CN105800823B - Oil-field well-drilling waste water purifies and recycling processing system and technique - Google Patents
Oil-field well-drilling waste water purifies and recycling processing system and technique Download PDFInfo
- Publication number
- CN105800823B CN105800823B CN201610157411.0A CN201610157411A CN105800823B CN 105800823 B CN105800823 B CN 105800823B CN 201610157411 A CN201610157411 A CN 201610157411A CN 105800823 B CN105800823 B CN 105800823B
- Authority
- CN
- China
- Prior art keywords
- waste water
- well
- drilling waste
- chamber
- dosing mouth
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 109
- 239000002351 wastewater Substances 0.000 title claims abstract description 108
- 238000012545 processing Methods 0.000 title claims abstract description 60
- 238000000034 method Methods 0.000 title claims abstract description 42
- 238000004064 recycling Methods 0.000 title claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 81
- 238000000746 purification Methods 0.000 claims abstract description 46
- 230000001112 coagulating effect Effects 0.000 claims abstract description 32
- 230000005484 gravity Effects 0.000 claims abstract description 30
- 238000005345 coagulation Methods 0.000 claims abstract description 24
- 230000015271 coagulation Effects 0.000 claims abstract description 24
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 23
- 238000001914 filtration Methods 0.000 claims abstract description 23
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 21
- 238000002156 mixing Methods 0.000 claims abstract description 21
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000013049 sediment Substances 0.000 claims description 44
- 229910000037 hydrogen sulfide Inorganic materials 0.000 claims description 19
- 235000010323 ascorbic acid Nutrition 0.000 claims description 15
- 230000000855 fungicidal effect Effects 0.000 claims description 14
- 239000000417 fungicide Substances 0.000 claims description 14
- 150000000996 L-ascorbic acids Chemical class 0.000 claims description 13
- 229940123973 Oxygen scavenger Drugs 0.000 claims description 13
- 239000007789 gas Substances 0.000 claims description 12
- 229920002401 polyacrylamide Polymers 0.000 claims description 12
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims description 10
- 238000005189 flocculation Methods 0.000 claims description 10
- 230000016615 flocculation Effects 0.000 claims description 10
- 239000003112 inhibitor Substances 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 238000011010 flushing procedure Methods 0.000 claims description 6
- 238000009288 screen filtration Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 5
- 230000002441 reversible effect Effects 0.000 claims description 4
- 229910000406 trisodium phosphate Inorganic materials 0.000 claims description 4
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 3
- 239000000460 chlorine Substances 0.000 claims description 3
- 229910052801 chlorine Inorganic materials 0.000 claims description 3
- GDSOZVZXVXTJMI-SNAWJCMRSA-N (e)-1-methylbut-1-ene-1,2,4-tricarboxylic acid Chemical compound OC(=O)C(/C)=C(C(O)=O)\CCC(O)=O GDSOZVZXVXTJMI-SNAWJCMRSA-N 0.000 claims description 2
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 239000002068 microbial inoculum Substances 0.000 claims 1
- 238000005260 corrosion Methods 0.000 abstract description 3
- 230000007797 corrosion Effects 0.000 abstract description 3
- 239000008213 purified water Substances 0.000 abstract description 3
- 238000004140 cleaning Methods 0.000 abstract description 2
- 229910021645 metal ion Inorganic materials 0.000 abstract description 2
- 238000004659 sterilization and disinfection Methods 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract 2
- 239000011734 sodium Substances 0.000 description 26
- 239000003921 oil Substances 0.000 description 15
- 238000001556 precipitation Methods 0.000 description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 7
- 229910052760 oxygen Inorganic materials 0.000 description 7
- 239000001301 oxygen Substances 0.000 description 7
- 239000005708 Sodium hypochlorite Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000010865 sewage Substances 0.000 description 5
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical group [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 5
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 description 4
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 239000010779 crude oil Substances 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 239000003337 fertilizer Substances 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 159000000013 aluminium salts Chemical class 0.000 description 2
- 229910000329 aluminium sulfate Inorganic materials 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- 229960005070 ascorbic acid Drugs 0.000 description 2
- 239000011668 ascorbic acid Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 235000001674 Agaricus brunnescens Nutrition 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- 229910021592 Copper(II) chloride Inorganic materials 0.000 description 1
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- GVJNTKYYZXDYAH-UHFFFAOYSA-K [Cu+3].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O Chemical group [Cu+3].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O GVJNTKYYZXDYAH-UHFFFAOYSA-K 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000001684 chronic effect Effects 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 229910001431 copper ion Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000008635 plant growth Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/70—Treatment of water, waste water, or sewage by reduction
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/101—Sulfur compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/10—Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The present invention relates to a kind of purifications of oil-field well-drilling waste water and recycling processing system and technique, and the processing system includes sequentially connected water inlet pipe, coagulation and filtration device, gravity settling chamber, active carbon filter and outlet pipe equipped with dilatation mixing section；The first dosing mouth, the second dosing mouth being arranged in order are equipped on the water inlet pipe before dilatation mixing section；Coagulation and filtration device includes the coagulating chamber being connected to water inlet pipe, filter screen and the collecting chamber being connected to gravity settling chamber, and collecting chamber is set to outside coagulating chamber, and filter screen is between coagulating chamber and collecting chamber；It is equipped with non-return valve and third level dosing mouth successively on the connection water pipe of connection collecting chamber and gravity settling chamber；Gravity settling chamber is directly connected to the entrance of active carbon filter, and the outlet of active carbon filter is connected to outlet pipe.Well-drilling waste water chemical cleaning method process of the present invention includes highly effective coagulation, disinfection, depriving hydrogen sulphide, and Treatment for Reuse process includes chemical deoxidization, metal ion reduction and pipeline corrosion protection.Processing system of the present invention is simple in structure, at low cost, and treatment process is simple and convenient, and processing step is reasonable, realizes well-drilling waste water integrated treatment, purified water can direct emission, can be used for oil field reinjection water again after quenched.
Description
Technical field
The present invention relates to wastewater treatment and utilize technical field, specifically, be related to a kind of purification of oil-field well-drilling waste water with
Recycling processing system and technique.
Background technology
It has a large amount of well-drilling waste waters in oil field development and production process to generate, well-drilling waste water is generated in drilling process
Sewage.The main source of well-drilling waste water includes following a few classes：The dirt generated during mud waste, landwaste and round trip
Water rinses the sewage of ground drilling equipment and power tool generation, and the cooling water for power-equipment.In well-drilling waste water
Impurity and property are formed with drilling mud and nature of ground close relation, i.e., different oil gas fields, different probing area, no
Well depth together, different mud materials, the sewage property formed in drilling process are not quite similar.In general, general drilling well
A large amount of suspended matters, drilling well additive, organic matter, a small amount of sulfide, bacterium, oil, phenol, heavy metal ion are mainly contained in waste water
Deng.The sewage generated in drilling process is deep with coloration, turbidity is high, COD value is high, often with hydrogen sulfide peculiar smell.It is a large amount of discarded
If well-drilling waste water, into river, ocean, farmland, can cause chronic pollution to ecological environment, directly affect dynamic without processing
Plant growth, or even can also directly or indirectly jeopardize human health and life security by food chain.Therefore untreated
Direct emission can cause to seriously endanger to ambient enviroment.
Processing well-drilling waste water method has both at home and abroad at present：Direct emission method, biological treatment, seal in a pit, solid-liquid point
From method etc..But the processing method of above-mentioned several well-drilling waste waters cannot fundamentally solve drilling waste water environmental pollution,
In the presence of the hidden danger of pollution environment, Expenses Cost is also high, is unable to secondary use.
Invention content
It is an object of the invention to be directed to pollute environment, processing cost expense present in existing well-drilling waste water processing procedure
It is high and the above problems such as cannot utilize again, provide a kind of oil-field well-drilling waste water purification and recycling processing system and technique.
According to one embodiment of the invention, a kind of oil-field well-drilling waste water purification and recycling processing system are provided, including successively
Water inlet pipe, coagulation and filtration device, gravity settling chamber, active carbon filter and the outlet pipe of connection；The water inlet pipe is equipped with dilatation
Mixing section is equipped with the first dosing mouth, the second dosing mouth being arranged in order on the water inlet pipe before dilatation mixing section；The coagulation
Filter includes the coagulating chamber being connected to water inlet pipe, filter screen and the collecting chamber being connected to gravity settling chamber, and collecting chamber is set to mixed
Solidifying outdoor, filter screen is between coagulating chamber and collecting chamber；Connection collecting chamber and gravity settling chamber connection water pipe on according to
It is secondary to be equipped with non-return valve and third dosing mouth；The gravity settling chamber is directly connected to the entrance of active carbon filter, activated carbon mistake
The outlet of filter is connected to outlet pipe.
Further, in the purification and recycling processing system provided according to the above embodiment of the present invention, the coagulating chamber
Bottom exported equipped with sediment, spiral agitator is equipped in coagulating chamber.Flocculation sediment produces in the coagulating chamber of coagulation and filtration device
When raw sediment excessively influences filtering water outlet, spiral agitator is opened, by sediment from heavy after being compacted by spiral agitator
Object outlet discharge is dropped.
Further, in the purification and recycling processing system provided according to the above embodiment of the present invention, the collecting chamber
Top be equipped with recoil hole flushing and gas hole.When the excessive shadow of sediment that flocculation sediment generates in the coagulating chamber in coagulation and filtration device
When ringing filtering water outlet, by recoiling, hole flushing backwashes coagulation and filtration device, is used in combination and blows afloat hole blowback, realizes in coagulating chamber and sink
The cleaning of object is dropped.
Preferably, in the purification and recycling processing system provided according to the above embodiment of the present invention, the gas hole
360 degree of rotations are set as, the sediment for being conducive to block filter screen blows off discharge.
Further, in the purification and recycling processing system provided according to the above embodiment of the present invention, the gravity is heavy
The bottom for dropping room is exported equipped with sediment, and the sediment generated in gravity settling chamber is exported by sediment and is discharged.
Preferably, in the purification and recycling processing system provided according to the above embodiment of the present invention, described first adds
Medicine mouth, the second dosing mouth, third dosing mouth bottom be set as baffle-type reverse stop valve, carry out well-drilling waste water processing process
In, well-drilling waste water can be effectively prevent to flow backwards.
According to one embodiment of the invention, provides a kind of oil-field well-drilling waste water purification and reuse treatment process, use are above-mentioned
Oil-field well-drilling waste water purification and recycling processing system, specific treatment process steps described in embodiment are：
(1) well-drilling waste water is with 10-30m3The rate of/hour enters water inlet pipe, and hydrogen sulfide, which is added, in the first dosing mouth inhibits
Agent and fungicide are added aluminum sulfate and polyacrylamide in the second dosing mouth, are tentatively mixed in dilatation mixing section；Wherein, vulcanize
The addition of hydrogen inhibitor is 4-7 times of hydrogen sulfide content in well-drilling waste water, and the addition of fungicide is to keep outlet pipe outflow
Well-drilling waste water in the residual quantity of fungicide be not less than 0.4mg/L, the addition of aluminum sulfate is 300-800mg/L, polyacrylamide
The addition of amine is 10-100mg/L；
(2) it flocculates in the coagulating chamber entered in coagulation and filtration device through the tentatively mixed well-drilling waste water of dilatation mixing section
Precipitation, enters collecting chamber after filter screen filtration, and the well-drilling waste water in collecting chamber enters gravity settling chamber through non-return valve；
(3) well-drilling waste water in collecting chamber enters gravity settling chamber, and oxygen scavenger Na is added in third dosing mouth2SO3With D types
Ascorbic acid, while Na is added in third dosing mouth3PO4And Na3PO2；Wherein, oxygen scavenger Na2SO3It is total with D type ascorbic acids
Addition is 150-200mg/L, oxygen scavenger Na2SO3Addition mass ratio with D type ascorbic acids is 7:3, Na3PO4Addition
Amount is 30-50mg/L, Na3PO2Addition be 5-10mg/L；
(4) flocculation sediment occurs for the well-drilling waste water entered in gravitational settling room, and the well-drilling waste water after flocculation sediment enters
Active carbon filter removes remaining chlorine and organogenous sediment；
(5) by active carbon filter, treated that well-drilling waste water is flowed out by outlet pipe, you can obtain purification it is quenched after
Reinjected water.
The above-mentioned purification provided according to embodiments of the present invention and recycling processing system and technique remove drilling well using sulfur elimination
Remaining hydrogen sulfide in waste water can generate hydrogen sulfide volatile matter dirt again during permanently effective inhibition sediment dehydration storage
Dye, protection operating environment safety, prevents hydrogen sulfide secondary pollution, the mushroom in well-drilling waste water is effectively removed using fungicide, profit
A large amount of suspended matters in well-drilling waste water are removed with coagulant, the high-efficient purification of drilling waste water is realized by above three process.
After oil field is put into production, with the extension of mining time, when oil development enters the middle and later periods, underground crude oil largely takes off
Gas, viscosity are continuously increased, and the energy that oil reservoir itself contains will be constantly consumed, and causing formation pressure constantly to decline makes oil reservoir
Ground pressure is in debt, and moisture in grease production is caused to be significantly increased, and originates in the amount substantially underproduction, the production cost increases.In order to more
Strata pressure caused by mending after crude oil produces declines, and keeps or improve formation pressure, realization oil field Sustainable high yield stable yields, and obtain
Obtain higher recovery ratio, it is necessary to reinjected water be carried out to exploiting field, water filling, which increases recovery ratio, becomes the important means for maintaining oil field to produce
One of.The purification of well-drilling waste water is carried out with recycling processing system and technique and return by the purification provided according to embodiments of the present invention
With processing, purified water uses oxygen scavenger to remove oxygen in water, can reduce corrosive pipeline, while reducing agent is added again, adjusts
Section water outlet pH, treated, and well-drilling waste water has reached reinjected water water standard, increases crude oil output capacity as reinjected water, improves it
Utility value, can not only solving well-drilling waste water, arbitrarily discharge causes problem of environmental pollution, and can also reduce the reinjected water in oil field
Cost has achieved the purpose that reusing sewage, completely eliminates the potential hazard of drilling waste water generation, turns waste into wealth, and has huge
Economic value and environment protection significance.
Processing system of the present invention is simple in structure, and production cost is low, and treatment process is simple and convenient, and processing step is reasonable, passes through
Desulfurization, coagulation, disinfection, modifier treatment realize well-drilling waste water integrated treatment, purified water can direct emission, it is conditioned
It can be additionally used in oil recovery re-injection after processing.
Description of the drawings
Fig. 1 is the structure chart of specific embodiment of the invention oil-field well-drilling waste water purification and recycling processing system.
1, water inlet pipe, 2, coagulation and filtration device, 3, gravity settling chamber, 4, active carbon filter, 5, outlet pipe, 6, dilatation mixing
Section, the 7, first dosing mouth, the 8, second dosing mouth, 9, coagulating chamber, 10, filter screen, 11, collecting chamber, 12, connection water pipe, 13, check
Valve, 14, third dosing mouth, 15, sediment outlet, 16, spiral agitator, 17, recoil hole flushing, 18, gas hole, 19, sediment
Outlet.
Specific implementation mode
Illustrate the specific implementation mode of the present invention below in conjunction with the accompanying drawings：
Referring to Fig. 1, a kind of purification of oil-field well-drilling waste water and recycling processing system, including sequentially connected water inlet pipe 1, coagulation
Filter 2, gravity settling chamber 3, active carbon filter 4 and outlet pipe 5；The water inlet pipe 1 is equipped with dilatation mixing section 6, is expanding
Water inlet pipe 1 before holding mixing section 6 is equipped with the first dosing mouth 7, the second dosing mouth 8 being arranged in order；The coagulation and filtration device
2 include that the coagulating chamber 9 being connected to water inlet pipe 1, filter screen 10 and the collecting chamber 11 being connected to gravity settling chamber 3, collecting chamber 11 are set
Outside coagulating chamber 9, filter screen 10 is between coagulating chamber 9 and collecting chamber 11；In connection collecting chamber 11 and gravity settling chamber 3
It connects and is equipped with non-return valve 13 and third dosing mouth 14 on water pipe 12 successively；The gravity settling chamber 3 directly with active carbon filter 4
Entrance connection, the outlet of active carbon filter 4 is connected to outlet pipe 5.
In the above-mentioned purification of the present invention with recycling processing system, referring to Fig. 1, the bottom of the coagulating chamber 9 is equipped with sediment
Outlet 15, coagulating chamber 9 is interior to be equipped with spiral agitator 16.The sediment that flocculation sediment generates in the coagulating chamber of coagulation and filtration device
When excessive influence filtering water outlet, spiral agitator is opened, sediment is exported into row from sediment after being compacted by spiral agitator
Go out.
In the above-mentioned purification of the present invention with recycling processing system, referring to Fig. 1, the top of the collecting chamber 11 is equipped with backwash
Hole 17 and gas hole 18.When the sediment that flocculation sediment generates in the coagulating chamber in coagulation and filtration device excessively influences filtering water outlet
When, by recoiling, hole flushing backwashes coagulation and filtration device, is used in combination and blows afloat hole blowback, and sediment is clear in realization coagulating chamber
It washes.
In the above-mentioned purification of the present invention with recycling processing system, referring to Fig. 1, the gas hole 18 is set as 360 degree rotation, has
Discharge is blown off conducive to the sediment for blocking filter screen.
In the above-mentioned purification of the present invention with recycling processing system, referring to Fig. 1, the bottom of the gravity settling chamber 3, which is equipped with, to sink
Object outlet 19 drops, and the sediment generated in gravity settling chamber is exported by sediment and is discharged.
In the above-mentioned purification of the present invention and recycling processing system, first dosing mouth 7, the second dosing mouth 8, third dosing
The bottom of mouth 14 is set as baffle-type reverse stop valve, during carrying out well-drilling waste water processing, can effectively prevent well-drilling waste water
It flows backwards.
In the above-mentioned purification of the present invention and recycling processing system, first dosing mouth 7, the second dosing mouth 8, third dosing
Mouth 14 is set as reverse cloth hole, is conducive to liquid and is uniformly mixed in the shortest time with well-drilling waste water.
Referring to Fig. 1, a kind of purification of oil-field well-drilling waste water and reuse treatment process, using the oil field drilling described in above-described embodiment
Well purification of waste water and recycling processing system, specific treatment process steps are：
(1) well-drilling waste water is with 10-30m3The rate of/hour enters water inlet pipe, and hydrogen sulfide, which is added, in the first dosing mouth inhibits
Agent and fungicide are added aluminum sulfate and polyacrylamide in the second dosing mouth, are tentatively mixed in dilatation mixing section；Wherein, vulcanize
The addition of hydrogen inhibitor is 4-7 times of hydrogen sulfide content in well-drilling waste water, and the addition of fungicide is to keep outlet pipe outflow
Well-drilling waste water in the residual quantity of fungicide be not less than 0.4mg/L, the addition of aluminum sulfate is 300-800mg/L, polyacrylamide
The addition of amine is 10-100mg/L；
(2) it flocculates in the coagulating chamber entered in coagulation and filtration device through the tentatively mixed well-drilling waste water of dilatation mixing section
Precipitation, enters collecting chamber after filter screen filtration, and the well-drilling waste water in collecting chamber enters gravity settling chamber through non-return valve；
(3) well-drilling waste water in collecting chamber enters gravity settling chamber, and oxygen scavenger Na is added in third dosing mouth2SO3With D types
Ascorbic acid, while Na is added in third dosing mouth3PO4And Na3PO2；Wherein, oxygen scavenger Na2SO3It is total with D type ascorbic acids
Addition is 150-200mg/L, oxygen scavenger Na2SO3Addition mass ratio with D type ascorbic acids is 7:3, Na3PO4Addition
Amount is 30-50mg/L, Na3PO2Addition be 5-10mg/L；
(4) flocculation sediment occurs for the well-drilling waste water entered in gravitational settling room, and the well-drilling waste water after flocculation sediment enters
Active carbon filter removes remaining chlorine and organogenous sediment；
(5) by active carbon filter, treated that well-drilling waste water is flowed out by outlet pipe, you can obtain purification it is quenched after
Reinjected water.
In the above-mentioned purification of the present invention with reuse treatment process, the Hydrogen Sulfide Inhibitor has 70%CuCl2With 30%
Copper citrate forms, and using the faintly acid of citric acid, the sedimentation function of sulfidion and copper ion can be improved, to hydrogen sulfide
Inhibiting rate is more than 99.5%；The fungicide is sodium hypochlorite, and sodium hypochlorite is level-one fungicide.
In the above-mentioned purification of the present invention with reuse treatment process, aluminum sulfate and polyacrylamide is added in the second dosing mouth,
After aluminium salt and polyacrylamide hydrolyze, a large amount of alumen ustum is generated, is caught by the net of effect and polyacrylamide in aluminium salt electricity
Effect, is very beneficial for the precipitation of sediment, achievees the purpose that efficiently separate.
In the above-mentioned purification of the present invention with reuse treatment process, oxygen scavenger Na is added in third dosing mouth2SO3It is anti-with D types
Bad hematic acid, while Na is added in third dosing mouth3PO4And Na3PO2.Due to oxygen scavenger Na2SO3It is strong also with D type ascorbic acids
Former agent, can quickly remove the oxygen in well-drilling waste water by reduction, and product is mainly sulfate and hydroascorbic acid, and
It can achieve the effect that deep deoxygenization.Na3PO2Also strong reductant has stronger reduction to certain bivalent metal ions
Effect, Na3PO4The corrosion that metallic conduit can effectively be prevented advantageously forms metal protective film, and can adjust well-drilling waste water
PH be not less than 8.3, and keep the reproducibility of water quality, can effectively reduce the rate of corrosion of pipeline.
In the above-mentioned purification of the present invention with reuse treatment process, when sediment blocks filter screen in coagulating chamber, can increase
Discharge pressure, it is necessary to it is counter to be cleaned, well-drilling waste water in emptying filter is exported from the sediment of coagulating chamber bottom, opening eats gas
Hole blowback filter screen, gas hole 360 degree rotation make an overall screening filter screen, are convenient for the discharge of sediment.Pass through the hole flushing that recoils with water
The indoor sediment of coagulation is cleaned, if the sediment generated is excessive, starts spiral agitator, after sediment is compacted
It exports and is discharged from sediment.
Embodiment one：Certain oil-field well-drilling waste water is handled using above-mentioned purification and recycling processing system and technique, it should
The water quality index of well-drilling waste water refers to table 1.
The water quality index table of 1 certain oil-field well-drilling waste water of table
| Water quality index | Water quality index value before well-drilling waste water processing | Unit |
| Suspended matter | 945 | mg/L |
| CODcr | 4853 | mg/L |
| Oil content | 33 | mg/L |
| Dissolved oxygen | 6.45 | mg/L |
| H2S | 13.5 | mg/L |
| pH | 11 | Failed call |
According to the water quality index of above-mentioned well-drilling waste water, well-drilling waste water is with 20m3The rate of/hour enters water inlet pipe, first
Hydrogen Sulfide Inhibitor 80mg/L and fungicide sodium hypochlorite 10mg/L is added in dosing mouth, and aluminum sulfate is added in the second dosing mouth
500mg/L and polyacrylamide 80mg/L enters the coagulating chamber of coagulation and filtration device, by spiral shell after dilatation mixing section tentatively mixing
Rotation blender stirring enters collecting chamber through filter screen filtration, to be that water quality is purified processing.It is removed in the addition of third dosing mouth
Oxygen agent Na2SO3With the total 170mg/L of D type ascorbic acids, wherein NaSO3It accounts for 70%, D type ascorbic acids and accounts for 30%, and in third
Na is added in dosing mouth3PO440mg/L and Na3PO210mg/L is filtered through gravity settling chamber secondary precipitation and active carbon filter
Afterwards, treated well-drilling waste water is obtained.The water quality index of treated well-drilling waste water has reached reinjected water industry requirement, after processing
The water quality index and professional standard of well-drilling waste water《Clastic rock reservoir water water quality fertilizer index and analysis method》(SY/T5329-
2012) it has carried out to mark, comparing result is as shown in table 2.
The water quality index and professional standard contrast table of well-drilling waste water after the processing of table 2
As can be seen from Table 2, oil-field well-drilling waste water provides purification and is carried out with recycling processing system and technique through the invention
It after processing, has obtained sufficiently cleaned up, reinjected water requirement is fully achieved after processing.
Embodiment two：The waste water that certain CBM Drilling generates is carried out using above-mentioned purification and recycling processing system and technique
Processing, the water quality index of waste water refer to table 3
The water quality index table of certain the CBM Drilling waste water of table 3
| Water quality index | Water quality index value before well-drilling waste water processing | Unit |
| Suspended matter | 867 | mg/L |
| CODcr | 3650 | mg/L |
| Oil content | 13 | mg/L |
| Dissolved oxygen | 6.75 | mg/L |
| H2S | 10.5 | mg/L |
| pH | 10 | Failed call |
According to the water quality index of above-mentioned well-drilling waste water, coal bed gas waste water is with 10m3The rate of/hour enters water inlet pipe,
Hydrogen Sulfide Inhibitor 65mg/L and fungicide sodium hypochlorite 6mg/L is added in one dosing mouth, and aluminum sulfate is added in the second dosing mouth
350mg/L and polyacrylamide 50mg/L enters the coagulating chamber of coagulation and filtration device after dilatation mixing section tentatively mixing, passes through
Spiral agitator stirring enters collecting chamber through filter screen filtration, to be that water quality is purified processing.It is added in third dosing mouth
Oxygen scavenger Na2SO3With the total 173mg/L of D type ascorbic acids, wherein NaSO3It accounts for 70%, D type ascorbic acids and accounts for 30%, and in third
Na is added in dosing mouth3PO435mg/L and Na3PO26mg/L is filtered through gravity settling chamber secondary precipitation and active carbon filter
Afterwards, treated well-drilling waste water is obtained.The water quality index of treated well-drilling waste water has reached reinjected water industry requirement, after processing
The water quality index and professional standard of well-drilling waste water《Clastic rock reservoir water water quality fertilizer index and analysis method》(SY/T5329-
2012) it has carried out to mark, comparing result is as shown in table 4.
The water quality index and professional standard contrast table of CBM Drilling waste water after the processing of table 4
As can be seen from Table 4, CBM Drilling generate waste water provides through the invention purification and recycling processing system and
After technique is handled, water quality that treated has reached reinjected water requirement.
Embodiment three：The waste water that certain drilling well field drilling cuttings precipitation is generated using above-mentioned purification and recycling processing system and technique
It is handled, water quality index refers to table 5
The water quality index table of certain drilling cuttings precipitation waste water of table 5
| Water quality index | Water quality index value before well-drilling waste water processing | Unit |
| Suspended matter | 654 | mg/L |
| CODcr | 3200 | mg/L |
| Oil content | 9 | mg/L |
| Dissolved oxygen | 5.59 | mg/L |
| H2S | 8.7 | mg/L |
| pH | 10 | Failed call |
According to the water quality index of above-mentioned drilling cuttings waste water, well-drilling waste water is with 15m3The rate of/hour enters water inlet pipe, first
Hydrogen Sulfide Inhibitor 45mg/L and fungicide sodium hypochlorite 8mg/L is added in dosing mouth, and aluminum sulfate is added in the second dosing mouth
320mg/L and polyacrylamide 50mg/L enters the coagulating chamber of coagulation and filtration device, by spiral shell after dilatation mixing section tentatively mixing
Rotation blender stirring enters collecting chamber through filter screen filtration, to be that water quality is purified processing.It is removed in the addition of third dosing mouth
Oxygen agent Na2SO3With the total 155mg/L of D type ascorbic acids, wherein NaSO3It accounts for 70%, D type ascorbic acids and accounts for 30%, and in third
Na is added in dosing mouth3PO430mg/L and Na3PO25mg/L is filtered through gravity settling chamber secondary precipitation and active carbon filter
Afterwards, treated well-drilling waste water is obtained.The water quality index of treated well-drilling waste water has reached reinjected water industry requirement, after processing
The water quality index and professional standard of well-drilling waste water《Clastic rock reservoir water water quality fertilizer index and analysis method》(SY/T5329-
2012) it has carried out to mark, comparing result is as shown in table 6.
The water quality index and professional standard contrast table of well-drilling waste water after the processing of table 6
As can be seen from Table 6, well-drilling waste water provides purification and is handled with recycling processing system and technique through the invention
Afterwards, it has obtained sufficiently cleaned up, reinjected water requirement is fully achieved after processing.
Above-described embodiment is used for explaining the present invention, rather than limits the invention, in the spirit and right of the present invention
It is required that protection domain in, to any modifications and changes for making of the present invention, both fall within protection scope of the present invention.
Claims (6)
1. a kind of purification of oil-field well-drilling waste water and reuse treatment process, using oil-field well-drilling waste water purification and recycling processing system,
It is characterized in that：Oil-field well-drilling waste water purification and recycling processing system include sequentially connected water inlet pipe, coagulation and filtration device,
Gravity settling chamber, active carbon filter and outlet pipe；The water inlet pipe is equipped with dilatation mixing section, before dilatation mixing section
Water inlet pipe is equipped with the first dosing mouth, the second dosing mouth being arranged in order；The coagulation and filtration device includes being connected to water inlet pipe
Coagulating chamber, filter screen and the collecting chamber being connected to gravity settling chamber, collecting chamber are set to outside coagulating chamber, and filter screen is located at coagulating chamber
Between collecting chamber；It is equipped with non-return valve and third dosing mouth successively on the connection water pipe of connection collecting chamber and gravity settling chamber；
The gravity settling chamber is directly connected to the entrance of active carbon filter, and the outlet of active carbon filter is connected to outlet pipe；Its
Treatment process steps are：
(1) well-drilling waste water is with 10-30m3The rate of/hour enters water inlet pipe, and Hydrogen Sulfide Inhibitor is added in the first dosing mouth and kills
Microbial inoculum is added aluminum sulfate and polyacrylamide in the second dosing mouth, is tentatively mixed in dilatation mixing section；Wherein, hydrogen sulfide inhibits
The addition of agent is 4-7 times of hydrogen sulfide content in well-drilling waste water, and the addition of fungicide is to keep the drilling well of outlet pipe outflow
The residual quantity of fungicide is not less than 0.4mg/L in waste water, and the addition of aluminum sulfate is 300-800mg/L, and polyacrylamide adds
It is 10-100mg/L to enter amount；
(2) enter in the coagulating chamber in coagulation and filtration device to occur to flocculate through the tentatively mixed well-drilling waste water of dilatation mixing section and sink
It forms sediment, collecting chamber is entered after filter screen filtration, the well-drilling waste water in collecting chamber enters gravity settling chamber through non-return valve；
(3) well-drilling waste water in collecting chamber enters gravity settling chamber, and oxygen scavenger Na is added in third dosing mouth2SO3It is anti-bad with D types
Hematic acid, while Na is added in third dosing mouth3PO4And Na3PO2；Wherein, oxygen scavenger Na2SO3With total addition of D type ascorbic acids
Amount is 150-200mg/L, oxygen scavenger Na2SO3Addition mass ratio with D type ascorbic acids is 7:3, Na3PO4Addition be
30-50mg/L, Na3PO2Addition be 5-10mg/L；
(4) flocculation sediment occurs for the well-drilling waste water entered in gravitational settling room, and the well-drilling waste water after flocculation sediment enters activity
Carbon filter removes remaining chlorine and organogenous sediment；
(5) by active carbon filter, treated that well-drilling waste water is flowed out by outlet pipe, you can obtain purification it is quenched after re-injection
Water.
2. oil-field well-drilling waste water purification as described in claim 1 and reuse treatment process, it is characterised in that：The coagulating chamber
Bottom is exported equipped with sediment, and spiral agitator is equipped in coagulating chamber.
3. oil-field well-drilling waste water purification as described in claim 1 and reuse treatment process, it is characterised in that：The collecting chamber
Top is equipped with recoil hole flushing and gas hole.
4. oil-field well-drilling waste water purification as claimed in claim 3 and reuse treatment process, it is characterised in that：The gas hole is set
For 360 degree rotation.
5. oil-field well-drilling waste water purification as described in claim 1 and reuse treatment process, it is characterised in that：The gravitational settling
The bottom of room is exported equipped with sediment.
6. the oil-field well-drilling waste water purification as described in claim 1 to 5 any one and reuse treatment process, it is characterised in that：
First dosing mouth, the second dosing mouth, third dosing mouth bottom be set as baffle-type reverse stop valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610157411.0A CN105800823B (en) | 2016-03-18 | 2016-03-18 | Oil-field well-drilling waste water purifies and recycling processing system and technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610157411.0A CN105800823B (en) | 2016-03-18 | 2016-03-18 | Oil-field well-drilling waste water purifies and recycling processing system and technique |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105800823A CN105800823A (en) | 2016-07-27 |
| CN105800823B true CN105800823B (en) | 2018-09-14 |
Family
ID=56453410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610157411.0A Expired - Fee Related CN105800823B (en) | 2016-03-18 | 2016-03-18 | Oil-field well-drilling waste water purifies and recycling processing system and technique |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105800823B (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2709152C (en) * | 2009-07-08 | 2018-04-03 | Chad Allen Randal | Recycling and treatment process for produced and used flowback fracturing water |
| CN203602430U (en) * | 2013-11-25 | 2014-05-21 | 四川远阳机械有限公司 | Rapid treatment device for drilling wastewater |
| CN203741169U (en) * | 2014-02-19 | 2014-07-30 | 云南英诺威环境工程有限公司 | Flocculation stirring tank with filtering function |
| CN204958596U (en) * | 2015-08-21 | 2016-01-13 | 陕西海默油田服务有限公司 | Flowing back efficient handling of device is returned to fracturing |
-
2016
- 2016-03-18 CN CN201610157411.0A patent/CN105800823B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN105800823A (en) | 2016-07-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101898854B (en) | Method and device for treatment of high-sulfur content and low-permeability oil reservoir produced wastewater | |
| CN203530059U (en) | Treatment system of waste drilling mud filtrate | |
| Zhang et al. | Research progress, problems and prospects of mine water treatment technology and resource utilization in China | |
| CN202072569U (en) | Oilfield sewage treatment device | |
| CN105461121A (en) | Electrocoagulation treatment method of wastewater from oil-field work | |
| CN107473471A (en) | A kind of sewage purifying and treating device | |
| CN203890158U (en) | Mining sewage filtration treatment and reuse device | |
| CN201746417U (en) | Mine water treating and reusing system | |
| CN104045179B (en) | A kind of oil-gas field fracturing that processes returns method and the device thereof of discharge opeing | |
| CN210367290U (en) | Shale gas drilling operation waste water does not fall to ground preprocessing device | |
| CN211311154U (en) | Mine water advanced treatment device | |
| CN105800823B (en) | Oil-field well-drilling waste water purifies and recycling processing system and technique | |
| CN202390268U (en) | In-situ reuse treatment system for downhole directional drilling machine medium circulation water | |
| CN203319797U (en) | Coal mine wastewater treatment device | |
| CN204342581U (en) | Oil drilling water-based mud wastewater treatment equipment | |
| CN205297488U (en) | Improved generation coal bed gas water pumping gas production system | |
| CN112010459B (en) | Treatment device and treatment method for oilfield produced water | |
| CN204714625U (en) | Constructing tunnel advanced sewage treatment system | |
| CN108793515B (en) | Method for treating underground gushing water of gold-antimony mine and discharging water up to standard | |
| CN203683276U (en) | High salt content refractory oil exploitation wastewater treatment system | |
| CN207986890U (en) | A kind of acid washing phosphorization waste water treatment device | |
| CN206872643U (en) | A kind of oil field produced water process skid-mounted device of combined type | |
| RU87697U1 (en) | SYSTEM OF CLEANING OF GROUND WATER WITH A LOW OXIDATIVE-REDUCING CAPACITY, ADDITIONALLY ADDITIONAL AND FOR RETAINING ANTROPOLOGICAL EXPOSURE TO HARMFUL SUBSTANCES | |
| CN204342627U (en) | A kind of novel shale gas returns discharge opeing waste disposal plant | |
| CN205368096U (en) | Coal bed gas well drilling sludge treatment system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180914 |