CN104609601B - Micro-sand circulation High-speed clarification method for treating water cut out from oil field - Google Patents

Micro-sand circulation High-speed clarification method for treating water cut out from oil field Download PDF

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CN104609601B
CN104609601B CN201510040432.XA CN201510040432A CN104609601B CN 104609601 B CN104609601 B CN 104609601B CN 201510040432 A CN201510040432 A CN 201510040432A CN 104609601 B CN104609601 B CN 104609601B
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oil
sand
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CN104609601A (en
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罗春林
黄强
杨萍萍
王大勇
赵美刚
王爱军
曹军
郑帅
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XINJIANG PETROLEUM PROSPECTING DESIGN RESEARCH INSTITUTE (CO LTD)
China National Petroleum Corp
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XINJIANG PETROLEUM PROSPECTING DESIGN RESEARCH INSTITUTE (CO LTD)
China National Petroleum Corp
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Abstract

The present invention relates to method for treating water cut out from oil field technical field, be that a kind of micro-sand circulates High-speed clarification method for treating water cut out from oil field；Carry out as follows: the first step, oil field extracted water obtains mixed liquor after separating oil slick in degreasing unit, second step, the boosted pump of mixed liquor in degreasing unit enters in coagulating basin, in coagulating basin, add coagulant and be uniformly mixing to obtain the first suspension, coagulant concentration in the first suspension is 30mg/L to 50mg/L, and the first suspension enters and adds Sha Chizhong.The present invention micro-sand circulation more existing treatment Technology for Petroleum Water Flooding of High-speed clarification method for treating water cut out from oil field, oil field extracted water treating capacity is big, treatment effeciency is high, the water quality of water purification is good, reduce coagulant and the chemical feeding quantity of flocculation aid, decrease the discharge capacity of band water greasy filth, reduce the pollution to soil；The separation efficiency of the most micro-sand is high and can recycle, and reduces production cost.

Description

Micro-sand circulation High-speed clarification method for treating water cut out from oil field
Technical field
The present invention relates to method for treating water cut out from oil field technical field, be that a kind of micro-sand circulates High-speed clarification method for treating water cut out from oil field.
Background technology
Oil field produced water treatment system is the important component part of oilfield surface engineering facility, is the important content of oil field normal operation.Current domestic each oil field is different according to respective recovered water character, defines the Treatment Techniques of Extracted Water from Crude Oil Production that comparative maturity shows unique characteristics, and substantially achieves the resource application processing re-injection, qualified discharge and the feedwater of reuse injection-steam boiler of oil field extracted water.
It is as follows that oil field at home commonly uses produced water treatment technological process:
1) reuse oil-field flooding technological process has following several: 1. recovered water → gravity oil-removing → coagulant precipitation → filter → go water-injection station；2. recovered water → gravity oil-removing → air supporting select → filter → remove water-injection station；3. recovered water → gravity oil-removing → cyclonic separation → filter → go water-injection station；4. recovered water → oil water separator → (adding demulsifier) → hydrocyclone → water filling (U.K. North Sea ULa oil field)；5. recovered water → primary oil water separator → bis-grade oil water separator → air supporting → water filling (oil field, Kuwait the north)；Reuse oil-field flooding technological process 1. domestic and international application accounts for more than 50%, and 2. flow process is applied and accounted for 30%, and the application of remaining flow process accounts for 20%.
2) technological process of reuse heavy oil development wet steam generator has following several: 1. recovered water pretreatment → cascade filtration → ion exchanges → go heating plant；2. recovered water pretreatment → stripper desulfurization → Calx softening → cascade filtration ion exchange → reuse boiler；Reuse heavy oil development wet steam generator technological process recovered water pretreatment is mainly coagulant precipitation and gas flotation process, and coagulant precipitation domestic and international application accounts for more than 70%, and flow process gas flotation applications accounts for 30%.
Coagulant precipitation PROCESS FOR TREATMENT effect quality depends on that factor is a lot；Whether the Water purification medicament of screening satisfies the need, oil and suspension content, unstable ion content, the height etc. of salinity in recovered water temperature, oil field extracted water；And the flco that frequently forms is little and loose, settlement separate difficulty.The key of therefore produced water treatment technology and core are to solve a settling of floccus difficult problem.
Oil field at home recovered water coagulant precipitation processes conventional solution mainly to be had: adds excess flocculant and flocculation aid, add positively charged particulate matter (such as bentonite), water quality modification technology (feeding lime) etc., such as:
The Chinese patent literature of Publication No. CN101050008A discloses a kind of method for treating water cut out from oil field, it is characterised in that: the first step adds heavy nucleus agent, and second step adds catalyst, and the 3rd step adds water purification agent, and the 4th step adds flocculation aid and obtains water purification.
The Chinese patent literature of Publication No. CN101254959A discloses a kind of bentonite sewage water treating method, it is characterized in that: calcio or sodio or Acidic Bentonite are ground into 10 mesh to 600 mesh, pour in treatment sewage and stir, again by 24% octadecyl trimethyl ammonium chloride, pour in sewage, stirring, pour flocculant again into, stirring, sedimentation, carry out water and soil separation, microbial treatments, qualified discharge.
The Chinese patent literature of Publication No. CN101016181A discloses a kind of silt coagulation agent and silt coagulation separation method, it is characterized in that taking each component of coagulation agent by the proportioning of coagulation agent, and it is configured to solution, it is sequentially added into ferric-polysilicate solution, sodium carbonate liquor, polyacrylamide solution in the silt processed, and be stirred producing turbulent fluctuation, after mixing 0.5min under flow turbulence effect, water will separate with silt floccule body, the suspension bed sediment of a large amount of high concentrations occurred in silt engineering can be assembled rapidly sedimentation and utilize, reach to improve the purpose of sediment usage rate.
The Chinese patent literature of Publication No. CN102531123A discloses a kind of micro-sand potentiation caked flocculation integrated water quality purification device, processes for city water.This equipment is with caking flocculation technology as core, by adding micro-sand as carrier, improves conglomeration body density further, strengthens the caking flocculation clean-up effect to low-cloudy water, it is achieved that the high-efficient purification to algae blooms water.This equipment is provided two kinds of different rotating speeds drive reaction shaft respectively and separate shaft by internal gear engagement by same driving motor, separates with silt particle for caking flocculation, improves the integrated level of main equipment；In main equipment, realize silt particle separate simultaneously.
The Chinese patent literature of Publication No. CN201510784U discloses a kind of micro-sand circulation efficient precipitation device, and this device is used for city tap-water factory.Including coagulation district, flocculation zone, tube settling district, water outlet distributing channel, in described coagulation district built with the first blender, this utility model also includes micro-sand blood circulation, and this micro-sand blood circulation includes sludge refluxing apparatus, hydro-cyclone diverter, discharger and sediment outflow pipe.
Although oil field extracted water processes and achieves good application effect on oil field at present, but still Shortcomings, the chemical feeding quantity of coagulant and flocculation aid is big, by-product band water greasy filth amount after process is big, by-product band water greasy filth common method is to carry out burying process by band water greasy filth, and soil causes certain pollution；And the water purification water quality inferiority obtained.
Summary of the invention
The invention provides a kind of micro-sand circulation High-speed clarification method for treating water cut out from oil field, overcome the deficiency of above-mentioned prior art, it can effectively solve existing treatment Technology for Petroleum Water Flooding, and to there is the chemical feeding quantity of coagulant and flocculation aid big, and the by-product band water greasy filth amount after process is big and the problem of water purification water quality inferiority.
nullThe technical scheme is that and realized by following measures: a kind of micro-sand circulation High-speed clarification method for treating water cut out from oil field，Carry out as follows: the first step，Oil field extracted water obtains mixed liquor after separating oil slick in degreasing unit，Second step，The boosted pump of mixed liquor in degreasing unit enters in coagulating basin，In coagulating basin, add coagulant and be uniformly mixing to obtain the first suspension，Coagulant concentration in the first suspension is 30mg/L to 50mg/L，First suspension enters and adds Sha Chizhong，Sand be uniformly mixing to obtain the second suspension in a subtle way is added adding Sha Chizhong，Micro-sand concentration in the second suspension is 5g/L to 15g/L，Second suspension enters educates Hua Chizhong，In educating pond, add flocculation aid and be uniformly mixing to obtain the 3rd suspension，Flocculation aid concentration in the 3rd suspension is 1.5mg/L to 2mg/L，3rd suspension enters in sedimentation tank and precipitates，Supernatant in precipitation final settling tanks is discharged by the top of sedimentation tank and is obtained water purification；3rd step, the precipitate in precipitation final settling tanks, in sludge pump enters blender, adds lytic agent in a mixer and is uniformly mixing to obtain mixture, and lytic agent concentration in the mixture is 2mg/L to 5mg/L；4th step, mixture enters in silt particle segregation apparatus and separates, respectively obtains micro-sand and band water greasy filth after separation, and the micro-sand after separation adds Sha Chizhong, and the band water greasy filth after separation is discharged.
Further optimization and/or improvements to foregoing invention technical scheme are presented herein below:
Above-mentioned coagulant is aluminium polychlorid.
Above-mentioned flocculation aid is polyacrylamide.
Above-mentioned lytic agent is diesel oil.
In above-mentioned oil field extracted water, oil content is 500mg/L to 1000mg/L, and in oil field extracted water, float is 250mg/L to 300mg/L.
In above-mentioned water purification, the content of float is 8mg/L to 10mg/L, and in water purification, the content of oil is 5mg/L to 10mg/L.
Above-mentioned sedimentation tank is tube settler, and the liquid level load of sedimentation tank is 15m3/m2H to 25m3/m2h。
The particle diameter of above-mentioned micro-sand is that 80 μm are to 120 μm；Or/and, in the mixed liquor in degreasing unit, oil content is 150mg/L to 250mg/L, and in the mixed liquor in degreasing unit, the content of float is 100mg/L to 150mg/L.
Stir speed (S.S.) in above-mentioned coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
Above-mentioned degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
The present invention micro-sand circulation more existing treatment Technology for Petroleum Water Flooding of High-speed clarification method for treating water cut out from oil field, oil field extracted water treating capacity is big, treatment effeciency is high, the water quality of water purification is good, reduce coagulant and the chemical feeding quantity of flocculation aid, decrease the discharge capacity of band water greasy filth, reduce the pollution to soil；The separation efficiency of the most micro-sand is high and can recycle, and reduces production cost.
Accompanying drawing explanation
Accompanying drawing 1 is the process flow diagram of the present invention.
Detailed description of the invention
The present invention is not limited by following embodiment, can determine specific embodiment according to technical scheme and practical situation.
In the present invention, for the ease of describing, the description of the relative position relation of each parts is all that the Butut mode according to Figure of description 1 is described, such as: the position relationship of forward and backward, upper and lower, left and right etc. is based on the Butut direction of Figure of description 1 and determines.
Below in conjunction with embodiment and accompanying drawing, the invention will be further described:
nullEmbodiment 1，As shown in Figure 1，This micro-sand circulation High-speed clarification method for treating water cut out from oil field，Carry out as follows: the first step，Oil field extracted water obtains mixed liquor after separating oil slick in degreasing unit，Second step，The boosted pump of mixed liquor in degreasing unit enters in coagulating basin，In coagulating basin, add coagulant and be uniformly mixing to obtain the first suspension，Coagulant concentration in the first suspension is 30mg/L to 50mg/L，First suspension enters and adds Sha Chizhong，Sand be uniformly mixing to obtain the second suspension in a subtle way is added adding Sha Chizhong，Micro-sand concentration in the second suspension is 5g/L to 15g/L，Second suspension enters educates Hua Chizhong，In educating pond, add flocculation aid and be uniformly mixing to obtain the 3rd suspension，Flocculation aid concentration in the 3rd suspension is 1.5mg/L to 2mg/L，3rd suspension enters in sedimentation tank and precipitates，Supernatant in precipitation final settling tanks is discharged by the top of sedimentation tank and is obtained water purification；3rd step, the precipitate in precipitation final settling tanks, in sludge pump enters blender, adds lytic agent in a mixer and is uniformly mixing to obtain mixture, and lytic agent concentration in the mixture is 2mg/L to 5mg/L；4th step, mixture enters in silt particle segregation apparatus and separates, respectively obtains micro-sand and band water greasy filth after separation, and the micro-sand after separation adds Sha Chizhong, and the band water greasy filth after separation is discharged.So, micro-sand can strengthen oil field extracted water flocculation sediment effect, improves effluent quality, add micro-sand as heavy nucleus, the formation of induction of flocculation body, and then make floccule body granule shoot up, considerably increase the density of floccule body simultaneously, accelerate the sedimentation velocity of floccule body；The oil field extracted water treating capacity of the more existing treatment Technology for Petroleum Water Flooding of oil field extracted water treating capacity of the present invention micro-sand circulation High-speed clarification method for treating water cut out from oil field averagely doubles；The present invention micro-sand circulation High-speed clarification method for treating water cut out from oil field decreases 30% to 50% by the chemical feeding quantity of the chemical feeding quantity of coagulant and flocculation aid more existing treatment Technology for Petroleum Water Flooding coagulant and flocculation aid after adding micro-sand, the band water greasy filth that the band more existing treatment Technology for Petroleum Water Flooding of water greasy filth that the present invention micro-sand circulation High-speed clarification method for treating water cut out from oil field produces produces decreases 1/3, thus decreases the pollution to soil of the band water greasy filth；And the separation efficiency of micro-sand averagely can reach 95%, micro-sand can recycle, and reduces production cost.
nullEmbodiment 2，As shown in Figure 1，This micro-sand circulation High-speed clarification method for treating water cut out from oil field，Carry out as follows: the first step，Oil field extracted water obtains mixed liquor after separating oil slick in degreasing unit，Second step，The boosted pump of mixed liquor in degreasing unit enters in coagulating basin，In coagulating basin, add coagulant and be uniformly mixing to obtain the first suspension，Coagulant concentration in the first suspension is 30mg/L or 50mg/L，First suspension enters and adds Sha Chizhong，Sand be uniformly mixing to obtain the second suspension in a subtle way is added adding Sha Chizhong，Micro-sand concentration in the second suspension is 5g/L or 15g/L，Second suspension enters educates Hua Chizhong，In educating pond, add flocculation aid and be uniformly mixing to obtain the 3rd suspension，Flocculation aid concentration in the 3rd suspension is 1.5mg/L or 2mg/L，3rd suspension enters in sedimentation tank and precipitates，Supernatant in precipitation final settling tanks is discharged by the top of sedimentation tank and is obtained water purification；3rd step, the precipitate in precipitation final settling tanks, in sludge pump enters blender, adds lytic agent in a mixer and is uniformly mixing to obtain mixture, and lytic agent concentration in the mixture is 2mg/L or 5mg/L；4th step, mixture enters in silt particle segregation apparatus and separates, respectively obtains micro-sand and band water greasy filth after separation, and the micro-sand after separation adds Sha Chizhong, and the band water greasy filth after separation is discharged.
Embodiment 3, as the optimization of above-described embodiment, coagulant is aluminium polychlorid.Aluminium polychlorid can preferably compress colloid diffusion layer, neutralize electric charge, micro-wadding particle shape is made to become, add positively charged micro-sand again, neutralization colloid is electrical, and as the absorption heavy core of micro-wadding grain, the flco formed after making reaction is closely knit, and sedimentation velocity is fast, thus realizes oil field extracted water fast purification.
Embodiment 4, as the optimization of above-described embodiment, flocculation aid is polyacrylamide.Adding polyacrylamide in educating pond, make to be formed in the 3rd suspension big and loose flco alumen ustum, the formation big and loose flco alumen ustum of formation is combined more closely knit with micro-sand, and proportion is bigger.
Embodiment 5, as the optimization of above-described embodiment, lytic agent is diesel oil.Diesel oil makes oil from micro-sand sur-face peeling, enters back in silt particle segregation apparatus, it is simple to micro-sand and band water greasy filth are more easily separated, makes that micro-sand is the most contaminated to be recycled.
Embodiment 6, as the optimization of above-described embodiment, in oil field extracted water, oil content is 500mg/L to 1000mg/L, and in oil field extracted water, float is 250mg/L to 300mg/L.In oil field extracted water, oil-containing exists with oil slick, dispersed oil, oil emulsion and dissolved oil form；In oil field extracted water, suspended solid exists with shale, opaque and chiltern form.
Embodiment 7, as the optimization of above-described embodiment, in water purification, the content of float is 8mg/L to 10mg/L, and in water purification, the content of oil is 5mg/L to 10mg/L.In the water purification that existing treatment Technology for Petroleum Water Flooding obtains, the content of float is 20mg/L to 25mg/L, and in water purification, oil content is 20mg/L to 25mg/L；Illustrate that the water quality of the water purification that the present invention micro-sand circulation more existing treatment Technology for Petroleum Water Flooding of water purification of obtaining of High-speed clarification method for treating water cut out from oil field obtains improves a lot.
Embodiment 8, as the optimization of above-described embodiment, sedimentation tank is tube settler, and the liquid level load of sedimentation tank is 15m3/m2H to 25m3/m2h.In educating pond, the alumen ustum flco after micro-sand increases the weight of enters tube settler, the closely knit alumen ustum of major part before the inclined tube entering tube settler with regard to rapid precipitation under, the little flco alumen ustum of small part is through inclined tube, utilize the shallow pool principle of inclined tube, multiple impacts, coalescing, grow up, final settlement is got off, and alumen ustum and mud that micro-sand increases the weight of mix, it is collected bottom sedimentation tank, and is extracted out from bottom by sludge pump.In the existing treatment Technology for Petroleum Water Flooding of identical scale, the liquid level load of sedimentation tank is 9m3/m2H to 11m3/m2H, illustrates that the treating capacity of the present invention micro-sand circulation High-speed clarification method for treating water cut out from oil field is big, and treatment effeciency is high.
Embodiment 9, as the optimization of above-described embodiment, the particle diameter of micro-sand is that 80 μm are to 120 μm；Or/and, in the mixed liquor in degreasing unit, oil content is 150mg/L to 250mg/L, and in the mixed liquor in degreasing unit, the content of float is 100mg/L to 150mg/L.So, when the particle diameter of micro-sand is 80 μm to 120 μm, effects of purification quality is preferable, and micro-sand grains footpath is too small or is excessively mostly unfavorable for settling of floccus；In mixed liquor in degreasing unit, oil-containing is mainly based on oil emulsion and dissolved oil, and in the mixed liquor in degreasing unit, float is mainly based on opaque and shale solid suspension, the stable in properties of this kind of material, and proportion, close to water, cannot separate by natural subsidence.
Embodiment 10, as the optimization of above-described embodiment, the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
Embodiment 11, as the optimization of above-described embodiment, degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.In oil field extracted water, oil-containing exists with oil slick, dispersed oil, oil emulsion and dissolved oil form；In oil field extracted water, suspended solid exists with shale, opaque and chiltern form；Oil slick, dispersed oil are separated with chiltern solid suspension can be removed by gravity natural subsidence, and this partial contamination material generally uses oil removing pot or oil interceptor to remove through gravity natural separation.Mixture is sent to hydrocyclone, under centrifugal action, makes lighter band water greasy filth and the higher micro-sand of density be separated, and micro-sand is discharged bottom hydrocyclone, is rejoined and adds in sand pond, re-uses.The band water greasy filth that density is lighter is discharged from the top of hydrocyclone.
In sum, the present invention micro-sand circulation more existing treatment Technology for Petroleum Water Flooding of High-speed clarification method for treating water cut out from oil field, oil field extracted water treating capacity is big, treatment effeciency is high, the water quality of water purification is good, reduce coagulant and the chemical feeding quantity of flocculation aid, decrease the discharge capacity of band water greasy filth, reduce the pollution to soil；The separation efficiency of the most micro-sand is high and can recycle, and reduces production cost.
Above technical characteristic constitutes embodiments of the invention, and it has stronger adaptability and implementation result, can increase and decrease non-essential technical characteristic according to actual needs, meet the demand of different situations.

Claims (248)

  1. null1. micro-sand circulation High-speed clarification method for treating water cut out from oil field，It is characterized in that carrying out as follows: the first step，Oil field extracted water obtains mixed liquor after separating oil slick in degreasing unit，Second step，The boosted pump of mixed liquor in degreasing unit enters in coagulating basin，In coagulating basin, add coagulant and be uniformly mixing to obtain the first suspension，Coagulant concentration in the first suspension is 30mg/L to 50mg/L，First suspension enters and adds Sha Chizhong，Sand be uniformly mixing to obtain the second suspension in a subtle way is added adding Sha Chizhong，Micro-sand concentration in the second suspension is 5g/L to 15g/L，Second suspension enters educates Hua Chizhong，In educating pond, add flocculation aid and be uniformly mixing to obtain the 3rd suspension，Flocculation aid concentration in the 3rd suspension is 1.5mg/L to 2mg/L，3rd suspension enters in sedimentation tank and precipitates，Supernatant in precipitation final settling tanks is discharged by the top of sedimentation tank and is obtained water purification；3rd step, the precipitate in precipitation final settling tanks, in sludge pump enters blender, adds lytic agent in a mixer and is uniformly mixing to obtain mixture, and lytic agent concentration in the mixture is 2mg/L to 5mg/L；4th step, mixture enters in silt particle segregation apparatus and separates, respectively obtains micro-sand and band water greasy filth after separation, and the micro-sand after separation adds Sha Chizhong, and the band water greasy filth after separation is discharged.
  2. Micro-sand the most according to claim 1 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that coagulant is aluminium polychlorid.
  3. Micro-sand the most according to claim 1 and 2 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that flocculation aid is polyacrylamide.
  4. Micro-sand the most according to claim 1 and 2 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that lytic agent is diesel oil.
  5. Micro-sand the most according to claim 3 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that lytic agent is diesel oil.
  6. Micro-sand the most according to claim 1 and 2 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that in oil field extracted water, oil content is 500mg/L to 1000mg/L, and in oil field extracted water, float is 250mg/L to 300mg/L.
  7. Micro-sand the most according to claim 3 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that in oil field extracted water, oil content is 500mg/L to 1000mg/L, and in oil field extracted water, float is 250mg/L to 300mg/L.
  8. Micro-sand the most according to claim 4 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that in oil field extracted water, oil content is 500mg/L to 1000mg/L, and in oil field extracted water, float is 250mg/L to 300mg/L.
  9. Micro-sand the most according to claim 5 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that in oil field extracted water, oil content is 500mg/L to 1000mg/L, and in oil field extracted water, float is 250mg/L to 300mg/L.
  10. Micro-sand the most according to claim 1 and 2 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that in water purification, the content of float is 8mg/L to 10mg/L, and in water purification, the content of oil is 5mg/L to 10mg/L.
  11. 11. micro-sand according to claim 3 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that in water purification, the content of float is 8mg/L to 10mg/L, and in water purification, the content of oil is 5mg/L to 10mg/L.
  12. 12. micro-sand according to claim 4 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that in water purification, the content of float is 8mg/L to 10mg/L, and in water purification, the content of oil is 5mg/L to 10mg/L.
  13. 13. micro-sand according to claim 5 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that in water purification, the content of float is 8mg/L to 10mg/L, and in water purification, the content of oil is 5mg/L to 10mg/L.
  14. 14. micro-sand according to claim 6 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that in water purification, the content of float is 8mg/L to 10mg/L, and in water purification, the content of oil is 5mg/L to 10mg/L.
  15. 15. micro-sand according to claim 7 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that in water purification, the content of float is 8mg/L to 10mg/L, and in water purification, the content of oil is 5mg/L to 10mg/L.
  16. 16. micro-sand according to claim 8 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that in water purification, the content of float is 8mg/L to 10mg/L, and in water purification, the content of oil is 5mg/L to 10mg/L.
  17. 17. micro-sand according to claim 9 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that in water purification, the content of float is 8mg/L to 10mg/L, and in water purification, the content of oil is 5mg/L to 10mg/L.
  18. 18. micro-sand according to claim 1 and 2 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that sedimentation tank is tube settler, and the liquid level load of sedimentation tank is 15m3/m2H to 25m3/m2h。
  19. 19. micro-sand according to claim 3 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that sedimentation tank is tube settler, and the liquid level load of sedimentation tank is 15m3/m2H to 25m3/m2h。
  20. 20. micro-sand according to claim 4 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that sedimentation tank is tube settler, and the liquid level load of sedimentation tank is 15m3/m2H to 25m3/m2h。
  21. 21. micro-sand according to claim 5 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that sedimentation tank is tube settler, and the liquid level load of sedimentation tank is 15m3/m2H to 25m3/m2h。
  22. 22. micro-sand according to claim 6 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that sedimentation tank is tube settler, and the liquid level load of sedimentation tank is 15m3/m2H to 25m3/m2h。
  23. 23. micro-sand according to claim 7 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that sedimentation tank is tube settler, and the liquid level load of sedimentation tank is 15m3/m2H to 25m3/m2h。
  24. 24. micro-sand according to claim 8 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that sedimentation tank is tube settler, and the liquid level load of sedimentation tank is 15m3/m2H to 25m3/m2h。
  25. 25. micro-sand according to claim 9 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that sedimentation tank is tube settler, and the liquid level load of sedimentation tank is 15m3/m2H to 25m3/m2h。
  26. 26. micro-sand according to claim 10 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that sedimentation tank is tube settler, and the liquid level load of sedimentation tank is 15m3/m2H to 25m3/m2h。
  27. 27. micro-sand according to claim 11 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that sedimentation tank is tube settler, and the liquid level load of sedimentation tank is 15m3/m2H to 25m3/m2h。
  28. 28. micro-sand according to claim 12 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that sedimentation tank is tube settler, and the liquid level load of sedimentation tank is 15m3/m2H to 25m3/m2h。
  29. 29. micro-sand according to claim 13 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that sedimentation tank is tube settler, and the liquid level load of sedimentation tank is 15m3/m2H to 25m3/m2h。
  30. 30. micro-sand according to claim 14 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that sedimentation tank is tube settler, and the liquid level load of sedimentation tank is 15m3/m2H to 25m3/m2h。
  31. 31. micro-sand according to claim 15 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that sedimentation tank is tube settler, and the liquid level load of sedimentation tank is 15m3/m2H to 25m3/m2h。
  32. 32. micro-sand according to claim 16 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that sedimentation tank is tube settler, and the liquid level load of sedimentation tank is 15m3/m2H to 25m3/m2h。
  33. 33. micro-sand according to claim 17 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that sedimentation tank is tube settler, and the liquid level load of sedimentation tank is 15m3/m2H to 25m3/m2h。
  34. 34. micro-sand according to claim 1 and 2 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the particle diameter of micro-sand is that 80 μm are to 120 μm；Or/and, in the mixed liquor in degreasing unit, oil content is 150mg/L to 250mg/L, and in the mixed liquor in degreasing unit, the content of float is 100mg/L to 150mg/L.
  35. 35. micro-sand according to claim 3 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the particle diameter of micro-sand is that 80 μm are to 120 μm；Or/and, in the mixed liquor in degreasing unit, oil content is 150mg/L to 250mg/L, and in the mixed liquor in degreasing unit, the content of float is 100mg/L to 150mg/L.
  36. 36. micro-sand according to claim 4 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the particle diameter of micro-sand is that 80 μm are to 120 μm；Or/and, in the mixed liquor in degreasing unit, oil content is 150mg/L to 250mg/L, and in the mixed liquor in degreasing unit, the content of float is 100mg/L to 150mg/L.
  37. 37. micro-sand according to claim 5 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the particle diameter of micro-sand is that 80 μm are to 120 μm；Or/and, in the mixed liquor in degreasing unit, oil content is 150mg/L to 250mg/L, and in the mixed liquor in degreasing unit, the content of float is 100mg/L to 150mg/L.
  38. 38. micro-sand according to claim 6 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the particle diameter of micro-sand is that 80 μm are to 120 μm；Or/and, in the mixed liquor in degreasing unit, oil content is 150mg/L to 250mg/L, and in the mixed liquor in degreasing unit, the content of float is 100mg/L to 150mg/L.
  39. 39. micro-sand according to claim 7 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the particle diameter of micro-sand is that 80 μm are to 120 μm；Or/and, in the mixed liquor in degreasing unit, oil content is 150mg/L to 250mg/L, and in the mixed liquor in degreasing unit, the content of float is 100mg/L to 150mg/L.
  40. 40. micro-sand according to claim 8 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the particle diameter of micro-sand is that 80 μm are to 120 μm；Or/and, in the mixed liquor in degreasing unit, oil content is 150mg/L to 250mg/L, and in the mixed liquor in degreasing unit, the content of float is 100mg/L to 150mg/L.
  41. 41. micro-sand according to claim 9 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the particle diameter of micro-sand is that 80 μm are to 120 μm；Or/and, in the mixed liquor in degreasing unit, oil content is 150mg/L to 250mg/L, and in the mixed liquor in degreasing unit, the content of float is 100mg/L to 150mg/L.
  42. 42. micro-sand according to claim 10 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the particle diameter of micro-sand is that 80 μm are to 120 μm；Or/and, in the mixed liquor in degreasing unit, oil content is 150mg/L to 250mg/L, and in the mixed liquor in degreasing unit, the content of float is 100mg/L to 150mg/L.
  43. 43. micro-sand according to claim 11 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the particle diameter of micro-sand is that 80 μm are to 120 μm；Or/and, in the mixed liquor in degreasing unit, oil content is 150mg/L to 250mg/L, and in the mixed liquor in degreasing unit, the content of float is 100mg/L to 150mg/L.
  44. 44. micro-sand according to claim 12 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the particle diameter of micro-sand is that 80 μm are to 120 μm；Or/and, in the mixed liquor in degreasing unit, oil content is 150mg/L to 250mg/L, and in the mixed liquor in degreasing unit, the content of float is 100mg/L to 150mg/L.
  45. 45. micro-sand according to claim 13 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the particle diameter of micro-sand is that 80 μm are to 120 μm；Or/and, in the mixed liquor in degreasing unit, oil content is 150mg/L to 250mg/L, and in the mixed liquor in degreasing unit, the content of float is 100mg/L to 150mg/L.
  46. 46. micro-sand according to claim 14 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the particle diameter of micro-sand is that 80 μm are to 120 μm；Or/and, in the mixed liquor in degreasing unit, oil content is 150mg/L to 250mg/L, and in the mixed liquor in degreasing unit, the content of float is 100mg/L to 150mg/L.
  47. 47. micro-sand according to claim 15 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the particle diameter of micro-sand is that 80 μm are to 120 μm；Or/and, in the mixed liquor in degreasing unit, oil content is 150mg/L to 250mg/L, and in the mixed liquor in degreasing unit, the content of float is 100mg/L to 150mg/L.
  48. 48. micro-sand according to claim 16 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the particle diameter of micro-sand is that 80 μm are to 120 μm；Or/and, in the mixed liquor in degreasing unit, oil content is 150mg/L to 250mg/L, and in the mixed liquor in degreasing unit, the content of float is 100mg/L to 150mg/L.
  49. 49. micro-sand according to claim 17 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the particle diameter of micro-sand is that 80 μm are to 120 μm；Or/and, in the mixed liquor in degreasing unit, oil content is 150mg/L to 250mg/L, and in the mixed liquor in degreasing unit, the content of float is 100mg/L to 150mg/L.
  50. 50. micro-sand according to claim 18 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the particle diameter of micro-sand is that 80 μm are to 120 μm；Or/and, in the mixed liquor in degreasing unit, oil content is 150mg/L to 250mg/L, and in the mixed liquor in degreasing unit, the content of float is 100mg/L to 150mg/L.
  51. 51. micro-sand according to claim 19 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the particle diameter of micro-sand is that 80 μm are to 120 μm；Or/and, in the mixed liquor in degreasing unit, oil content is 150mg/L to 250mg/L, and in the mixed liquor in degreasing unit, the content of float is 100mg/L to 150mg/L.
  52. 52. micro-sand according to claim 20 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the particle diameter of micro-sand is that 80 μm are to 120 μm；Or/and, in the mixed liquor in degreasing unit, oil content is 150mg/L to 250mg/L, and in the mixed liquor in degreasing unit, the content of float is 100mg/L to 150mg/L.
  53. 53. micro-sand according to claim 21 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the particle diameter of micro-sand is that 80 μm are to 120 μm；Or/and, in the mixed liquor in degreasing unit, oil content is 150mg/L to 250mg/L, and in the mixed liquor in degreasing unit, the content of float is 100mg/L to 150mg/L.
  54. 54. micro-sand according to claim 22 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the particle diameter of micro-sand is that 80 μm are to 120 μm；Or/and, in the mixed liquor in degreasing unit, oil content is 150mg/L to 250mg/L, and in the mixed liquor in degreasing unit, the content of float is 100mg/L to 150mg/L.
  55. 55. micro-sand according to claim 23 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the particle diameter of micro-sand is that 80 μm are to 120 μm；Or/and, in the mixed liquor in degreasing unit, oil content is 150mg/L to 250mg/L, and in the mixed liquor in degreasing unit, the content of float is 100mg/L to 150mg/L.
  56. 56. micro-sand according to claim 24 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the particle diameter of micro-sand is that 80 μm are to 120 μm；Or/and, in the mixed liquor in degreasing unit, oil content is 150mg/L to 250mg/L, and in the mixed liquor in degreasing unit, the content of float is 100mg/L to 150mg/L.
  57. 57. micro-sand according to claim 25 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the particle diameter of micro-sand is that 80 μm are to 120 μm；Or/and, in the mixed liquor in degreasing unit, oil content is 150mg/L to 250mg/L, and in the mixed liquor in degreasing unit, the content of float is 100mg/L to 150mg/L.
  58. 58. micro-sand according to claim 26 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the particle diameter of micro-sand is that 80 μm are to 120 μm；Or/and, in the mixed liquor in degreasing unit, oil content is 150mg/L to 250mg/L, and in the mixed liquor in degreasing unit, the content of float is 100mg/L to 150mg/L.
  59. 59. micro-sand according to claim 27 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the particle diameter of micro-sand is that 80 μm are to 120 μm；Or/and, in the mixed liquor in degreasing unit, oil content is 150mg/L to 250mg/L, and in the mixed liquor in degreasing unit, the content of float is 100mg/L to 150mg/L.
  60. 60. micro-sand according to claim 28 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the particle diameter of micro-sand is that 80 μm are to 120 μm；Or/and, in the mixed liquor in degreasing unit, oil content is 150mg/L to 250mg/L, and in the mixed liquor in degreasing unit, the content of float is 100mg/L to 150mg/L.
  61. 61. micro-sand according to claim 29 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the particle diameter of micro-sand is that 80 μm are to 120 μm；Or/and, in the mixed liquor in degreasing unit, oil content is 150mg/L to 250mg/L, and in the mixed liquor in degreasing unit, the content of float is 100mg/L to 150mg/L.
  62. 62. micro-sand according to claim 30 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the particle diameter of micro-sand is that 80 μm are to 120 μm；Or/and, in the mixed liquor in degreasing unit, oil content is 150mg/L to 250mg/L, and in the mixed liquor in degreasing unit, the content of float is 100mg/L to 150mg/L.
  63. 63. micro-sand according to claim 31 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the particle diameter of micro-sand is that 80 μm are to 120 μm；Or/and, in the mixed liquor in degreasing unit, oil content is 150mg/L to 250mg/L, and in the mixed liquor in degreasing unit, the content of float is 100mg/L to 150mg/L.
  64. 64. micro-sand according to claim 32 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the particle diameter of micro-sand is that 80 μm are to 120 μm；Or/and, in the mixed liquor in degreasing unit, oil content is 150mg/L to 250mg/L, and in the mixed liquor in degreasing unit, the content of float is 100mg/L to 150mg/L.
  65. 65. micro-sand according to claim 33 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the particle diameter of micro-sand is that 80 μm are to 120 μm；Or/and, in the mixed liquor in degreasing unit, oil content is 150mg/L to 250mg/L, and in the mixed liquor in degreasing unit, the content of float is 100mg/L to 150mg/L.
  66. 66. micro-sand according to claim 1 and 2 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  67. 67. micro-sand according to claim 3 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  68. 68. micro-sand according to claim 4 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  69. 69. micro-sand according to claim 5 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  70. 70. micro-sand according to claim 6 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  71. 71. micro-sand according to claim 7 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  72. 72. micro-sand according to claim 8 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  73. 73. micro-sand according to claim 9 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  74. 74. micro-sand according to claim 10 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  75. 75. micro-sand according to claim 11 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  76. 76. micro-sand according to claim 12 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  77. 77. micro-sand according to claim 13 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  78. 78. micro-sand according to claim 14 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  79. 79. micro-sand according to claim 15 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  80. 80. micro-sand according to claim 16 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  81. 81. micro-sand according to claim 17 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  82. 82. micro-sand according to claim 18 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  83. 83. micro-sand according to claim 19 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  84. 84. micro-sand according to claim 20 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  85. 85. micro-sand according to claim 21 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  86. 86. micro-sand according to claim 22 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  87. 87. micro-sand according to claim 23 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  88. 88. micro-sand according to claim 24 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  89. 89. micro-sand according to claim 25 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  90. 90. micro-sand according to claim 26 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  91. 91. micro-sand according to claim 27 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  92. 92. micro-sand according to claim 28 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  93. 93. micro-sand according to claim 29 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  94. 94. micro-sand according to claim 30 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  95. 95. micro-sand according to claim 31 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  96. 96. micro-sand according to claim 32 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  97. 97. micro-sand according to claim 33 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  98. 98. micro-sand according to claim 34 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  99. 99. micro-sand according to claim 35 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  100. 100. micro-sand according to claim 36 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  101. 101. circulate High-speed clarification method for treating water cut out from oil field according to the micro-sand described in claim 37, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  102. 102. circulate High-speed clarification method for treating water cut out from oil field according to the micro-sand described in claim 38, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  103. 103. circulate High-speed clarification method for treating water cut out from oil field according to the micro-sand described in claim 39, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  104. 104. micro-sand according to claim 40 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  105. 105. micro-sand according to claim 41 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  106. 106. micro-sand according to claim 42 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  107. 107. micro-sand according to claim 43 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  108. 108. micro-sand according to claim 44 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  109. 109. micro-sand according to claim 45 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  110. 110. micro-sand according to claim 46 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  111. 111. micro-sand according to claim 47 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  112. 112. micro-sand according to claim 48 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  113. 113. micro-sand according to claim 49 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  114. 114. micro-sand according to claim 50 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  115. 115. micro-sand according to claim 51 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  116. 116. micro-sand according to claim 52 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  117. 117. micro-sand according to claim 53 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  118. 118. micro-sand according to claim 54 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  119. 119. micro-sand according to claim 55 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  120. 120. micro-sand according to claim 56 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  121. 121. micro-sand according to claim 57 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  122. 122. micro-sand according to claim 58 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  123. 123. micro-sand according to claim 59 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  124. 124. micro-sand according to claim 60 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  125. 125. micro-sand according to claim 61 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  126. 126. micro-sand according to claim 62 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  127. 127. micro-sand according to claim 63 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  128. 128. micro-sand according to claim 64 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  129. 129. micro-sand according to claim 65 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that the stir speed (S.S.) in coagulating basin is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, adding the stir speed (S.S.) in sand pond is 210r/min to 230r/min, and mixing time is 2.0min to 3.0min；Or/and, the stir speed (S.S.) in educating pond is 210r/min to 230r/min, and mixing time is 3.0min to 5.0min.
  130. 130. micro-sand according to claim 1 and 2 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  131. 131. micro-sand according to claim 3 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  132. 132. micro-sand according to claim 4 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  133. 133. micro-sand according to claim 5 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  134. 134. micro-sand according to claim 6 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  135. 135. micro-sand according to claim 7 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  136. 136. micro-sand according to claim 8 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  137. 137. micro-sand according to claim 9 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  138. 138. micro-sand according to claim 10 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  139. 139. micro-sand according to claim 11 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  140. 140. micro-sand according to claim 12 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  141. 141. micro-sand according to claim 13 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  142. 142. micro-sand according to claim 14 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  143. 143. micro-sand according to claim 15 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  144. 144. micro-sand according to claim 16 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  145. 145. micro-sand according to claim 17 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  146. 146. micro-sand according to claim 18 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  147. 147. micro-sand according to claim 19 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  148. 148. micro-sand according to claim 20 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  149. 149. micro-sand according to claim 21 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  150. 150. micro-sand according to claim 22 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  151. 151. micro-sand according to claim 23 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  152. 152. micro-sand according to claim 24 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  153. 153. micro-sand according to claim 25 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  154. 154. micro-sand according to claim 26 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  155. 155. micro-sand according to claim 27 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  156. 156. micro-sand according to claim 28 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  157. 157. micro-sand according to claim 29 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  158. 158. micro-sand according to claim 30 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  159. 159. micro-sand according to claim 31 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  160. 160. micro-sand according to claim 32 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  161. 161. micro-sand according to claim 33 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  162. 162. micro-sand according to claim 34 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  163. 163. micro-sand according to claim 35 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  164. 164. micro-sand according to claim 36 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  165. 165. circulate High-speed clarification method for treating water cut out from oil field according to the micro-sand described in claim 37, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  166. 166. circulate High-speed clarification method for treating water cut out from oil field according to the micro-sand described in claim 38, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  167. 167. circulate High-speed clarification method for treating water cut out from oil field according to the micro-sand described in claim 39, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  168. 168. micro-sand according to claim 40 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  169. 169. micro-sand according to claim 41 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  170. 170. micro-sand according to claim 42 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  171. 171. micro-sand according to claim 43 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  172. 172. micro-sand according to claim 44 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  173. 173. micro-sand according to claim 45 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  174. 174. micro-sand according to claim 46 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  175. 175. micro-sand according to claim 47 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  176. 176. micro-sand according to claim 48 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  177. 177. micro-sand according to claim 49 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  178. 178. micro-sand according to claim 50 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  179. 179. micro-sand according to claim 51 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  180. 180. micro-sand according to claim 52 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  181. 181. micro-sand according to claim 53 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  182. 182. micro-sand according to claim 54 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  183. 183. micro-sand according to claim 55 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  184. 184. micro-sand according to claim 56 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  185. 185. micro-sand according to claim 57 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  186. 186. micro-sand according to claim 58 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  187. 187. micro-sand according to claim 59 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  188. 188. micro-sand according to claim 60 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  189. 189. micro-sand according to claim 61 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  190. 190. micro-sand according to claim 62 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  191. 191. micro-sand according to claim 63 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  192. 192. micro-sand according to claim 64 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  193. 193. micro-sand according to claim 65 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  194. 194. micro-sand according to claim 66 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  195. 195. micro-sand according to claim 67 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  196. 196. micro-sand according to claim 68 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  197. 197. micro-sand according to claim 69 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  198. 198. micro-sand according to claim 70 circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  199. 199. circulate High-speed clarification method for treating water cut out from oil field according to the micro-sand described in claim 71, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  200. 200. circulate High-speed clarification method for treating water cut out from oil field according to the micro-sand described in claim 72, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  201. 201. circulate High-speed clarification method for treating water cut out from oil field according to the micro-sand described in claim 73, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  202. 202. circulate High-speed clarification method for treating water cut out from oil field according to the micro-sand described in claim 74, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  203. 203. circulate High-speed clarification method for treating water cut out from oil field according to the micro-sand described in claim 75, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  204. 204. circulate High-speed clarification method for treating water cut out from oil field according to the micro-sand described in claim 76, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  205. 205. circulate High-speed clarification method for treating water cut out from oil field according to the micro-sand described in claim 77, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  206. 206. circulate High-speed clarification method for treating water cut out from oil field according to the micro-sand described in claim 78, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  207. 207. circulate High-speed clarification method for treating water cut out from oil field according to the micro-sand described in claim 79, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  208. 208. according to Claim 8 described in 0 micro-sand circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  209. 209. according to Claim 8 described in 1 micro-sand circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  210. 210. according to Claim 8 described in 2 micro-sand circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  211. 211. according to Claim 8 described in 3 micro-sand circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  212. 212. according to Claim 8 described in 4 micro-sand circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  213. 213. according to Claim 8 described in 5 micro-sand circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  214. 214. according to Claim 8 described in 6 micro-sand circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  215. 215. according to Claim 8 described in 7 micro-sand circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  216. 216. according to Claim 8 described in 8 micro-sand circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  217. 217. according to Claim 8 described in 9 micro-sand circulation High-speed clarification method for treating water cut out from oil field, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  218. 218. circulate High-speed clarification method for treating water cut out from oil field according to the micro-sand described in claim 90, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  219. 219. circulate High-speed clarification method for treating water cut out from oil field according to the micro-sand described in claim 91, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  220. 220. circulate High-speed clarification method for treating water cut out from oil field according to the micro-sand described in claim 92, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  221. 221. circulate High-speed clarification method for treating water cut out from oil field according to the micro-sand described in claim 93, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  222. 222. circulate High-speed clarification method for treating water cut out from oil field according to the micro-sand described in claim 94, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  223. 223. circulate High-speed clarification method for treating water cut out from oil field according to the micro-sand described in claim 95, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  224. 224. circulate High-speed clarification method for treating water cut out from oil field according to the micro-sand described in claim 96, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  225. 225. circulate High-speed clarification method for treating water cut out from oil field according to the micro-sand described in claim 97, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  226. 226. circulate High-speed clarification method for treating water cut out from oil field according to the micro-sand described in claim 98, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  227. 227. circulate High-speed clarification method for treating water cut out from oil field according to the micro-sand described in claim 99, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  228. 228. circulate High-speed clarification method for treating water cut out from oil field according to the micro-sand described in claim 100, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  229. 229. circulate High-speed clarification method for treating water cut out from oil field according to the micro-sand described in claim 110, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  230. 230. circulate High-speed clarification method for treating water cut out from oil field according to the micro-sand described in claim 111, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  231. 231. circulate High-speed clarification method for treating water cut out from oil field according to the micro-sand described in claim 112, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  232. 232. circulate High-speed clarification method for treating water cut out from oil field according to the micro-sand described in claim 113, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  233. 233. circulate High-speed clarification method for treating water cut out from oil field according to the micro-sand described in claim 114, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  234. 234. circulate High-speed clarification method for treating water cut out from oil field according to the micro-sand described in claim 115, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  235. 235. circulate High-speed clarification method for treating water cut out from oil field according to the micro-sand described in claim 116, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  236. 236. circulate High-speed clarification method for treating water cut out from oil field according to the micro-sand described in claim 117, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  237. 237. circulate High-speed clarification method for treating water cut out from oil field according to the micro-sand described in claim 118, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  238. 238. circulate High-speed clarification method for treating water cut out from oil field according to the micro-sand described in claim 119, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  239. 239. circulate High-speed clarification method for treating water cut out from oil field according to the micro-sand described in claim 120, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  240. 240. circulate High-speed clarification method for treating water cut out from oil field according to the micro-sand described in claim 121, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  241. 241. circulate High-speed clarification method for treating water cut out from oil field according to the micro-sand described in claim 122, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  242. 242. circulate High-speed clarification method for treating water cut out from oil field according to the micro-sand described in claim 123, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  243. 243. circulate High-speed clarification method for treating water cut out from oil field according to the micro-sand described in claim 124, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  244. 244. circulate High-speed clarification method for treating water cut out from oil field according to the micro-sand described in claim 125, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  245. 245. circulate High-speed clarification method for treating water cut out from oil field according to the micro-sand described in claim 126, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  246. 246. circulate High-speed clarification method for treating water cut out from oil field according to the micro-sand described in claim 127, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  247. 247. circulate High-speed clarification method for treating water cut out from oil field according to the micro-sand described in claim 128, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
  248. 248. circulate High-speed clarification method for treating water cut out from oil field according to the micro-sand described in claim 129, it is characterised in that degreasing unit is oil removing pot or oil interceptor；Or/and, silt particle segregation apparatus is hydrocyclone.
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CN104944552B (en) * 2015-07-03 2018-11-30 江苏省环境科学研究院 It is a kind of using slag or sandblasting waste material as the flocculation sedimentation method for treating water of micro- sand
CN104961266A (en) * 2015-07-06 2015-10-07 新疆石油勘察设计研究院（有限公司） Mud-sand separation cyclic utilization apparatus
CN112159018B (en) * 2020-09-25 2022-12-02 中国石油天然气股份有限公司 Pretreatment method for emulsified produced water containing oil and alcohol in gas field
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CN101050008B (en) * 2007-04-04 2010-08-11 新疆时代石油工程有限公司 Method for treating water cut out from oil field
CN201132782Y (en) * 2007-06-28 2008-10-15 姜学文 Purification device for oil-contaminated water and purification system with the device
WO2011121619A1 (en) * 2010-03-29 2011-10-06 Abb S.P.A. Water treatment process for oil and gas fields produced water
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