CN104710064B - A kind of processing method and processing device containing poly- waste liquid and fracturing outlet liquid - Google Patents

A kind of processing method and processing device containing poly- waste liquid and fracturing outlet liquid Download PDF

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CN104710064B
CN104710064B CN201510121407.4A CN201510121407A CN104710064B CN 104710064 B CN104710064 B CN 104710064B CN 201510121407 A CN201510121407 A CN 201510121407A CN 104710064 B CN104710064 B CN 104710064B
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waste liquid
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carbon
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CN104710064A (en
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陈茗
宫传奇
张勇
张余凯
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BEIJING OIL-TECH ENERGY ENVIRONMENTAL PROTECTION ENGINEERING TECHNOLOGY Co Ltd
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BEIJING OIL-TECH ENERGY ENVIRONMENTAL PROTECTION ENGINEERING TECHNOLOGY Co Ltd
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Abstract

The invention discloses a kind of processing method and processing device containing poly- waste liquid and fracturing outlet liquid, following steps are the treating method comprises:1) poly- waste liquid will be contained and fracturing outlet liquid carries out ultrasonic ozone processing;2) waste liquid after ultrasonic ozoneization processing is subjected to catalytic oxidation treatment;3) waste liquid after catalytic oxidation treatment is subjected to coagulation, precipitation and filtration treatment, obtains meeting liquid of the oil field aqueous fracturing fluid with liquid standard and re-injection water quality standard.Described device is mainly sequentially connected and constituted by ultrasonic ozone unit, catalytic oxidation unit, dosing unit and coagulating sedimentation filter element.The processing method is simple, and device is practical, and medicine system is comparatively safe, oil, suspension, other harmful substances in water can be efficiently separated in the case of packless, it is ensured that devil liquor recovery utilization.

Description

A kind of processing method and processing device containing poly- waste liquid and fracturing outlet liquid
Technical field
The present invention relates to the oil gas field difficult degradation liquid waste disposal technique such as oil field, gas field, shale gas field, more particularly to one kind Processing method and processing device containing poly- waste liquid and fracturing outlet liquid.
Background technology
Difficult degradation waste liquid in oil field mainly has drilling fluid, fracturing fluid, containing poly- waste liquid, flushing fluid etc., wherein with fracturing fluid and containing Exemplified by poly- sewage, it is higher that waste liquid is mainly characterized by viscosity, and water-borne glue body granule stability is strong, and natural degradation is difficult;Contain in waste liquid Oil mass is higher, and emulsion stability is strong, and water-oil separating is difficult;Belong to high COD, high concentrtion, " the three high waste water " of high salinity.
For this difficult degradation waste liquid, conventional coagulation-precipitation-filtration treatment technique be difficult reached recovery and Outer row's standard.Therefore, researchers propose new processing method, such as B of patent CN 101993177 disclose a kind of oil field and contained Poly- sewage water treatment method, this method is after polymer-bearing waste-water is degraded through microorganism aerobic, into rear class filtration treatment;Patent CN 103043833 A disclose a kind of electrochemical method handled for polymer-containing sewage in oil field, and this method comprises the following steps:It will treat The polymer-containing sewage in oil field of processing carries out electric flocculation;Polymer-bearing waste-water after electric flocculation is obtained into aqueous phase through water-oil separating;Then The aqueous phase is filtered to the viscosity reduction realized to polymer-containing sewage in oil field;The B of patent CN 103011363 disclose a kind of oil field The processing method of polymer-bearing waste-water, this method comprises the following steps:Block polyether, nonionic table are added into polymer-containing sewage in oil field Face activating agent and ethanol, then carry out that oil removing and water purification can be carried out to polymer-containing sewage in oil field after being well mixed;Patent CN 203513352 U disclose a kind of ozone air-float device for being used to handle polymer flooding oil-polluted water;Patent CN 202542914 U discloses a kind of sewage disinfection treatment device and sewage disinfection treatment device device, including:Water pipe and ultrasonic vibration apparatus;Patent CN 1686851A discloses a kind of new method of disposing polluted water in oil, this method using the iron in water as oxidation catalyst and coagulant, Using hydrogen peroxide as pre-oxidation agent, with active silicic acid series for flocculation aid.But these methods also are difficult to meet actual production need Will.
Application at present is reagent combination reform compared with the wide and obvious method for the treatment of effect, on processing difficult degradation waste liquid excellent opinion into Effect.Although during some chemicals treatment waste liquids, profit is efficiently separated, and harmful substance is removed, peace is also generated Oil gas field adds conventional chemical medicament in full problem and side effect, such as waste liquid preprocessing process:Strong acid and hydrogen peroxide, although can be bright Aobvious reduction waste liquid viscosity, it is ensured that follow-up coagulation, precipitation, can also be imitated by equipment and realize effluent purifying, but both waste liquids belong to In hazardous chemical medicament, especially sulfuric acid, not only have a negative impact to dosing person, also easily cause security incident;In face of remote The processing of well head waste liquid, transport is inconvenient;When the control of strong acid consumption is not tight, equipment corrosion is easily caused.Often make in other oil gas field The medicaments such as compound prescription flocculant, flocculation aid can efficiently separate suspension, oil in waste liquid etc., but the conventional separation of configuration Device, such as walnut shell filter or quartz sand filtration equipment, separate harmful substance and easily block filler, cause equipment to clean and fill out Expect replacement frequency increase;When added amount of chemical control did not easily caused some ion increases of water body at that time, waste liquid directly affects secondary Reuse and re-injection.
The content of the invention
It is an object of the invention to provide a kind of processing method and processing device containing poly- waste liquid and fracturing fluid, the device is simply real With medicine system is comparatively safe, and oil, suspension, other harmful substances in water can be efficiently separated in the case of packless, it is ensured that Devil liquor recovery is utilized.
For up to this purpose, the present invention uses following technical scheme:
On the one hand, the invention provides a kind of processing method containing poly- waste liquid and fracturing outlet liquid, comprise the following steps:
1) poly- waste liquid will be contained and fracturing outlet liquid carries out ultrasonic ozone processing;
2) waste liquid after ultrasonic ozoneization processing is subjected to catalytic oxidation treatment;
3) waste liquid after catalytic oxidation treatment is subjected to coagulation, precipitation and filtration treatment, obtains meeting oil field water-based fracturing Liquid of the liquid with liquid standard and re-injection water quality standard.
Step 1) it is described containing poly- waste liquid and fracturing outlet liquid carry out the time of ultrasonic ozone processing for 50min~ 60min, such as 51min, 53min, 55min, 57min or 58min;The instrument respectively ultrasonic wave that the ultrasonic ozone processing is used Generator and ozone generator;The ultrasonically treated supersonic frequency be not less than 20KHz, such as 23KHz, 25KHz, 28KHz, 33KHz, 40KHz, 60KHz, 80KHz or 100KHz;The radiation depth of the supersonic generator is 1-2m;The ozone is added Measure as 10mg/L~20mg/L, such as 12mg/L, 14mg/L, 16mg/L, 18mg/L or 19mg/L, the ozone is with described containing poly- useless The time of contact of liquid and fracturing outlet liquid is 30min~35min, such as 31min, 32min, 33min or 34min.
The ultrasonic wave of excusing from death wave producer generation high frequency, which makes to contain in poly- waste liquid and fracturing outlet liquid, produces ultrasonic cavitation, plus Cracking and the formation of free radical of the speed containing poly- waste liquid and fracturing outlet liquid, accelerate with ozone to enter containing poly- waste liquid and fracturing outlet liquid Row series of chemical, makes waste liquid viscosity reduce rapidly, oil droplet is more easy to be separated from water.
Step 2) catalyst used in the catalytic oxidation treatment is Carriers Active Pd/carbon catalyst, instrument used is exposes Device of air;The Carriers Active Pd/carbon catalyst selected from Activated Carbon with Cu, carry cobalt activated carbon or carry one kind or extremely in titanium activated carbon Few two kinds mixture;The aerator provides oxygen into the waste liquid, and gas-water ratio is 28~50:1, such as 30:1、32:1、 35:1、38:1、40:1、42:1、45:1 or 48:1.
By the step 2) after processing it is 18~30% containing poly- waste liquid and fracturing outlet liquid its COD content, such as 20%, 22%th, 24%, 26%, 28% or 29%.
The Carriers Active Pd/carbon catalyst is nanometer materials.Activated carbon belongs to multi-pore structure, with very big surface Product, under the blowing that aerator provides oxygen, Carriers Active Pd/carbon catalyst does not stop to seethe, disturbed, and rapidly can have small molecule The absorption of machine thing, retention, and the time of contact of catalyst and organic matter is added, and then the amount of decomposing organic matter is added, effectively Ground reduces the viscosity of waste liquid, COD value is effectively controlled, and COD clearances after treatment are 80% or so.
Step 3) coagulation, precipitation and filtration treatment is add organic polymer coargulator, water purification agent to the waste liquid And flocculation aid;The organic polymer coargulator is selected from Amino-methylated Polyacrylamide, poly dimethyl allyl ammonium chloride, height Molecular polypropylene acid amides, acrylamide and dimethylaminoethyl acrylate methyl ammonia methacrylate copolymers, partial hydrolysis polyacrylamide, polypropylene One kind or at least two mixture in sour sodium or amphoteric ion high polymer flocculant;The water purification agent is that the water purification agent is Nanostructured, selected from OTC-A and/or OTC-B;The flocculation aid is selected from bentonite, sodium alginate, polyacrylamide, cation Type polyacrylamide or one kind or at least two mixture in anionic polyacrylamide;The organic polymer flocculation The dosage of agent be 60~80mg/L, such as 62mg/L, 64mg/L, 66mg/L, 68mg/L, 70mg/L, 72mg/L, 74mg/L, 76mg/L or 78mg/L, the dosage of water purification agent is 50~80mg/L, such as 55mg/L, 60mg/L, 65mg/L, 70mg/L, 74mg/ L, 76mg/L or 78mg/L, flocculation aid dosage are 0.5~1mg/L, such as 0.6mg/L, 0.7mg/L, 0.8mg/L or 0.9mg/L.
The organic polymer coargulator, water purification agent and flocculation aid differ from one another.Water purification agent is preferably to use nanostructured Material, diffusion and dispersiveness are strong, and proportion is moderate, and absorption and charge neutrality effect are good, can replace the coagulant and flocculant two of routine Medicament is planted, conventional cost of water treatment is reduced;Flocculant be preferably after Amino-methylated Polyacrylamide, curing solution carry band glue Volume charge, there is extremely strong absorption and charge neutrality to the suspension in water;Flocculation aid is preferably modified polyacrylamide, and it has Strong bridging action, becomes close and big alumen ustum, and then improve mud-water separation effect by tiny scattered flco.
With fully reacted poly- waste liquid and the fracturing outlet liquid of containing of catalytic oxidant by coagulation, precipitation and filtration treatment, The harmful substances such as oil, suspension realize separation of solid and liquid, can reach that oil field is water base containing poly- waste liquid and fracturing outlet liquid after processing Fracturing fluid matches somebody with somebody liquid standard and re-injection water quality standard.
On the other hand, the dress containing poly- waste liquid and fracturing outlet liquid is handled using method as described above the invention provides a kind of Put, be sequentially connected and constituted by ultrasonic ozone unit, catalytic oxidation unit, dosing unit and coagulation-precipitation-filter element.
The ultrasonic ozone unit is mainly made up of supersonic generator, ozone generator and sewage reaction tank, described Supersonic generator is placed in outside sewage reaction tank, and the ozone generator is placed in the sewage reaction tank bottom.
The catalytic oxidation unit is mainly made up of multimedium activated-carbon device and aerator, the multimedium activated carbon Carriers Active Pd/carbon catalyst is fixed with device, the aerator is placed in the multimedium activated-carbon device bottom.It is described many Medium activated-carbon device is fixedly arranged in the middle of net, the net apart from aerator 100mm~200mm, such as 110mm, 120mm, 130mm, 140mm, 150mm, 160mm, 170mm, 180mm or 190mm, the Carriers Active Pd/carbon catalyst are placed on the net, described The compactedness of Carriers Active Pd/carbon catalyst be the multimedium activated-carbon device 60%~70%, such as 62%, 64%, 65%, 66%th, 67% or 69%, the aeration head of the aerator is fixed on the bottom of the net.
Coagulation-precipitation-the filter element is mainly made up of coagulation-Filtration-Precipitation integrated apparatus.Coagulation-the mistake Filter-sedimentation integrated device uses the oil-containing sewage purifying device disclosed in patent CN 200720169462.19.
The dosing unit is mainly made up of chemicals dosing plant and pipe-line mixer.The chemicals dosing plant contains poly- waste liquid described With fracturing outlet liquid enter coagulation-Filtration-Precipitation integrated apparatus before add thereto organic polymer coargulator, water purification agent and Flocculation aid.
Being entered containing poly- waste liquid and fracturing outlet liquid by tank base after coagulation-Filtration-Precipitation integrated apparatus after dosing, Suspended sludge layer can be formed.It is theoretical according to Stokes laws and orthokinetic coagulation, due in coagulation-Filtration-Precipitation integrated apparatus The special tectonic of component, water (flow) direction changes a lot, and causes stronger turbulent fluctuation.At this moment row is returned containing poly- waste liquid and pressure break Remaining suspended particulate in liquid is in the early stage hybrid reaction stage, and turbulent fluctuation is beneficial to hybrid reaction, with follow-up flocculation not Disconnected to carry out, suspended particulate is increasing.The flocculation process of suspension is to later stage flocculated stage, and the adverse effect of turbulent fluctuation is also more next Bigger, the requirement with flocculation process is adapted, and at this moment mixed liquor flowing through component is bent, and flow velocity is substantially reduced, and flowing starts to become In mitigation.Therefore in the very little bottom of separation of solid and liquid component bottom, flocculation has been basically completed, that is, completes coagulation mistake Journey.
Constituted in itself due to the flco that this suspended sludge layer is formed by the sludge and coagulated agent in sewage.Formed Dynamic equilibrium of filtration system.It is embodied in:As flco is moved from bottom to top, the layer of mud layer is set to be continuously increased, become Thickness, meanwhile, flowed as sludge condensation room primary water is bypassed, the upper epidermis that guide suspension mud layer constantly flows into center and grafted clay Bucket, upper epidermis constantly reduces, thinning.So, the thickness of suspension mud layer reaches a dynamic balance, completes filtering, precipitation Process.When the water outlet after coagulation passes through this suspension mud layer from bottom to top, this flco filtering layer is by surface physicses absorption, the net effect of catching With the effect of electrochemical properties and Van der Waals force, suspension colloid particle, flco, part microorganism etc. impurity are intercepted herein On suspension mud layer, effluent quality is set to reach processing requirement, i.e. " oil≤8mg/L, SS≤3mg/L, median particle size≤2 μm ".Suspend Sludge purifier according to the change of water quality of leading portion water, can adjust the consumption of medicament, it is ensured that effluent quality is up to standard.
It can match somebody with somebody liquid, its normative reference again containing poly- waste liquid and fracturing outlet liquid after the method for the invention and device processing For《Aqueous fracturing fluid method of evaluating performance》SY/T 5107-2005;Reinjection standard is referred to《SYT 5329-1994 chip shale oils Hide injection water quality fertilizer index and analysis method》That is " oil≤8mg/L, SS≤3mg/L, median particle size≤2 μm ".
Compared with prior art, beneficial effects of the present invention are:
What the 1st, the present invention was provided is simple containing poly- waste liquid and fracturing outlet liquid processing method, and operating cost is low, equipment processing and Convenient transportation, is not limited by water and field condition, practical;
2nd, the non-recoil during disposing waste liquid containing poly- waste liquid and fracturing outlet liquid processing unit that the present invention is provided is washed, and is mixed Solidifying-Filtration-Precipitation integrated apparatus no-arbitrary pricing is changed, and equipment impact resistance ability is strong, and repair rate is low, stable effluent quality;
What the 3rd, the present invention was provided meet that scene is secondary containing poly- waste liquid and fracturing outlet liquid processing unit effluent quality will with liquid Ask, the transport of the fresh water at the scene of having saved, realize effluent resource utilization.
Brief description of the drawings
Fig. 1 is the offer of the specific embodiment of the invention 1 containing poly- waste liquid and fracturing outlet liquid processing unit schematic diagram.
Wherein:1, elevator pump;2, sewage reaction tank;3, multimedium activated-carbon device;4, two-stage hoisting pump;5, pipeline mixing Device;6, coagulation-Filtration-Precipitation integrated apparatus;7, aerator;8, ozone generator;9, supersonic generator;10, oil storage Device;11, chemicals dosing plant.
Embodiment
Further illustrate technical scheme below in conjunction with the accompanying drawings and by embodiment.
Embodiment 1
As shown in figure 1, containing poly- waste liquid and fracturing outlet liquid processing unit schematic diagram for what the present embodiment was provided.Can from figure To find out, the processing unit is by elevator pump 1, supersonic generator 9, ozone generator 8, sewage reaction tank 2, multimedium activity Charcoal device 3, aerator 7, two-stage hoisting pump 4, pipe-line mixer 5, chemicals dosing plant 11 and coagulation-Filtration-Precipitation are integrally disguised 6 compositions are put, the sewage reaction tank 2, multimedium activated-carbon device 3 and coagulation-Filtration-Precipitation integrated apparatus 6 pass through pipeline It is sequentially connected, the supersonic generator 9 is placed in by sewage reaction tank 2, the ozone generator 8 is placed in the sewage reaction tank In 2, Carriers Active Pd/carbon catalyst is fixed with the multimedium activated-carbon device 3, the aerator 7 is placed in the multimedium The bottom of activated-carbon device 3, the chemicals dosing plant 11 is placed in by the coagulation-Filtration-Precipitation integrated apparatus 6.The sewage is anti- Answer pond 2 to be set close to Fuel Tanking Unit 10, priming apparatus and elevator pump 1 are additionally provided with by the sewage reaction tank 2, for mending thereto Enter water.It is provided with the multimedium activated-carbon device 3 between two layers of mesh, net and places Carriers Active Pd/carbon catalyst, close to bottom of pond The bottom of net is provided with aeration head, for blowing the carrier active carbon between net.In the multimedium activated-carbon device 3 and described mixed Chemicals dosing plant 11, two-stage hoisting pump 4 and pipe-line mixer 5, the dosing dress are provided between solidifying-Filtration-Precipitation integrated apparatus 6 Put 11 and pipe-line mixer 5 be used for after catalytic oxidation treatment containing adding and uniformly mix in poly- waste water and fracturing outlet liquid Close organic polymer coargulator, water purification agent and flocculation aid, the two-stage hoisting pump 4 is used for containing poly- waste water and pressure after dosing Split and return discharge opeing and be pumped into coagulation-Filtration-Precipitation integrated apparatus 6.
Embodiment 2
Processing unit is as described in Example 1.
Fracturing fluid treatment amount 1m3/ h, influent quality:48 DEG C of water temperature, pH=8.6, oil content is 532mg/L, and COD is 4562mg/L, suspension is:611mg/L.Processing method specifically, in sewage reaction tank ultrasonic frequency control in 23kHz, it is smelly Oxygen dosage is 12mg/L, and the residence time is 30min;Catalyst (Activated Carbon with Cu) dosage of multimedium activated-carbon device is 0.6m3, aeration control is in gas-water ratio 32:1.Coagulation-precipitation-filtering integral device front end added amount of chemical is:Organic high score Sub- flocculant (high polymer polyacrylamide) is that 80mg/L, water purification agent (OTC-A) are 65mg/L, flocculation aid (cationic poly third Dilute acid amides) it is 0.5mg/L.The device working time is 52min.Water outlet reaches《Aqueous fracturing fluid method of evaluating performance》(SY/ T5107-2005 standard).
From These parameters it can be seen that:Influence has obtained effective reduction with liquid principal element COD value, and oil and suspension are obtained Effective removal.
Water outlet secondary fracturing is following (high spot review base fluid viscosity and frozen glue temperature resistance shearing property) with liquid Testing index:
At normal temperatures using six fast rotation viscometer 170s1Shearing, base fluid viscosity=62mPa.s;At 65 DEG C, 170s1Cut Cut, base fluid viscosity=150mPa.s, the working time is 95min, meet with liquid requirement.
Embodiment 3
Processing unit is as described in Example 1.
Polymer-bearing waste-water treating capacity 1m3/ h, influent quality:45 DEG C of water temperature, pH=8.9, oil content is 567mg/L, and COD is 5279mg/L, suspension is:598mg/L.Processing method specifically, in sewage reaction tank ultrasonic frequency control in 25kHz, it is smelly Oxygen dosage is 14.5mg/L, and the residence time is 30min;The dosage of load cobalt activated carbon is in multimedium activated-carbon device 0.65m3, aeration control is in gas-water ratio 35:1.Coagulation-precipitation-filtering integral device front end added amount of chemical is:Organic high score Sub- flocculant (acrylamide and dimethylaminoethyl acrylate methyl ammonia methacrylate copolymers) be 75mg/L, water purification agent (OTC-B) be 55mg/L, Flocculation aid (anionic polyacrylamide) is 1mg/L.The device working time is 48min.Water outlet reaches that SYT 5329-2012 are broken Consider shale oil to be worth doing and hide injection water quality fertilizer index and analysis method》That is the mark of " oil≤8mg/L, SS≤3mg/L, median particle size≤2 μm " It is accurate.
From These parameters it can be seen that:Ca, oil and suspension are effectively removed.Median particle size is 0.8 μm.After explanation processing Polymer-bearing waste-water and fracturing outlet liquid can reach reinjection standard.
Embodiment 4
Fracturing fluid treatment amount 1m3/ h, influent quality:45 DEG C of water temperature, pH=7.9, oil content is 479mg/L, and COD is 4392mg/L, suspension is:471mg/L.Processing method specifically, in sewage reaction tank ultrasonic frequency control in 32kHz, it is smelly Oxygen dosage is 10mg/L, and the residence time is 30min;Catalyst (carry titanium activated carbon) dosage of multimedium activated-carbon device is 0.6m3, aeration control is in gas-water ratio 28:1.Coagulation-precipitation-filtering integral device front end added amount of chemical is:Macromolecule is wadded a quilt with cotton Solidifying agent (poly dimethyl allyl ammonium chloride) is that 60mg/L, water purification agent (OTC-A) are 50mg/L, flocculation aid (polyacrylamide) For 0.5mg/L.The device working time is 58min.Water outlet reaches《Aqueous fracturing fluid method of evaluating performance》(SY/T 5107- 2005) standard.
From These parameters it can be seen that:Influence has obtained effective reduction with liquid principal element COD value, and oil and suspension are obtained Effective removal.
Water outlet secondary fracturing is following (high spot review base fluid viscosity and frozen glue temperature resistance shearing property) with liquid Testing index:
At normal temperatures using six fast rotation viscometer 170s1Shearing, base fluid viscosity=65mPa.s;At 65 DEG C, 170s1Cut Cut, base fluid viscosity=145mPa.s, the working time is 100min, meet with liquid requirement.
Embodiment 5
Polymer-bearing waste-water treating capacity 2.5m3/ h, influent quality:52 DEG C of water temperature, pH=9.2, oil content is 678mg/L, and COD is 4925mg/L, suspension is:632mg/L.Processing method specifically, in sewage reaction tank ultrasonic frequency control in 25kHz, it is smelly Oxygen dosage is 20mg/L, and the residence time is 35min;The dosage of multimedium activated-carbon device Activated Carbon with Cu is 0.65m3, Aeration control is in gas-water ratio 50:1.Coagulation-precipitation-filtering integral device front end added amount of chemical is:High polymer coagulant (amine Methylate polyacrylamide) it is that 80mg/L, water purification agent (OTC-A) are that 50mg/L, flocculation aid (anionic polyacrylamide) are 0.8mg/L.The device working time is 60min.Water outlet reach SYT 5329-2012 clastic rocks reservoir water water quality fertilizer indexes and Analysis method》That is the standard of " oil≤8mg/L, SS≤3mg/L, median particle size≤2 μm ".
From These parameters it can be seen that:Ca, oil and suspension are effectively removed.Median particle size is 1.12 μm.After explanation processing Polymer-bearing waste-water and fracturing outlet liquid can reach reinjection standard.
Water outlet secondary fracturing is following (high spot review base fluid viscosity and frozen glue temperature resistance shearing property) with liquid Testing index:
At normal temperatures using six fast rotation viscometer 170s1 shearings, base fluid viscosity=68mPa.s;At 65 DEG C, 170s1 Shearing, base fluid viscosity=162mPa.s, the working time is 100min, is met with liquid requirement.
Applicant states that the present invention illustrates the method detailed of the present invention, but not office of the invention by above-described embodiment It is limited to above-mentioned method detailed, that is, does not mean that the present invention has to rely on above-mentioned method detailed and could implemented.Art Technical staff it will be clearly understood that any improvement in the present invention, equivalence replacement and auxiliary element to each raw material of product of the present invention Addition, selection of concrete mode etc., within the scope of all falling within protection scope of the present invention and being open.

Claims (9)

1. a kind of processing method containing poly- waste liquid and fracturing outlet liquid, it is characterised in that comprise the following steps:
1) poly- waste liquid and fracturing outlet liquid will be contained and carry out ultrasonic ozone processing, time of ultrasonic ozoneization processing for 50min~ 60min, the ozone dosage is 10mg/L~20mg/L, and the ozone with being containing poly- waste liquid and fracturing outlet liquid time of contact 30min~35min;
2) waste liquid after ultrasonic ozoneization processing is subjected to catalytic oxidation treatment, the catalyst that the catalytic oxidation treatment is used is Carriers Active Pd/carbon catalyst, device used is aerator, and the aerator provides oxygen, gas-water ratio into the waste liquid For 28~50:1;
3) waste liquid after catalytic oxidation treatment is subjected to coagulation, precipitation and filtration treatment, obtains meeting oil field aqueous fracturing fluid and match somebody with somebody The liquid of liquid standard and re-injection water quality standard, the coagulation, precipitation and filtration treatment are to add organic polymer wadding to the waste liquid Solidifying agent, water purification agent and flocculation aid, the organic polymer coargulator, water purification agent and flocculation aid dosage are respectively:60~80mg/ L, 50~80mg/L, 0.5~1mg/L.
2. processing method according to claim 1, it is characterised in that step 1) instrument that uses of the ultrasonic ozone processing For supersonic generator and ozone generator.
3. processing method according to claim 1, it is characterised in that the frequency of the supersonic generator be not less than 20KHz, the radiation depth of the supersonic generator is 1-2m.
4. processing method according to claim 1, it is characterised in that step 2) the Carriers Active Pd/carbon catalyst is selected from and carries Copper activity charcoal, load cobalt activated carbon or one kind or at least two mixture in load titanium activated carbon.
5. processing method according to claim 1, it is characterised in that step 3) organic polymer coargulator is selected from amine Methylate polyacrylamide, poly dimethyl allyl ammonium chloride, high polymer polyacrylamide, acrylamide and methacrylic acid One kind in diformazan ammonia methacrylate copolymers, partial hydrolysis polyacrylamide, Sodium Polyacrylate or amphoteric ion high polymer flocculant Or at least two mixture;
The flocculation aid is selected from bentonite, sodium alginate, polyacrylamide, cationic polyacrylamide or anionic poly- third One kind or at least two mixture in dilute acid amides.
6. a kind of device of one of the utilization claim 1-5 methods described processing containing poly- waste liquid and fracturing outlet liquid, its feature exists In being sequentially connected and constituted by ultrasonic ozone unit, catalytic oxidation unit, dosing unit and coagulation-precipitation-filter element;Institute Catalytic oxidation unit is stated mainly to be made up of multimedium activated-carbon device and aerator, it is fixed in the multimedium activated-carbon device There is Carriers Active Pd/carbon catalyst, the aerator is placed in the multimedium activated-carbon device bottom;The multimedium activated carbon Device is fixedly arranged in the middle of net, and the net is placed on the net apart from aerator 100mm~200mm, the Carriers Active Pd/carbon catalyst, The compactedness of the Carriers Active Pd/carbon catalyst is the 60%~70% of the multimedium activated-carbon device, the aerator Aeration head is fixed on the bottom of the net.
7. device according to claim 6, it is characterised in that the ultrasonic ozone unit is mainly occurred by ultrasonic wave Device, ozone generator and sewage reaction tank composition, the supersonic generator are placed in outside sewage reaction tank, and the ozone occurs Device is placed in the sewage reaction tank bottom.
8. device according to claim 6, it is characterised in that the coagulation-precipitation-filter element is mainly by coagulation-mistake Filter-sedimentation integrated device composition.
9. device according to claim 6, it is characterised in that the dosing unit is main to be mixed by chemicals dosing plant and pipeline Device is constituted.
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