane technologies still do not solve to remove salt content, eliminate the problem of pipeline and equipment scaling are with corrosion, and bi-membrane method
Investment and operating cost are too high, and operation stability is poor, are not suitable for the treatment for reuse of large-scale oil field extracted water.Therefore, develop
A kind of oil field reinjection water standard that can meet can solve the treatment Technology for Petroleum Water Flooding of scaling on equipment and pipeline etching problem again
It is significant.
Utility model content
In view of the above-mentioned problems, the utility model provides a kind of oil field produced water process dress that can meet oil field reinjection water standard
Put.
For up to above-mentioned purpose, a kind of oil field produced water treatment facilities of the utility model, including oxidation case, the first Softening box,
Second Softening box, tiny flocculation case, return tank, micro-filtration, reuse case and sludge delivery pump；
The oxidation case is used to mix oil field extracted water and oxidant, carries out redox processing, the oxidation case
Delivery port is connected with the water inlet of the first Softening box by overflow pipe；
First Softening box is used for the oil field extracted water after handling redox and carries out first time sofening treatment；It is described
First Softening box is connected with the second Softening box by overfall；
Second Softening box is used to carry out second of sofening treatment to the oil field extracted water after first time sofening treatment；Institute
The second Softening box is stated to connect by overfall with tiny flocculation case；
The tiny flocculation case is used to carry out tiny flocculation processing, micro- wadding to the oil field extracted water after second of sofening treatment
The delivery port of solidifying case is connected with the water inlet of return tank by overflow pipe；
The return tank carries out coagulating treatment after being used for the oil field extracted water after tiny flocculation is handled and phegma mixing；Institute
The delivery port for stating return tank is connected with the water inlet of the micro-filtration by overflow pipe；
The micro-filtration is used to carry out micro-filtration processing to the oil field extracted water after coagulating treatment, and water outlet enters recycle-water
Case；
The sludge delivery pump is used to remaining sludge in return tank being delivered to sludge treatment equipment.
Preferably, being provided with NaClO solution throwing devices in the oxidation case；The NaClO solution throwing device is used for
It is 20~100mg/L to control NaClO solution dosage.
Preferably, being provided with CaO throwing devices or NaOH throwing devices in first Softening box；
The CaO throwing devices are used to control CaO dosages to be 0.01~0.1kg/L；
The NaOH throwing devices are used to control NaOH dosages to be 0.002~0.05kg/L.
Preferably, being provided with Na in second Softening box2CO3Throwing device；
If setting CaO throwing devices, the Na in the first Softening box2CO3Throwing device is used to control Na2CO3Dosage
For 0.025~0.25kg/L；
If setting NaOH throwing devices, the Na in the first Softening box2CO3Throwing device is used to control Na2CO3Add
Measure as 0.002~0.05kg/L.
Preferably, being provided with aluminum salt solution or iron salt solutions throwing device in the tiny flocculation case；The aluminum salt solution or
Iron salt solutions throwing device is used to control the concentration of aluminum salt solution or iron salt solutions to be 2%~20%, and dosage is 2~15L/
m3。
Preferably, being provided with polyacrylamide throwing device in the return tank, the polyacrylamide throwing device is used
In controlling the concentration of polyacrylamide to be 0.5%~10%, dosage is 10~50L/m3。
Preferably, the micro-filtration is tubular type micro-filtration；The producing water ratio of the tubular type micro-filtration be 90%~
99%, excess sludge discharge rate is 2%~5%.
Preferably, also including reflux ratio controller and sludge treatment equipment；
The reflux ratio that the reflux ratio controller is used for the phegma of control pipe formula micro-filtration is 3:1~5:1；
The sludge treatment equipment is for the sludge in access return tank and is handled.
Stirred preferably, being provided with described pair of oxidation case, the first Softening box, the second Softening box, tiny flocculation case, return tank
Device is mixed, for being stirred to oil field extracted water.
Preferably, also including timer, the time of repose for calculating oil field extracted water after agitator is stopped.
The processing unit of oil field extracted water of the present utility model makes the oil field extracted water after processing meet oil field reinjection water
The requirement (i.e. water outlet oil-containing≤5mg/L, SS≤1mg/L, suspension median particle size≤1 μm) of " 5-1-1 " in standard, can be achieved useless
Water circulation, saving water resource reduces oil play water cost, reduces environmental pollution.With the pipeline, equipment scaling faced and corruption
The problem of erosion, the highest standard-spy that can not only meet the reinjected water after oil field produced water process by the processing unit is hypotonic
Saturating oil field reinjection water standard (i.e. 5-1-1 standards), and the synchronous fouling tendency ion eliminated in recovered water, realize waste water and return
With while solving the pipeline faced in oil field extracted water Technology development, the fouling of equipment and etching problem, improving water
Operational efficiency is handled, operating cost is reduced.
Brief description of the drawings
The utility model oil field produced water treatment facilities schematic diagram during Fig. 1.
1. oxidation case in figure；2.NaClO throwing devices；3. aoxidize case mechanical agitator；4. aoxidize case overfall；5.#1 is soft
Change case；6.NaOH or CaO throwing devices；7.#1 Softening box mechanical agitator；8.#1 Softening box overfall；9#2 Softening boxs；
10.Na2CO3Throwing device；11.#2 Softening box mechanical agitators；12.#2 Softening box overfalls；13. tiny flocculation case；14. flocculation
Agent throwing device；15. tiny flocculation case mechanical agitator；16. tiny flocculation case overfall；17. return tank；18.PAM throwing devices；
19. return tank mechanical agitator；20. tubular type micro-filtration intake pump；21. tubular type micro-filtration；22. sludge delivery pump；23. recycle-water
Case；24. reflux pump.
Embodiment
The utility model is further described with reference to Figure of description.
Embodiment one
A kind of oil field produced water treatment facilities of the utility model, including it is oxidation case, the first Softening box, the second Softening box, micro-
Flocculation tanks, return tank, micro-filtration, reuse case and sludge delivery pump；
The oxidation case is used to mix oil field extracted water and oxidant, carries out redox processing, the oxidation case
Delivery port is connected with the water inlet of the first Softening box by overflow pipe；
First Softening box is used for the oil field extracted water after handling redox and carries out first time sofening treatment；It is described
First Softening box is connected with the second Softening box by overfall；
Second Softening box is used to carry out second of sofening treatment to the oil field extracted water after first time sofening treatment；Institute
The second Softening box is stated to connect by overfall with tiny flocculation case；
The tiny flocculation case is used to carry out tiny flocculation processing, micro- wadding to the oil field extracted water after second of sofening treatment
The delivery port of solidifying case is connected with the water inlet of return tank by overflow pipe；
The return tank carries out coagulating treatment after being used for the oil field extracted water after tiny flocculation is handled and phegma mixing；Institute
The delivery port for stating return tank is connected with the water inlet of the micro-filtration by overflow pipe；
The micro-filtration is used to carry out micro-filtration processing to the oil field extracted water after coagulating treatment, and water outlet enters recycle-water
Case；
The sludge delivery pump is used to remaining sludge in return tank being delivered to sludge treatment equipment.
As the further improvement of embodiment one, NaClO solution throwing devices are provided with the oxidation case；It is described
NaClO solution throwing device is used to control NaClO solution dosage to be 20~100mg/L.
CaO throwing devices or NaOH throwing devices are provided with first Softening box；
The CaO throwing devices are used to control CaO dosages to be 0.01~0.1kg/L；
The NaOH throwing devices are used to control NaOH dosages to be 0.002~0.05kg/L.
Na is provided with second Softening box2CO3Throwing device；If specifically, setting CaO to add in the first Softening box
Device, the then Na2CO3Throwing device is used to control Na2CO3Dosage is 0.025~0.25kg/L；
If setting NaOH throwing devices, the Na in the first Softening box2CO3Throwing device is used to control Na2CO3Add
Measure as 0.002~0.05kg/L.
Aluminum salt solution or iron salt solutions throwing device are provided with the tiny flocculation case；The aluminum salt solution or iron salt solutions
Throwing device is used to control the concentration of aluminum salt solution or iron salt solutions to be 2%~20%, and dosage is 2~15L/m3。
Polyacrylamide throwing device is provided with the return tank, the polyacrylamide throwing device is used to control to gather
The concentration of acrylamide is 0.5%~10%, and dosage is 10~50L/m3。
The micro-filtration is tubular type micro-filtration；The producing water ratio of the tubular type micro-filtration is 90%~99%, remaining
Sludge discharge rate is 2%~5%.
Device described in the utility model also includes reflux ratio controller and sludge treatment equipment；
The reflux ratio that the reflux ratio controller is used for the phegma of control pipe formula micro-filtration is 3:1~5:1；
The sludge treatment equipment is for the sludge in access return tank and is handled.
Agitator is provided with described pair of oxidation case, the first Softening box, the second Softening box, tiny flocculation case, return tank, is used
It is stirred in oil field extracted water.
Also include timer, the time of repose for calculating oil field extracted water after agitator is stopped.
Embodiment two
With reference to Fig. 1, oil field extracted water introduces oxidation case 1 by water inlet pipe, and NaClO, oxygen are added by NaClO throwing devices
Change case mechanical agitator 3 and be stirred mixing, occur redox reaction in oxidation case 1, larger molecular organicses change into small
Molecular organic and inorganic matter；The water outlet for aoxidizing case 1 enters #1 Softening boxs 5 by aoxidizing case overfall 4, passes through NaOH or CaO
Throwing device 6 adds NaOH or CaO, #1 Softening box mechanical agitator 7 is stirred mixing, and first is carried out in #1 Softening boxs 5
Step softening, removes the fouling tendency ions such as Ca2+, Mg2+, CO32-, HCO3-；The water outlet of #1 Softening boxs 5 passes through #1 Softening box overflows
Mouth 8 enters #2 Softening boxs 9, passes through Na2CO3Throwing device 10 adds Na2CO3, and #2 Softening boxs mechanical agitator 11 is stirred mixed
Close, second step softening is carried out in #2 Softening boxs 9, remove unnecessary Ca2+；The water outlet of #2 Softening boxs 9 passes through #2 Softening box overflows
Mouth 12 enters tiny flocculation case 13, adds flocculant by flocculating agent feeding device 14, tiny flocculation case mechanical agitator 15 is stirred
Mixing is mixed, tiny flocculation reaction is carried out in tiny flocculation case 13；The water outlet of # tiny flocculations case 13 is entered by tiny flocculation case overfall 16
Return tank 17, adds PAM, return tank case mechanical agitator 19 is stirred mixing, in return tank 17 by PAM throwing devices 18
Middle tiny flocculation mixed liquor is mixed with phegma；The water outlet of return tank 17 enters tubular type micro-filtration by tubular type micro-filtration intake pump 20
21, the excess sludge in return tank 17 delivers to sludge treatment equipment by sludge delivery pump 22；The water outlet of tubular type micro-filtration 21
Into reuse water tank 23 with standby, phegma is back to return tank 17 by reflux pump 24
Embodiment three
The oil field extracted water of oil-containing 2000mg/L, suspension 700mg/L, 5 μm of suspension median particle size is drawn in this example
Enter and aoxidize case, add NaClO and carry out mechanical agitation mixing, NaClO dosage is 100mg/L, and stir speed (S.S.) is 200rpm,
Hydraulic detention time is 2h；The water outlet for aoxidizing case is introduced into #1 Softening boxs, CaO is added and carries out mechanical agitation mixing, CaO throwing
Dosage is 0.1kg/L, and stir speed (S.S.) is 200rpm, and hydraulic detention time is 2h；The water outlet of #1 Softening boxs is introduced into #2 Softening boxs,
Add Na2CO3And carry out mechanical agitation mixing, Na2CO3Dosage be 0.25kg/L, stir speed (S.S.) is 200rpm, and waterpower is stopped
It is 2h to stay the time；The water outlet of #2 Softening boxs is introduced into tiny flocculation case, AlCl is added3And carry out mechanical agitation mixing, AlCl3Match somebody with somebody
Mass concentration processed is 20%, and dosage is 15L/m3；Stir speed (S.S.) is 250rpm, and hydraulic detention time is 10min；By tiny flocculation
Reaction mixture introduces return tank, and carrying out mechanical agitation with phegma mixes, and adds PAM, and PAM prepares mass concentration and is
10%, dosage is 50L/m3, mixing speed is 200rpm, and hydraulic detention time is 1h；By the mixed liquor in return tank
Tubular type micro-filtration is introduced, excess sludge is discharged into sludge treatment equipment, and the producing water ratio of tubular type micro-filtration is 99%, excess sludge
Discharge rate is 5%；The water outlet of tubular type micro-filtration is introduced into reuse water tank in case with phegma is back to return tank, phegma
Reflux ratio be 5:1.
By the oily waste water of this technique, water outlet oil-containing 3.6mg/L, suspension 0.6mg/L, the μ of suspension median particle size 0.2
M, meets reuse requirement.
Example IV
The oil field extracted water of oil-containing 200mg/L, suspension 100mg/L, 5 μm of suspension median particle size is introduced in this example
Case is aoxidized, NaClO is added and carries out mechanical agitation mixing, NaClO dosage is 20mg/L, and stir speed (S.S.) is 50rpm, waterpower
Residence time is 0.5h；The water outlet for aoxidizing case is introduced into #1 Softening boxs, CaO is added and carries out mechanical agitation mixing, CaO's adds
Measure as 0.01kg/L, stir speed (S.S.) is 50rpm, and hydraulic detention time is 0.5h；The water outlet of #1 Softening boxs is introduced into #2 Softening boxs,
Add Na2CO3And carry out mechanical agitation mixing, Na2CO3Dosage be 0.025kg/L, stir speed (S.S.) is 50rpm, and waterpower is stopped
It is 0.5h to stay the time；The water outlet of #2 Softening boxs is introduced into tiny flocculation case, AlCl is added3And carry out mechanical agitation mixing, AlCl3's
It is 2% to prepare mass concentration, and dosage is 2L/m3；Stir speed (S.S.) is 60rpm, and hydraulic detention time is 2min；Tiny flocculation is anti-
Answer mixed liquor to introduce return tank, carrying out mechanical agitation with phegma mixes, and add PAM, it is 0.5% that PAM, which prepares mass concentration,
Dosage is 10L/m3, mixing speed is 50rpm, and hydraulic detention time is 0.5h；Mixed liquor in return tank is introduced
Tubular type micro-filtration, excess sludge is discharged into sludge treatment equipment, and the producing water ratio of tubular type micro-filtration is 90%, excess sludge discharge
Rate is 2%；The water outlet of tubular type micro-filtration is introduced into reuse water tank in case with phegma is back to return tank, time of phegma
Stream is than being 3:1.
By the oily waste water of this technique, water outlet oil-containing 3.1mg/L, suspension 0.6mg/L, the μ of suspension median particle size 0.2
M, meets reuse requirement.
Embodiment five
The oil field extracted water of oil-containing 200mg/L, suspension 100mg/L, 3 μm of suspension median particle size is introduced in this example
Case is aoxidized, NaClO is added and carries out mechanical agitation mixing, NaClO dosage is 20mg/L, and stir speed (S.S.) is 50rpm, waterpower
Residence time is 0.5h；The water outlet for aoxidizing case is introduced into #1 Softening boxs, NaOH is added and carries out mechanical agitation mixing, NaOH throwing
Dosage is 0.002kg/L, and stir speed (S.S.) is 50rpm, and hydraulic detention time is 0.5h；The water outlet of #1 Softening boxs is introduced into #2 softenings
Case, adds Na2CO3And carry out mechanical agitation mixing, Na2CO3Dosage be 0.01kg/L, stir speed (S.S.) is 50rpm, waterpower
Residence time is 0.5h；The water outlet of #2 Softening boxs is introduced into tiny flocculation case, FeCl is added3And carry out mechanical agitation mixing, FeCl3
Preparation mass concentration be 2%, dosage is 2L/m3；Stir speed (S.S.) is 60rpm, and hydraulic detention time is 2min；By tiny flocculation
Reaction mixture introduces return tank, and carrying out mechanical agitation with phegma mixes, and adds PAM, and PAM prepares mass concentration and is
0.5%, dosage is 10L/m3, mixing speed is 50rpm, and hydraulic detention time is 0.5h；By the mixing in return tank
Liquid introduces tubular type micro-filtration, and excess sludge is discharged into sludge treatment equipment, and the producing water ratio of tubular type micro-filtration is 90%, remaining dirty
Mud discharge rate is 2%；The water outlet of tubular type micro-filtration is introduced into reuse water tank in case with phegma is back to return tank, backflow
The reflux ratio of liquid is 3:1.
By the oily waste water of this technique, water outlet oil-containing 2.9mg/L, suspension 0.5mg/L, the μ of suspension median particle size 0.1
M, meets reuse requirement.
Embodiment six
The oil field extracted water of oil-containing 1500mg/L, suspension 500mg/L, 4 μm of suspension median particle size is drawn in this example
Enter and aoxidize case, add NaClO and carry out mechanical agitation mixing, NaClO dosage is 100mg/L, and stir speed (S.S.) is 200rpm,
Hydraulic detention time is 2h；The water outlet for aoxidizing case is introduced into #1 Softening boxs, NaOH is added and carries out mechanical agitation mixing, NaOH's
Dosage is 0.05kg/L, and stir speed (S.S.) is 200rpm, and hydraulic detention time is 2h；The water outlet of #1 Softening boxs is introduced into #2 softenings
Case, adds Na2CO3And carry out mechanical agitation mixing, Na2CO3Dosage be 0.15kg/L, stir speed (S.S.) is 200rpm, waterpower
Residence time is 2h；The water outlet of #2 Softening boxs is introduced into tiny flocculation case, FeCl is added3And carry out mechanical agitation mixing, aluminium salt or
The preparation mass concentration of molysite is 20%, and dosage is 15L/m3；Stir speed (S.S.) is 250rpm, and hydraulic detention time is 10min；
Tiny flocculation reaction mixture is introduced into return tank, carrying out mechanical agitation with phegma mixes, and adds PAM, and it is dense that PAM prepares quality
Spend for 10%, dosage is 50L/m3, mixing speed is 200rpm, and hydraulic detention time is 1h；Will be mixed in return tank
Close liquid and introduce tubular type micro-filtration, excess sludge is discharged into sludge treatment equipment, and the producing water ratio of tubular type micro-filtration is 99%, remaining
Sludge discharge rate is 5%；The water outlet of tubular type micro-filtration is introduced into reuse water tank in case with phegma is back to return tank, returns
The reflux ratio of flow liquid is 5:1.
By the oily waste water of this technique, water outlet oil-containing 4.0mg/L, suspension 0.5mg/L, the μ of suspension median particle size 0.4
M, meets reuse requirement.
Embodiment seven
The oil field extracted water of oil-containing 900mg/L, suspension 400mg/L, 3 μm of suspension median particle size is introduced in this example
Case is aoxidized, NaClO is added and carries out mechanical agitation mixing, NaClO dosage is 50mg/L, and stir speed (S.S.) is 100rpm, water
The power residence time is 1h；The water outlet for aoxidizing case is introduced into #1 Softening boxs, CaO is added and carries out mechanical agitation mixing, CaO's adds
Measure as 0.05kg/L, stir speed (S.S.) is 150rpm, and hydraulic detention time is 1.5h；The water outlet of #1 Softening boxs is introduced into #2 softenings
Case, adds Na2CO3And carry out mechanical agitation mixing, Na2CO3Dosage be 0.1kg/L, stir speed (S.S.) is 120rpm, waterpower
Residence time is 1.2h；The water outlet of #2 Softening boxs is introduced into tiny flocculation case, Al is added2(SO4)3And carry out mechanical agitation mixing,
Al2(SO4)3Preparation mass concentration be 10%, dosage is 8L/m3；Stir speed (S.S.) is 150rpm, and hydraulic detention time is
7min；Tiny flocculation reaction mixture is introduced into return tank, carrying out mechanical agitation with phegma is mixed, and adds PAM, and PAM is prepared
Mass concentration is 5%, and dosage is 30L/m3, mixing speed is 110rpm, and hydraulic detention time is 0.7h；By return tank
In mixed liquor introduce tubular type micro-filtration, excess sludge is discharged into sludge treatment equipment, and the producing water ratio of tubular type micro-filtration is
95%, excess sludge discharge rate is 2.5%；The water outlet of tubular type micro-filtration is introduced into reuse water tank in case with phegma flows back
To return tank, the reflux ratio of phegma is 4:1.
By the oily waste water of this technique, water outlet oil-containing 2.7mg/L, suspension 0.4mg/L, the μ of suspension median particle size 0.1
M, meets reuse requirement.
Embodiment eight
The oil field extracted water of oil-containing 1200mg/L, suspension 400mg/L, 4 μm of suspension median particle size is drawn in this example
Enter and aoxidize case, add NaClO and carry out mechanical agitation mixing, NaClO dosage 120mg/L, stir speed (S.S.) is 140rpm, water
The power residence time is 1.1h；The water outlet for aoxidizing case is introduced into #1 Softening boxs, NaOH is added and carries out mechanical agitation mixing, NaOH's
Dosage is 0.025kg/L, and stir speed (S.S.) is 130rpm, and hydraulic detention time is 1h；The water outlet of #1 Softening boxs is introduced into #2 soft
Change case, add Na2CO3And carry out mechanical agitation mixing, Na2CO3Dosage be 0.08kg/L, stir speed (S.S.) is 100rpm, water
The power residence time is 1.5h；The water outlet of #2 Softening boxs is introduced into tiny flocculation case, Fe is added2(SO4)3And carry out mechanical agitation mixing,
Fe2(SO4)3Preparation mass concentration be 10%, dosage is 9L/m3；Stir speed (S.S.) is 200rpm, and hydraulic detention time is
9min；Tiny flocculation reaction mixture is introduced into return tank, carrying out mechanical agitation with phegma is mixed, and adds PAM, and PAM is prepared
Mass concentration is 6%, and dosage is 35L/m3, mixing speed is 125rpm, and hydraulic detention time is 0.8h；By return tank
In mixed liquor introduce tubular type micro-filtration, excess sludge is discharged into sludge treatment equipment, and the producing water ratio of tubular type micro-filtration is
97%, excess sludge discharge rate is 3%；The water outlet of tubular type micro-filtration is introduced into reuse water tank in case with phegma is back to
Return tank, the reflux ratio of phegma is 3.8:1.
By the oily waste water of this technique, water outlet oil-containing 4.2mg/L, suspension 0.7mg/L, the μ of suspension median particle size 0.2
M, meets reuse requirement.
Embodiment nine
The oil field extracted water of oil-containing 150mg/L, suspension 120mg/L, 4 μm of suspension median particle size is introduced in this example
Case is aoxidized, NaClO is added and carries out mechanical agitation mixing, NaClO dosage is 100mg/L, and stir speed (S.S.) is 50rpm, water
The power residence time is 0.5h；The water outlet for aoxidizing case is introduced into #1 Softening boxs, CaO is added and carries out mechanical agitation mixing, CaO throwing
Dosage is 0.1kg/L, and stir speed (S.S.) is 50rpm, and hydraulic detention time is 1.5h；The water outlet of #1 Softening boxs is introduced into #2 softenings
Case, adds Na2CO3And carry out mechanical agitation mixing, Na2CO3Dosage be 0.25kg/L, stir speed (S.S.) is 80rpm, waterpower
Residence time is 1.8h；The water outlet of #2 Softening boxs is introduced into tiny flocculation case, Fe is added2(SO4)3And carry out mechanical agitation mixing,
Fe2(SO4)3Preparation mass concentration be 12%, dosage is 11L/m3；Stir speed (S.S.) is 120rpm, and hydraulic detention time is
4min；Tiny flocculation reaction mixture is introduced into return tank, carrying out mechanical agitation with phegma is mixed, and adds PAM, and PAM is prepared
Mass concentration is 5.5%, and dosage is 18L/m3, mixing speed is 70rpm, and hydraulic detention time is 0.9h；Will backflow
Mixed liquor in case introduces tubular type micro-filtration, and excess sludge is discharged into sludge treatment equipment, and the producing water ratio of tubular type micro-filtration is
96%, excess sludge discharge rate is 2.8%；The water outlet of tubular type micro-filtration is introduced into reuse water tank in case with phegma flows back
To return tank, the reflux ratio of phegma is 4.2:1.
By the oily waste water of this technique, water outlet oil-containing 2.0mg/L, suspension 0.3mg/L, the μ of suspension median particle size 0.1
M, meets reuse requirement.
Embodiment ten
The oil field extracted water of oil-containing 700mg/L, suspension 600mg/L, 6 μm of suspension median particle size is introduced in this example
Case is aoxidized, NaClO is added and carries out mechanical agitation mixing, NaClO dosage is 70mg/L, and stir speed (S.S.) is 90rpm, waterpower
Residence time is 0.6h；The water outlet for aoxidizing case is introduced into #1 Softening boxs, NaOH is added and carries out mechanical agitation mixing, NaOH throwing
Dosage is 0.035kg/L, and stir speed (S.S.) is 60rpm, and hydraulic detention time is 0.9h；The water outlet of #1 Softening boxs is introduced into #2 softenings
Case, adds Na2CO3And carry out mechanical agitation mixing, Na2CO3Dosage be 0.11kg/L, stir speed (S.S.) is 190rpm, waterpower
Residence time is 1.2h；The water outlet of #2 Softening boxs is introduced into tiny flocculation case, Al is added2(SO4)3And carry out mechanical agitation mixing,
Al2(SO4)3Preparation mass concentration be 15%, dosage is 11L/m3；Stir speed (S.S.) is 170rpm, and hydraulic detention time is
6.5min；Tiny flocculation reaction mixture is introduced into return tank, carrying out mechanical agitation with phegma mixes, and adds PAM, and PAM matches somebody with somebody
Mass concentration processed is 5.5%, and dosage is 35.5L/m3, mixing speed is 168rpm, and hydraulic detention time is 0.8h；Will
Mixed liquor in return tank introduces tubular type micro-filtration, and excess sludge is discharged into sludge treatment equipment, the production water of tubular type micro-filtration
Rate is 97%, and excess sludge discharge rate is 4%；The water outlet of tubular type micro-filtration is introduced into reuse water tank in case with phegma is returned
Return tank is flow to, the reflux ratio of phegma is 3.2:1.
By the oily waste water of this technique, water outlet oil-containing 2.8mg/L, suspension 0.6mg/L, the μ of suspension median particle size 0.2
M, meets reuse requirement.
Embodiment 11
The oil field extracted water of oil-containing 250mg/L, suspension 200mg/L, 5 μm of suspension median particle size is introduced in this example
Case is aoxidized, NaClO is added and carries out mechanical agitation mixing, NaClO dosage is 100mg/L, and stir speed (S.S.) is 50rpm, water
The power residence time is 2h；The water outlet for aoxidizing case is introduced into #1 Softening boxs, CaO is added and carries out mechanical agitation mixing, CaO's adds
Measure as 0.01kg/L, stir speed (S.S.) is 200rpm, and hydraulic detention time is 1.6h；The water outlet of #1 Softening boxs is introduced into #2 softenings
Case, adds Na2CO3And carry out mechanical agitation mixing, Na2CO3Dosage be 0.2kg/L, stir speed (S.S.) is 100rpm, waterpower
Residence time is 1.4h；The water outlet of #2 Softening boxs is introduced into tiny flocculation case, aluminium salt or molysite is added and carries out mechanical agitation mixing,
AlCl3Preparation mass concentration be 11%, dosage is 13L/m3；Stir speed (S.S.) is 160rpm, and hydraulic detention time is 10min；
Tiny flocculation reaction mixture is introduced into return tank, carrying out mechanical agitation with phegma mixes, and adds PAM, and it is dense that PAM prepares quality
Spend for 0.8%, dosage is 18L/m3, mixing speed is 140rpm, and hydraulic detention time is 0.5h；By in return tank
Mixed liquor introduces tubular type micro-filtration, and excess sludge is discharged into sludge treatment equipment, and the producing water ratio of tubular type micro-filtration is 91%, is remained
Remaining sludge discharge rate is 5%；The water outlet of tubular type micro-filtration is introduced into reuse water tank in case with, phegma is back to return tank,
The reflux ratio of phegma is 4.5:1.
By the oily waste water of this technique, water outlet oil-containing 1.8mg/L, suspension 0.2mg/L, the μ of suspension median particle size 0.1
M, meets reuse requirement.
Embodiment 12
The oil field extracted water of oil-containing 1800mg/L, suspension 600mg/L, 5 μm of suspension median particle size is drawn in this example
Enter and aoxidize case, add NaClO and carry out mechanical agitation mixing, NaClO dosage 50mg/L, stir speed (S.S.) is 150rpm, water
The power residence time is 2h；The water outlet for aoxidizing case is introduced into #1 Softening boxs, NaOH is added and carries out mechanical agitation mixing, NaOH throwing
Dosage is 0.04kg/L, and stir speed (S.S.) is 90rpm, and hydraulic detention time is 1.7h；The water outlet of #1 Softening boxs is introduced into #2 softenings
Case, adds Na2CO3And carry out mechanical agitation mixing, Na2CO3Dosage be 0.15kg/L, stir speed (S.S.) is 90rpm, waterpower
Residence time is 1.2h；The water outlet of #2 Softening boxs is introduced into tiny flocculation case, FeCl is added3And carry out mechanical agitation mixing, FeCl3
Preparation mass concentration be 16%, dosage is 14L/m3；Stir speed (S.S.) is 200rpm, and hydraulic detention time is 7min；Will be micro-
Flocculation reaction mixed liquor introduces return tank, and carrying out mechanical agitation with phegma mixes, and adds PAM, and PAM prepares mass concentration and is
10%, dosage is 10L/m3, mixing speed is 130rpm, and hydraulic detention time is 0.6h；By the mixing in return tank
Liquid introduces tubular type micro-filtration, and excess sludge is discharged into sludge treatment equipment, and the producing water ratio of tubular type micro-filtration is 90%, remaining dirty
Mud discharge rate is 5%；The water outlet of tubular type micro-filtration is introduced into reuse water tank in case with phegma is back to return tank, backflow
The reflux ratio of liquid is 4:1.
By the oily waste water of this technique, water outlet oil-containing 4.5mg/L, suspension 0.8mg/L, the μ of suspension median particle size 0.3
M, meets reuse requirement.
More than, preferred embodiment only of the present utility model, but protection domain of the present utility model is not limited thereto, and appoints
What those familiar with the art the change that can readily occur in or replaces in the technical scope that the utility model is disclosed
Change, should all cover within protection domain of the present utility model.Therefore, protection domain of the present utility model should be with claim
The protection domain defined is defined.
Claims (10)
1. a kind of oil field produced water treatment facilities, it is characterised in that including oxidation case, the first Softening box, the second Softening box, micro- wadding
Solidifying case, return tank, micro-filtration, reuse case and sludge delivery pump；
The oxidation case is used to mix oil field extracted water and oxidant, carries out redox processing, the water outlet of the oxidation case
Mouth is connected with the water inlet of the first Softening box by overflow pipe；
First Softening box is used for the oil field extracted water after handling redox and carries out first time sofening treatment；Described first
Softening box is connected with the second Softening box by overfall；
Second Softening box is used to carry out second of sofening treatment to the oil field extracted water after first time sofening treatment；Described
Two Softening boxs are connected with tiny flocculation case by overfall；
The tiny flocculation case is used to carry out tiny flocculation processing, the tiny flocculation case to the oil field extracted water after second of sofening treatment
Delivery port connected with the water inlet of return tank by overflow pipe；
The return tank carries out coagulating treatment after being used for the oil field extracted water after tiny flocculation is handled and phegma mixing；Described time
The delivery port of stream case is connected with the water inlet of the micro-filtration by overflow pipe；
The micro-filtration is used to carry out the oil field extracted water after coagulating treatment micro-filtration processing, and water outlet enters reuse water tank；
The sludge delivery pump is used to remaining sludge in return tank being delivered to sludge treatment equipment.
2. a kind of oil field produced water treatment facilities according to claim 1, it is characterised in that be provided with the oxidation case
NaClO solution throwing devices；The NaClO solution throwing device is used to control NaClO solution dosage to be 20~100mg/L.
3. a kind of oil field produced water treatment facilities according to claim 1, it is characterised in that set in first Softening box
It is equipped with CaO throwing devices or NaOH throwing devices；
The CaO throwing devices are used to control CaO dosages to be 0.01~0.1kg/L；
The NaOH throwing devices are used to control NaOH dosages to be 0.002~0.05kg/L.
4. a kind of oil field produced water treatment facilities according to claim 3, it is characterised in that set in second Softening box
It is equipped with Na2CO3Throwing device；
If setting CaO throwing devices, the Na in the first Softening box2CO3Throwing device is used to control Na2CO3Dosage is
0.025~0.25kg/L；
If setting NaOH throwing devices, the Na in the first Softening box2CO3Throwing device is used to control Na2CO3Dosage is
0.002~0.05kg/L.
5. a kind of oil field produced water treatment facilities according to claim 1, it is characterised in that set in the tiny flocculation case
There are aluminum salt solution or iron salt solutions throwing device；Aluminum salt solution or the iron salt solutions throwing device be used for control aluminum salt solution or
The concentration of iron salt solutions is 2%~20%, and dosage is 2~15L/m3。
6. a kind of oil field produced water treatment facilities according to claim 1, it is characterised in that be provided with the return tank
Polyacrylamide throwing device, the polyacrylamide throwing device be used to controlling the concentration of polyacrylamide for 0.5%~
10%, dosage is 10~50L/m3。
7. a kind of oil field produced water treatment facilities according to claim 1, it is characterised in that the micro-filtration is tubular type
Micro-filtration；The producing water ratio of the tubular type micro-filtration is 90%~99%, and excess sludge discharge rate is 2%~5%.
8. a kind of oil field produced water treatment facilities according to claim 1, it is characterised in that also including reflux ratio controller
And sludge treatment equipment；
The reflux ratio that the reflux ratio controller is used for the phegma of control pipe formula micro-filtration is 3:1~5:1；
The sludge treatment equipment is for the sludge in access return tank and is handled.
9. a kind of oil field produced water treatment facilities according to claim 1, it is characterised in that described pair of oxidation case, first
Agitator is provided with Softening box, the second Softening box, tiny flocculation case, return tank, for being stirred to oil field extracted water.
10. a kind of oil field produced water treatment facilities according to claim 1, it is characterised in that also including timer, be used for
Calculate the time of repose of oil field extracted water after agitator is stopped.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106830444A (en) * | 2017-03-28 | 2017-06-13 | 中冶华天南京工程技术有限公司 | A kind of processing method and processing device of oil field extracted water |
| CN109052753A (en) * | 2018-08-31 | 2018-12-21 | 青岛双瑞海洋环境工程股份有限公司 | Re-injection water treatment system and re-injection method for treating water |
| CN109678275A (en) * | 2019-01-15 | 2019-04-26 | 中国石油天然气集团公司 | Gas production wellhead recovered water water transfer type handles re-injection device and method |
-
2017
- 2017-03-28 CN CN201720310129.1U patent/CN206590995U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106830444A (en) * | 2017-03-28 | 2017-06-13 | 中冶华天南京工程技术有限公司 | A kind of processing method and processing device of oil field extracted water |
| CN109052753A (en) * | 2018-08-31 | 2018-12-21 | 青岛双瑞海洋环境工程股份有限公司 | Re-injection water treatment system and re-injection method for treating water |
| CN109052753B (en) * | 2018-08-31 | 2022-05-06 | 青岛双瑞海洋环境工程股份有限公司 | Reinjection water treatment system and reinjection water treatment method |
| CN109678275A (en) * | 2019-01-15 | 2019-04-26 | 中国石油天然气集团公司 | Gas production wellhead recovered water water transfer type handles re-injection device and method |
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