CN106277614A - A kind of processing method of reuse condensed oil sewage - Google Patents
A kind of processing method of reuse condensed oil sewage Download PDFInfo
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- CN106277614A CN106277614A CN201610764570.7A CN201610764570A CN106277614A CN 106277614 A CN106277614 A CN 106277614A CN 201610764570 A CN201610764570 A CN 201610764570A CN 106277614 A CN106277614 A CN 106277614A
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- C02F9/00—Multistage treatment of water, waste water or sewage
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- C02F1/24—Treatment of water, waste water, or sewage by flotation
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- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
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- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
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- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
- C02F1/4693—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electrodialysis
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- C02F1/5281—Installations for water purification using chemical agents
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- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
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- C02F2003/001—Biological treatment of water, waste water, or sewage using granular carriers or supports for the microorganisms
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Abstract
The processing method of a kind of reuse condensed oil sewage, processing step is: thick-oil waste water passes sequentially through sedimentation device, air supporting or Bi-stage air floater, biofilm reactor, oxidation enhanced biological reactor, ultrafiltration apparatus, second level reverse osmosis apparatus, continuous electric desalination device.
Description
Technical field
The present invention relates to field of oilfield sewage treatment, particularly to the processing method of a kind of reuse condensed oil sewage.
Background technology
In oil extraction process, water can be deviate from from oil by water with oil extraction, dehydration device, through dehydration device
The water separated is oilfield produced water (Produced Water), or " oil field extracted water ".According to the position residing for oil field
Putting, recovered water can be subdivided into land (Offshore) oil extraction-generated waste water and marine (Onshore) oil extraction-generated waste water.According to oil property
Difference, oil extraction-generated waste water can be divided into again condensed oil sewage, light oil sewage and height to coagulate oily water etc..
Condensed oil sewage refers to the sewage produced during heavy crude heat extraction, mainly includes sewage and steam that heat extraction by steam injection produces
Handle up produce sewage.Heavy crude heat extraction output oil mass is usually 0.3～0.6 with the ratio of steam injection amount, and i.e. every extraction one ton oil needs
Inject steam 3.3～7.7 tons, by 1,000,000 tons of AOF calculation, annual boiler feed water water requirement 330～7,700,000 tons, this part water
All with the form output of oil-polluted water, and carry a large amount of heat energy.Condensed oil sewage has dissolved stratum in the oil reservoir of High Temperature High Pressure
In various salts and gas, oil recovery process carries again from oil reservoir many suspended solids, during oil-gas gathering and transportation
It is doped into all kinds of chemical agent, and condensed oil sewage also can contain substantial amounts of dissolved organic matter.Therefore, existing reuse is thick
Oily sewage disposal method is usually present problems with:
1. the profit density contrast of condensed oil sewage is little.Under normal circumstances, viscous crude density is at 900kg/m3Above, profit density contrast
Less than 100kg/m3.Therefore, gravity oil-removing difficulty is the biggest.
2. condensed oil sewage has bigger viscosity.Due to the colloid in viscous crude, asphalt content height so that viscosity of thickened oil
The highest.Due to the existence of resin and asphalt in condensed oil sewage, show bigger viscosity.
3. condensed oil sewage is easily formed the oil-in-water emulsion centered by small elaioleucite.Due to the colloid in viscous crude and drip
Blue or green matter has natural emulsification so that condensed oil sewage emulsifying is more serious.The existence of emulsion so that oil droplet coalescence is stranded
Difficulty, " coarse " difficulty is big, thus increases the difficulty of oil removing further.
4. condensed oil sewage biodegradability is low, needs to add various chemical agent, and chemistry in exploitation and oil water separation process
Medicament to add kind, character and number change very big, and major part is bio-refractory, and these organic substance residues are useless
In water, process to waste water and bring difficulty.
5. condensed oil sewage has higher temperature.Through the viscous crude that steam heating power is mined, arrive the temperature one on earth's surface
As more than 70 DEG C, the sewage temperature thus deviate from is the highest.
Chinese patent CN103936185A discloses a kind of super-viscous oil high temperature waste water treating and reutilizing in the method for thermal recovery boiler；
Chinese patent CN203845890U discloses a kind of condensed oil sewage reuse injection boiler processing system.
Owing to viscous crude density is high, viscosity is big, resin and asphalt content is high, cause crude oil little with the density variation of water；Glue
Matter and asphalitine have natural emulsified character, and in feedwater, oil droplet cohesion is more difficult；The viscosity of crude being separated from the water out is high, stream
Dynamic property is poor, also results in difficulty to crude oil recovery.Therefore the process of condensed oil sewage is relatively difficult.
Summary of the invention
In order to solve problem of the prior art, the present invention provides the processing method of a kind of reuse condensed oil sewage, and its feature exists
In, processing step is: thick-oil waste water passes sequentially through sedimentation device, air supporting or Bi-stage air floater, biofilm reactor, oxidation
Enhanced biological reactor, ultrafiltration apparatus, second level reverse osmosis apparatus, continuous electric desalination device, described Bi-stage air floater is twin-stage
Dissolved air flotation device.
In some embodiments, described sedimentation device is coagulant precipitation device.
In some embodiments, filler used by described biofilm reactor is MCM micropore composite gap biological ball.
In some embodiments, described MCM micropore composite gap biological ball by a netted shell of rigid plastics and fills
Fill out microporous medium block therein composition.
In some embodiments, described biofilm reactor uses two grades of coupling techniques.
In some embodiments, described biofilm reactor is provided with 4 dividing plates, from water inlet to outlet
On direction, being provided with, bottom the 1st, 2,3 dividing plates, the space that can pass water through, the bottom of the 4th dividing plate can not pass water through.
In some embodiments, described biofilm reactor is separated into five spaces by 4 dividing plates, from water inlet to
On the direction of outlet, the bottom in second space and the 4th space is provided with aerator.
In some embodiments, described oxidation enhanced biological reactor has 1-3 set, the often reaction of set oxidation enhanced biological
Device includes 1 set ozone reactor and 1 set charcoal reactor.
In some embodiments, described ultrafiltration apparatus is external-compression type ultrafiltration apparatus.
In some embodiments, in described ultrafiltration apparatus, the film silk internal diameter of ultrafiltration membrane material is 0.5-1.0mm, and external diameter is
1.0-2.0mm。
The processing method of the reuse condensed oil sewage that the present invention provides is greatly improved sewage treating efficiency, strengthens degraded organic
The microbial activity of mud, lowers mud generation amount effectively.The method is particularly well-suited to the removal of hardly degraded organic substance.
Accompanying drawing explanation
Fig. 1 is the processing method schematic diagram of reuse condensed oil sewage of the present invention；
Fig. 2 be reuse condensed oil sewage of the present invention processing method in two grades of coupling schematic diagrams of biofilm reactor；
In figure: 1-sedimentation device, 2-air-floating apparatus, 3-biofilm reactor, 31-composite gap biological ball, 321-dividing plate,
322-dividing plate, 323-dividing plate, 324-dividing plate, 331-space, 332-space, 333-space, 334-space, 335-space, 341-
Aerator, 342-aerator, 35-water inlet, 36-outlet, 4-aoxidizes enhanced biological reactor, and 411-the first ozone is sent out
Raw device, 412-the first ozone reactor, 413-the first charcoal reactor, 414-the second ozonator, 415-the second ozone
Reactor, 416-the second charcoal reactor, 5-ultrafiltration apparatus, 6-second level reverse osmosis apparatus, 61-the first reverse osmosis unit, 62-
Second reverse osmosis unit, 7-continuous electric desalination device.
Detailed description of the invention
Unless otherwise defined, all technology used herein and scientific terminology have skill common with art of the present invention
The identical implication that art personnel are generally understood that.When there is contradiction, it is as the criterion with the definition in this specification.
Quality, concentration, temperature, time or other value or parameter are preferred with scope, preferred scope or a series of upper limit
During the Range Representation that value and lower preferable values limit, this is appreciated that and specifically discloses by any range limit or preferred value
All scopes that arbitrary pairing with any range lower limit or preferred value is formed, regardless of whether whether this scope separately discloses.
Such as, the scope of 1-50 be understood to include selected from 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,
19、20、21、22、23、24、25、26、27、28、29、30、31、32、33、34、35、36、37、38、39、40、41、42、43、
44, any numeral, number combinatorics on words or the subrange and all between above-mentioned integer of 45,46,47,48,49 or 50
Fractional value, such as, 1.1,1.2,1.3,1.4,1.5,1.6,1.7,1.8 and 1.9.About subrange, specifically consider from scope
Interior any end points starts " the nested subrange " extended.Such as, the nested subrange of exemplary range 1-50 can include
1-10,1-20,1-30 and 1-40 on one direction, or 50-40,50-30,50-20 and the 50-10 on other direction.
As it is shown in figure 1, the processing method of a kind of reuse condensed oil sewage, processing step is: it is heavy to be passed sequentially through by thick-oil waste water
Falling unit 1, air supporting or Bi-stage air floater 2, biofilm reactor 3, oxidation enhanced biological reactor 4, ultrafiltration apparatus 5, two grades
Reverse osmosis unit 6, continuous electric desalination device 7.
Sedimentation device
The first step of the processing method of the reuse condensed oil sewage that the present invention provides is that condensed oil sewage is passed through sedimentation device.Existing
Have technology generally use settling methods, gravitational settling mechanism be according to oil, water is biphase there is density contrast, under gravity,
Through certain time, oil water mixture can be automatically separated.Reasonably the time of staying of the Hydraulic Design and sewage is to affect oil removing effect
Two key factors of rate, to a certain extent, the time of staying is the longest, and treatment effect is the best.Gravitational settling oil removing includes nature
The methods such as sedimentation oil removing, swash plate oil removing, oil and water separation bygranulation, the leading portion for oil extraction-generated waste water processes.Its representative processes flow process is i.e.:
Natural subsidence → coagulant precipitation → filtration.The present invention uses the effect of sedimentation device to be not only and makes impurity be separated from water, also prevent
Pollutant disrupting biofilm reactor in sewage.Sedimentation device used in the present invention is preferably coagulant precipitation device.Viscous crude
Sewage does not contain only substantial amounts of cation such as Na+、K+、Ca2+、Mg2+、Ba2+、Sr2+、Fe2+Deng and anion such as Cl-、SO4 2-、
CO3 2-、HCO3 -Deng, they can affect the buffer capacity of condensed oil sewage, salinity and fouling tendency, but also containing a small amount of not
Same heavy metal compound, such as Cr, Cu, Pb, Hg, Ni, Ag and Zn etc..Additionally possibly together with the radiation of trace in some condensed oil sewage
Property chemical substance such as K40, U238, Th232, Ra226.Radium can be with calcium, barium, strontium plasma coprecipitated formation carbonate and sulfate scale.
Inventor finds, adds magnesium chloride and alkali in sedimentation device, it is possible to effectively removes the silicon in sewage, and sinks at described coagulation
Falling unit running adds mucoitin sulfate, the impurity in sewage can not only be removed, it is also possible to protect follow-up biomembrane
Reactor and ultrafiltration apparatus, make ultrafiltration apparatus can play its superior function removing oil removal, can ensure subsequent film system simultaneously
System runs.
Air supporting or Bi-stage air floater
Air flotation technology be by that pending water is passed through or manage produce a large amount of micro air bubbles be carrier, when in sewage
Oil droplet and impurity wadding grain and bubble when adhering to each other, just form the global density grain group less than water, the buoyancy of grain group is more than weight
Power and resistance make it float up to the water surface, thus complete the water purification that in water, solid separates with liquid with liquid, liquid with solid, solid
Technology.
According to microbubble produce mode, common air floating water purification technology mainly include dissolved air flotation, dissipate gas air supporting method,
Electrolytic gas float glass process, chemical floatation treatment and other air flotation technology.
Dissolved air flotation is to be passed through air in water under a certain pressure to be allowed to dissolve and reach saturation, makes the most again
Wastewater pressure reduces suddenly, and the air being at this moment dissolved in the water just discharges from water with the form of microbubble, to carry out gas
Floating waste water processes.Mainly include pressure air-dissolving method and vacuum air soluble method.Wherein, the former bubble is uniform, simple to operate, oil removal rate relatively
Height, but equipment needed thereby is huge, flow process is complicated.The latter's bubble floating is stable, floccule body is difficult to dispersion, but this method molten narrow-minded,
It is difficult to operation, device structure complexity.
Dissipating gas air supporting method is that compressed air is passed directly into micropore, diffuser plate, microporous pipe generation microbubble, or uses water pump
Suction hose, hydraulic ejector, quick runner etc. produce microbubble to Aeration in the water.Mainly include machinery air-blowing air supporting, impeller gas
Floating, jet air float.Wherein, jet air float method is the new method processing oilfield sewage, and technique is simple, bubble is little and uniform, oil removing
Rate is higher than turbine air flotation method, but the highest to equipment requirements.The bubble that turbine air flotation produces is uneven, in addition, and its molten gas
Amount is big, the time of staying is short, low cost, is more widely applied.
Electrolytic gas float glass process is to be passed through certain electric current in waste water, and Wastewater by Electric solves H2、O2And CO2Adsorb Deng micro-bubble
In waste water, small float floats, to reach the purpose of water purification.Although the bubble of electrolysis is little, oil removal rate is high, but its power consumption is very
Greatly, relatively costly, be not suitable for large-scale application.
Pneumatically supported overall process includes that the generation of microbubble, bubble divide with oil droplet with adhesion, the bubble of oil droplet (floccules)
From 3 stages.High performance gas dissolver and release ensure that the uniform and abundant microbubble needed for generation, bubble with
Can oil droplet good adhesion be the key of air supporting process, and it decides air flotation effect, and the Oil-gas Separation stage then needs Slag Scraping Device
Run.Therefore, the good method producing bubble is a condition of air-flotation process, if above-mentioned each stage running has very much
Effect, then final air flotation effect and oil removal rate can be the highest.
Air-floating apparatus for the present invention can be one-level air-floating apparatus, it is also possible to be Bi-stage air floater.Described one-level
Air-floating apparatus is preferably dissolved air flotation device.Described Bi-stage air floater is preferably twin-stage dissolved air flotation device.
Biofilm reactor
Condensed oil sewage is after precipitation reactor, by air supporting or Bi-stage air floater, enters biofilm reactor.Biological
Membrane reactor is to add various filler in the reactor so that attached growth of microorganisms, belongs to a kind of fixing embrane method, is mainly used in
Remove deliquescent in waste water and the organic pollution of colloidal.Biomembrane is by the aerobic bacteria of highly dense, anaerobe, facultative
The ecosystem of the composition such as bacterium, fungus, protozoacide and algae, the solid dielectric of its attachment is referred to as filtrate or carrier.Biological
Film outwards can be divided into anaerobic layer, aerobic layer, attachment water layer, motion water layer from filtrate.The principle of biomembrance process is, biomembrane is first
Absorption attachment water layer Organic substance, is decomposed by the aerobic bacteria of aerobic layer, enters back into lonely layer and carries out anaerobic digestion, and flow water layer
Aging biomembrane then washes out to grow new biomembrane, and so forth to reach to purify the purpose of sewage.Biomembrane reaction
The step of device process condensed oil sewage can be divided into biomembranous formation, maturation, update and come off these steps.Biofilm formation
Precondition be intended to passive carrier, also referred to as filler or filtrate.Also need to Organic substance, N, P and other
Nutrient substance.Sewage containing nutrient substance and microbe inoculation is in the Surface runoff of filler, and after certain time, microbes is attached
In filling surface propagation and growth, form one layer of thin biomembrane.
In the biomembranous maturation period, the ecosystem that biomembrane is made up of antibacterial and other various microorganisms and life
Thing film has all reached balance and has stablized organic degradation function；In this stage, microorganism highly dense, these microorganisms rise
The effect of the organic pollution removed in waste water, define organic pollution-antibacterial-protozoacide food chain.
Biomembranous renewal includes the appearance of anaerobic membrane, the thickening of anaerobic membrane, biomembranous renewal with coming off.Anaerobic membrane
During appearance, biofilm thickness is continuously increased, and the Proof deep inside of oxygen translates into anaerobic state.Ripe life
Thing film is typically all made up of anaerobic membrane and aerobic film, and aerobic film is the main place of organic matter degradation, and general thickness is 2mm.
During the thickening of anaerobic membrane, the metabolite of anaerobism increases, and causes the balance between anaerobic membrane and aerobic film to be destroyed.Gaseous state
The continuous effusion of product, reduces biomembrane adhesive ability on filler.Eventually becoming aging biomembrane, its purification function is relatively
Difference, and be prone to come off.In biomembranous renewal process, aging film comes off, and newborn biomembrane can grow again, newborn biomembrane
Purification function stronger.
Organic pollution in oil production waste water in oil field some be belonging to be difficult to biodegradable multiring aromatic hydrocarbon high score
Sub-material, utilizes anaerobic treatment to make the complicated Organic substance of some in waste water be hydrolyzed under anaerobe effect and ferment, converts
For the simple organic being readily biodegradable, so that biodegradability is improved, provide condition for subsequent treatment, and remove one
The S of part2-.In the process of oil field extracted water, anaerobic treatment is often as the preprocessing means of Aerobic Process for Treatment.
Biofilm reactor of the present invention is MCM fixed bed carrier biofilm reactor.
In the present invention, filler used by biofilm reactor is MCM micropore composite gap biological ball.
MCM technology processes at running water by disposal of depth (except COD and ammonia nitrogen), regeneration effluent, high concentration organic sewage, difficult fall
Solve the effect that organic sewage processes and all can play excellence in sewage water denitrification technique.Composite gap biological filler (MCM) originates from
Japan, the technological progress through more than 20 years has developed into the biochemical water technology of a whole set of maturation.At MCM composite gap
Filler exists the little space between the big space between filling ball, filling ball medium block and the micro-sky within filling ball medium block
Gap, in big space, rate of flow of fluid is fast, and air water exchange fully, is suitable for growth of aerobic microorganisms；Gas in micropore in medium block
Water mass transfer can only be realized by diffusion process, is suitable for anaerobe growth.Pollutant and activated sludge under current drive
Macropore aerobic zone, aperture anoxic zone and micropore anaerobic zone exchange repeatedly, makes " nitrification, denitrification on the spot " to be possibly realized, also make
The biochemical degradation on the spot obtaining mud is achieved.
The biofilm reactor that the present invention uses has the advantage that effective microbe can be fixed on medium block by MCM
Surface, makes the time of staying of microorganism be greatly prolonged, and therefore can more effectively screen and acclimated microorganism；MCM exist multiple
The surface that dissolved oxygen environment and multiple-microorganism can adhere to so that synchronous nitration and denitrification is possibly realized；Microbial species in MCM
Group's specific activity sludge is abundant many, thus the Organic substance of bio-degradable but may not be used in MCM reactor in activated sludge
With by biochemical degradation；Owing to there is abundant growth of microorganism environment in MCM reactor, as long as certain microorganism has " food " this
Microorganism is it is possible to breed in MCM.Therefore, in MCM system, remaining biological sludge will be with under gas water flowing drives
Those microorganism haptoreactions being " food " with mud, final remaining biological sludge is degraded.
MCM material can be MCM-41.It is a kind of nano structural material, and having duct is six side's ordered arrangement, size
The features such as uniformly, aperture can continuously adjust in the range of 2-10nm, specific surface area is big.
MCM-41 synthesis be different from conventional molecular sieve synthesis maximum feature be template used dose of difference, traditional zeolite or point
The synthesis of son sieve is that as a example by ZSM-5, typical template agent used is four with single organic molecule or metal ion as template
Propyl group amine ion, crystal is to be formed by hydrochlorate polycondensation around template.The synthesis of MCM-41 is the most different, it be with
Molecules surfactant is template, and the alkyl chain of template is typically greater than 10 carbon atoms.Compared with other zeolitic material,
The framework aluminum species heat stability of MCM-41 is relatively poor, and in roasting process, framework aluminum species are come off by skeleton becomes non-bone
Frame aluminium species.Typically require and it is modified, to increase its catalysis activity.Modified method mainly has:
1. mixing heteroatomic MCM-41 in synthetic bone shelf structure, in skeleton, the ion of non-four-coordination is such as: Al3+、Cu2+、Fe3 +、Zn2+、Ga3+At the anionic surface center of generation, can be contended with by proton or other transition metal ions thus be formed
Catalytic active center.
2. use and support the methods such as heteropoly acid, a series of heterogeneous catalyst being applicable to differential responses can be prepared, such as: B-acid
Hydrogen MCM-41；Doping L acid type MCM-41；The alkalescence of blended metal oxide or both sexes MCM-41；Support PW12, SIW12,
The MCM-41 of the heteropoly acids such as PMo12；And support TiO2/SO4 2-、ZrO2/SO4 2-MCM-41 Deng solid ultra strong acid type.
3.MCM-41 assemble immobilized macromole transition metal complex in hole.
MCM material can be MCM-48.MCM-48 molecular sieve belongs to M41S series mesopore molecular sieve, has about 2.6nm left
Separate three-dimensional spiral pore network structure is overlapped in right homogeneous aperture and two.MCM-48 have good long-range order and
Higher heat stability.Separate at selective catalysis, macromolecules adsorption, the aspect such as the assembling of nanocluster all has the most tempting
Application prospect, the electron transfer photosensitizer of synthesizing new, quasiconductor material can be come as adsorbent, catalysis material and material of main part
Material, carbon fiber, nonlinear optical material and quantum cluster etc..Because its aperture is big, can adsorb well from waste water Hg,
Pb, Ag, Cd plasma radius is big, be difficult to the heavy metal ion adsorbed by micro porous molecular sieve.Higher at sulfate ion content
In the case of, chromate and the arsenate of low concentration can be removed, it is also possible to process the biodegradation of benzene in waste water, toluene and
Volatile organic compound.
MCM micropore composite gap biological ball used in the present invention is by a netted shell of rigid plastics and is filled to wherein
Microporous medium block composition.It can make to there is aerobic, anoxia and anaerobism multiple-microorganism system in bioreactor simultaneously, can be big
Improve greatly sewage treating efficiency, strengthen the microbial activity of degraded organic sludge, effectively lower mud generation amount.This technology is special
It is not applicable to the removal of hardly degraded organic substance.
Multiple technology microcosmic are combined by biofilm reactor of the present invention, define for hardly degraded organic substance dirty
Water technology and the sewage disposal technology of multistage coupling technique.
Described biofilm reactor uses two grades of coupling techniques.Two-stage coupling biochemical system domestication cultivate two kinds different micro-
Biological flora, at strengthening system denitrifying capacity simultaneously, removes bio-degradable Organic substance as much as possible.
The schematic diagram of two grades of coupling techniques of biofilm reactor 3 as shown in Figure 2, described biofilm reactor 3 wraps
Include 35, four dividing plates of water inlet and outlet 36.From water inlet 35 to the direction of outlet 36, four dividing plates are designated as respectively
321,322,323 and 324, wherein, the bottom of 321,322,323 is provided with the space that can pass water through, and the bottom of dividing plate 324 can not
Pass water through.The height of water inlet 35 is less than the height of dividing plate 321, and the height of outlet 36 is less than the height of dividing plate 324.Four
Biofilm reactor 3 is separated into five spaces by dividing plate, and on outlet 36 direction at water inlet 35, described five spaces are divided
It is not 331,332,333,334 and 335, wherein, space 331,332,333 and 334 is all filled with composite gap biological ball 31,
The bottom in space 332 and space 334 is respectively arranged with aerator 341 and 342, when described biofilm reactor 3 works, and institute
State aerator 341 and 342 and produce gas, make the bottom in space 332 and space 334 produce negative pressure, promote space 331 and space
Liquid in 333 is respectively by the space inflow space 332 bottom dividing plate 321 and dividing plate 322, in like manner, the liquid in space 333
By the space inflow space 334 bottom dividing plate 323, in turn result in the liquid level in space 332 higher than space 331 and space 333
Liquid level, the liquid level in space 334 are higher than the liquid level in space 333.When the liquid level in space 332 is higher than dividing plate 321 and dividing plate
When 322, the water in space 332 is then flowed into space 331 and space 333 from top, and in like manner, the water in space 334 is then from upper
Portion is flowed in space 332 and space 335, thus completes the circulation of water in space 331,332,333 and 334, is flowed into space
The water of 335 flows out biofilm reactor via outlet 36.
Oxidation enhanced biological reactor
Condensed oil sewage after biofilm reactor processes enters oxidation enhanced biological reactor.Oxygen used in the present invention
Changing enhanced biological reactor and have 1-3 set, often set oxidation enhanced biological reactor includes 1 set ozone reactor and 1 set charcoal
Reactor.
The number of described oxidation enhanced biological reactor specifically can be enumerated as: 1,2,3.Oxidation enhanced biological reactor
In, ozone reactor and charcoal reactors in series.
Containing temporary noxious substance in oil extraction waste water, toxic action is played in microorganism, simultaneously its high temperature and high salt
Water quality characteristics makes the growth of microorganism be suppressed.Now, processing with general biological method, degradation rate is relatively slow, microorganism
One longer period is needed to adapt to.Cultivating and tame efficient dominant microflora, using oxidation enhanced biological technology is to realize height to contain
The effective way of salt, difficult degradation oil extraction waste water biological treatment.
As it is shown in figure 1, oxidation enhanced biological reactor includes ozone reactor and charcoal reactor.First ozone occurs
The ozone that device 411 produces enters into pipeline, and the mixture of water enters the first ozone reactor 412, through the first ozone reactor
412 process after water enter the first charcoal reactor 413, the water after the first charcoal reactor 413 processes enters the
Two ozone reactors 415.Water after the second ozone reactor 415 processes enters the second charcoal reactor 416, wherein,
First ozone reactor the 412, first charcoal reactor the 413, second ozone reactor the 415, second charcoal reactor 416 depends on
Secondary it is connected in series.Operative practice proves, in the case of ozone amount adds constant total quantity, because of the first ozone reactor 412, first
Charcoal reactor the 413, second ozone reactor the 415, second charcoal reactor 416 is sequentially connected in series, and makes ozone utilize
Rate improves 15%-20%.
Ozone decomposes generation nascent oxygen atom in water and has strong electrophilic or protophilia, forms tool in water
Having the hydroxyl radical free radical of strong oxidation, hydroxyl radical free radical current potential is high, and for 2.8V, respond is strong, and speed is fast, and chain can be caused anti-
Should, make many Organic substances thoroughly degrade.
Ozonisation makes hydrion in water increase, and in activated carbon surface forms more hydrogen bond and electronegativity, anion is led to
The resistance crossing activated carbon hole is substantially reduced, and reduces diffusional resistance when polluter is adsorbed, and improves the suction of activated carbon
Attached ability.
Deliquescent Organic substance can be resolved into carbon dioxide and water or the Organic substance of non-dissolving by biodegradation process,
Form the benign cycle of adsorption-desorption, in a disguised form improve adsorption capacity.Biological oxidation characteristic is utilized to the improvement of water quality and to stablize
Effect, improves the service life of activated carbon, reduces processing cost.
Ultrafiltration apparatus
Condensed oil sewage after oxidized enhanced biological reactor for treatment enters ultrafiltration apparatus.Ultrafiltration used in the present invention fills
Put and be mainly used in removing larger molecular organics and antibacterial etc. in water further, it is ensured that delivery turbidity, provide for follow-up equipment simultaneously
Ensure.
Ultra-filtration and separation is the membrane separating process with pressure differential as motive force, and ultrafilter membrane can allow solvent particles and little molecule saturating
Cross, and macromole and microgranule can not pass through.Typical Ultrafiltration Membrane can retain the granule between 0.002-0.1 μm and miscellaneous
Matter, it is allowed to small-molecule substance and inorganic salt etc. pass through, stops colloid, protein, microorganism and larger molecular organics.
Existing hyperfiltration technique is primarily directed to the process of low permeability oil field reinjected water in the research of disposing polluted water in oil.Ultrafiltration
Technology is industrially difficult to the reason of large-scale application and is, one be the pretreatment oil removing process of film it cannot be guaranteed that deoiling effect,
Water inlet oil content is high, and fouling membrane is serious, and flux declines fast, and present most research concentrates on how in the cleaning of film, and
The pretreating process of film is studied less；Two is the cleaning and regeneration difficulty of film, owing to each oil field water quality difference is big, thus cleaning side
Method is different.
Ultrafiltration reactor used in the present invention is external-compression type ultrafiltration reactor.
In ultrafiltration reactor used in the present invention, ultrafiltration membrane material is Kynoar, and film silk internal diameter is 0.5-1.0mm,
External diameter is 1.0-2.0mm, and pore size filter is 0.01-1.00 μm.
Ultrafilter membrane after special handling has excellent hydrophilic, and oil resistant pollution capacity is strong；Its bigger internal diameter is with outer
Pressure type design also improves its resistance tocrocking；It retains molecule rate height and makes it produce water water quality preferably, and the protection to reverse osmosis is made
With more excellent.
Second level reverse osmosis apparatus
Condensed oil sewage after ultrafiltration apparatus processes enters second level reverse osmosis apparatus.Two-pass reverse osmosis of the present invention
Membrane material in device has the characteristics such as selection low pressure, resistance tocrocking, salt tolerance.
The pipeline connecting ultrafiltration apparatus and second level reverse osmosis apparatus is provided with the medicine feeding hole adding antisludging agent.
The membrane material of existing reverse osmosis unit develops into gather with surface from the cellulose acetate anisotropic membrane that the initial stage is single
The crosslinked aromatic polyamide composite membrane that conjunction technology is made.Operation pressure also extends to high-pressure membrane, middle press mold, low-pressure membrane and ultralow
Press mold.The form of membrane module also presents diversified trend this year.Except traditional hollow fiber form, rolling, tubular type and
Beyond plate and frame, develop again the flat film of revolution, impregnate flat film etc..
As it is shown in figure 1, second level reverse osmosis apparatus 6 includes the first reverse osmosis unit 61 and the second reverse osmosis unit 62, wherein,
First reverse osmosis unit 61 and the second reverse osmosis unit 62 are for being connected in series, and water flows into after the first reverse osmosis unit 61 processes
Second reverse osmosis unit 62 is further processed, and it mainly removes various ions in water.
Reverse osmosis is the water technology using membrane separating, and its principle is under pressure, through reverse osmosis membrane
Water becomes pure water；Impurity in water is retained by reverse osmosis membrane and is carried over.It is molten that reverse osmosis technology can be removed in water effectively
Solve the impurity such as salt, colloid, antibacterial, virus, bacterial endotoxin and major part Organic substance.
Two-pass reverse osmosis be exactly first order reverse osmosis through the adjusted pH value of water after, then be sent into the by second level high-pressure pump
Two-stage reverse osmosis system processes, thus obtains the process through water.Reverse osmosis technology is the most just to grow up in China
A modern high technology.Reverse osmosis is exactly that solution applies the pressure more than osmotic pressure, makes water pass through special half
Permeable membrane, separates from solution.Because this process and phenomenon of osmosis are contrary, so referred to as reverse osmosis.By various materials
Different osmotic, it is possible to certain solution is used the reverse osmosis more than osmotic pressure, reaches solution to be separated, carries
Take, purification and the purpose of concentration.
Reverse osmosis unit, the ion range in primarily discrete solution, it, without heating, does not more have phase transition process, therefore
Lower than traditional method energy consumption.With reverse osmosis unit, process water for industrial use, do not consume a large amount of soda acid, non-secondary pollution, its fortune
Row expense also ratio is relatively low.
Continuous electric desalination device
Specifically, EDI technology anion-cation exchange resin is filled between anion and cation exchange membrane formation EDI mono-
Unit, anion exchange membrane is alternately arranged with cation exchange membrane, along anion exchange membrane and the adjacent cation of direction of an electric field
The space filling anion-cation exchange resin between exchange membrane forms freshwater room, forms dense hydroecium between adjacent freshwater room.
When sewage flows through freshwater room, the ion in former water and ion exchange resin generation ion exchange.At direct current
Under the effect of electric field, the ion transfer channels that the zwitterion on resin is formed by ion exchange resin moves to the two poles of the earth respectively
Moving, cation and anion enter into dense hydroecium by cation exchange membrane and anion exchange membrane respectively and are removed.When
EDI running current overstep the extreme limit electric current time, the boundary layer near film and resin polarizes, hydrolytic dissociation, and produces OH-And H+.This
A little ions, in addition to being migrated to dense hydroecium except some participation load currents, the zwitterion made in freshwater room is handed over by major part
Change agent regeneration, keep its exchange capacity.Visible, at ion exchange, the selective migration of ion and resin under DC electric field
Under the common effect of electrically regenerative three processes, EDI achieves the company to low concentration solution under conditions of need not chemical regeneration
Continuous advanced desalination process.
Except inorganic pollution in condensed oil sewage, the most substantial amounts of organic pollution.In condensed oil sewage, naturally occurring has
Machine compound is broadly divided into four classes, i.e. aliphatic hydrocarbon and aphthenic acids, aromatic hydrocarbon, polar compound and fatty acid.In different oil fields,
The relative amount of these compounds and molecular weight distribution change the most greatly.
In condensed oil sewage, the content range of aliphatic hydrocarbon and cycloalkane is wider, carbon atom less than 5 aliphatic hydrocarbon very soluble in
In water, it it is main volatile organic carbon.Arene compound and aliphatic hydrocarbon compound constitute so-called carbon in condensed oil sewage
Hydrogen content, and polar compound and fatty acid cpds are commonly referred to other Organic substance.Arene compound particularly benzene, first
Benzene, ethylbenzene and naphthalene, they are dissolved in the water, and constitute the soluble compounds in condensed oil sewage.
Polar compound such as phenols is generally soluble in water, but usual content is the highest in crude oil or condensed fluid, and therefore viscous crude is dirty
Polar compounds substrate concentration in water will be generally below aromatic hydrocarbon content.Fatty acid particularly acetic acid is highly soluble in water, therefore viscous crude
Sewage contains the fatty acid (about 1000mg/L) of higher concentration.
Having added substantial amounts of chemical agent in oil recovery process, these chemical agents have important effect, such as: viscosity reduction,
Inhibition, scale inhibition, anti-foam, wax control, sterilization, breakdown of emulsion, coagulation, dehydration.Some chemical agent is neat compounds such as methanol, other one
A little for being dissolved in solvent or the most molten surfactant.According to these chemical agents Comparative dissolution in oil, gas and water three-phase
Degree, different chemical agents all will enter oil, gas and water three-phase, only its concentration difference.Surfactant can enter
Any liquid phase, but in oil recovery process, some surfactant to be consumed.Therefore these chemical agents of accurate evaluation are wanted
Quantity and type are extremely difficult.
Corrosion inhibiter in condensed oil sewage is mainly amide compound and imidazolinium compounds, and antisludging agent is mainly Phosphation
Compound and phosphate cpd, demulsifier is mainly alkoxy resin, poly-hexanediol fat and alkylbenzenesulfonate, and polyelectrolyte is main
For polyamide compound.These pollutant are very difficult to remove upon mixing.
Condensed oil sewage viscosity is big, profit density contrast is little, emulsifying is serious, water temperature is high, water quality and quantity changes greatly, intractability
Greatly, the development of high efficiency sewage clarifier and exploitation are basis and the keys of condensed oil sewage advanced treating.Strengthening leading portion deoiling effect, subtracts
The pressure of light back segment filtration system, makes whole Technology reasonable, compact and efficient；The homogenizing of sewage must be taken into full account simultaneously
All measure, it is to avoid whole technological process is impacted by water.
Condensed oil sewage processing technological flow for its essence be exactly oil removing, oil removal, except hardness, except silicon dioxide and
Optimum organization except techniques such as COD.Oil removing process mainly includes coagulating sedimentation, air supporting etc., removes the suspended oil of the overwhelming majority, for
The filtration system of back segment, melded system and biological treatment system create favorable conditions.If leading portion deoiling effect is bad, even if after
Section filtration system the longest, viscous crude also can gradually adsorb on the filtrate in each filter, cause filtrate to harden, filtering velocity reduce,
The phenomenons such as effluent quality degenerates, accelerate the inefficacy of filtrate, make whole processing system in paralyzed state.Although taking increasing
Back washing strength, extend backwashing time, increase surface washing and add the technical measures such as chemical, but can not be from
Fundamentally solve the halfway problem of backwash.In actual production process, it has to often change filtrate, bring to production management
Trouble.Whereas if leading portion deoiling effect is good, enter the mainly float of back segment filtration system, then filtration system is just
Can play its superior function removing oil removal, last part technology flow process can be simplified simultaneously, it is ensured that water outlet reach injection boiler and
The water standard of outer row.
Chemical agent conventional in terms of condensed oil sewage process has: organic and inorganic two classes.Organically mainly there is polypropylene
Amide-type, rp demulsification class etc.；Inorganic mainly has aluminium polychlorid, Polyferric Sulfate class etc..
Thickened oil recovery uses steam to drive or steam soak mode mostly, and this most necessarily has a large amount of oil-polluted water to produce.Simultaneously
Thermal recovery mode needs substantial amounts of clear water resource, and oil field is in China's freshwater resources water-deficient area more, and water resource is nervous.Application fresh water
Carrying out thermal recovery and deposit problem both ways, one is freshwater source and fresh water cost issues, and two is that thermal recovery block output water is not owing to returning
With, the problem how to process.
Viscous crude steam injection development, Produced Liquid is after processed, and sewage outlet has the most several: 1. be adjusted to thin oil block
As effective water filling water source re-injection oil reservoir.But this mode can only spend a part, because thin oil block also produces oil-polluted water, especially
Being latter period of oilfield development, self-produced sewage is more.2. injecting useless stratum, the most invalid re-injection, in order to prevent ground pollution.This go out
Though with respite sewage problem of outlet, but can there is the biggest problem in road: one stratum of giving up is limited, and its two return water consumes big
Amount electric energy.3. qualified discharge after processing.There is strict restriction in country to wastewater disposition total amount, and wastewater disposition is collected outer row
Expense.All outer can not arrange even if up to standard after sewage disposal, and process and need considerable handling.4. it is back to after processing
Gas injection development thermal recovery boiler so that it is reuse on the spot after condensed oil sewage process.This is the effective way making waste water reclaiming, neither
Pollute surrounding, the heat energy of condensed oil sewage can be made full use of again.Both fresh-water-saving resource, saves again heat energy.
At present, condensed oil sewage, after advanced treating, should meet the standard of table 1.
Table 1
Water after the method process that the present invention provides can meet the standard of condensed oil sewage reuse.
The present invention provides the processing method of a kind of reuse condensed oil sewage, it is characterised in that processing step is: by thick-oil waste water
Pass sequentially through sedimentation device, air supporting or Bi-stage air floater, biofilm reactor, oxidation enhanced biological reactor, ultrafiltration apparatus,
Second level reverse osmosis apparatus, continuous electric desalination device, described Bi-stage air floater is twin-stage dissolved air flotation device.
In some embodiments, described sedimentation device is coagulant precipitation device.
In some embodiments, filler used by described biofilm reactor is MCM micropore composite gap biological ball.
In some embodiments, described MCM micropore composite gap biological ball by a netted shell of rigid plastics and fills
Fill out microporous medium block therein composition.
In some embodiments, described biofilm reactor uses two grades of coupling techniques.
In some embodiments, described biofilm reactor is provided with 4 dividing plates, from water inlet to outlet
On direction, being provided with, bottom the 1st, 2,3 dividing plates, the space that can pass water through, the bottom of the 4th dividing plate can not pass water through.
In some embodiments, described biofilm reactor is separated into five spaces by 4 dividing plates, from water inlet to
On the direction of outlet, the bottom in second space and the 4th space is provided with aerator.
In some embodiments, described oxidation enhanced biological reactor has 1-3 set, the often reaction of set oxidation enhanced biological
Device includes 1 set ozone reactor and 1 set charcoal reactor.
In some embodiments, described ultrafiltration apparatus is external-compression type ultrafiltration apparatus.
In some embodiments, in described ultrafiltration apparatus, the film silk internal diameter of ultrafiltration membrane material is 0.5-1.0mm, and external diameter is
1.0-2.0mm。
Embodiment 1
Such as Fig. 1, the processing method of a kind of reuse condensed oil sewage, processing step is: thick-oil waste water passes sequentially through sedimentation dress
Put, Bi-stage air floater, biofilm reactor, oxidation enhanced biological reactor, ultrafiltration apparatus, second level reverse osmosis apparatus, continuously
Electricity demineralizer, described Bi-stage air floater is twin-stage dissolved air flotation device.Described sedimentation device is coagulant precipitation device.Described
Biofilm reactor is MCM fixed bed carrier biofilm reactor.Filler used by described biofilm reactor is that MCM micropore is combined
Gap biological ball, MCM-48.Described MCM micropore composite gap biological ball is by a netted shell of rigid plastics and is filled to wherein
Microporous medium block composition.Aperture is 2.6nm.Described biofilm reactor uses two grades of coupling techniques.Described biomembrane reaction
Device is provided with 4 dividing plates, on the direction from water inlet to outlet, is provided with bottom the 1st, 2,3 dividing plates and water can be made to lead to
Crossing space, the bottom of the 4th dividing plate can not pass water through.Described biofilm reactor is separated into five spaces by 4 dividing plates,
On the direction from water inlet to outlet, the bottom in second space and the 4th space is provided with aerator.Described oxidation is strong
Changing bioreactor and have 2 sets, often set oxidation enhanced biological reactor includes 1 set ozone reactor and 1 set charcoal reactor.
Described ultrafiltration apparatus is external-compression type ultrafiltration apparatus.Ultrafiltration membrane material is Kynoar, and film silk internal diameter is 0.5mm, and external diameter is
1.0mm.The pipeline connecting ultrafiltration apparatus and second level reverse osmosis apparatus is provided with the medicine feeding hole adding antisludging agent.
Embodiment 2
Such as Fig. 1, the processing method of a kind of reuse condensed oil sewage, processing step is: thick-oil waste water passes sequentially through sedimentation dress
Put, Bi-stage air floater, biofilm reactor, oxidation enhanced biological reactor, ultrafiltration apparatus, second level reverse osmosis apparatus, continuously
Electricity demineralizer, described Bi-stage air floater is twin-stage dissolved air flotation device.Described sedimentation device is coagulant precipitation device.Described
Biofilm reactor is MCM fixed bed carrier biofilm reactor.Filler used by described biofilm reactor is that MCM micropore is combined
Gap biological ball, MCM-48.Described MCM micropore composite gap biological ball is by a netted shell of rigid plastics and is filled to wherein
Microporous medium block composition.Aperture is 2.6nm.Described biofilm reactor uses two grades of coupling techniques.Described biomembrane reaction
Device is provided with 4 dividing plates, on the direction from water inlet to outlet, is provided with bottom the 1st, 2,3 dividing plates and water can be made to lead to
Crossing space, the bottom of the 4th dividing plate can not pass water through.Described biofilm reactor is separated into five spaces by 4 dividing plates,
On the direction from water inlet to outlet, the bottom in second space and the 4th space is provided with aerator.Described oxidation is strong
Changing bioreactor and have 2 sets, often set oxidation enhanced biological reactor includes 1 set ozone reactor and 1 set charcoal reactor.
Described ultrafiltration apparatus is external-compression type ultrafiltration apparatus.Ultrafiltration membrane material is Kynoar, and film silk internal diameter is 0.5mm, and external diameter is
1.0mm.The pipeline connecting ultrafiltration apparatus and second level reverse osmosis apparatus is provided with the medicine feeding hole adding antisludging agent.
Embodiment 3
Such as Fig. 1, the processing method of a kind of reuse condensed oil sewage, processing step is: thick-oil waste water passes sequentially through sedimentation dress
Put, Bi-stage air floater, biofilm reactor, oxidation enhanced biological reactor, ultrafiltration apparatus, second level reverse osmosis apparatus, continuously
Electricity demineralizer, described Bi-stage air floater is twin-stage dissolved air flotation device.Described sedimentation device is coagulant precipitation device.Described
Biofilm reactor is MCM fixed bed carrier biofilm reactor.Filler used by described biofilm reactor is that MCM micropore is combined
Gap biological ball, MCM-50.Described MCM micropore composite gap biological ball is by a netted shell of rigid plastics and is filled to wherein
Microporous medium block composition.Aperture is 2.6nm.Described biofilm reactor uses two grades of coupling techniques.Described biomembrane reaction
Device is provided with 4 dividing plates, on the direction from water inlet to outlet, is provided with bottom the 1st, 2,3 dividing plates and water can be made to lead to
Crossing space, the bottom of the 4th dividing plate can not pass water through.Described biofilm reactor is separated into five spaces by 4 dividing plates,
On the direction from water inlet to outlet, the bottom in second space and the 4th space is provided with aerator.Described oxidation is strong
Changing bioreactor and have 2 sets, often set oxidation enhanced biological reactor includes 1 set ozone reactor and 1 set charcoal reactor.
Described ultrafiltration apparatus is external-compression type ultrafiltration apparatus.Ultrafiltration membrane material is Kynoar, and film silk internal diameter is 0.5mm, and external diameter is
1.0mm.The pipeline connecting ultrafiltration apparatus and second level reverse osmosis apparatus is provided with the medicine feeding hole adding antisludging agent.
Embodiment 4
Such as Fig. 1, the processing method of a kind of reuse condensed oil sewage, processing step is: thick-oil waste water passes sequentially through sedimentation dress
Put, Bi-stage air floater, biofilm reactor, oxidation enhanced biological reactor, ultrafiltration apparatus, second level reverse osmosis apparatus, continuously
Electricity demineralizer, described Bi-stage air floater is twin-stage dissolved air flotation device.Described sedimentation device is coagulant precipitation device.Institute
State addition mucoitin sulfate in coagulating sedimentation reactor running.Described biofilm reactor is MCM fixed bed filler biological
Membrane reactor.Filler used by described biofilm reactor is MCM micropore composite gap biological ball, MCM-48.Described MCM micropore is multiple
Close gap biological ball by a netted shell of rigid plastics and to be filled to microporous medium block therein and form.Aperture is 2.6nm.Institute
State biofilm reactor and use two grades of coupling techniques.Described biofilm reactor is provided with 4 dividing plates, from water inlet to going out
On the direction at the mouth of a river, being provided with and can pass water through space bottom the 1st, 2,3 dividing plates, the bottom of the 4th dividing plate can not make water
Pass through.Described biofilm reactor is separated into five spaces, on the direction from water inlet to outlet, second by 4 dividing plates
The bottom in space and the 4th space is provided with aerator.Described oxidation enhanced biological reactor has 2 sets, often set oxidation strengthening
Bioreactor includes 1 set ozone reactor and 1 set charcoal reactor.Described ultrafiltration apparatus is external-compression type ultrafiltration apparatus.Super
Filter membrane material is Kynoar, and film silk internal diameter is 0.5mm, and external diameter is 1.0mm.Connecting ultrafiltration apparatus and two-pass reverse osmosis dress
The pipeline put is provided with the medicine feeding hole adding antisludging agent.
Embodiment 5
The processing method of a kind of reuse condensed oil sewage, processing step is: thick-oil waste water passes sequentially through sedimentation device, air supporting
Device, biofilm reactor, oxidation enhanced biological reactor, ultrafiltration apparatus, second level reverse osmosis apparatus, continuous electric desalination device.
Described sedimentation device is coagulant precipitation device, and described air-floating apparatus is dissolved air flotation device.Described biofilm reactor is that MCM is solid
Fixed bed carrier biofilm reactor.Filler used by described biofilm reactor is MCM micropore composite gap biological ball, MCM-48.
Described MCM micropore composite gap biological ball is by a netted shell of rigid plastics and is filled to microporous medium block therein and forms.
Aperture is 2.6nm.Described biofilm reactor uses two grades of coupling techniques.Described biofilm reactor is provided with 4 dividing plates,
On the direction from water inlet to outlet, it is provided with bottom the 1st, 2,3 dividing plates and can pass water through space, the 4th dividing plate
Bottom can not pass water through.Described biofilm reactor is separated into five spaces by 4 dividing plates, from water inlet to outlet
Direction on, the bottom in second space and the 4th space is provided with aerator.Described oxidation enhanced biological reactor has 1
Set, often set oxidation enhanced biological reactor includes 1 set ozone reactor and 1 set charcoal reactor.Described ultrafiltration apparatus is outward
Pressure type ultrafiltration apparatus.Ultrafiltration membrane material is Kynoar, and film silk internal diameter is 0.5mm, and external diameter is 2.0mm.Connecting ultrafiltration dress
Put the pipeline with second level reverse osmosis apparatus and be provided with the medicine feeding hole adding antisludging agent.
Embodiment 6
The processing method of a kind of reuse condensed oil sewage, processing step is: thick-oil waste water passes sequentially through sedimentation device, twin-stage
Air-floating apparatus, biofilm reactor, oxidation enhanced biological reactor, ultrafiltration apparatus, second level reverse osmosis apparatus, continuous electric desalination fill
Putting, described Bi-stage air floater is twin-stage dissolved air flotation device.Described sedimentation device is coagulant precipitation device.Described biomembrane is anti-
Answering device is MCM fixed bed carrier biofilm reactor.Filler used by described biofilm reactor is MCM micropore composite gap biological
Ball, MCM-48.Described MCM micropore composite gap biological ball is by a netted shell of rigid plastics and is filled to micropore therein Jie
Mass forms.Aperture is 2.6nm.Described biofilm reactor uses two grades of coupling techniques.Described biofilm reactor is arranged
There are 4 dividing plates, on the direction from water inlet to outlet, are provided with bottom the 1st, 2,3 dividing plates and can pass water through space,
The bottom of the 4th dividing plate can not pass water through.Described biofilm reactor is separated into five spaces by 4 dividing plates, from entering water
Mouthful on the direction of outlet, the bottom in second space and the 4th space is provided with aerator.Described oxidation enhanced biological is anti-
Answering device to have 3 sets, often set oxidation enhanced biological reactor includes 1 set ozone reactor and 1 set charcoal reactor.Described ultrafiltration
Device is external-compression type ultrafiltration apparatus.Ultrafiltration membrane material is Kynoar, and film silk internal diameter is 1.0mm, and external diameter is 1.0mm.Even
The pipeline connecing ultrafiltration apparatus and second level reverse osmosis apparatus is provided with the medicine feeding hole adding antisludging agent.
Evaluation methodology
1. hardness
SP510 online hardness analysis instrument is used to measure the sewage after embodiment 1-4 processes.
2. ferrum
The sewage after embodiment 1-4 processes is measured according to HG/T 4327.
3. silicon dioxide
CM-04-32 silicon dioxide water quality analyzer is used to measure the sewage after embodiment 1-4 processes.
4.pH value
PH6000 desk-top PH measuring instrument is used to measure the sewage after embodiment 1-4 processes.
5. oil
The sewage after embodiment 1-4 processes is measured according to GB/T1576.
6. float
The sewage after embodiment 1-4 processes is measured according to GB/T 11901.
Testing result is shown in Table 2.
Table 2
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | |
| Hardness (μm ol/L) | 0.05 | 0.05 | 0.04 | 0 |
| Ferrum (μ g/L) | 2 | 4 | 2 | 0 |
| Silicon dioxide (μ g/L) | 10 | 25 | 20 | 2 |
| PH value (25 DEG C) | 10.5 | 9.5 | 8.2 | 9.1 |
| Oil (mg/L) | 0.2 | 0.1 | 0.2 | 0 |
| Float (mg/L) | 0.5 | 1 | 0.8 | 0 |
The above, only presently preferred embodiments of the present invention, it is not intended to limit protection scope of the present invention.Every
The impartial change done according to present invention and modification, be encompassed by the scope of the claims of the present invention.
Claims (10)
1. the processing method of a reuse condensed oil sewage, it is characterised in that processing step is: thick-oil waste water is passed sequentially through sedimentation
Device, air supporting or Bi-stage air floater, biofilm reactor, oxidation enhanced biological reactor, ultrafiltration apparatus, two-pass reverse osmosis dress
Put, continuous electric desalination device, described Bi-stage air floater is twin-stage dissolved air flotation device.
The processing method of a kind of reuse condensed oil sewage the most as claimed in claim 1, it is characterised in that described sedimentation device is mixed
Retrogradation falling unit.
The processing method of a kind of reuse condensed oil sewage the most as claimed in claim 1, it is characterised in that described biofilm reactor
Filler used is MCM micropore composite gap biological ball.
The processing method of a kind of reuse condensed oil sewage the most as claimed in claim 3, it is characterised in that described MCM micropore is combined
Gap biological ball is by a netted shell of rigid plastics and is filled to microporous medium block therein and forms.
The processing method of a kind of reuse condensed oil sewage the most as claimed in claim 3, it is characterised in that described biofilm reactor
Use two grades of coupling techniques.
The processing method of a kind of reuse condensed oil sewage the most as claimed in claim 5, it is characterised in that described biofilm reactor
In be provided with 4 dividing plates, on the direction from water inlet to outlet, be provided with and can pass water through bottom the 1st, 2,3 dividing plates
Space, the bottom of the 4th dividing plate can not pass water through.
The processing method of a kind of reuse condensed oil sewage the most as claimed in claim 6, it is characterised in that described biofilm reactor
Being separated into five spaces by 4 dividing plates, on the direction from water inlet to outlet, the bottom in second space and the 4th space sets
It is equipped with aerator.
The processing method of a kind of reuse condensed oil sewage the most as claimed in claim 1, it is characterised in that described oxidation enhanced biological
Reactor has 1-3 set, and often set oxidation enhanced biological reactor includes 1 set ozone reactor and 1 set charcoal reactor.
The processing method of a kind of reuse condensed oil sewage the most as claimed in claim 1, it is characterised in that described ultrafiltration apparatus is outward
Pressure type ultrafiltration apparatus.
The processing method of a kind of reuse condensed oil sewage the most as claimed in claim 9, it is characterised in that in described ultrafiltration apparatus
The film silk internal diameter of ultrafiltration membrane material is 0.5-1.0mm, and external diameter is 1.0-2.0mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN115432890A (en) * | 2022-09-21 | 2022-12-06 | 无锡市道格环保科技有限公司 | Treatment device and method for reducing pollutant discharge in chromium-containing metal ion wastewater |
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| CN106277614B (en) | 2019-05-10 |
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