CN109499776A - A kind of partial reflux dissolved air flotation system - Google Patents
A kind of partial reflux dissolved air flotation system Download PDFInfo
- Publication number
- CN109499776A CN109499776A CN201811118639.4A CN201811118639A CN109499776A CN 109499776 A CN109499776 A CN 109499776A CN 201811118639 A CN201811118639 A CN 201811118639A CN 109499776 A CN109499776 A CN 109499776A
- Authority
- CN
- China
- Prior art keywords
- upper spacer
- outlet
- floation tank
- lower clapboard
- pipeline
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010992 reflux Methods 0.000 title claims abstract description 31
- 238000009300 dissolved air flotation Methods 0.000 title claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 65
- 238000005188 flotation Methods 0.000 claims abstract description 28
- 230000008676 import Effects 0.000 claims abstract description 19
- 238000004064 recycling Methods 0.000 claims abstract description 18
- 238000005189 flocculation Methods 0.000 claims abstract description 10
- 230000016615 flocculation Effects 0.000 claims abstract description 10
- 230000006837 decompression Effects 0.000 claims abstract description 5
- 125000006850 spacer group Chemical group 0.000 claims description 39
- 239000008396 flotation agent Substances 0.000 claims description 11
- 238000005192 partition Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 13
- 238000000034 method Methods 0.000 abstract description 10
- 238000005265 energy consumption Methods 0.000 abstract description 8
- 239000002351 wastewater Substances 0.000 description 19
- 239000006260 foam Substances 0.000 description 10
- 239000012141 concentrate Substances 0.000 description 3
- 238000004945 emulsification Methods 0.000 description 3
- 239000000839 emulsion Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000006173 Good's buffer Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000002516 radical scavenger Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/14—Flotation machines
- B03D1/1431—Dissolved air flotation machines
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biotechnology (AREA)
- Physical Water Treatments (AREA)
Abstract
The invention discloses a kind of partial reflux dissolved air flotation systems, including flocculation basin, floation tank, dissolving, pressure reducing valve, booster pump and water sprayer, the floation tank is equipped with reflux water inlet and recycling effluent mouth, the flocculation basin outlet is connected with floation tank import by pipeline, the recycling effluent mouth is connected by pipeline with booster pump, the booster pump outlet is connected with water sprayer import, the water sprayer outlet is connected by pipeline with dissolving import, the dissolving outlet is connected with pressurizing valve import, and the decompression valve outlet is connected by pipeline with reflux water inlet.The present invention is constituted simply, and stable, the water of pressurization is few, and low energy consumption, does not promote to emulsify in floatation process, flotation high treating effect.
Description
Technical field
The present invention relates to oily water separation technique fields, more particularly, to a kind of partial reflux dissolved air flotation system.
Background technique
Floatation is widely used in the processing of oily waste water.Its mechanism is that air is passed through into waste water, and with micro-bubble
Form is precipitated from water becomes carrier, is attached on the oil emulsion in waste water on bubble, floats to the water surface with bubble, is formed
Foam achievees the purpose that oil-water separation by collecting foam.
Currently used floatation is whole process dissolved-air floatation, is that whole oily waste waters are pressurizeed with water pump, is pumping
Preceding injection air, in dissolving, air is dissolved in oily waste water, waste water is then sent into floation tank by pressure reducing valve, at this time
Will form many minute bubbles in oily waste water, the oil emulsion in oily waste water can be attached on these minute bubbles and escape the water surface,
Foam is formed on the water surface, finally scrapes off these foams, and treated can be expelled directly out containing waste water.Whole process dissolved air floatation
Whole oily waste waters of method are pressurized by water pump, can be improved the emulsification degree of oily waste water to improve processing pressure, be caused to float
Select treatment effect poor, while required water pump and dissolving process are big, correspondingly increase energy consumption.
Summary of the invention
The present invention is provided to solve above-mentioned technical problem present in the whole process dissolved-air floatation of the prior art
A kind of to constitute simply, stable, the water of pressurization is few, and low energy consumption, does not promote to emulsify in floatation process, flotation high treating effect
Partial reflux dissolved air flotation system.
To achieve the goals above, the invention adopts the following technical scheme:
A kind of partial reflux dissolved air flotation system of the invention, including flocculation basin, floation tank, dissolving, pressure reducing valve, pressurization
Pump and water sprayer, the floation tank are equipped with reflux water inlet and recycling effluent mouth, the flocculation basin outlet and floation tank import
It is connected by pipeline, the recycling effluent mouth is connected by pipeline with booster pump, the booster pump outlet and water sprayer import phase
Even, the water sprayer outlet is connected by pipeline with dissolving import, and the dissolving outlet is connected with pressurizing valve import, described
Decompression valve outlet is connected by pipeline with reflux water inlet.Inventive point of the invention is: the water outlet after a part of oil removing is returned
Stream is pressurizeed with booster pump, and carries out molten gas using water sprayer, is directly entered floation tank and oily waste water after pressure reducing valve depressurizes
Water carries out mixing and flotation, and the water of pressurization is few, therefore low energy consumption, and the water to pressurize is the water after flotation oil removing, no
It can promote to emulsify, advantageously reduce system processing pressure, flotation effect is good.
Preferably, be successively fixed with from left to right in the floation tank the first lower clapboard, the first upper spacer, on second every
Plate and the second lower clapboard, first lower clapboard, the second lower clapboard at the top of floation tank between be equipped with gap, on described first
Partition, the second upper spacer are equipped with gap between flotation bottom of pond portion, and the space between the first lower clapboard and floation tank forms mixed
Area is closed, the floation tank import is set to mixed zone side, and the reflux water inlet is set to mixed zone bottom, the reflux water inlet
Space between mixed zone bottom, the first lower clapboard and the second upper spacer forms flotation area, on the first upper spacer and second
Space between partition forms oil collecting zone, the gap formation overflow ducts between the second upper spacer and the second lower clapboard, under second
Space between partition and floation tank forms gathering ground, and the floation tank outlet is set to gathering ground side, the recycling effluent mouth
Set on gathering ground bottom.The first lower clapboard, the first upper spacer, the second upper spacer and the second lower clapboard in the present invention are by floation tank
Interior space is divided into multiple isolated areas, guarantees that flotation effect, the first lower clapboard can avoid the oily waste water into mixed zone
Oily waste water in flotation area is caused to impact and promotion emulsification, influences flotation effect, mixed zone is dissolved air water and oily waste water
Mixed Zone, flotation area be carry out flotation region, foam escapes up the water surface and concentrates on oil collecting zone, and water is through overflow ducts
Overflow partially carries out reflux pressurization from the discharge of recycling effluent mouth, partially exports and be discharged from floation tank to gathering ground.
Preferably, first lower clapboard is obliquely installed to the first upper spacer direction.First lower clapboard on first every
Plate direction is obliquely installed, and has the gradient, and good buffer effect can reduce oily waste water impact caused by the first upper spacer, is reduced
Emulsification.
Preferably, the height of second upper spacer is greater than the height of the first upper spacer.The height of second upper spacer is big
In the height of the first upper spacer, make the water of bottom through in overflow ducts overflow to gathering ground, thus to reduce the entrainment of foam.
Preferably, the partial reflux dissolved air flotation system further includes flotation agent tank, the flotation agent tank is by protruding into
The pipeline of mixed zone bottom is connected with floation tank.In flotation agent tank be equipped with flotation agent, flotation agent be it is existing conventional, specific kind
Class thus do not repeat, by addition flotation agent to improve flotation effect.
Preferably, the regurgitant volume of the recycling effluent mouth is the 25~50% of floation tank water inlet inflow.Pass through control
Regurgitant volume processed is to take into account energy consumption and flotation effect.
Therefore, the invention has the following beneficial effects:
(1) effluent recycling after a part of oil removing is pressurizeed with booster pump, and molten gas is carried out using water sprayer, through subtracting
Floation tank being directly entered after pressure valve decompression to be mixed with oily waste water and flotation, the water of pressurization is few, therefore low energy consumption, and
The water of pressurization is the water after flotation oil removing, will not promote to emulsify, advantageously reduce system processing pressure, flotation effect is good；
Space in floation tank is divided into more by (2) first lower clapboards, the first upper spacer, the second upper spacer and the second lower clapboard
A isolated area guarantees flotation effect；
The height of (3) second upper spacers is greater than the height of the first upper spacer, makes the water of bottom through overflow ducts overflow to collection
In pool, thus to reduce the entrainment of foam；
(4) regurgitant volume of recycling effluent mouth be floation tank water inlet inflow 25~50%, by control regurgitant volume with
Take into account energy consumption and flotation effect.
Detailed description of the invention
Fig. 1 is a kind of attachment structure schematic diagram of the invention.
In figure: flocculation basin 1, floation tank 2, dissolving 3, pressure reducing valve 4, booster pump 5, water sprayer 6, flow back water inlet 7, reflux
Water outlet 8, the first lower clapboard 9, the first upper spacer 10, the second upper spacer 11, the second lower clapboard 12, mixed zone 13, flotation area 14,
Oil collecting zone 15, overflow ducts 16, gathering ground 17, flotation agent tank 18.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and detailed description.
A kind of partial reflux dissolved air flotation system as shown in Figure 1, including flocculation basin 1, floation tank 2, dissolving 3, decompression
Valve 4, booster pump 5, water sprayer 6 and flotation agent tank 18, flocculation basin outlet are connected by pipeline with floation tank import, are set on floation tank
There are reflux water inlet 7 and recycling effluent mouth 8, is successively fixed with the first lower clapboard 9, the first upper spacer from left to right in floation tank
10, the second upper spacer 11 and the second lower clapboard 12, the first lower clapboard are obliquely installed to the first upper spacer direction, the first lower clapboard,
Second lower clapboard is equipped with gap between floation tank top, and the first upper spacer, the second upper spacer are between flotation bottom of pond portion
Equipped with gap, the space between the first lower clapboard and floation tank forms mixed zone 13, and flotation agent tank is by protruding into mixed zone bottom
Pipeline be connected with floation tank, floation tank import be set to mixed zone side, reflux water inlet be set to mixed zone bottom, flow back into
The mouth of a river is set to mixed zone bottom, and space between the first lower clapboard and the second upper spacer forms flotation area 14, the first upper spacer with
Space between second upper spacer forms oil collecting zone 15, and the height of the second upper spacer is greater than the height of the first upper spacer, on second
Gap between partition and the second lower clapboard forms overflow ducts 16, and the space between the second lower clapboard and floation tank, which is formed, catchments
Area 17, floation tank outlet are set to gathering ground side, and recycling effluent mouth is set to gathering ground bottom, and recycling effluent mouth is by pipeline and increases
Press pump is connected, and the regurgitant volume of recycling effluent mouth is the 25~50% of floation tank water inlet inflow, booster pump outlet and water sprayer
Import is connected, and water sprayer outlet is connected by pipeline with dissolving import, and dissolving outlet is connected with pressurizing valve import, pressure reducing valve
Outlet is connected by pipeline with reflux water inlet.
Operational process of the invention are as follows: the effluent recycling after a part of oil removing is pressurizeed with booster pump, is delivered to water-jet
Device carries out molten gas after being mixed into air into water outlet from water sprayer in dissolving, and dissolved air water is directly entered floating after pressure reducing valve depressurizes
Mixed zone in scavenger is mixed with the oily waste water from flocculation basin, and oily waste water after mixing carries out flotation in flotation area,
The foam evolution water surface concentrates on oil collecting zone, and foam escapes up the water surface and concentrates on oil collecting zone, and is struck off foam by scraper plate, and floats
The water of constituency bottom partially carries out reflux pressurization from the discharge of recycling effluent mouth, part is then through overflow ducts overflow to gathering ground again
It directly exports and is discharged from floation tank.
The present invention is constituted simply, and stable, the water of pressurization is few, and low energy consumption, does not promote to emulsify in floatation process, flotation
High treating effect
Above-mentioned embodiment is only a preferred solution of the present invention, not the present invention is made in any form
Limitation, there are also other variations and modifications on the premise of not exceeding the technical scheme recorded in the claims.
Claims (6)
1. a kind of partial reflux dissolved air flotation system, which is characterized in that including flocculation basin (1), floation tank (2), dissolving (3),
Pressure reducing valve (4), booster pump (5) and water sprayer (6), the floation tank are equipped with reflux water inlet (7) and recycling effluent mouth (8),
The flocculation basin outlet is connected with floation tank import by pipeline, and the recycling effluent mouth is connected by pipeline with booster pump, institute
It states booster pump outlet to be connected with water sprayer import, the water sprayer outlet is connected by pipeline with dissolving import, the molten gas
Tank outlet is connected with pressurizing valve import, and the decompression valve outlet is connected by pipeline with reflux water inlet.
2. a kind of partial reflux dissolved air flotation system according to claim 1, which is characterized in that from a left side in the floation tank
It turns right and is successively fixed with the first lower clapboard (9), the first upper spacer (10), the second upper spacer (11) and the second lower clapboard (12), institute
It states the first lower clapboard, the second lower clapboard and is equipped with gap between floation tank top, first upper spacer, the second upper spacer are equal
Gap is equipped between flotation bottom of pond portion, the space between the first lower clapboard and floation tank forms mixed zone (13), the flotation
Pond import is set to mixed zone side, and the reflux water inlet is set to mixed zone bottom, and the reflux water inlet is set to mixed zone bottom
Portion, the space between the first lower clapboard and the second upper spacer forms flotation area (14), between the first upper spacer and the second upper spacer
Space form oil collecting zone (15), gap between the second upper spacer and the second lower clapboard forms overflow ducts (16), under second
Space between partition and floation tank forms gathering ground (17), and the floation tank outlet is set to gathering ground side, described to flow back out
The mouth of a river is set to gathering ground bottom.
3. a kind of partial reflux dissolved air flotation system according to claim 2, which is characterized in that first lower clapboard to
First upper spacer direction is obliquely installed.
4. a kind of partial reflux dissolved air flotation system according to claim 2 or 3, which is characterized in that on described second every
The height of plate is greater than the height of the first upper spacer.
5. a kind of partial reflux dissolved air flotation system according to claim 4, which is characterized in that the molten gas of partial reflux
Floatation system further includes flotation agent tank (18), and the flotation agent tank is connected by protruding into the pipeline of mixed zone bottom with floation tank
It is logical.
6. a kind of partial reflux dissolved air flotation system according to claim 1, which is characterized in that the recycling effluent mouth
Regurgitant volume is the 25~50% of floation tank water inlet inflow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811118639.4A CN109499776A (en) | 2018-09-26 | 2018-09-26 | A kind of partial reflux dissolved air flotation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811118639.4A CN109499776A (en) | 2018-09-26 | 2018-09-26 | A kind of partial reflux dissolved air flotation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109499776A true CN109499776A (en) | 2019-03-22 |
Family
ID=65746133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811118639.4A Pending CN109499776A (en) | 2018-09-26 | 2018-09-26 | A kind of partial reflux dissolved air flotation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109499776A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1210092A (en) * | 1998-09-21 | 1999-03-10 | 孙光跃 | Water treatment process by jet gas soluted floatation |
| CN102765773A (en) * | 2012-08-10 | 2012-11-07 | 北京中农天陆微纳米气泡水科技有限公司 | Air floatation device |
| CN104888636A (en) * | 2015-05-28 | 2015-09-09 | 中国石油化工股份有限公司 | Micro-nano bubble generation device and sewage purification system |
| CN204803036U (en) * | 2015-06-12 | 2015-11-25 | 中国海洋石油总公司 | Flotation of advection formula removes oil tank |
| CN205759882U (en) * | 2016-06-29 | 2016-12-07 | 南京科润工业介质股份有限公司 | Cutting fluid containing oil slick is carried out the trough body structure of fluid secondary separation |
| CN106395959A (en) * | 2016-11-02 | 2017-02-15 | 李伟 | Horizontal flow type automatic deslagging air-flotation device |
| CN206814425U (en) * | 2017-06-09 | 2017-12-29 | 北京北方宏拓环保设备制造有限公司 | A kind of intelligent and high-efficiency dissolved gas floatator |
| CN107721025A (en) * | 2017-11-22 | 2018-02-23 | 上海悦境环保科技有限公司 | The processing method of a kind of oil-containing and oil wastewater and its efficiently separate system |
| CN207294243U (en) * | 2017-08-22 | 2018-05-01 | 山东蓝驰环境科技股份有限公司 | A kind of dissolved gas floatator |
-
2018
- 2018-09-26 CN CN201811118639.4A patent/CN109499776A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1210092A (en) * | 1998-09-21 | 1999-03-10 | 孙光跃 | Water treatment process by jet gas soluted floatation |
| CN102765773A (en) * | 2012-08-10 | 2012-11-07 | 北京中农天陆微纳米气泡水科技有限公司 | Air floatation device |
| CN104888636A (en) * | 2015-05-28 | 2015-09-09 | 中国石油化工股份有限公司 | Micro-nano bubble generation device and sewage purification system |
| CN204803036U (en) * | 2015-06-12 | 2015-11-25 | 中国海洋石油总公司 | Flotation of advection formula removes oil tank |
| CN205759882U (en) * | 2016-06-29 | 2016-12-07 | 南京科润工业介质股份有限公司 | Cutting fluid containing oil slick is carried out the trough body structure of fluid secondary separation |
| CN106395959A (en) * | 2016-11-02 | 2017-02-15 | 李伟 | Horizontal flow type automatic deslagging air-flotation device |
| CN206814425U (en) * | 2017-06-09 | 2017-12-29 | 北京北方宏拓环保设备制造有限公司 | A kind of intelligent and high-efficiency dissolved gas floatator |
| CN207294243U (en) * | 2017-08-22 | 2018-05-01 | 山东蓝驰环境科技股份有限公司 | A kind of dissolved gas floatator |
| CN107721025A (en) * | 2017-11-22 | 2018-02-23 | 上海悦境环保科技有限公司 | The processing method of a kind of oil-containing and oil wastewater and its efficiently separate system |
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Application publication date: 20190322 |
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