CN209554943U - A kind of integrated purifying processing unit for oil extraction waste water - Google Patents
A kind of integrated purifying processing unit for oil extraction waste water Download PDFInfo
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- CN209554943U CN209554943U CN201920053274.5U CN201920053274U CN209554943U CN 209554943 U CN209554943 U CN 209554943U CN 201920053274 U CN201920053274 U CN 201920053274U CN 209554943 U CN209554943 U CN 209554943U
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- waste water
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Abstract
The utility model relates to a kind of integrated purifying processing units for oil extraction waste water, including oil extraction waste water collecting pit, separator, sedimentation basin and filter device, the oil extraction waste water collecting pit is connected with separator, separator is connected by blender with sedimentation basin, the sedimentation basin is connected by filter device with qualified re-injection pond, the qualified re-injection pond is connect by corresponding pipeline with filter device, the filter device is also connected with waste liquid pool, and the waste liquid pool is also connected with oil extraction waste water collecting pit；The utility model structure is simple, drives the oil droplet in oil extraction waste water by oil-water separator separation of tertiary；The suspended oil in waste water is separated by oil slick seperator, and separative efficiency is 90% or more, it is sufficiently reacted by the medicament of addition with waste water, then it is performed corresponding processing by sedimentation basin and filter, not only avoid oil droplet or oil emulsion blocking filtering device, and improve the service life for the treatment of effeciency and equipment.
Description
Technical field
The utility model relates to a kind of sewage treatment equipment technical field, especially a kind of integration for oil extraction waste water
Purifying processing device.
Background technique
Oil extraction waste water is to return the water flooding to ground together with crude oil in oilfield development process, contain bulk petroleum class
Pollutant, and contain inorganic salts, humic acids, polycyclic aromatic hydrocarbon, volatile phenol and benezene material.Usual this kind of waste water through primary at
Re-injection underground after reason.Domestic oil field development has entered the middle and later periods substantially, and part oil field composite water cut has been up to 90%, sewage
Yield has been far longer than stratum re-injection ability.The standard discharge of oil extraction waste water has become urgent problem.
Oil extraction waste water has following water quality characteristics:
1, oil content is high.Generally 1000-2000mg/L mainly exists in the form of oil slick, dispersed oil and oil emulsion；
2, containing suspended materials such as viscosity particle, flour sand, spun yarns；
3, contain inorganic ion, salt content is mostly thousands of to tens of thousands of；
4, COD (chemical oxygen consumption (COC)) is mostly persistent organic pollutants, and variation water quality is big；
5, after the primary treatments such as oil removal, air bearing, filtering, petroleum-type, SS in waste water (suspend oil extraction waste water in water quality
Object), COD it is still higher, discharge standard cannot be reached.
For the standard discharge for solving the problems, such as oil extraction waste water, researcher begins trying to increase depth science and engineering after primary treatment
Skill is to further decrease the pollutant concentration in waste water, multiselect bioanalysis, absorption method and embrane method etc..
The prior art mainly uses coagulation/air bearing+filtration treatment process oil extraction waste water, the technique intake oil content >
3000mg/L, SS>200mg/L, water after filter are relatively difficult to guarantee reinjection standard oil content<5mg/L, SS < 20mg/L.Especially filtrate tank
Backwashing water oil content, suspension content are high, form great impact load, water after filter water after backwash draining and raw water mixing
Matter further deteriorates.
Chinese patent 200410075791.0 uses kieselguhr adsorption --- flocculation sedimentation --- catalytic oxidation --- medium
Adsorption combined technology handles oil extraction waste water.The shortcomings that technique is that contact oxidation technology is difficult to degrade to polycyclic aromatic hydrocarbon, benzene etc. organic
The removal effect of object is poor, and activated sludge activity in hypersaline environment is lower, and is easy to be impacted, after kieselguhr adsorption saturation
It needs replacing, operating cost is high.
Currently, high oil, water quality characteristics with high salt, the prior art all can not achieve the effective of organic matter for oil extraction waste water
It administers, reaches national integrated wastewater discharge primary standard.
Summary of the invention
In view of the deficiencies of the prior art, the utility model provides a kind of integrated purifying processing dress for oil extraction waste water
It sets, which can be realized separation oil from big to small, separates step by step, avoids oil droplet or oil emulsion blocking device.
The technical solution of the utility model are as follows: a kind of integrated purifying processing unit for oil extraction waste water, including recover the oil
Wastewater collection pond, separator, blender, sedimentation basin and filter device, the oil extraction waste water collecting pit and separator
Be connected, the separator is connected with blender, and the blender is connected with sedimentation basin, the sedimentation basin with
Filter device is connected, and the filter device is connected with qualified re-injection pond, and the qualified re-injection pond passes through regeneration
Filter is connect with filter device, to carry out backwash processing, the filter device to filter device by qualified reinjected water
Also be connected with waste liquid pool, backwash liquid waste enters waste liquid pool through piping, the waste liquid pool also with oil extraction waste water collecting pit phase
Connection；
The separator is used to drive the ternary in oil extraction waste water collecting pit the oil droplet and suspended oil in oil extraction waste water
Carry out separating treatment；Then using the blender to the various medicaments of addition with separate the waste water after oil droplet and suspended oil into
Row is thoroughly mixed, so that waste water is sufficiently reacted with the medicament of addition, is realized that the demulsification, flocculation, pH value of waste water are adjusted, is made to adopt
Oil emulsion in oily waste water is assembled, and forms big oil droplet and react with medicament generation, formation flocculate, and water stratification, from
And it separates；
And precipitating filtration treatment is carried out to the waste water after demulsification, flocculation by sedimentation basin, then by filter device to useless
Water is filtered processing, and the filter device can separate 0.1 μm or more in waste water of oil droplet, final point for realizing grease
From, and be delivered in qualified re-injection pond, regeneration filter carries out reverse process to filter device using qualified reinjected water, instead
Waste liquid after washing is entered in waste liquid pool by pipeline, and is entered in oil extraction waste water collecting pit by pipeline and re-started processing.
Further, the separator includes oil-water separator and oil slick seperator, and the oil-water separator is used
The oil droplet in oil extraction waste water is driven in separation of tertiary；The oil slick seperator is used to separate the suspended oil in waste water.
Further, the oil slick seperator is also connected with the low wet crude surge drum for collecting suspended oil.
Further, it is additionally provided between the oil slick seperator and blender for mixing and the medicament of delivering medicament
Delivery device, the medicinal-solution administration device include grug feeding jar, and with the tank connected dosing pump of dosing.
Further, the sedimentation basin includes identical first sedimentation basin of structure and the second sedimentation basin, and described first
Sedimentation basin and the second sedimentation basin are connected with blender, and first sedimentation basin and the second sedimentation basin are used alternatingly, and pass through
The suspended matters such as greasy filth dross in waste water and waste water are carried out precipitation and separation by the effect of gravitational difference natural subsidence.
Further, the first sedimentation basin lower end is provided with the first dreg-liquid separator, the second sedimentation basin lower end setting
There is the second dreg-liquid separator, first dreg-liquid separator, the second slag-liquid separation device are also connected with waste liquid pool, pass through first
Dreg-liquid separator and the second dreg-liquid separator separate the suspended matters such as greasy filth dross after precipitating, and the slag after separation passes through processing
As solid fuel, isolated devil liquor recovery into waste liquid pool, the waste liquid in waste liquid pool return in oil extraction waste water collecting pit into
Row is handled again.
Further, the filter device includes 2 the first coarse filters and the second coarse filter arranged side by side, with
And 3 the first fine filters arranged side by side, the second fine filter, third fine filters, wherein first coarse filter
It is used to separate 2 μm or more of oil droplet, first fine filter, the second fine filter, third essence mistake with the second coarse filter
Filter is used to filter 0.1 μm or more of oil droplet.
Further, first coarse filter and the second coarse filter are tubular ceramic membrane filter, the tubular type
Purpose ceramic-film filter can be separated by filtration 2 μm or more of oil droplet；First fine filter, the second fine filter, third essence
Filter is modified sheet purpose ceramic-film filter, separable 0.1 μm or more of the oil of the modified sheet purpose ceramic-film filter
Drop, the modified sheet ceramic membrane is surface-treated with ceramic membrane, is made it have physics demulsification function, is made oil extraction waste water
In oil emulsion ceramic membrane surface demulsification, aggregation and separation.
Further, the third fine filter is connected by pipeline with qualified re-injection pond, and the qualification is returned
Water-filled pool is filtered with the first coarse filter, the second coarse filter, third coarse filter, the first essence respectively by corresponding pipeline
Device, the second fine filter, third fine filter are connected, and backwash are carried out to filter using qualified reinjected water, to realize
The regeneration of filter.
Further, the first coarse filter, the second coarse filter, the first fine filter, the second fine filter, third essence mistake
Filter is connected by corresponding pipeline with waste liquid pool.
Further, the medicament is greasy filth cleanser, double-acid ferro-aluminum, calcium hydroxide, pAM.
The utility model has the following beneficial effects: structure is simple, driven in oil extraction waste water by oil-water separator separation of tertiary
Oil droplet；The suspended oil in waste water is separated by oil slick seperator, and separative efficiency is 90% or more, by blender to waste water
It is sufficiently stirred with the various medicaments of addition, to realize the demulsification of grease, flocculation and the adjusting of waste water pH value, passes through precipitating
Pond carries out and slag-liquid separation device realizes the slag-liquid separation of waste water, and slag can be used as solid fuel, and waste liquid is handled again, separately
Outside, waste water is first post-processed by thick, fine filter, avoids oil droplet or oil emulsion blocking filtering device, and utilize conjunction
The reinjected water of lattice carries out backwash to filter, realizes the regeneration of filter, not only increases treatment effeciency, and also improve and set
Standby service life.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Specific embodiment
Specific embodiment of the present utility model is described further with reference to the accompanying drawing:
As shown in Figure 1, a kind of integrated purifying processing unit for oil extraction waste water, including oil extraction waste water collecting pit, oil
Water separator, oil slick seperator, blender, identical first sedimentation basin of 2 structures and the second sedimentation basin and 2 set side by side
The first coarse filter, the second coarse filter and 3 the first fine filters arranged side by side, the second fine filters, third set
Fine filter, waste liquid pool, qualified re-injection pond, the oil extraction waste water collecting pit are connected with oil-water separator, the oil
Water separator is connect with oil slick seperator, and the oil-water separator drives the oil droplet in oil extraction waste water for separation of tertiary；It is described
Oil slick seperator be used to separate suspended oil in waste water, the oil slick seperator is connected with low wet crude surge drum,
To which the suspended oil after separation is collected into low wet crude surge drum.
The oil slick seperator is connect with the first sedimentation basin and the second sedimentation basin respectively by blender, and described first
Sedimentation basin and the second sedimentation basin are used alternatingly, and are acted on by gravitational difference natural subsidence, by the greasy filth dross etc. in waste water and waste water
Suspended matter carries out precipitation and separation.And the first sedimentation basin lower end is provided with the first dreg-liquid separator, under second sedimentation basin
End is provided with the second dreg-liquid separator, outstanding to greasy filth dross etc. after precipitating by the first dreg-liquid separator and the second dreg-liquid separator
Floating object is separated, and the slag after separation is used as solid fuel by processing, and waste liquid enters waste liquid pool, handled again.
It is additionally provided between the oil slick seperator and blender for mixing and the medicinal-solution administration device of delivering medicament,
The medicinal-solution administration device includes grug feeding jar, and with the tank connected dosing pump of dosing, by medicinal-solution administration device by medicament
Launch in conveyance conduit, and enter blender in waste water reaction, wherein the medicament of investment be greasy filth cleanser, bisgallic acid aluminium
Iron, calcium hydroxide, pAM are realized demulsification, flocculation and the adjusting of pH value of waste water using above-mentioned medicament, made in oil extraction waste water
Oil emulsion is assembled, and forms big oil droplet and react with medicament generation, formation flocculate, and water stratification, to separate.
First sedimentation basin and the second sedimentation basin is connected with the first coarse filter, first coarse filter
It is connect with the second coarse filter, 2 coarse filters are tubular ceramic membrane filter, which can
It is separated by filtration 2 μm or more in waste water of oil droplet；
Second coarse filter is connect with the first fine filter, and first fine filter and the second fine filter connect
It connects, second fine filter is connect with third fine filter, and 3 fine filters are modified sheet ceramic membrane
Filter, separable 0.1 μm or more of the oil droplet of the modified sheet purpose ceramic-film filter, the modified sheet ceramic membrane are
It is surface-treated with ceramic membrane, makes it have physics demulsification function, keep the oil emulsion in oil extraction waste water broken in ceramic membrane surface
Cream, aggregation and separation.
The third fine filter is connected with qualified re-injection pond, so that waste water qualified after processing is delivered to conjunction
In lattice re-injection pond, the qualified re-injection pond also passes through corresponding pipeline and the first coarse filter, the second coarse filter,
One fine filter, the second fine filter, the connection of third fine filter, to be carried out using qualified reinjected water to filter anti-
It washes, realizes the regeneration of filter.
First coarse filter, the second coarse filter, the first fine filter, the second fine filter, the filtering of third essence
Device also passes through corresponding pipeline and is connected with waste liquid pool, and the waste liquid pool is connected by pipeline with oil extraction waste water collecting pit.
The description of the embodiments and the specification only illustrate the principle of the present utility model and most preferred embodiment, is not taking off
Under the premise of from the spirit and scope of the utility model, the utility model also has various changes and improvements, these changes and improvements
It falls within the scope of the claimed invention.
Claims (10)
1. a kind of integrated purifying processing unit for oil extraction waste water, it is characterised in that: including oil extraction waste water collecting pit, separation
Device, blender, sedimentation basin and filter device, the oil extraction waste water collecting pit are connected with separator, point
Be connected by blender with sedimentation basin from device, the sedimentation basin is connected with filter device, the filter device with
Qualified re-injection pond is connected, and the qualified re-injection pond is connect by regenerating filter with filter device, the precipitating
Pond and filter device are also connected with waste liquid pool, and the waste liquid pool is also connected with oil extraction waste water collecting pit；
The oil droplet and suspended oil that the separator is used to drive the ternary in oil extraction waste water collecting pit in oil extraction waste water carry out
Separating treatment；
The blender is thoroughly mixed the various medicaments of addition with the waste water after oil droplet and suspended oil is separated, and makes
It obtains waste water sufficiently to react with the medicament of addition, realizes that the demulsification, flocculation, pH value of waste water are adjusted, make the oil emulsion in oil extraction waste water
Assembled, form big oil droplet and react with medicament generation, formation flocculate, and water stratification, to separate；
The filter device can separate 0.1 μm or more in waste water of oil droplet.
2. a kind of integrated purifying processing unit for oil extraction waste water according to claim 1, it is characterised in that: described
Separator include oil-water separator and oil slick seperator, the oil-water separator drives in oil extraction waste water for separation of tertiary
Oil droplet；The oil slick seperator is used to separate the suspended oil in waste water.
3. a kind of integrated purifying processing unit for oil extraction waste water according to claim 2, it is characterised in that: described
Oil slick seperator be also connected with the low wet crude surge drum for collecting suspended oil.
4. a kind of integrated purifying processing unit for oil extraction waste water according to claim 3, it is characterised in that: described
Oil slick seperator and blender between be additionally provided with for mixing and the medicinal-solution administration device of delivering medicament, the medicament is
Greasy filth cleanser, double-acid ferro-aluminum, calcium hydroxide, pAM.
5. a kind of integrated purifying processing unit for oil extraction waste water according to claim 1, it is characterised in that: described
Sedimentation basin include identical first sedimentation basin of structure and the second sedimentation basin, first sedimentation basin and the second sedimentation basin with
Blender is connected, and first sedimentation basin and the second sedimentation basin are used alternatingly, and is acted on, will be given up using gravitational difference natural subsidence
The suspended matters such as the greasy filth dross in water carry out precipitation and separation.
6. a kind of integrated purifying processing unit for oil extraction waste water according to claim 5, it is characterised in that: first
Sedimentation basin lower end is provided with the first dreg-liquid separator, and the second sedimentation basin lower end is provided with the second dreg-liquid separator, described
The first dreg-liquid separator, the second slag-liquid separation device is connected by corresponding pipeline with waste liquid pool.
7. a kind of integrated purifying processing unit for oil extraction waste water according to claim 1, it is characterised in that: described
Filter device include 2 the first coarse filters and the second coarse filter arranged side by side and 3 first essences arranged side by side
Filter, the second fine filter, third fine filter, first coarse filter and the second coarse filter are for separating 2 μm
Above oil droplet, first fine filter, the second fine filter, third fine filter are used to filter 0.1 μm or more of oil
Drop.
8. a kind of integrated purifying processing unit for oil extraction waste water according to claim 7, it is characterised in that: described
The first coarse filter and the second coarse filter be tubular ceramic membrane filter, which can filter point
Oil droplet from 2 μm or more；First fine filter, the second fine filter, third fine filter are modified sheet ceramics
Membrane filter, separable 0.1 μm or more of the oil droplet of the modified sheet purpose ceramic-film filter.
9. a kind of integrated purifying processing unit for oil extraction waste water according to claim 8, it is characterised in that: described
Third fine filter be connected by pipeline with qualified re-injection pond, the qualified re-injection pond also passes through corresponding pipeline
It is connected respectively with the first coarse filter, the second coarse filter, the first fine filter, the second fine filter, third fine filter,
Backwash is carried out to filter using qualified reinjected water.
10. a kind of integrated purifying processing unit for oil extraction waste water according to claim 9, it is characterised in that: the
One coarse filter, the second coarse filter, the first fine filter, the second fine filter, third fine filter pass through corresponding pipeline
It is connected with waste liquid pool.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109485181A (en) * | 2019-01-11 | 2019-03-19 | 广州中科粤江环保新技术有限公司 | A kind of integrated purifying processing unit for oil extraction waste water |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109485181A (en) * | 2019-01-11 | 2019-03-19 | 广州中科粤江环保新技术有限公司 | A kind of integrated purifying processing unit for oil extraction waste water |
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