CN109847414A - A kind of water-oil separating technique - Google Patents
A kind of water-oil separating technique Download PDFInfo
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- CN109847414A CN109847414A CN201811650479.8A CN201811650479A CN109847414A CN 109847414 A CN109847414 A CN 109847414A CN 201811650479 A CN201811650479 A CN 201811650479A CN 109847414 A CN109847414 A CN 109847414A
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Abstract
The present invention provides a kind of water-oil separating technique comprising following step: oily wastewater initially enters the coalescence of the level-one equipped with coarse material room and carries out initial gross separation；Sewage after oil removing enters demulsification room and is demulsified；Demulsification process uses Breakdown Emulsion by Pulse Electric Field mode, and the drop in sewage, through collision, stretching, coalescence, makes drop aggregation, the layering of dispersion, make water phase and oily phase initial gross separation under Electro-pulsing Field；Treated that sewage enters back into that second level water-oil separating room carries out further water-oil separating for demulsification.The present invention separates grease using three-step approach, after grease carries out initial gross separation in level-one coalescence room, into demulsification room, is demulsified using Breakdown Emulsion by Pulse Electric Field technology, separates oil mutually further with water phase；Treated that grease enters the second-order separation room for demulsification, and under the action of the coarse material of the second-order separation room and low-density blocking materials, oil is stopped to upper layer, and water-oil separating is high-efficient, high treating effect.
Description
Technical field
The present invention relates to oily water separating equipment technical fields, it particularly relates to a kind of water-oil separating technique.
Background technique
At present for the processing of oily wastewater, main bottleneck is exactly the separation and oily removal rate problem of oil and water at present,
For there are many present processing methods of oil removing, for example, gravitational separation process, coarse hair, filtration method, gas floatation, absorption method,
UF membrane, ultrasonic wave, chemical method, bioanalysis etc..
But there is a series of problem, such as gravitational method in use in these technologies, for highdensity oil
It is difficult to separate, equipment volume is big, and power consumption is big；Coalescence easily blocks, and permanence operation decline is obvious；Filtration method, it is easily stifled
Plug, backwash require height, easily block, and regeneration difficulty is big；Gas floatation process takes up a large area, and needs to add chemical agent, can generate big
Dross is measured, secondary pollution is generated；Absorption method needs to add chemical agent, and adsorbent reactivation is difficult, and there are secondary pollutions；Film point
It is costly from method, it easily blocks, regeneration is difficult；Supercritical ultrasonics technology, it is costly, there is higher requirement to raw water quality, application range is narrow
It is small；Chemical method is also easy to produce secondary pollution, costly；Bioanalysis takes up a large area, and requires service condition harsh.
In addition, the exploitation in China major part oil field has entered intermediary and later stages, i.e. high water-cut stage at present, in order to guarantee Produced Liquid
Oil content, more and more oilfield exploitations take the technique of polymer displacement of reservoir oil, though the technique can improve tar productivity,
That the oily waste water treatment difficulty of association also accordingly increases considerably, especially emulsion is particularly evident, demulsification also just at
Handle the oily wastewater matter of utmost importance to be solved.
Currently, the method that each oil field is all made of chemical agent demulsification, i.e., add the demulsifier of corresponding measurement in sewage
Achieve the effect that demulsification, due to being chemical demulsification, causes the secondary pollution of environment simultaneously during demulsification.This is existing
As also especially prominent in refinery factory, the oily wastewater emulsion especially cut out in Atmospheric vacuum technology of electric de-salting by sewage at
Reason factory is stymied by, and the harm to biochemistry pool is catastrophic, so developing the demulsification technology of environmental sound into oil field
And problem and scientific research problem that petrochemical industry water process is urgently to be resolved.
How to find the few breaking method of separative efficiency height, good separating effect, environmental pollution and further realizes grease
Isolated method becomes current urgent problem to be solved.
Summary of the invention
To solve the problems, such as that existing water-oil separating exists, the present invention provides a kind of water-oil separating technique, specific scheme
It is as follows:
A kind of water-oil separating technique comprising following step:
Oily wastewater initially enters the coalescence of the level-one equipped with coarse material room and carries out initial gross separation；
Sewage after oil removing enters demulsification room and is demulsified；
Demulsification process uses Breakdown Emulsion by Pulse Electric Field mode, utilizes the impulse electric field pair that voltage is 0-24V, frequency is 20HZ-2MHZ
Sewage is demulsified, and the drop in sewage is under Electro-pulsing Field, through collision, stretching, coalescence, assemble the drop of dispersion,
Layering makes water phase and oily phase initial gross separation；
Treated that sewage enters back into that second level water-oil separating room carries out further water-oil separating for demulsification.
Further, the oil coalescence isolated through level-one coalescence room, which is floated, enters the first collection chamber.
Further, first collection chamber is provided with the first draining valve and the first oil level interface instrument, when the first oil level interface
Instrument detects that first row oil valve is opened when oil level reaches the upper limit, oil extraction to oil storage tank.
Further, second level coalescence room is provided in the second-order separation room from top to bottom and room, second level coalescence are permeated in oil resistance
Room and oil resistance infiltration interior are respectively arranged with coarse material and low-density blocking materials, and the oil in sewage is in the second-order separation room
Effect through coarse material Yu low-density blocking materials, coalescence ascend into the second collection chamber.
Further, second collection chamber is provided with the second draining valve and the second oil level interface instrument, when the second oil level interface
Instrument detects that second row oil valve is opened when oil level reaches the upper limit, oil extraction to oil storage tank.
Further, the impulse electric field that the demulsification process is formed using multi-electrode is demulsified to containing greasy dirt.
The beneficial effects of the present invention are embodied in:
The present invention separates grease using three-step approach, after grease carries out initial gross separation in level-one coalescence room, into demulsification room,
It is demulsified using Breakdown Emulsion by Pulse Electric Field technology, separates oily phase further with water phase；Treated that grease enters second level for demulsification
Separation chamber, under the action of the coarse material of the second-order separation room and low-density blocking materials, oil is stopped to upper layer, grease point
From high-efficient, high treating effect, experimental verification, when intake oil content≤2000mg/l when, be discharged oil content≤5mg/l；
Tank interior of the present invention is reasonable in design, and occupied area is small, wide adaptation range, and operating cost is low, it can be achieved that continuous raw
Operation is produced, can be designed to the oily water separating equipment of different disposal ability and form as needed, is suitble to complicated application, answers
It is extensive with prospect.
Detailed description of the invention
Fig. 1 is a kind of integrated form oily water separating equipment structural schematic diagram of the present invention.
Figure label:
1: level-one coalesces room；2: demulsification room；3: the second-order separation room；4: the first collection chambers；5: the second collection chambers；6: the first oil levels circle
Face instrument；7: the second oil level interface instruments；8: drain line；9: Lai Shuiguan；10: outlet pipe；11: water inlet pipe；12: recoil carrys out water pipe
Road；13: back flushing gas pipeline；14: sewerage, mud, sand tube road.
Specific embodiment
Below in conjunction with the embodiment of the present invention, technical scheme in the embodiment of the invention is clearly and completely described,
Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based in the present invention
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the scope of protection of the invention.
As shown in Figure 1, a kind of integrated form water-oil separating technique is realized based on oily water separating equipment as shown in Figure 1, institute
It includes left and right ends respectively by left head and the closed horizontal cylinder of right end socket that state oily water separating equipment, which include it, is had in left head
Water inlet pipe 11, there is outlet pipe 10 on right end socket, and the horizontal cylinder is divided into level-one coalescence room 1, demulsification room 2, second level by demarcation plate
Separation chamber 3.
Several folding baffles of setting in level-one coalescence room 1, roll over the coarse grain for being provided between baffle and loading coarse material
Change bed；Several pole plates are provided in the demulsification room 2, form impulse electric field between adjacent plate；It is provided at the top of horizontal cylinder
The first collection chamber 4 being connected to level-one coalescence room 1, demulsification room 2；It is separated into from top to bottom by flase floor in the second-order separation room
Room is permeated in the second-order separation room and oil resistance, and the second-order separation room and oil resistance infiltration interior are respectively arranged with coarse material and hinder with low-density
Cut material；The second collection chamber 5 being connected to the second-order separation room 3 is provided at the top of horizontal cylinder.
This equipment includes drain line 8 and oil storage tank, and first collection chamber 4, the second collection chamber 5 are passed through drain line
8 are communicated to oil storage tank.Draining valve and the first oil level interface instrument 6 are provided in first collection chamber 4, when the first oil level interface instrument
6 detect that draining valve is opened when oil level reaches the upper limit, and oil drains into oil storage tank through drain line 8.Second collection chamber 5 is provided with
Draining valve and the second oil level interface instrument 7, when the second oil level interface instrument detects that oil level reaches the upper limit, second row oil valve is opened, oil
Oil storage tank is drained into through drain line 8.
The right end socket bottom of horizontal cylinder is provided with recoil and carrys out water lines 12, right for injecting back-flushing into cylinder
The suspended matter adhered in level-one coalescence room 1, the second-order separation room 3 is rinsed.It is additionally provided with and level-one coalescence room 1, demulsification
The back flushing gas pipeline 13 and sewerage, mud, sand tube road 14 that room 2,3 is connected to.
A kind of specific work process of integrated form water-oil separating technique of the present invention is as follows: oily wastewater is first through water inlet pipe 11
Initial gross separation is carried out into the level-one coalescence room 1 equipped with coarse material；Through level-one coalescence room isolate oil coalescence float into
Enter the first collection chamber 4.Sewage after oil removing enters demulsification room 2 and is demulsified；Demulsification process uses Breakdown Emulsion by Pulse Electric Field mode, benefit
It is 0-24V with voltage, frequency 20HZ-2MHZImpulse electric field be demulsified to sewage, the drop in sewage impulse electric field make
Under, through collision, stretching, coalescence, makes drop aggregation, the layering of dispersion, make water phase and oily phase initial gross separation；
Treated that sewage enters back into the second-order separation room 3 carries out further water-oil separating for demulsification.In the second-order separation room from top to bottom
Be provided with second level coalescence room and oil resistance permeate room, second level coalescence room and oil resistance permeate interior be respectively arranged with coarse material with it is low
Density blocking materials, effect of the oil in the second-order separation room through coarse material Yu low-density blocking materials in sewage, coalesce
Ascend into the second collection chamber.Draining valve and the first oil level interface instrument 6, second collection are provided in first collection chamber 4
Oil pocket 5 is provided with draining valve and the second oil level interface instrument 7, when the first oil level interface instrument 6, the second oil level interface instrument 7 detect oil
Draining valve is opened when position reaches the upper limit, and oil drains into oil storage tank through drain line 8.
After a period of use, the suspended matter in grease can be adhered to level-one coalescence room 1, demulsification room 2, the second-order separation to equipment
The coarse material of room 3, pole plate on low-density blocking materials, open recoil and come water lines 12, back flushing gas pipeline 13, be passed through
Back-flushing and back flushing air are rinsed level-one coalescence room 1, demulsification room 2, the second-order separation room 3.It after flushing, opens and carrys out water pipe 9, lead to
Enter water, mud, husky sufficiently liquefaction are discharged through sewerage, mud, sand tube road 14.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (6)
1. a kind of water-oil separating technique, which is characterized in that it is comprised the following steps that
Oily wastewater initially enters the coalescence of the level-one equipped with coarse material room and carries out initial gross separation；
Sewage after oil removing enters demulsification room and is demulsified；
Demulsification process uses Breakdown Emulsion by Pulse Electric Field mode, is 0-24V using voltage, frequency 20HZ-2MHZImpulse electric field to dirt
Water is demulsified, and the drop in sewage, through collision, stretching, coalescence, makes the drop aggregation of dispersion, divides under Electro-pulsing Field
Layer makes water phase and oily phase initial gross separation；
Treated that sewage enters back into that second level water-oil separating room carries out further water-oil separating for demulsification.
2. a kind of water-oil separating technique according to claim 1, it is characterised in that: the oil isolated through level-one coalescence room is poly-
It ties floating into the first collection chamber.
3. a kind of water-oil separating technique according to claim 2, it is characterised in that: first collection chamber is provided with first
Draining valve and the first oil level interface instrument, when the first oil level interface instrument detects that oil level reaches the upper limit, first row oil valve is opened, row
Oil is to oil storage tank.
4. a kind of water-oil separating technique according to claim 1, it is characterised in that: in the second-order separation room from top to bottom
Be provided with second level coalescence room and oil resistance permeate room, second level coalescence room and oil resistance permeate interior be respectively arranged with coarse material with it is low
Density blocking materials, effect of the oil in the second-order separation room through coarse material Yu low-density blocking materials in sewage, coalesce
Ascend into the second collection chamber.
5. a kind of water-oil separating technique according to claim 4, it is characterised in that: second collection chamber is provided with second
Draining valve and the second oil level interface instrument, when the second oil level interface instrument detects that oil level reaches the upper limit, second row oil valve is opened, row
Oil is to oil storage tank.
6. a kind of water-oil separating technique according to claim 1, it is characterised in that: the demulsification process uses multi-electrode shape
At impulse electric field to being demulsified containing greasy dirt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811650479.8A CN109847414A (en) | 2018-12-31 | 2018-12-31 | A kind of water-oil separating technique |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811650479.8A CN109847414A (en) | 2018-12-31 | 2018-12-31 | A kind of water-oil separating technique |
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| CN109847414A true CN109847414A (en) | 2019-06-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113354184A (en) * | 2021-07-05 | 2021-09-07 | 于文星 | Physical method treatment device and method for waste oil water |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004014512A2 (en) * | 2002-08-07 | 2004-02-19 | National Tank Company | Dual frequency electrostatic coalescence |
| CN204981250U (en) * | 2015-08-21 | 2016-01-20 | 甘肃蓝科石化高新装备股份有限公司 | Water oil separating coalescence plate electrode desalination and dehydration's water oil separating ware |
| CN109019930A (en) * | 2018-09-04 | 2018-12-18 | 江苏大洋环保工程有限公司 | A kind of oily wastewater integrated high-efficiency processor |
-
2018
- 2018-12-31 CN CN201811650479.8A patent/CN109847414A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004014512A2 (en) * | 2002-08-07 | 2004-02-19 | National Tank Company | Dual frequency electrostatic coalescence |
| CN204981250U (en) * | 2015-08-21 | 2016-01-20 | 甘肃蓝科石化高新装备股份有限公司 | Water oil separating coalescence plate electrode desalination and dehydration's water oil separating ware |
| CN109019930A (en) * | 2018-09-04 | 2018-12-18 | 江苏大洋环保工程有限公司 | A kind of oily wastewater integrated high-efficiency processor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113354184A (en) * | 2021-07-05 | 2021-09-07 | 于文星 | Physical method treatment device and method for waste oil water |
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