CN105645630B - A kind of processing method of the complete well waste of water-based drilling - Google Patents
A kind of processing method of the complete well waste of water-based drilling Download PDFInfo
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- 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
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- 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
- C02F11/008—Sludge treatment by fixation or solidification
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- 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
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- 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
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- 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
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
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- 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
- C02F1/24—Treatment of water, waste water, or sewage by flotation
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- 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
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
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- 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
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- 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
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
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- 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
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- 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
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/06—Sludge reduction, e.g. by lysis
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Abstract
The invention discloses a kind of processing method of the complete well waste of water-based drilling, solve the problems, such as cannot to focus on, effect is poor, resource cannot regenerate and heavy-polluted.This method includes：First broken glue coagulation is carried out to moisture content >=60% waste mud and obtains the first clear liquid and the first mud, the first mud filters to obtain the first filter residue and the first filtrate through first, and the solidification of the first filter residue dries to obtain dry mud；Dry mud is obtained to the solidification sunning of 60% waste mud of moisture content <；First clear liquid removes waste liquid；It carries out the second broken glue to waste liquid to flocculate to obtain the second clear liquid and the second mud, the second mud filters to obtain the second filtrate and the second filter residue through second, and the second filtrate removes waste liquid, and the second filter residue removes waste mud；Third filtrate and third filter residue are obtained by filtration to the second clear liquid air bearing and third, third filter residue removes waste mud；To third filtrate ultrafiltration, obtains ultrafiltration concentrated water and ultrafiltration produces water；Ultrafiltration concentrated water removes the second clear liquid.This method can focus on waste and effect preferably, resource reproducible utilization and environmentally friendly.
Description
Technical field
The present invention relates to oil field environment-protection technical field more particularly to a kind of processing methods of the complete well waste of water-based drilling.
Background technique
The complete well offal treatment of oil drilling is the difficult problem of environmental protection in long-standing problem oil field.The water base drilling completion of oil gas field is discarded
Object refers to that the waste generated during drilling well, complete well and underground work etc., common solid-state castoff refer mainly to waste mud,
Above-mentioned waste mud generally comprises the substances such as drilling mud, landwaste；Common waste liquid include drilling completion sewage, fracturing outlet liquid,
Acidifying solution and flushing fluid etc..Due to the characteristic of the complete well waste of oilfield drilling itself, generally there is quite stable colloidal suspension
The various compositions such as viscous scholar, weighting material, chemical treatments, sewage, sump oil, drilling cuttings, therefore processing difficulty pole are contained in floating body system
Greatly；Wherein, to the biggish main chemical compositions of environmental hazard have acid-base material, oils, salt, each quasi polymer, heavy metal from
The modifiers such as son, the sundries in barite and pitch, above-mentioned pollutant have high chroma, high petroleum-type, high oxygen demand (COD),
The characteristics such as high suspended matter, high salinity are the major pollutants generated in petroleum exploration and development process；If above-mentioned waste without
It crosses processing just to discharge, not only result in waste of resources, but also very big harm can be caused to environment；These wastes cause environment
Influence be mainly manifested in the pollution to surface water and groundwater resources；Lead to hardened (mainly salt, alkali and the rock salt of soil
The influence of layer), it is unfavorable to plant growth, or even can not grow, cause soil that can not return cultivated, causes the waste of soil；It is various heavy
Metal is stranded in soil, influences the growth of plant and the breeding of microorganism, while being enriched with because of plant absorption, jeopardizes people and animals'
Health；Influence (some products after chemical addition agent and biodegrade) to aquatic animal and birds etc..
It is directed to the common treating method packet of the solid-state of the complete well of water-based drilling or the mud of colloidal and drilling cuttings both at home and abroad at present
It includes：Mud, drilling cuttings are subjected to well site solidification landfill, this method solidification is not thorough, and top side waste liquid can not be handled；Or by mud
Slurry, drilling cuttings well site minimizing processing, this method can reduce waste and generate quantity, but the remaining solid waste after decrement is still
It need to be filled on the spot in well site or roping to other places fill, can not fundamentally solve to bore useless harmless treatment requirement；Or it will
The direct place mat well site of mud, drilling cuttings, this method will cause Soil Environmental Pollution.The common treating method of waste liquid includes：By waste water
Natural air dry, time-consuming for this method, and easily leakage causes environmental pollution；Or chemical agent is added and is recycled, this method is easy
Cause secondary chemical contamination；Or by waste water in-situ processing reuse, requirement is not achieved in this method, and finally formed sewage can not
Discharge.
It is expended greatly using existing method in the complete well waste of processing water-based drilling, effect is poor, and resource cannot be preferable
It recycles, environmental pollution is larger, the related request for waste cannot reach Environmental Protection in China method that treated.
Summary of the invention
In view of this, the embodiment of the invention provides a kind of processing method of the complete well waste of water-based drilling, main purpose
It is to solve the problems, such as that the complete well waste of water-based drilling cannot focus on, treatment effect is poor and cannot recycle.
In order to achieve the above objectives, invention broadly provides following technical solutions：
On the one hand, the present invention provides a kind of processing method of the complete well waste of water-based drilling, the waste includes useless
Mud and waste liquid, this approach includes the following steps：
Waste mud to aqueous mass percent more than or equal to 60% carries out the first broken glue coagulation, obtains the first clear liquid and the
First clear liquid is mixed into the waste liquid by one mud；First filtering is carried out to first mud, obtains the first filter residue and the
First filtrate is mixed into the waste liquid for being mixed with the first clear liquid by one filtrate, is solidified to first filter residue and dries to obtain
Dry mud；
Aqueous mass percent is solidified less than 60% waste mud and dries to obtain dry mud；
Second broken glue flocculation is carried out to the waste liquid for being mixed with the first filtrate, obtains the second clear liquid and the second mud, to described the
Two mud carry out the second filtering, obtain the second filtrate and the second filter residue, and second filtrate is mixed into and described is mixed with the first filtrate
Waste liquid, second filter residue is mixed into the waste mud；
Air bearing and third filtering are carried out to second clear liquid, third filtrate and third filter residue is obtained, the third is filtered
Slag is mixed into the waste mud for being mixed with the second filter residue；Ultrafiltration is carried out to the third filtrate, ultrafiltration concentrated water is obtained and ultrafiltration produces water, by institute
It states ultrafiltration concentrated water and is mixed into second clear liquid.
Preferably, the aqueous mass percent of the dry mud is 45%-55%.
Preferably, the first broken glue coagulation is gel breaker and coagulant to be added into waste mud, then obtain through sedimentation
First clear liquid and the first mud.
Preferably, the second broken glue flocculation is gel breaker and flocculant to be added into waste liquid, then obtain the through sedimentation
Two clear liquids and the second mud.
Preferably, first filtering and second filtering are all made of the hardboard that filter cloth mesh number is 200-300 mesh
Frame filter press.
Preferably, the third filtering uses disc filter.
Preferably, the ultrafiltration, which produces water, passes through nanofiltration, obtains nanofiltration concentrated water and nanofiltration produces water.
Preferably, the nanofiltration produces water by reverse osmosis, reverse osmosis concentrated water and reverse osmosis produced water are obtained.
Preferably, the nanofiltration concentrated water and the reverse osmosis concentrated water obtain demineralized water and salts substances through pervaporation.
Compared with prior art, the beneficial effects of the invention are as follows：
The present invention is for the complete well waste of water-based drilling cannot focus on, treatment effect is poor, resource cannot recycle again
Raw and larger environmental pollution technical problem, using by the waste sorting of the complete well of water-based drilling and circular treatment, according to
The form and physical property of waste select suitable filtering technique and carry out the technological means of multistage filtering, have reached water base brill
The waste of the complete well of well can focus on and treatment effect preferably, resource recyclable regenerative and environmentally friendly technology mesh
's.
Detailed description of the invention
Fig. 1 is the process flow chart of the complete well refuse processing method of water-based drilling of the embodiment of the present invention 1；
Fig. 2 is the process flow chart of the complete well refuse processing method of water-based drilling of the embodiment of the present invention 2；
Fig. 3 is the process flow chart of the complete well refuse processing method of water-based drilling of the embodiment of the present invention 3.
Specific embodiment
It is of the invention to reach the technical means and efficacy that predetermined goal of the invention is taken further to illustrate, below in conjunction with
Attached drawing and preferred embodiment, to specific embodiment, technical solution, feature and its effect applied according to the present invention, in detail
Illustrate as after.The special characteristic, structure or feature in multiple embodiments in following the description can be combined by any suitable form.
Embodiment 1
Discarded slurry and drilling cuttings are collected from each drill site of oil gas field, the mud of central treating station is transported to by dedicated collecting cart
Gel breaker and coagulant are added into Slurry Storage pond, reaches brokenly the flocculated effect of glue by coagulation is sufficiently stirred for storage pool, will
Flocculated mixture carries out sedimentation separation and goes out the first clear liquid and the first mud, and the first clear liquid is sent into sewage collecting pool, passes through screw rod
First mud is sent into the high pressure sheet frame filter-pressing device that filter cloth mesh number is 250 mesh and carries out the first filtering and high-efficiency dehydration by booster pump,
The first filter residue and the first filtrate are obtained after filtering, the first filtrate is sent into sewage collecting pool, and the first filter residue is sent into solidifying pool simultaneously
Curing agent is added to be solidified to obtain solidfied material, solidfied material is unloaded to professional airing field, the moisture in solidfied material by drying in the air naturally
Shining evaporation reduces, and the moisture content in solidfied material (mass percent) is down to 50% after tested；
It will be from the work progress such as the first clear liquid and other drilling completions isolated in the complete well discarded slurry of water-based drilling
All waste liquids generated import sewage collecting pool as liquid waste processing, and waste liquid is sent into broken glue coagulation tank by pump, mixed to broken glue
Gel breaker is added in solidifying tank, glue processing is carried out brokenly by catalysis and oxidation reaction, glue is broken and handles the used time 6 hours or so, break Jiao Chu
Flocculant is added into broken glue coagulation tank again after reason to be flocculated and stand 1-2 hours, the second broken glue flocculation process terminates
Afterwards, the second clear liquid and the second mud are isolated to；Second clear liquid is sent into conditioning tank, is by the second mud feeding filter cloth mesh number
The high pressure sheet frame filter-pressing device of 250 mesh carries out the second filtering and high-efficiency dehydration, and the second filter residue and the second filtrate are obtained after filtering, will
Second filtrate is sent into sewage collecting pool, and the second filter residue is sent into Slurry Storage pond；The rate of recovery for obtaining the second clear liquid after tested is
95%, water-quality test the results are shown in Table 1；
Above-mentioned second clear liquid is sent into flotation tank from conditioning tank using air bearing intake pump, the second clear liquid is spent by air bearing
Except suspended matter therein and oily substance, air bearing clear liquid is obtained, flotation tank basis is higher, and air bearing clear liquid flows into intermediate water tank certainly；
The rate of recovery for obtaining above-mentioned air bearing clear liquid after tested is 98%, and water-quality test the results are shown in Table 2；
Using ultrafiltration intake pump by above-mentioned air bearing clear liquid from intermediate water tank through being sent into disc filter and ultrafiltration system, air bearing
Clear liquid first passes through disc filter progress third and third filter residue and third filtrate is obtained by filtration, and above-mentioned third filter residue is sent into sludge
Collecting pit, send third filtrate into ultrafiltration system, removes the smaller suspended matter of partial size and glue in third filtrate by ultrafiltration
Body, obtains ultrafiltration concentrated water and ultrafiltration produces water, and the backwash water feeding conditioning tank of ultrafiltration concentrated water and disc filter send ultrafiltration production water
Enter ultrafiltration water producing tank；Referring to Fig. 1, the rate of recovery for obtaining above-mentioned ultrafiltration production water after tested is for the process flow of the present embodiment
90.5%, water-quality test the results are shown in Table 3.
Embodiment 2
The present embodiment 2 difference from example 1 is that, solidfied material by sunning after dry mud moisture content be 45%；
Ultrafiltration that ultrafiltration obtains is produced water further to filter, process flow referring to fig. 2, specially：Ultrafiltration is produced using nanofiltration intake pump
Water is sent into nanofiltration system, by the sieving actoion of nanofiltration remove ultrafiltration produce in water most divalent salts and a small amount of monovalent salt and
Organic matter, obtains nanofiltration concentrated water and nanofiltration produces water, and nanofiltration concentrated water is sent into nanofiltration concentrated water collecting pit, and nanofiltration is produced water and is sent into nanofiltration
Water producing tank；Nanofiltration is obtained after tested produces calcium ions and magnesium ions concentration in water<100mg/l, total hardness<400mg/l, nanofiltration produce the recycling of water
Rate is 85%, and water-quality test the results are shown in Table 4.
Embodiment 3
The present embodiment 3 and embodiment 2 the difference is that, the dry mud that discarded slurry is solidified and obtained after being dried contains
Water rate is 55%；The nanofiltration that nanofiltration obtains is produced water further to filter, process flow is referring to Fig. 3, specially：Nanofiltration production water is sent
Enter reverse osmosis membrane system, nanofiltration is retained out by the high-precision of reverse osmosis membrane system and produces remaining salt and organic matter in water, is obtained
To reverse osmosis produced water and reverse osmosis concentrated water, reverse osmosis produced water is sent into clear water reserviors, reverse osmosis concentrated water is sent into nanofiltration concentrated water and is collected
The concentrated water of nanofiltration concentrated water collecting pit is sent into vapo(u)rization system and carries out desalination, obtains demineralized water and Nacl by pond；It obtains after tested anti-
The rate of recovery that infiltration produces water is 90%, and water-quality test the results are shown in Table 5.
TDS in following table refers to dissolvability solid amount；COD refers to COD.
Table 1：Pre-process change of water quality
Table 2：Air-float technology change of water quality
Table 3：Disc type filtering+ultrafiltration change of water quality
Table 4：Nanofiltration change of water quality
Table 5：Reverse osmosis water quality variation
By the water quality detection result of table 1 it is found that the waste liquid of the complete well of water-based drilling is after broken glue flocculation process, in waste liquid
COD is reduced to 4200mg/L by 6000mg/L, and the hardness in waste liquid is reduced to 200mg/L by 1000mg/L, and waste liquid is through broken glue wadding
It congeals into for the second clear liquid.
By the water quality detection result of table 2 and table 3 it is found that the second clear liquid pass through air bearing process, remove most suspended substances and
Impurity, after disc type filtering and ultra-filtration process, COD is reduced to 3360mg/L by 4200mg/L in the second clear liquid, and second is clear
Liquid becomes ultrafiltration through ultrafiltration and produces water；Above-mentioned ultrafiltration produces water and meets oil and gas industry standard SY/T5329-2012《Clast shale oil
Hide injection water quality index and analysis method》Reinjection standard.
By the water quality detection result of table 4 it is found that ultrafiltration produce water after nanofiltration process, ultrafiltration produce water in TDS by
14000mg/L is reduced to 7000mg/L, and ultrafiltration produces the COD in water and is reduced to 672mg/L by 3360mg/L, and ultrafiltration produces the chlorine in water
Compound is reduced to 2400mg/L by 3000mg/L, and the ammonia-nitrogen content that ultrafiltration produces in water is reduced to 52.5mg/L, ultrafiltration by 150mg/L
Producing water becomes nanofiltration production water through nanofiltration；Above-mentioned nanofiltration, which produces water, can reach drilling fluid and fracturing fluid with liquid water requirement.
By the water quality detection result of table 5 it is found that nanofiltration produces water after reverse osmosis process, TDS in nanofiltration water by
7000mg/L is down to 350mg/L, and COD is reduced to 67.2mg/L by 672mg/L, and chloride is reduced to 120mg/L by 2400mg/L,
Ammonia-nitrogen content is reduced to 7.9mg/L by 52.5mg/L, and nanofiltration, which produces water, becomes reverse osmosis produced water through reverse osmosis；Above-mentioned reverse osmosis water can
Reach GB8978-1996《Integrated wastewater discharge standard》Primary standard index, and combine GB5084-2005 farmland irrigating water non-salt
Alkali ground standard.
By the variation of the rate of recovery and water quality of water in above-mentioned table 1- table 5 it is found that TDS in the complete well waste liquid of water-based drilling,
COD, chloride and ammonia-nitrogen content are gradually reduced with the design for the treatment of process, are illustrated water base using the processing of the embodiment of the present invention
Its treatment effect is preferable when the method for drilling completion waste liquid disposes waste liquid, and finally obtained water quality is preferable, meets discharge or uses
It is required that having reached national effluent-disposal standard.
When being disposed waste liquid using the method for the embodiment of the present invention, selected according to the form of contained substance in waste liquid and physical property
Reasonable filter type is selected, treatment process is physical treatment, and the extensive chemical medicament that will lead to secondary pollution is not added, adopts
Environmental pollution is reduced with the method for the present invention.
When well waste complete using the method processing water-based drilling of the embodiment of the present invention, by discarded mud, drilling cuttings, drilling well
All sewage generated in the work progress such as complete well sewage, fracturing outlet liquid, acidifying solution and flushing fluid are uniformly focused on,
By reasonable technological design, discarded slurry and waste liquid are subjected to stepwise disposal respectively, obtained pollution-free and reusable
Dry mud and qualified water；The method of the present invention optimization and perfect treatment process, had both reached while having handled solid waste and liquid
The purpose of body waste, and reduce the processing cost of drilling completion waste.
The waste liquid of the complete well of water-based drilling is become by water up to standard using the method for the embodiment of the present invention, mud is become into dry mud；
Wherein, dry mud can be used for smooth location, road foundation laying and brickmaking etc., or is pulled to and is filled using the standard of natural gully construction
Field carries out landfill and makes ground, or carries out planting technique, implements plant ecological reparation；Ultrafiltration, which produces water, can be used for re-injection, and nanofiltration produces water can
Match liquid reuse for drill in fluid, reverse osmosis produced water and demineralized water can be used for irrigating, cultivate or direct emission, crystallize out
Salt can be used as Nacl use；Have when therefore, using the method for the present invention processing complete well waste of water-based drilling turn waste into wealth,
Resource is renewable, resource circulation utilization, reduces the advantages of cost.
In the methods of the invention, ultrafiltration production water is up to standard, can be used for re-injection, and the ultrafiltration production further advanced treating of water is obtained
The water quality that the nanofiltration arrived produces water is more preferable, can meet requirements at the higher level, and nanofiltration produces the reverse osmosis that water is obtained by further advanced treating again
Permeable water quality is more preferable, can meet requirements at the higher level；In ultrafiltration, nanofiltration and reverse osmosis process, the quality up to standard that gained produces water is in
Change of gradient, user of service can select according to the requirement of different quality, and the technique is flexible, can meet different demands.
Disclosed above is only a specific embodiment of the invention, but scope of protection of the present invention is not limited thereto, is appointed
What those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, answer
It is included within the scope of the present invention.Therefore, protection scope of the present invention should be with above-mentioned scope of protection of the claims
It is quasi-.
Claims (8)
1. a kind of processing method of the complete well waste of water-based drilling, the waste includes waste mud and waste liquid, which is characterized in that
This approach includes the following steps：
Waste mud to aqueous mass percent more than or equal to 60% carries out the first broken glue coagulation, obtains the first clear liquid and the first mud
Slurry, is mixed into the waste liquid for first clear liquid；First filtering is carried out to first mud, obtains the first filter residue and the first filter
First filtrate is mixed into the waste liquid for being mixed with the first clear liquid by liquid, is solidified to first filter residue and dries to obtain dry mud,
Wherein, the waste mud includes drilling mud, landwaste, and the waste liquid includes drilling completion sewage, fracturing outlet liquid, acidification
Liquid and flushing fluid；
Aqueous mass percent is solidified less than 60% waste mud and dries to obtain dry mud；
Second broken glue flocculation is carried out to the waste liquid for being mixed with the first filtrate, the second clear liquid and the second mud are obtained, to second mud
Slurry carries out the second filtering, obtains the second filtrate and the second filter residue, and second filtrate is mixed into and described is mixed with the useless of the first filtrate
Second filter residue is mixed into the waste mud by liquid；
Air bearing and third filtering are carried out to second clear liquid, third filtrate and third filter residue is obtained, the third filter residue is mixed
Enter the waste mud for being mixed with the second filter residue；Ultrafiltration is carried out to the third filtrate, ultrafiltration concentrated water is obtained and ultrafiltration produces water, it will be described super
Filter concentrated water is mixed into second clear liquid,
First filtering and second filtering are all made of the high pressure plate and frame filter press that filter cloth mesh number is 200-300 mesh.
2. a kind of processing method of the complete well waste of water-based drilling according to claim 1, which is characterized in that the dry mud
Aqueous mass percent be 45%-55%.
3. a kind of processing method of the complete well waste of water-based drilling according to claim 1, which is characterized in that described first
Broken glue coagulation is gel breaker and coagulant to be added into waste mud, then obtain the first clear liquid and the first mud through sedimentation.
4. a kind of processing method of the complete well waste of water-based drilling according to claim 1, which is characterized in that described second
Broken glue flocculation is gel breaker and flocculant to be added into waste liquid, then obtain the second clear liquid and the second mud through sedimentation.
5. a kind of processing method of the complete well waste of water-based drilling according to claim 1, which is characterized in that the third
Filtering uses disc filter.
6. a kind of processing method of the complete well waste of water-based drilling according to claim 1, which is characterized in that the ultrafiltration
It produces water and passes through nanofiltration, obtain nanofiltration concentrated water and nanofiltration produces water.
7. a kind of processing method of the complete well waste of water-based drilling according to claim 6, which is characterized in that the nanofiltration
Water is produced by reverse osmosis, obtains reverse osmosis concentrated water and reverse osmosis produced water.
8. a kind of processing method of the complete well waste of water-based drilling according to claim 7, which is characterized in that the nanofiltration
Concentrated water and the reverse osmosis concentrated water obtain demineralized water and salts substances through pervaporation.
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| CN106116103A (en) * | 2016-08-17 | 2016-11-16 | 成都诺德源环保科技有限公司 | A kind of broken glue processing method of polysulfonate slurry |
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