CN115059420A - Method and system for resourceful treatment of drilling waste mud - Google Patents
Method and system for resourceful treatment of drilling waste mud Download PDFInfo
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- CN115059420A CN115059420A CN202210444345.0A CN202210444345A CN115059420A CN 115059420 A CN115059420 A CN 115059420A CN 202210444345 A CN202210444345 A CN 202210444345A CN 115059420 A CN115059420 A CN 115059420A
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- 239000002699 waste material Substances 0.000 title claims abstract description 276
- 238000005553 drilling Methods 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000007791 liquid phase Substances 0.000 claims abstract description 55
- 238000000926 separation method Methods 0.000 claims abstract description 54
- 239000007790 solid phase Substances 0.000 claims abstract description 53
- 239000007788 liquid Substances 0.000 claims abstract description 52
- 238000003860 storage Methods 0.000 claims abstract description 34
- 238000011010 flushing procedure Methods 0.000 claims abstract description 22
- 238000011084 recovery Methods 0.000 claims abstract description 22
- 238000004064 recycling Methods 0.000 claims abstract description 22
- 206010040844 Skin exfoliation Diseases 0.000 claims abstract description 18
- 230000035618 desquamation Effects 0.000 claims abstract description 18
- 239000012535 impurity Substances 0.000 claims abstract description 9
- 239000002002 slurry Substances 0.000 claims description 81
- 238000003756 stirring Methods 0.000 claims description 57
- 238000002156 mixing Methods 0.000 claims description 27
- 238000001035 drying Methods 0.000 claims description 13
- 239000000701 coagulant Substances 0.000 claims description 12
- 239000007921 spray Substances 0.000 claims description 10
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- 239000003795 chemical substances by application Substances 0.000 claims description 5
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- 238000005189 flocculation Methods 0.000 claims description 3
- 230000016615 flocculation Effects 0.000 claims description 3
- 229920001467 poly(styrenesulfonates) Polymers 0.000 claims description 3
- 229920002401 polyacrylamide Polymers 0.000 claims description 3
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Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/06—Arrangements for treating drilling fluids outside the borehole
- E21B21/063—Arrangements for treating drilling fluids outside the borehole by separating components
- E21B21/065—Separating solids from drilling fluids
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
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- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a resource treatment method and system for drilling waste mud, which comprises a waste mud temporary storage collecting tank for temporarily storing waste mud, wherein the waste mud temporary storage collecting tank is connected with a waste mud flushing desquamation component for flushing impurities in the waste mud, the waste mud flushing desquamation component is connected with a waste mud solid-liquid separation pretreatment component for performing pretreatment before solid-liquid separation on the waste mud, the waste mud solid-liquid separation pretreatment component is connected with a solid-liquid separation component after waste mud pretreatment, and the solid-liquid separation component after waste mud pretreatment is connected with a waste mud recovery storage tank. The method and the system for recycling the drilling waste mud can complete the recycling treatment of the mud, simplify the subsequent processing links, completely separate the dirty oil, the solid-phase waste and the liquid-phase waste, greatly reduce the processing cost and meet the requirements of energy conservation and environmental protection.
Description
Technical Field
The invention belongs to the technical field of environmental engineering, and particularly relates to a method and a system for recycling drilling waste mud.
Background
The drilling mud has the functions of suspending rock debris, balancing formation pressure, transmitting hydrodynamic force, breaking rock, cooling a drilling tool and the like in the process of drilling, and is known as blood for drilling in an oil field.
As drilling progresses, the depth of the well increases and the performance requirements of the drilling mud also increase, so that various chemicals, typically containing heavy metals, oils, bases and other compounds, need to be added to the mud to meet the drilling requirements. In the mud circulation process, waste residues and waste slurry need to be continuously discharged, and the mud is completely discharged after drilling is completed to become the waste slurry. Due to the characteristics of field operation of petroleum drilling, almost all wastes in a construction site are discharged and stored in a waste slurry storage pit, and finally a multiphase stable colloid suspension mixture consisting of clay, a weighting material, various chemical treatment agents, associated sewage, oil water, drill cuttings and the like is formed.
The pollution of the waste drilling mud has the characteristics of large pollution area and wide area due to excellent fluidity of the waste drilling mud; too high pH value of the slurry, high concentration of soluble salt and petroleum influence the structure of the soil and harm the growth of plants; heavy metal ions in the slurry are not easily degraded by passive plants and are finally enriched in a human body through a food chain, so that the health and safety of human are harmed; the COD, BOD and oil content of the slurry are high, and the normal growth of aquatic organisms can be influenced after the slurry enters a water body.
With the enhancement of environmental awareness of people, people pay more attention to the harm of the drilling waste mud, and the current processes for treating the drilling waste mud mainly comprise a chemical solidification method, an MTC conversion technology, a land farming method, drying and burning treatment, biological treatment, and in-pit landfill or reinjection.
After the treatment of the waste slurry can be completed by the method, the resource treatment of the slurry cannot be directly completed, and the solid-phase waste and the liquid-phase waste can be completely separated after the subsequent multi-link treatment, so that the consumed cost is high, and the requirements of energy conservation and environmental protection are not met.
Disclosure of Invention
The invention aims to provide a method and a system for resourcefully treating drilling waste mud, which aim to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a resource treatment system for drilling waste mud comprises a temporary waste mud storage and collection tank for temporarily storing waste mud;
the waste slurry temporary storage collecting tank is connected with a waste slurry flushing and desquamation component for flushing impurities in the waste slurry, the waste slurry flushing and desquamation component is connected with a waste slurry solid-liquid separation pretreatment component for performing solid-liquid separation pretreatment on the waste slurry, the waste slurry solid-liquid separation pretreatment component is connected with a waste slurry pretreatment rear solid-liquid separation component for performing solid-liquid separation after pretreatment, and the waste slurry pretreatment rear solid-liquid separation component is connected with a waste slurry recovery storage tank for storing liquid-phase waste in the waste slurry.
Preferably, the waste slurry flushing and desquamation component and the waste slurry pretreated solid-liquid separation component are jointly connected with a solid-phase slurry burying area, the solid-phase slurry burying area is used for burying solid-phase wastes which cannot be recycled in the waste slurry, the waste slurry pretreated solid-liquid separation component is connected with a solid-phase slurry recycling and stacking area, and the solid-phase slurry recycling and stacking area is used for burying solid-phase wastes which can be recycled in the waste slurry.
Preferably, the waste slurry flushing and desquamation component comprises a vibration filter screen for performing vibration filtration on the waste slurry, and the vibration filter screen is connected with a high-pressure spray gun for flushing the waste slurry.
Preferably, abandonment mud solid-liquid separation preliminary treatment subassembly is including being used for carrying out the sump oil recovery module of retrieving to top layer sump oil, sump oil recovery module is connected with the abandonment mud stirring holding vessel that is used for keeping in before stirring abandonment mud, and fixed mounting has the mixer that is used for carrying out the stirring to abandonment mud on the abandonment mud stirring holding vessel.
Preferably, the dirty oil recovery module is including being used for carrying out the mixing stirring equipment that mixes the stirring to the abandonment mud, mixing stirring equipment is connected with and is used for collecting the stirring and stews the top layer dirty oil gathering machine of back top layer dirty oil.
Preferably, the solid-liquid separation subassembly is including being used for the discarded mud to carry out the plate and frame filter press of filter-pressing after the discarded mud preliminary treatment, the plate and frame filter press is connected with the desilting equipment that is used for carrying out the desilting to the discarded mud.
Preferably, the desilting equipment is connected with the desanding equipment that is used for carrying out the desanding treatment to the waste mud, and its desanding equipment is connected with the high frequency drier that is used for carrying out the high frequency to the waste mud and spin-dries.
A resource treatment method of waste mud is used for a resource treatment system of drilling waste mud, and comprises the following steps:
s1, collecting waste mud
Pumping waste mud generated during drilling into a temporary waste mud storage and collection pool through an external pump unit, and temporarily storing the waste mud through the temporary waste mud storage and collection pool;
s2, washing, removing scraps and diluting the waste slurry
Discharging the waste slurry in the waste slurry temporary storage and collection tank into a vibration filter screen, starting the vibration filter screen and a high-pressure spray gun, filtering the waste slurry by vibration generated by the vibration filter screen, washing the waste slurry by the high-pressure spray gun, feeding the filtered diluted primary liquid-phase waste into a waste slurry solid-liquid separation pretreatment assembly to obtain primary solid-phase waste, and feeding the primary solid-phase waste to a solid-phase slurry burying area for burying;
s3, primary pretreatment before solid-liquid separation
The filtered primary liquid phase waste flows into the mixing and stirring equipment, the mixing and stirring equipment is started to stir the primary liquid phase waste, the gel breaking and destabilizing agent is added into the mixing and stirring equipment, the mixing and stirring equipment is used for stirring the primary liquid phase waste, after the stirring is completed, the standing is carried out for 15-25 minutes, the dirty oil floats on the surface of the primary liquid phase waste, and then the surface dirty oil collector can be started to collect the dirty oil floating on the primary liquid phase waste and recycle the dirty oil.
S4, pretreatment before solid-liquid separation
The deoiled primary liquid-phase waste flows into a waste slurry stirring storage tank, the primary liquid-phase waste in the waste slurry stirring storage tank is stirred by a stirrer, and a flocculating agent and a coagulant aid are added during stirring so that the added flocculating agent and the coagulant aid are uniformly mixed in the primary liquid-phase waste, so that the primary liquid-phase waste is subjected to flocculation precipitation;
s5, solid-liquid separation
Filtering out impurities in the primary liquid phase waste through a plate and frame filter press, a mud removing device and a sand removing device to obtain secondary liquid phase waste and secondary solid phase waste, conveying the secondary solid phase waste to a solid phase mud burying area to be buried, and performing high-frequency drying on the secondary liquid phase waste through a high-frequency drying machine to obtain tertiary liquid phase waste and tertiary solid phase waste, wherein the tertiary liquid phase waste is conveyed into a waste mud recovery storage tank for storage and the tertiary solid phase waste is conveyed into the solid phase mud recovery stacking area for standby.
Preferably, the flocculant is formed by mixing polystyrene sulfonate and polyethylene oxide in a mixing ratio of 2:1, the mass of the flocculant added into each cubic of waste slurry is 100g, the coagulant aid is cationic polyacrylamide, and the mass of the coagulant aid added into each cubic of waste slurry is 75 g.
The invention has the technical effects and advantages that: the method and the system for recycling the drilling waste mud benefit from the arrangement of a waste mud flushing and desquamation component and a solid-liquid separation component after the waste mud is pretreated, the waste mud is subjected to impurity separation and dilution through the waste mud flushing and desquamation component, impurities in the waste mud are filtered through a plate-and-frame filter press, a desquamation device and a desanding device to obtain liquid-phase waste and solid-phase waste, the solid-phase waste is conveyed to a solid-phase mud burying area to be buried, the liquid-phase waste is subjected to high-frequency drying through a high-frequency drying machine to obtain recyclable liquid-phase waste and solid-phase waste, the separation of the liquid-phase mud and the solid-phase mud in the waste mud is realized, the recycling treatment of the mud can be directly completed after the waste mud is treated, the subsequent processing links are simplified, and the solid-phase waste and the liquid-phase waste can be completely separated, the processing cost is greatly reduced, and the requirements of energy conservation and environmental protection are met;
benefit from the setting of sump oil recovery module, through mixing agitated vessel cooperation top layer sump oil collector and broken glue destabilizing agent completion to the collection of sump oil in the abandonment mud to retrieve the sump oil, further improved the resourceful treatment effect of abandonment mud, accord with energy-concerving and environment-protective requirement.
Drawings
FIG. 1 is a schematic block diagram of the present invention;
FIG. 2 is a schematic block diagram of the waste mud flushing desquamation assembly of the present invention;
FIG. 3 is a schematic block diagram of a waste slurry solid-liquid separation pretreatment assembly of the present invention;
FIG. 4 is a schematic block diagram of a solid-liquid separation assembly of the present invention after pretreatment of the waste slurry;
FIG. 5 is a schematic block diagram of a dirty oil recovery module of the present invention.
In the figure: 1. temporarily storing waste slurry in a collecting tank; 2. flushing the desquamation component with waste mud; 201. vibrating the filter screen; 202. a high pressure spray gun; 3. a solid-liquid separation pretreatment component for waste slurry; 301. a waste slurry stirring storage tank; 302. a blender; 4. a solid-liquid separation component after the pretreatment of the waste slurry; 401. a plate-and-frame filter press; 402. a desliming device; 403. sand removing equipment; 404. a high-frequency spin dryer; 5. a solid phase mud burying area; 6. a waste slurry recovery storage tank; 7. a solid phase slurry recovery and stacking area; 8. a dirty oil recovery module; 801. mixing and stirring equipment; 802. surface dirty oil collector.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
The invention provides a resource treatment system for drilling waste mud, which comprises a temporary waste mud storage and collection tank 1 for temporarily storing waste mud, wherein the temporary waste mud storage and collection tank 1 is connected with a waste mud flushing and desquamation component 2 for flushing impurities in the waste mud, the waste mud flushing and desquamation component 2 is connected with a waste mud solid-liquid separation pretreatment component 3 for performing pretreatment before solid-liquid separation on the waste mud, the waste mud solid-liquid separation pretreatment component 3 is connected with a waste mud pretreatment solid-liquid separation component 4 for performing solid-liquid separation after pretreatment, and the waste mud pretreatment solid-liquid separation component 4 is connected with a waste mud recovery and storage tank 6 for storing liquid-phase waste in the waste mud.
Specifically, the waste slurry flushing and chip removing component 2 and the waste slurry pretreated solid-liquid separation component 4 are jointly connected with a solid-phase slurry burying area 5, the solid-phase slurry burying area 5 is used for burying solid-phase wastes which cannot be recycled in the waste slurry, the waste slurry pretreated solid-liquid separation component 4 is connected with a solid-phase slurry recycling and stacking area 7, and the solid-phase slurry recycling and stacking area 7 is used for burying solid-phase wastes which can be recycled in the waste slurry.
Specifically, the waste slurry flushing and desquamation component 2 comprises a vibration filter screen 201 for performing vibration filtration on the waste slurry, and the vibration filter screen 201 is connected with a high-pressure spray gun 202 for flushing the waste slurry.
Specifically, waste mud solid-liquid separation preliminary treatment subassembly 3 is including being used for carrying out the sump oil recovery module 8 of retrieving to top layer sump oil, sump oil recovery module 8 is connected with the waste mud stirring holding vessel 301 that is used for keeping in before stirring waste mud, and fixed mounting has the mixer 302 that is used for carrying out the stirring to waste mud on waste mud stirring holding vessel 301.
Specifically, dirty oil recovery module 8 is including being used for carrying out the mixing stirring equipment 801 that mixes the stirring to the abandonment mud, mixing stirring equipment 801 is connected with and is used for collecting stirring the top layer dirty oil gathering machine 802 of the back top layer dirty oil that stews.
Specifically, the solid-liquid separation assembly 4 after the waste slurry pretreatment comprises a plate-and-frame filter press 401 for performing filter pressing on the waste slurry, and the plate-and-frame filter press 401 is connected with a mud removing device 402 for performing mud removing treatment on the waste slurry.
Specifically, the desliming device 402 is connected with a desanding device 403 for desanding the waste slurry, and the desanding device 403 is connected with a high-frequency drying machine 404 for drying the waste slurry at high frequency.
A resource treatment method of waste mud is used for a resource treatment system of drilling waste mud, and comprises the following steps:
s1, collecting waste mud
Pumping waste mud generated during drilling into a temporary waste mud storage and collection tank 1 through an external pump unit, and temporarily storing the waste mud through the temporary waste mud storage and collection tank 1;
s2, washing, removing scraps and diluting the waste slurry
The waste mud in the waste mud temporary storage collection pool 1 is discharged out of the vibration filter screen 201, the vibration filter screen 201 and the high-pressure spray gun 202 are started, the vibration filter screen 201 generates vibration to filter the waste mud, the high-pressure spray gun 202 washes the waste mud, and the filtered diluted primary liquid-phase waste is sent into the waste mud solid-liquid separation pretreatment component 3, so that primary solid-phase waste is obtained and sent to the solid-phase mud burying area 5 to be buried;
s3, primary pretreatment before solid-liquid separation
The filtered primary liquid-phase waste flows into a mixing and stirring device 801, the mixing and stirring device 801 is started to stir the primary liquid-phase waste, a gel breaking and destabilizing agent is added into the mixing and stirring device 801 to stir the primary liquid-phase waste through the mixing and stirring device 801, standing is carried out for 15-25 minutes after stirring is finished, and when dirty oil floats on the surface of the primary liquid-phase waste, a surface dirty oil collector 802 can be started to collect the dirty oil floating on the primary liquid-phase waste and recover the dirty oil.
S4, pretreatment before solid-liquid separation
The deoiled primary liquid-phase waste flows into a waste slurry stirring storage tank 301, the primary liquid-phase waste in the waste slurry stirring storage tank 301 is stirred through a stirrer 302, and a flocculating agent and a coagulant aid are added during stirring, so that the flocculating agent and the coagulant aid are uniformly mixed in the primary liquid-phase waste, and the primary liquid-phase waste is subjected to flocculation and precipitation;
s5, solid-liquid separation
Impurities in the primary liquid phase waste are filtered out through a plate-and-frame filter press 401, a mud removing device 402 and a sand removing device 403 to obtain secondary liquid phase waste and secondary solid phase waste, the secondary solid phase waste is sent to a solid phase mud burying area 5 to be buried, and then the secondary liquid phase waste is subjected to high-frequency drying through a high-frequency drying machine 404 to obtain tertiary liquid phase waste and tertiary solid phase waste, wherein the tertiary liquid phase waste is sent into a waste mud recovery storage tank 6 to be stored for later use, and the tertiary solid phase waste is sent into a solid phase mud recovery stacking area 7 to be used for later use.
Specifically, the flocculant is formed by mixing polystyrene sulfonate and polyethylene oxide in a mixing ratio of 2:1, the mass of the flocculant added into each cubic of waste slurry is 100g, the coagulant aid is cationic polyacrylamide, and the mass of the coagulant aid added into each cubic of waste slurry is 75 g.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (9)
1. A resource treatment system for drilling waste mud comprises a temporary waste mud storage and collection pool (1) for temporarily storing waste mud;
the method is characterized in that: waste mud collection pit (1) of keeping in is connected with waste mud that is arranged in rinsing impurity in the waste mud and washes desquamation subassembly (2), and waste mud washes desquamation subassembly (2) and is connected with waste mud solid-liquid separation preliminary treatment subassembly (3) that are used for carrying out the preliminary treatment before the solid-liquid separation to waste mud, waste mud solid-liquid separation preliminary treatment subassembly (3) are connected with waste mud preliminary treatment back solid-liquid separation subassembly (4) that are used for carrying out the solid-liquid separation behind the preliminary treatment, and waste mud preliminary treatment back solid-liquid separation subassembly (4) are connected with waste mud recovery storage tank (6) that are arranged in storing waste mud liquid phase waste.
2. The drilling waste mud recycling system according to claim 1, wherein: the solid-liquid separation assembly (4) is connected with the solid-phase mud burying area (5) together after the waste mud flushing and desquamation assembly (2) and the waste mud pretreatment, the solid-phase mud burying area (5) is used for burying solid-phase wastes which cannot be recycled in the waste mud, the solid-liquid separation assembly (4) is connected with the solid-phase mud recycling and stacking area (7) after the waste mud pretreatment, and the solid-phase mud recycling and stacking area (7) is used for burying the solid-phase wastes which can be recycled in the waste mud.
3. The drilling waste mud recycling system according to claim 1, wherein: the waste mud flushing and desquamation component (2) comprises a vibration filter screen (201) for performing vibration filtration on waste mud, and the vibration filter screen (201) is connected with a high-pressure spray gun (202) for flushing the waste mud.
4. The drilling waste mud recycling system according to claim 1, wherein: waste mud solid-liquid separation preliminary treatment subassembly (3) is including being used for carrying out dirty oil recovery module (8) of retrieving to top layer dirty oil, dirty oil recovery module (8) are connected with waste mud stirring holding vessel (301) that are used for stirring the preceding abandonment mud of keeping in, and fixed mounting has mixer (302) that are used for stirring waste mud on waste mud stirring holding vessel (301).
5. The drilling waste mud recycling system according to claim 4, wherein: dirty oil recovery module (8) are including being used for carrying out mixing stirring to waste mud mixing stirring equipment (801), mixing stirring equipment (801) are connected with and are used for collecting stirring after the stirring superficial dirty oil gathering machine (802) of standing the surface layer dirty oil.
6. The drilling waste mud recycling system according to claim 1, wherein: the solid-liquid separation assembly (4) after the waste slurry pretreatment comprises a plate-and-frame filter press (401) for performing filter pressing on the waste slurry, and the plate-and-frame filter press (401) is connected with a mud removing device (402) for performing mud removing treatment on the waste slurry.
7. The drilling waste mud recycling system according to claim 6, wherein: the mud removing equipment (402) is connected with sand removing equipment (403) used for performing sand removing treatment on the waste mud, and the sand removing equipment (403) is connected with a high-frequency drying machine (404) used for performing high-frequency drying on the waste mud.
8. A method for recycling waste mud from drilling wells, which is used in the system for recycling drilling waste mud according to any one of claims 1 to 7, comprising the steps of:
s1, collecting waste mud
Waste mud generated during drilling is pumped into a temporary waste mud storage and collection pool (1) through an external pump unit, and the temporary waste mud is temporarily stored through the temporary waste mud storage and collection pool (1);
s2, washing, removing scraps and diluting the waste slurry
The method comprises the steps that waste mud in a waste mud temporary storage collecting pool (1) is discharged out of a vibration filter screen (201), the vibration filter screen (201) and a high-pressure spray gun (202) are started, the vibration filter screen (201) generates vibration to filter the waste mud, the high-pressure spray gun (202) washes the waste mud, filtered diluted primary liquid-phase waste is sent into a waste mud solid-liquid separation pretreatment component (3), and primary solid-phase waste is obtained and sent to a solid-phase mud burying area (5) to be buried;
s3, primary pretreatment before solid-liquid separation
The filtered primary liquid-phase waste flows into a mixing and stirring device (801), the mixing and stirring device (801) is started to stir the primary liquid-phase waste, a gel breaking and destabilizing agent is added into the mixing and stirring device (801) to stir the primary liquid-phase waste through the mixing and stirring device (801), standing is carried out for 15-25 minutes after stirring is finished, and when dirty oil floats on the surface of the primary liquid-phase waste, a surface dirty oil collector (802) can be started to collect the dirty oil floating on the primary liquid-phase waste and recycle the dirty oil.
S4, pretreatment before solid-liquid separation
The deoiled primary liquid-phase waste flows into a waste slurry stirring storage tank (301), the primary liquid-phase waste in the waste slurry stirring storage tank (301) is stirred through a stirrer (302), and a flocculating agent and a coagulant aid are added during stirring, so that the flocculating agent and the coagulant aid are uniformly mixed in the primary liquid-phase waste, and the primary liquid-phase waste is subjected to flocculation precipitation;
s5, solid-liquid separation
Impurities in the primary liquid phase waste are filtered through a plate-and-frame filter press (401), a mud removing device (402) and a sand removing device (403), secondary liquid phase waste and secondary solid phase waste are obtained, the secondary solid phase waste is conveyed to a solid phase mud burying area (5) to be buried, high-frequency drying is carried out on the secondary liquid phase waste through a high-frequency drying machine (404), tertiary liquid phase waste and tertiary solid phase waste are obtained, the tertiary liquid phase waste is conveyed into a waste mud recycling storage tank (6) to be stored for later use, and the tertiary solid phase waste is conveyed into a solid phase mud recycling storage area (7) to be stored for later use.
9. The method for recycling waste sludge as claimed in claim 8, wherein: the flocculant is formed by mixing polystyrene sulfonate and polyethylene oxide in a mixing ratio of 2:1, the mass of the flocculant added into each cubic of waste slurry is 100g, the coagulant aid is cationic polyacrylamide, and the mass of the coagulant aid added into each cubic of waste slurry is 75 g.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1887752A (en) * | 2006-07-03 | 2007-01-03 | 濮阳市天地人环保工程技术有限公司 | Oil field sludge resource treating process |
| CN101363311A (en) * | 2008-10-07 | 2009-02-11 | 郭学峰 | Technological process for comprehensive treatment for waste drilling fluid following drill for oil-gas field |
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