CN108529839A - A kind of drilling mud processing method and its system - Google Patents
A kind of drilling mud processing method and its system Download PDFInfo
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- CN108529839A CN108529839A CN201810343771.9A CN201810343771A CN108529839A CN 108529839 A CN108529839 A CN 108529839A CN 201810343771 A CN201810343771 A CN 201810343771A CN 108529839 A CN108529839 A CN 108529839A
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- treatment liquid
- waste
- liquid
- slurries
- solid
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- 238000005553 drilling Methods 0.000 title claims abstract description 39
- 238000003672 processing method Methods 0.000 title claims abstract description 7
- 239000007788 liquid Substances 0.000 claims abstract description 67
- 238000011282 treatment Methods 0.000 claims abstract description 52
- 239000002002 slurry Substances 0.000 claims abstract description 38
- 239000007787 solid Substances 0.000 claims abstract description 35
- 239000002699 waste material Substances 0.000 claims abstract description 33
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 28
- 239000002910 solid waste Substances 0.000 claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 19
- 238000003756 stirring Methods 0.000 claims abstract description 19
- 239000006228 supernatant Substances 0.000 claims abstract description 18
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000013049 sediment Substances 0.000 claims abstract description 17
- 238000011221 initial treatment Methods 0.000 claims abstract description 12
- 239000002244 precipitate Substances 0.000 claims abstract description 9
- 235000009508 confectionery Nutrition 0.000 claims abstract description 4
- 230000018044 dehydration Effects 0.000 claims description 16
- 238000006297 dehydration reaction Methods 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 15
- 238000004140 cleaning Methods 0.000 claims description 10
- 238000001556 precipitation Methods 0.000 claims description 9
- 239000000725 suspension Substances 0.000 claims description 7
- 239000004576 sand Substances 0.000 claims description 6
- 239000012459 cleaning agent Substances 0.000 claims description 5
- 239000012530 fluid Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 2
- 239000002351 wastewater Substances 0.000 description 17
- 239000000203 mixture Substances 0.000 description 12
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 11
- 239000003344 environmental pollutant Substances 0.000 description 11
- 229910052760 oxygen Inorganic materials 0.000 description 11
- 239000001301 oxygen Substances 0.000 description 11
- 231100000719 pollutant Toxicity 0.000 description 11
- 229920000642 polymer Polymers 0.000 description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- 239000000126 substance Substances 0.000 description 10
- 229910001385 heavy metal Inorganic materials 0.000 description 9
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 description 8
- 238000010992 reflux Methods 0.000 description 8
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 7
- 150000008052 alkyl sulfonates Chemical class 0.000 description 7
- TVHALOSDPLTTSR-UHFFFAOYSA-H hexasodium;[oxido-[oxido(phosphonatooxy)phosphoryl]oxyphosphoryl] phosphate Chemical compound [Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[O-]P([O-])(=O)OP([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O TVHALOSDPLTTSR-UHFFFAOYSA-H 0.000 description 7
- 239000002516 radical scavenger Substances 0.000 description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 6
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 6
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- 230000003647 oxidation Effects 0.000 description 6
- 238000007254 oxidation reaction Methods 0.000 description 6
- 229910052698 phosphorus Inorganic materials 0.000 description 6
- 239000011574 phosphorus Substances 0.000 description 6
- 150000003839 salts Chemical class 0.000 description 6
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 5
- 238000010612 desalination reaction Methods 0.000 description 5
- 238000001728 nano-filtration Methods 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 230000001105 regulatory effect Effects 0.000 description 5
- 229910001870 ammonium persulfate Inorganic materials 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000003292 glue Substances 0.000 description 4
- 150000002500 ions Chemical class 0.000 description 4
- 239000010812 mixed waste Substances 0.000 description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 3
- 235000019441 ethanol Nutrition 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000003345 natural gas Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000004065 wastewater treatment Methods 0.000 description 3
- CYDQOEWLBCCFJZ-UHFFFAOYSA-N 4-(4-fluorophenyl)oxane-4-carboxylic acid Chemical compound C=1C=C(F)C=CC=1C1(C(=O)O)CCOCC1 CYDQOEWLBCCFJZ-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 238000005119 centrifugation Methods 0.000 description 2
- 230000001112 coagulating effect Effects 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000010808 liquid waste Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000000053 physical method Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 229940005581 sodium lactate Drugs 0.000 description 2
- 239000001540 sodium lactate Substances 0.000 description 2
- 235000011088 sodium lactate Nutrition 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- ZZUUMCMLIPRDPI-UHFFFAOYSA-N 2-hydroxypropanoic acid;sodium Chemical compound [Na].CC(O)C(O)=O ZZUUMCMLIPRDPI-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- YUWBVKYVJWNVLE-UHFFFAOYSA-N [N].[P] Chemical compound [N].[P] YUWBVKYVJWNVLE-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 239000010786 composite waste Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000002920 hazardous waste Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005374 membrane filtration Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 229910052976 metal sulfide Inorganic materials 0.000 description 1
- 239000000693 micelle Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 125000000101 thioether group Chemical group 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/02—Biological treatment
- C02F11/04—Anaerobic treatment; Production of methane by such processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/127—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering by centrifugation
-
- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/442—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
-
- 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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
-
- 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
- C02F2101/16—Nitrogen compounds, e.g. ammonia
-
- 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
- C02F2101/30—Organic compounds
-
- 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
- C02F2101/30—Organic compounds
- C02F2101/32—Hydrocarbons, e.g. oil
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
- C02F2201/007—Modular design
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Treatment Of Sludge (AREA)
Abstract
The present invention relates to material transportation arts, especially disclose a kind of drilling mud processing method and its system, include the following steps：Primary treatment liquid is prepared, then slurries are heated to 70 75 DEG C by the slurries for being 5% 20% at solid waste content by Slurry confection with steam；Primary treatment liquid is precipitated, 2% 5% pretreating agent is added into slurries, is stood after stirring evenly, single treatment liquid solid waste is made fully to precipitate；Two stage treatment liquid is prepared, the supernatant after primary treatment liquid precipitate is discharged into primary waste liquid tank after carbon filter filters, sediment plus water are prepared into the two stage treatment liquid that solid waste content is 10% 20%；Two stage treatment liquid is precipitated, 5% 10% advanced treatment agent is added into two stage treatment liquid, is stood after stirring evenly, the solid sediment in after-treatment liquid is made fully to precipitate.
Description
Technical field
The invention belongs to drilling mud treatment technology apparatus field, more particularly, to a kind of drilling mud processing method and its
System.
Background technology
Drilling mud is the mixture of the compositions such as oil, water, high molecular polymer, salt, additive, landwaste, in oilfield exploitation
Drillng operation in play a very important role, such as cooling drill bit and drilling cuttings, prevent from collapsing, close drilling well, equilibrium strata pressure,
Broken rock, entrainment landwaste etc..To maintain the quality of drillng operation, drilling mud constantly to replace, thus generates and largely contain
The waste mud of the harmful substances such as oil, heavy metal, high polymer.Drilling waste mud is to be put into hazardous waste, it is necessary to which outward transport is properly located
It sets.
Currently, drilling mud treatment technology is concentrated mainly on mud solid controlling and the aspect of waste water recycling two, the former merely with
The physical methods combination chemical coagulation such as vibrating screen, centrifugation, press filtration realizes water and solid particle separation in mud, reduces mud
Solid content in circulation fluid stabilizes the proportion of drilling mud；Water reuse deep oxidation and film mistake of the latter to generation
The methods of filter carries out preliminary treatment and is used further to prepare new drilling mud.
The mud solids waste generated in drilling mud processing procedure but lacks effective processing method, in solid-liquid point
Mud solids waste from generation reduces moisture through physical methods such as centrifugation, press filtrations, but still contains a large amount of nuisances
The harmful substances such as matter, or even oil, high polymer, heavy metal are concentrated mainly in the micelle for the mud solid waste isolated.
Currently, solidification, which is waste mud, often uses method of disposal, it is directly added into curing agent in untreated waste mud, absorbs water
Divide and is frozen into solid.The method can short term preservation mud, but carried secretly in mud be mostly soluble pollutants, there are long-term leakages
Danger solid waste safe disposal is not implemented in the risk of pollution.
Invention content
In order to make up defect of the above-mentioned gas conveying material in terms of pressure control, the present invention proposes at a kind of drilling mud
Reason method.
Its technical solution is that a kind of drilling mud handles charging method, is included the following steps：
Primary treatment liquid is prepared, by Slurry confection at the slurries that solid waste content is 5%-20%, then by slurries
It is heated to 70-75 DEG C with steam；
Primary treatment liquid is precipitated, the pretreating agent of 2%-5% is added into slurries, is stood after stirring evenly, makes once to locate
Reason liquid solid waste fully precipitates；
Two stage treatment liquid is prepared, the supernatant after primary treatment liquid precipitate is discharged into primary waste liquid after carbon filter filters
Sediment plus water are prepared into the two stage treatment liquid that solid waste content is 10%-20% by tank；
Two stage treatment liquid is precipitated, the advanced treatment agent of 5%-10% is added into two stage treatment liquid, is stood after stirring evenly,
The solid sediment in after-treatment liquid is set fully to precipitate；
Supernatant is contributed, and above-mentioned precipitation supernatant filters off through carbon and removes solid suspension, is discharged into waste tank and waits for into one
Step processing；
The slurries of solid content 10~20% are made in pulp sediment three times, and stirring is sufficiently mixed, and are transferred to dehydration dress
It sets, drilling mud is sufficiently rinsed, and becomes the sand of sanitary safe；Dehydration liquid can be used for cleaning again, it can also be used to prepare pre-
Inorganic agent or cleaning agent.
Description of the drawings
Fig. 1 is a kind of flow diagram of embodiment of the method for the present invention；
Fig. 2 is a kind of flow diagram for the equipment for implementing the method for the present invention.
Specific implementation mode
Explanation is explained in detail to the structure of the present invention below in conjunction with the accompanying drawings.
As shown in Figure 1, one embodiment of the present invention.
A kind of drilling mud processing method, includes the following steps：
Primary treatment liquid is prepared, by Slurry confection at the slurries that solid waste content is 5%-20%, then by slurries
It is heated to 70-75 DEG C with steam；
Primary treatment liquid is precipitated, the pretreating agent of 2%-5% is added into slurries, is stood after stirring evenly, makes once to locate
Reason liquid solid waste fully precipitates；
Two stage treatment liquid is prepared, the supernatant after primary treatment liquid precipitate is discharged into primary waste liquid after carbon filter filters
Sediment plus water are prepared into the two stage treatment liquid that solid waste content is 10%-20% by tank；
Two stage treatment liquid is precipitated, the advanced treatment agent of 5%-10% is added into two stage treatment liquid, is stood after stirring evenly,
The solid sediment in after-treatment liquid is set fully to precipitate；
Supernatant is contributed, and above-mentioned precipitation supernatant filters off through carbon and removes solid suspension, is discharged into waste tank and waits for into one
Step processing；
The slurries of solid content 10~20% are made in pulp sediment three times, and stirring is sufficiently mixed, and are transferred to dehydration dress
It sets, drilling mud is sufficiently rinsed, and becomes the sand of sanitary safe；Dehydration liquid can be used for cleaning again, it can also be used to prepare pre-
Inorganic agent or cleaning agent.
The drilling mud total system of the present invention is by pretreatment, depth of mud removing, mud cleans and dehydration, waste liquid
Five biological treatment, waste liquid advanced treating and reuse units form, and include the following steps：
1) drilling mud pre-processes：It carries out first repulped, temperature is raised simultaneously, to improve circulation oily in mud
The solubility of property and salt and high polymer etc..Ammonium persulfate oxidation is recycled, high molecular polymer in mud is destroyed, beats
Broken colloform texture, and under combining the cleaning action of alkylsulfonate and Quadrafos to clean mud oiliness pollutant from sand grains
Come.
2) depth of mud is removed：Most oil, glue and polymer are removed by pretreated mud solid waste, again
Additional clean agent, secondary cleaning mainly remove the insoluble composition of remaining oiliness.
3) mud cleans and dehydration：It is cleaned through depth, the insoluble composition of oiliness removes substantially, then cleans mud removal with clear water
The impurity such as remaining oil, polymer, pretreating agent, scavenger.
4) biological wastewater treatment：The waste water that mud cleans generate contains COD, ammonia nitrogen, phosphorus, sulfate, heavy metal contaminants etc.,
COD is by contributions such as oil, glue, polymer, organic matter compositions.Pass through the bioremediation removal of anaerobic- anoxic- oxic-carbon filter
Pollutant in waste water.
5) Sewage advanced treatment and reuse：After biological treatment, major pollutants have been efficiently removed in waste water.So
And the salt content in waste water is still higher, to utilize Nanofiltering membrane desalination, reaches waste water recycling standard.To protect nanofiltration
Membrane filtration system, the waste water through biological treatment need to first carry out ozone deep oxidation, improve water quality.
Further, detailed process of the invention is as follows：
(1) solid waste generated with separation of solid and liquid is bored, according to pollutant load, the repulped slurry at solid content 5~20%
Liquid, heating temperature rise to 70~75 DEG C.
(2) pretreating agent is added according to 0.5~2.0% ratio in slurries, the composition of pretreating agent is 30% lactic acid
Sodium, 20% ammonium persulfate, 5% alkylsulfonate, 3% Quadrafos, pH value 8.0~8.5；It is mixed, quiescent setting, supernatant
Liquid is discharged into waste liquid tank 1.
(3) by the repulped slurries for solid content 10~20% of sediment, and depth is added with 5~10% ratios and removes
Agent, depth scavenger composition are 50% ethyl alcohol, 0.2% alkylsulfonate, 0.2% Quadrafos, pH value 7.0~7.5.
(4) sediment is repulped, cleaned with the clear water of 10 times of volumes, supernatants after precipitation for first and second pulp or
Pretreating agent and depth scavenger are prepared, dehydration device (such as decanter centrifuge, filter press) is transferred to, removes moisture removal.Dehydration
Thin stillage recycling does primary or secondary pulp, can also prepare pretreating agent and scavenger.
(5) waste water is discharged into regulating reservoir in waste liquid tank, and the indices for controlling mixed liquor are as follows：COD4000~5000mg/
L, 500~1000mg/L of total sulfur, 100~200mg/L of total nitrogen, total phosphorus<50mg/L, pH 7.0~8.0.
(6) mixing water enters the anaerobism section of biological treatment system after allocating, 35~37 DEG C of temperature, and hydraulic detention time 12~
For 24 hours, the long-chain molecules such as oil content, high polymer are degraded to small molecule, and sulfate is reduced to sulfide, sulfide and solubility gold
Belong to ion and form insoluble petal sulfide, form precipitation, removes soluble metal ion.
(7) enter anaerobic-aerobic section removal of ammonia and nitrogen after composite waste anaerobic pretreatment.30~35 DEG C of temperature, anoxic dissolved oxygen<
0.5mg/L, 24~36h of anoxic hydraulic detention time；Aerobic section dissolved oxygen>2.0mg/L, anoxic hydraulic detention time 12~for 24 hours；It is good
Oxygen to anoxic reflux ratio is 200~400%.Last waste water enters biological carbon filter and further decreases COD and suspended matter.
(8) waste water after biological treatment was removed using ozone pretreatment (5~10mg/L) into nanofiltration desalination system
Salty point, the total salinity of waste water is reduced, control exists<3000mg/L.It is clear to can be used as reuse mud through treated waste water
It washes.
The method that the present invention is combined with chemical oxidation, chemical cleaning, biological treatment, depth harmless treatment is with brill solid controlling
The mud solid waste that system generates, has the following advantages：
1) harmful substance in mud solid waste is efficiently transferred in water and is handled, eliminate oil, glue, polymer, salt, a huge sum of money
The harmful substances such as category, realize the total integration harmless treatment of harmful substance.
2) glue is broken with the oxidation of easily biological-degradable and demulsification system handles mud solid waste, not only effectively remove having for solid waste
Evil substance, and the waste liquid generated can biological treatment.
3) oxidant, demulsifier composition formula meet requirement of the biological treatment to carbon, nitrogen, phosphorus ratio, not only biological treatment
Effect is good, and the removal rate of Pollutants in Wastewater is high, and effluent quality is good.
4) it is sulfide by sulfate reduction using biological sulfate reduction, is combined to form difficulty with soluble heavy metal
Dissolubility efficiently removes heavy metal contaminants.
5) the waste water treatment system effect of multi-stage biological processing-advanced treating-nanofiltration composition is good, and reusing rate is high, without outer
Row, non-secondary pollution.
Another kind embodiment of the invention specifically includes following steps：
1) drilling platforms is configured to solid with the pulp of solid waste that processing generates is bored according to the concentration of pollutant
The slurries of content 5~20% improve slurry temperature to 70~75 DEG C with steam.
2) pretreating agent is added in 0.5~2.0% ratio in a slurries, stirring is sufficiently mixed, quiescent setting 10-
20 points.
3) precipitation supernatant filters off through carbon and removes solid suspension, is discharged into waiting in waste tank 1 and is further processed.
4) secondary pulp sediment, is made the slurries of solid content 10~20%, and depth, which is added, in 5~10% ratios removes
Agent, stirring are sufficiently mixed, quiescent setting.
5) precipitation supernatant filters off through carbon and removes solid suspension, is discharged into waiting in waste tank 2 and is further processed.
6) pulp sediment three times, is made the slurries of solid content 10~20%, and stirring is sufficiently mixed, and is transferred to dehydration dress
It sets, drilling mud is sufficiently rinsed, and becomes the sand of sanitary safe；Dehydration liquid can be used for cleaning again, it can also be used to prepare pre-
Inorganic agent or cleaning agent.
7) it after the waste liquid in waste tank 1 and 2 repeatedly recycles, is discharged into regulating reservoir, forms mixed waste liquor.
8) mixed waste liquor enters biological treatment system organics removal, the heavy metal of anaerobic- anoxic- oxic-carbon filter composition
The pollutants such as ion, nitrogen phosphorus.9) mixed waste liquor after biological treatment handles through ozone deep oxidation further decrease pollutant again
Concentration.
10) it after advanced treating, then handles through nanofiltration desalination, removes salinity in waste liquid, it can reuse.
Pretreating agent composition includes 30% sodium lactate, 20% ammonium persulfate, 5% alkylsulfonate, 3% Quadrafos, pH
Value 8.0~8.5.
Depth scavenger composition include 50% ethyl alcohol, 0.2% alkylsulfonate, 0.2% Quadrafos, pH value 7.0~
7.5。
The optional horizontal centrifuge of dehydration device, belt filter press, plate and frame filter press etc., preferably horizontal centrifuge.
Anaerobism refers to anaerobism sulfate reduction, and sulfate is reduced into sulfide, and indissoluble gold is formed with soluble heavy metal salt
Belong to sulfide precipitation.
The present invention drilling mud depth total system mainly by pretreatment, depth of mud remove, mud cleans with
Five dehydration, waste liquid biological treatment, waste liquid advanced treating and reuse units form,.Concrete technology flow process is as follows：
1) the solid waste water content that drilling mud is generated with processing system is bored<80%, it is repulped in pulp device (1) to match
The slurries of certain solid content are made, the oil content content of slurries is made to control within the scope of one, slurry temperature is improved with steam.
2) pretreating agent is proportionally added into a slurries, stirring is sufficiently mixed, quiescent setting.Supernatant is precipitated through carbon
Filter (2) removes solid suspension, is discharged into waiting in waste liquid tank 1 (7) and is further processed.
3) secondary pulp is carried out in pulp device, the slurries of certain solid content are made, and is proportionally added into depth scavenger,
Stirring is sufficiently mixed, quiescent setting.Supernatant through carbon filter (2) remove solid suspension, be discharged into waste liquid tank 2 (8) wait for into
The processing of one step.
4) pulp three times is carried out with a water or less salt recycle-water in pulp device, the slurries of certain solid content is made,
Stirring is sufficiently mixed, and is transferred to dehydration device (3), and drilling mud is sufficiently rinsed, and becomes the sand of sanitary safe；Being dehydrated liquid can
For cleaning again, it can also be used to prepare pretreating agent or cleaning agent.
5) waste liquid mixing in regulating reservoir (10) in waste liquid tank 1 and waste liquid tank 2, adjusts COD, ammonia nitrogen, total phosphorus, sulfate radical etc.
The mixed liquor of concentration, formation enters processing in biological treatment system (11).
6) mixed liquor is removed through biological treatment, major pollutants, by ozone advanced treating (12), further decreases dirt
Object concentration is contaminated, then, using NF membrane desalination (13), reduces total salinity.Treated water, reuse, cleaning mud or preparation
Liquid.
Biological treatment system in this system is made of anaerobic- anoxic- oxic-four part of biology carbon filter, main to remove
COD, nitrogen phosphate and sulfur acid group, heavy metal ion in waste water.
The biological treatment system of 2 drilling mud solid waste depth total system of embodiment
As shown in Fig. 2, the biological treatment section in the drilling mud depth total system of the present invention, main includes detesting
Oxygen, four part of two-stage anoxic, two-stage aerobic and biological carbon filter.
After mixing waste water adjusts pH, pollutant concentration, nutriment ratio in regulating reservoir, into Anaerobic Treatment (1), connect
Kind refinery factory Anaerobic Treatment sludge, controls temperature and hydraulic detention time.Sulfate is reduced into sulfide, with solubility gold
Belong to ions binding and forms metal sulfide precipitation.
After Anaerobic wastewater treatment, into anaerobic-aerobic processing section (2).Anaerobic-aerobic section is by two-stage anoxic (A) and two-stage
Aerobic (O) is formed.The dissolved oxygen of level-one anoxic controls within the scope of 0.2~0.5mg/L, the dissolved oxygen control of two level anoxic 0~
Within the scope of 0.2mg/L.The aerobic dissolved oxygen of firsts and seconds>4mg/L.The aerobic reflux anaerobism water inlet of level-one, reflux ratio 100%.
The aerobic reflux two level anoxic of two level, reflux ratio 200%.
Finally, waste water enters biological carbon filter (CF), further decreases COD and suspended matter, improves effluent quality.
Advanced treating of the embodiment 3 for the drilling mud of natural gas extraction
The drilling mud solid waste that natural gas extraction is generated with processing is bored is dehydrated, water content 60 through coagulating sedimentation-filter press
~70%, it is 0.5~1.0%, pH 8.5 that gravimetric method, which measures oil content,.
70~75 DEG C are warming up in pulp device, the slurries that a pulp to solid content is 10~20%.Addition 0.5~
1.0% pretreating agent stirs, precipitates, removes supernatant.
To the slurries of solid content 10~20% depth scavenger is added in 5~10% ratios, stirring is sunk in secondary pulp
It forms sediment, remove supernatant.
Pulp sediment three times is made the slurries of solid content 10~20%, is sufficiently stirred, and send de- to filter-press dehydration device
Water.
Pretreating agent formula：30% sodium lactate, 20% ammonium persulfate, 5% alkylsulfonate, 3% Quadrafos, pH value
8.0~8.5.
Depth removes agent prescription：50% ethyl alcohol, 0.2% alkylsulfonate, 0.2% Quadrafos, pH value 7.0~7.5.
Through above-mentioned steps before and after the processing drilling mud solid waste every leading indicator change (10 batches of sample means) such as table 1
It is shown.
The key technical indexes changes before and after 1 drilling mud fixed-end forces of table
Waste liquid mixes in regulating reservoir, and the indices of control control mixed liquor are as follows：COD4000~5000mg/L, always
500~1000mg/L of sulphur, 100~200mg/L of total nitrogen, total phosphorus<50mg/L, pH 7.0~8.0.
Anaerobism section, 35~37 DEG C of temperature, hydraulic detention time 12~for 24 hours.
The dissolved oxygen of level-one anoxic controls within the scope of 0.2~0.5mg/L, and the dissolved oxygen of two level anoxic is controlled in 0~0.2mg/L
In range.The aerobic dissolved oxygen of firsts and seconds>4mg/L.The aerobic reflux anaerobism water inlet of level-one, reflux ratio 100%.Two level is aerobic
Flow back two level anoxic, reflux ratio 200%.
The dissolved oxygen 6.0mg/L of biological carbon filter.Reach reuse standard, liquid waste processing through ozone advanced treating and nanofiltration desalination
Effect is as shown in table 2 (10 batches of sample means)
The key technical indexes after the liquid waste processing that 2 drilling mud fixed-end forces of table generate
This example demonstrates that the lower mud solid waste of oil content of natural gas extraction generation can be effectively treated in the present invention.
By processing, the harmful substances such as oil, heavy metal in mud are removed, and achieve the effect that safe disposal.The waste water of generation passes through
Multistep treatment reaches reuse standard, avoids generating secondary pollution, while reducing water consumption.
Advanced treating of the embodiment 4 for the drilling mud of oil exploitation
The drilling mud solid waste that oil exploitation is generated with processing is bored is dehydrated through coagulating sedimentation-filter press, and water content is 60~
70%, it is 5.0~10.0%, pH8.2~8.8 that gravimetric method, which measures oil content,.
The slurries that solid content is 1~3% are made in pulp, and the slurry that solid content is 2~5% is made in secondary pulp
Liquid, other steps are the same as embodiment 3.
The key technical indexes changes before and after 3 drilling mud fixed-end forces of table
The key technical indexes after the mixed waste liquor processing that 4 drilling mud fixed-end forces of table generate
| Project | Before processing | After processing | Removal rate (%) |
| COD, mg/L | 4256.3 | 83.2 | 98.0 |
| Total nitrogen, mg/L | 193.2 | 8.1 | 95.8 |
| Total phosphorus, mg/L | 23.4 | 1.7 | 92.7 |
| Ammonia nitrogen, mg/L | 182.3 | 0.5 | 99.7 |
| Total salinity, mg/L | 5542.4 | 2637.9 | 52.4 |
| Total chromium, mg/L | 2.5 | - | 100 |
| Total arsenic, mg/kg | 1.4 | - | 100 |
| Mercury, mg/kg | 1.1 | - | 100 |
| Copper, mg/kg | 0.9 | - | 100 |
| Lead, mg/kg | 11.6 | - | 100 |
| Zinc, mg/kg | 23.7 | 0.1 | 99.6 |
| Cadmium, mg/kg | 12.5 | - | 100 |
Above-mentioned technical proposal only embodies the optimal technical scheme of technical solution of the present invention, those skilled in the art
The principle of the present invention is embodied to some variations that some of which part may be made, belongs to the scope of protection of the present invention it
It is interior.
Claims (2)
1. a kind of drilling mud processing method, which is characterized in that include the following steps：
Primary treatment liquid is prepared, by Slurry confection at the slurries that solid waste content is 5%-20%, is then steamed slurries
Vapour is heated to 70-75 DEG C；
Primary treatment liquid is precipitated, the pretreating agent of 2%-5% is added into slurries, is stood after stirring evenly, makes single treatment liquid
Solid waste fully precipitates；
Two stage treatment liquid is prepared, the supernatant after primary treatment liquid precipitate is discharged into primary waste liquid tank after carbon filter filters,
Sediment plus water are prepared into the two stage treatment liquid that solid waste content is 10%-20%；
Two stage treatment liquid is precipitated, the advanced treatment agent of 5%-10% is added into two stage treatment liquid, is stood after stirring evenly, makes two
Solid sediment in secondary treatment fluid fully precipitates；
Supernatant is contributed, and above-mentioned precipitation supernatant filters off through carbon and removes solid suspension, is discharged into waste tank and is waited for further place
Reason；
The slurries of solid content 10~20% are made in pulp sediment three times, and stirring is sufficiently mixed, and are transferred to dehydration device, bore
Well mud is sufficiently rinsed, and becomes the sand of sanitary safe；Dehydration liquid can be used for cleaning again, it can also be used to prepare pretreating agent
Or cleaning agent.
2. a kind of drilling mud processing system for the above method, including pretreatment unit, depth of mud clearing cell, mud
Cleaning and five dewatering unit, waste liquid biological processing unit, waste liquid advanced treating and reuse units.
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Cited By (1)
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