CN109019738A - Air floatation machine dross separation apparatus in a kind of tobacco processing sewage disposal process system - Google Patents
Air floatation machine dross separation apparatus in a kind of tobacco processing sewage disposal process system Download PDFInfo
- Publication number
- CN109019738A CN109019738A CN201811117325.2A CN201811117325A CN109019738A CN 109019738 A CN109019738 A CN 109019738A CN 201811117325 A CN201811117325 A CN 201811117325A CN 109019738 A CN109019738 A CN 109019738A
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- phase
- separating device
- oil slick
- dross
- device cabinets
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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
-
- 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
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Filtration Of Liquid (AREA)
Abstract
Air floatation machine dross separation apparatus in a kind of tobacco processing sewage disposal process system, belongs to field of waste water treatment.In order to which tiny pipe tobacco residue, tar, sewage, the sludge in the dross that generates to air floatation machine efficiently separate.The present invention is specially provided with detachable solid dross strainer convenient for cleaning to separate solid matter, can effectively separate the solid matters such as pipe tobacco in air floatation machine dross.Can effectively the solid sludges for falling to four separator bottoms be separated by devising perforated sludge discharge pipe in the bottom of four phase-separating devices.It is provided with oil baffle, oil trap and oil exit pipe in four phase-separating devices, can effectively separate the lipid phases such as tar.Clear water by oil removing and precipitating flows through oil slick the lower partition and enters clear water zone, is efficiently separated by the water outlet being arranged in four separators.Present invention residue of different shapes suitable for sewage treatment process system separates.
Description
Technical field
The invention belongs to field of waste water treatment, and in particular to air floatation machine in a kind of tobacco processing sewage disposal process system
The device that the dross items substance of generation is separated.
Background technique
Air floatation machine is often set after fine fack in the sewage technique generated in processing tobacco, is used for
Remove the dross of the floating substances compositions such as tiny pipe tobacco residue, tar, water, the sludge in tobacco processing sewage.Due to air floatation machine
A large amount of sewage can be brought into while removing dross during scum collection system mechanical movement, cause the volume of dross significantly
Increase.These drosses are discharged into the sludge concentration tank in sewage disposal system under regular situation, can bring following problem in this way: first is that
The hydraulic loading for considerably increasing sludge concentration tank causes the reduction of sludge condensation effect.Second is that pipe tobacco residue, tar are mixed into concentration
Cause the mud-water separation difficulty of sludge to increase in the sludge in pond, makes a big impact to the working efficiency of sludge dehydration device, very
To can not work normally sludge dehydration device.
Summary of the invention
The present invention is to solve the tiny cigarette that air floatation machine excludes in sewage process system in processing tobacco
The problem of influence of the dross of silk residue, the floating substances such as tar and sewage composition to sludge condensation and sludge dewatering.In order to right
Tiny pipe tobacco residue (floating solids), tar (grease) in the dross of air floatation machine generation, sewage (liquid), sludge (can settle
Solid) it is efficiently separated, propose air floatation machine dross separation apparatus in a kind of tobacco processing sewage disposal process system.
Air floatation machine dross separation apparatus in a kind of tobacco processing sewage disposal process system of the present invention, the device packet
Include four phase-separating device cabinets 1, detachable solid dross strainer 3 and perforated sludge discharge pipe 6；
Four phase-separating device cabinets 1 include water inlet deflector 101, oil slick partition 102, oil slick weir plate 103 and draining weir plate
104；
The upper surface of four phase-separating device cabinets 1 offers water inlet, and water inlet connects air bearing by dross main sewer 2
Machine 8；And detachable solid dross strainer 3 is provided in water inlet, for being filtered to suspended solid in sewage；Water inlet water conservancy diversion
Plate 101 is arranged near water inlet, and is located at the inside of four phase-separating device cabinets 1；
The oil slick partition 102 of vertical direction is additionally provided in four phase-separating device cabinets 1, the setting of oil slick partition 102 exists
The distal end of water inlet；And oil slick partition 102 is fixedly connected with the top surface of four phase-separating device cabinets 1 and front-rear side walls；Oil slick
There is gap between partition 102 and the bottom plate of four phase-separating device cabinets 1；The nearly water inlet side of oil slick partition 102 is oil slick area,
Remote water inlet side is exhalant region；
The oil slick area side of oil slick partition 102 is fixed with oil slick weir plate 103, the front side wall of four phase-separating device cabinets 1 or after
Side wall is provided with oil discharge outlet, and the region that oil slick weir plate 103 and oil slick partition 102 enclose is arranged in the oil discharge outlet；
Water outlet is provided on the side wall of four phase-separating device cabinets, 1 water inlet distal end；The water outlet closes on the separation of four phases
The top surface of device box 1 is arranged, and the water in exhalant region is excluded by water outlet；
The bottom of four phase-separating device cabinets 1, and perforated sludge discharge pipe 6 and four phase-separating devices are arranged in perforated sludge discharge pipe 6
The bottom surface of cabinet 1 is parallel；The mud discharging mouth of the perforated sludge discharge pipe 6 passes through four phase-separating device cabinets, 1 one side walls and is located at four phases
The outside of separator cabinet 1.
Further, the top of the water inlet of four phase-separating device cabinets 1 is equipped with rectangular undulating portion, the rectangular preiection
Partial top surface is provided with rectangular opening, and detachable solid dross strainer 3 is arranged in rectangular undulating portion.
Further, the outside of the water outlet of four phase-separating device cabinets 1 be equipped with rectangle groove body, the one of the rectangle groove body
A side wall is connect with four phase-separating device cabinets, 1 top surface, the side wall of another wall of rectangle groove body and four phase-separating device cabinets 1
Connection, and another side wall of rectangle groove body is located at the downside of water outlet, the side of rectangle groove body is provided with out circular through hole, described
Circular through hole is used for grafting drainpipe 5, and circular through hole closes on connecting with the side wall of four phase-separating device cabinets 1 for rectangle groove body
Side wall setting.
Further, the bottom surface of four phase-separating device cabinets 1 is provided with drain, and the drain connects blow-down pipe 7, emptying
Pipe 7 is normally closed pipe, for emptying to four phase-separating device cabinets 1.
Further, the length of oil slick partition 102 is greater than the half of the height of four phase-separating device cabinets 1 less than four
The height of phase-separating device cabinet 1.
Further, detachable solid dross strainer 3 includes rectangular frame 301, press strip 303 and nylon Dense mesh screen 304；
The network interface of nylon Dense mesh screen 304 is set on rectangular frame 301, and press strip 303 is fixed on by screw-nut cooperation
The outside of rectangular frame 301.
Four phase-separating device of the present invention is different from the devices such as the oil expeller used in sewage disposal system.It is general to use
Degreasing unit in sewage disposal system, major function are that grease, separation (oil, water two-phase substance point are carried out to oily waste water
From).Four phase-separating device of the present invention has fully considered air floatation machine institute in tobacco processing waste water system in structure design
The dross of generation contains tiny pipe tobacco residue (floating solids), tar (grease), sewage (liquid), sludge (can settle solid) property
The different characteristic of shape has carried out special designing to each baffle dimensions, each water passage in the cabinet of four phase-separating devices.Also,
It is specially provided with detachable solid dross strainer convenient for cleaning in order to separate solid matter, it can effectively will be in air floatation machine dross
The solid matters such as pipe tobacco separated.In addition, the bottom of four phase-separating devices devise perforated sludge discharge pipe can effectively by
Fall to the solid sludges separation of four separator bottoms.In four phase-separating devices be provided with oil baffle, oil trap and
Oil exit pipe can effectively separate the lipid phases such as tar.Clear water by oil removing and precipitating flows through oil slick the lower partition
Into clear water zone, efficiently separated by the water outlet being arranged in four separators.
Detailed description of the invention
Fig. 1 is a kind of overall structure for the waste water separator in tobacco processing sewage disposal process of the present invention
Schematic diagram；
Fig. 2 is the top view of four phase-separating device cabinets；
Fig. 3 is the A-A view of Fig. 2；
Fig. 4 is the B-B view of Fig. 2；
Fig. 5 is separation process schematic diagram in four phase-separating device cabinets；In figure, C is oil slick layer, and D is water, oil and solid
Grain Disengagement zone, F is exhalant region；
Fig. 6 is the overall structure diagram of detachable dross net；
Fig. 7 be 1 in Fig. 6 at schematic enlarged-scale view.
Specific embodiment
Specific embodiment 1: illustrating that present embodiment, one kind described in present embodiment are used for below with reference to Fig. 1 to Fig. 5
Waste water separator in tobacco processing sewage disposal process, the device are floating including four phase-separating device cabinets 1, detachable solid
Slag strainer 3 and perforated sludge discharge pipe 6；
Four phase-separating device cabinets 1 include water inlet deflector 101, oil slick partition 102, oil slick weir plate 103 and draining weir plate
104；
The upper surface of four phase-separating device cabinets 1 offers water inlet, and water inlet connects air bearing by dross main sewer 2
Machine 8；And detachable solid dross strainer 3 is provided in water inlet, for being filtered to suspended solid in sewage；Water inlet water conservancy diversion
Plate 101 is arranged near water inlet, and is located at the inside of four phase-separating device cabinets 1；
The oil slick partition 102 of vertical direction is additionally provided in four phase-separating device cabinets 1, the setting of oil slick partition 102 exists
The distal end of water inlet；And oil slick partition 102 is fixedly connected with the top surface of four phase-separating device cabinets 1 and front-rear side walls；Oil slick
There is gap between partition 102 and the bottom plate of four phase-separating device cabinets 1；The nearly water inlet side of oil slick partition 102 is oil slick area,
Remote water inlet side is exhalant region；
The oil slick area side of oil slick partition 102 is fixed with oil slick weir plate 103, the front side wall of four phase-separating device cabinets 1 or after
Side wall is provided with oil discharge outlet, and the region that oil slick weir plate 103 and oil slick partition 102 enclose is arranged in the oil discharge outlet；
Water outlet is provided on the side wall of four phase-separating device cabinets, 1 water inlet distal end；The water outlet closes on the separation of four phases
The top surface of device box 1 is arranged, and the water in exhalant region is excluded by water outlet；
The bottom of four phase-separating device cabinets 1, and perforated sludge discharge pipe 6 and four phase-separating devices are arranged in perforated sludge discharge pipe 6
The bottom surface of cabinet 1 is parallel；The mud discharging mouth of the perforated sludge discharge pipe 6 passes through four phase-separating device cabinets, 1 one side walls and is located at four phases
The outside of separator cabinet 1.The present invention makes four phase-separating device cabinets 1 first in implementing, and makes detachable solid
Dross strainer 3 is simultaneously installed in four phase-separating device cabinets 1, and connection air floatation machine dross main sewer 2 is in being installed on simultaneously
Be installed in the upper opening of the detachable solid dross strainer 3 in four phase-separating device cabinets 1, make air floatation machine dross into
Enter four phase-separating devices.
Strainer is reinstalled after strainer is removed cleaning solid suspension when retaining a certain amount of solid suspension in strainer.
Oil exit pipe 4 is installed on to the oil discharge outlet position of four phase-separating device cabinets 1, and oil exit pipe is led in mobile oil slick bucket, when four
Oil exit pipe 4 is opened when oil slick layer reach a certain height in phase-separating device and excludes oil slick, and oil exit pipe 4 is closed after oil extraction.It will draining
It is in wall box that pipe 5, which is installed on discharge outlet described in the corresponding position present embodiment of four phase-separating device cabinets, 1 discharge outlet,
The rectangular opening that top surface opens up is closed on, in this way, wall box realizes the effect of weir plate, effectively raises the clarity of draining,
It is simultaneously that inverted rectangle groove body is set in discharge outlet, realizes that the water of water outlet is passed through in storage, and open up circle on rectangular channel
Through-hole, the circular through hole lead to biochemical treatment tank for installing drainpipe 5, by drainpipe 5, and drainpipe 5 is normally opened without closing
It closes.
Perforated sludge discharge pipe 6 is installed on to the specific position of four phase-separating device cabinets 1, and is led to sludge concentration tank,
The deposition solid suspension that sludge pipe excludes four phase-separating device bottoms is periodically turned on, is closed after spoil disposal by perforated sludge discharge pipe 6.It will
Blow-down pipe 7 is installed on the specific position of four phase-separating device cabinets 1, empties four phase-separating devices, inspection using blow-down pipe 7 when maintenance
Blow-down pipe 7 is closed after repairing.
Specific embodiment 2: illustrating present embodiment below with reference to Fig. 1, present embodiment is to described in embodiment one
A kind of waste water separator in tobacco processing sewage disposal process is described further, four phase-separating device cabinets 1
The top of water inlet is equipped with rectangular undulating portion, and the top surface of the rectangular undulating portion is provided with rectangular opening, detachable solid dross
Strainer 3 is arranged in rectangular undulating portion.
Body embodiment three: illustrate present embodiment below with reference to Fig. 2 to Fig. 3, present embodiment is to one institute of embodiment
A kind of waste water separator in tobacco processing sewage disposal process stated is described further, four phase-separating device cabinets
The outside of 1 water outlet is equipped with rectangle groove body, and a side wall of the rectangle groove body and four phase-separating device cabinets, 1 top surface connect
It connects, another wall of rectangle groove body is connect with the side wall of four phase-separating device cabinets 1, and another side wall of rectangle groove body is located at
The downside of water outlet, the side of rectangle groove body are provided with out circular through hole, and the circular through hole is used for grafting drainpipe 5, and round
Through-hole closes on the side wall setting of rectangle groove body connecting with the side wall of four phase-separating device cabinets 1.
Body embodiment four: illustrate present embodiment below with reference to Fig. 2 to Fig. 3, present embodiment is to one institute of embodiment
A kind of waste water separator in tobacco processing sewage disposal process stated is described further, four phase-separating device cabinets
1 bottom surface is provided with drain, and the drain connects blow-down pipe 7, and blow-down pipe 7 is normally closed pipe, for four phase-separating device casees
Body 1 is emptied.
Body embodiment five: illustrate present embodiment below with reference to Fig. 3, present embodiment is to one described in embodiment one
Waste water separator of the kind in tobacco processing sewage disposal process is described further, and the length of oil slick partition 102 is greater than
Height of the half of the height of four phase-separating device cabinets 1 less than four phase-separating device cabinets 1.
Body embodiment six: illustrate present embodiment below with reference to Fig. 6 and Fig. 7, present embodiment is to one institute of embodiment
A kind of waste water separator in tobacco processing sewage disposal process stated is described further, detachable solid dross filter
Net 3 includes rectangular frame 301, press strip 303 and nylon Dense mesh screen 304；
The network interface of nylon Dense mesh screen 304 is set on rectangular frame 301, and press strip 303 is fixed on by screw-nut cooperation
The outside of rectangular frame 301.
Detachable dross net is made of stainless steel angle steel, stainless steel press strip CARBURIZING FURNACE FOR STAINLESS FASTENER, nylon Dense mesh screen.It is detachable floating
The specific size of slag net and the specification of Dense mesh screen should all be determined according to the flow of air floatation machine dross to be dealt with and specific character.
A rectangular frame is made with stainless steel angle steel first, a rectangle pocket is made with nylon Dense mesh screen, by nylon Dense mesh screen mouth
Nylon Dense mesh screen is finally fixed on stainless steel rectangular frame with stainless steel band steel press strip on stainless steel rectangular frame by bag for packing fruits on
On.
After the detachable dross net that the dross entrance of air floatation machine is installed in four phase-separating device cabinets, air floatation machine
Solid suspension in dross is trapped removal.The dross of solid suspension is removed via the channel of setting water inlet deflector 101
It even into grease, water, solid Disengagement zone (three-phase separation area) can be settled is separated, wherein grease floats up on liquid level simultaneously
By the gear of oil slick partition 102 in three-phase separation area, the front side wall or rear wall of four phase-separating device cabinets 1 are provided with oil discharge outlet, row
Oil pipe 4 is plugged in oil discharge outlet, is periodically excluded by oil exit pipe 4.Solid can be settled and fall to bottom, perforated sludge pipe 6 is fixed
Phase excludes.Separation grease and the water that can settle after solid, which then pass through 102 lower part of oil slick partition and enters clear water zone, passes through drainage weir
104 overflow of plate is excluded through drainpipe 5.
Four phase-separating device of the present invention is that four phase-separating devices can have with common oily-water seperating equipment difference
Effect ground separates each phase substance in dross caused by air floatation machine in tobacco sewage disposal system.Through excessive
From substance can carry out targetedly subsequent processing by its characteristic, for example, the solid matters such as pipe tobacco isolated can with it is thin
The grid slag that grid generates is handled together, and the tar and grease isolated can be together with waste oil other in other factories
It manages, is handled in the biochemistry pool that the clear water isolated can be directly entered in sewage disposal system, the solid sludges row isolated
It is handled together to sludge-tank with the other sludge generated in sewage disposal system.
This four phase-separating device has been applied in Practical Project and has obtained good effect.Thoroughly solve due to air bearing
A large amount of sewage can be brought into while removing dross during machine scum collection system mechanical movement, cause the volume of dross big
Cause the hydraulic loading of sludge concentration tank excessive, sludge condensation effect reduce the problem of.Simultaneously also solve due to pipe tobacco residue,
Tar, which is mixed into the sludge of concentration basin, causes the mud-water separation difficulty of sludge to increase, even more so that sludge dehydration device can not be normal
The problem of work.
Claims (6)
1. air floatation machine dross separation apparatus in a kind of tobacco processing sewage disposal process system, which is characterized in that the device includes
Four phase-separating device cabinets (1), detachable solid dross strainer (3) and perforated sludge discharge pipe (6)；
Four phase-separating device cabinets (1) include water inlet deflector (101), oil slick partition (102), oil slick weir plate (103) and draining
Weir plate (104)；
The upper surface of four phase-separating device cabinets (1) offers water inlet, and water inlet connects air bearing by dross main sewer (2)
Machine (8)；And detachable solid dross strainer (3) is provided in water inlet, for being filtered to suspended solid in sewage；Water inlet
Deflector (101) is arranged near water inlet, and is located at the inside of four phase-separating device cabinets (1)；
The oil slick partition (102) of vertical direction, oil slick partition (102) setting are additionally provided in four phase-separating device cabinets (1)
In the distal end of water inlet；And the fixed company in the top surface and front-rear side walls of oil slick partition (102) and four phase-separating device cabinets (1)
It connects；There is gap between oil slick partition (102) and the bottom plate of four phase-separating device cabinets (1)；The nearly water inlet of oil slick partition (102)
Side is oil slick area, and remote water inlet side is exhalant region；
The oil slick area side of oil slick partition (102) is fixed with oil slick weir plate (103), the front side wall of four phase-separating device cabinets (1) or
Rear wall is provided with oil discharge outlet, the region that the oil discharge outlet setting is enclosed in oil slick weir plate (103) and oil slick partition (102)；
Water outlet is provided on the side wall of four phase-separating device cabinet (1) water inlet distal ends；The water outlet closes on four phases separation dress
The top surface setting of cabinet (1) is set, the water in exhalant region is excluded by water outlet；
Perforated sludge discharge pipe (6) is arranged in the bottom of four phase-separating device cabinets (1), and perforated sludge discharge pipe (6) separates dress with four phases
The bottom surface for setting cabinet (1) is parallel；The mud discharging mouth of the perforated sludge discharge pipe (6) passes through (1) side wall of four phase-separating device cabinets
Positioned at the outside of four phase-separating device cabinets (1).
2. air floatation machine dross separation apparatus in a kind of tobacco processing sewage disposal process system according to claim 1, special
Sign is that the top of the water inlet of four phase-separating device cabinets (1) is equipped with rectangular undulating portion, the top of the rectangular undulating portion
Face is provided with rectangular opening, and detachable solid dross strainer (3) is arranged in rectangular undulating portion.
3. air floatation machine dross separation apparatus in a kind of tobacco processing sewage disposal process system according to claim 1, special
Sign is, the outside of the water outlet of four phase-separating device cabinets (1) is equipped with rectangle groove body, a side wall of the rectangle groove body with
The side wall of the connection of four phase-separating device cabinet (1) top surfaces, another wall of rectangle groove body and four phase-separating device cabinets (1) connects
It connects, and another side wall of rectangle groove body is located at the downside of water outlet, the side of rectangle groove body is provided with out circular through hole, the circle
Shape through-hole is used for grafting drainpipe (5), and circular through hole connecting with the side walls of four phase-separating device cabinets (1) of closing on rectangle groove body
The side wall setting connect.
4. air floatation machine dross separation apparatus in a kind of tobacco processing sewage disposal process system according to claim 1,
It is characterized in that, the bottom surface of four phase-separating device cabinets (1) is provided with drain, and the drain connection puts mouth pipe (7), puts mouth pipe
It (7) is normally closed pipe, for being emptied to four phase-separating device cabinets (1).
5. air floatation machine dross separation apparatus in a kind of tobacco processing sewage disposal process system according to claim 1,
It is characterized in that, the length of oil slick partition (102) is greater than the half of the height of four phase-separating device cabinets (1) less than four phases point
Height from device box (1).
6. air floatation machine dross separation apparatus in a kind of tobacco processing sewage disposal process system according to claim 1,
It is characterized in that, detachable solid dross strainer (3) includes rectangular frame (301), press strip (303) and nylon Dense mesh screen (304)；
The network interface of nylon Dense mesh screen (304) is set on rectangular frame (301), and press strip (303) is cooperated by screw-nut to be fixed
In the outside of rectangular frame (301).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811117325.2A CN109019738A (en) | 2018-09-25 | 2018-09-25 | Air floatation machine dross separation apparatus in a kind of tobacco processing sewage disposal process system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811117325.2A CN109019738A (en) | 2018-09-25 | 2018-09-25 | Air floatation machine dross separation apparatus in a kind of tobacco processing sewage disposal process system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109019738A true CN109019738A (en) | 2018-12-18 |
Family
ID=64617935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811117325.2A Pending CN109019738A (en) | 2018-09-25 | 2018-09-25 | Air floatation machine dross separation apparatus in a kind of tobacco processing sewage disposal process system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109019738A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109760231A (en) * | 2019-01-25 | 2019-05-17 | 冯治平 | A kind of environment-friendly type waste plastics film regeneration treatment equipment and technique |
| CN110240324A (en) * | 2019-06-28 | 2019-09-17 | 西安建筑科技大学 | Air-floating apparatus with oil-water separating function |
| CN111422938A (en) * | 2020-03-20 | 2020-07-17 | 北京生态岛科技有限责任公司 | Cavitation air flotation three-phase separation system |
| CN113443797A (en) * | 2020-03-26 | 2021-09-28 | 大庆油田有限责任公司 | Pretreatment system and pretreatment method for oil-containing sludge |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109760231A (en) * | 2019-01-25 | 2019-05-17 | 冯治平 | A kind of environment-friendly type waste plastics film regeneration treatment equipment and technique |
| CN110240324A (en) * | 2019-06-28 | 2019-09-17 | 西安建筑科技大学 | Air-floating apparatus with oil-water separating function |
| CN111422938A (en) * | 2020-03-20 | 2020-07-17 | 北京生态岛科技有限责任公司 | Cavitation air flotation three-phase separation system |
| CN113443797A (en) * | 2020-03-26 | 2021-09-28 | 大庆油田有限责任公司 | Pretreatment system and pretreatment method for oil-containing sludge |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181218 |