CN108455695A - A kind of impact-resistant efficient air-floating system and its sewage water treatment method - Google Patents
A kind of impact-resistant efficient air-floating system and its sewage water treatment method Download PDFInfo
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- CN108455695A CN108455695A CN201810463787.3A CN201810463787A CN108455695A CN 108455695 A CN108455695 A CN 108455695A CN 201810463787 A CN201810463787 A CN 201810463787A CN 108455695 A CN108455695 A CN 108455695A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 87
- 238000007667 floating Methods 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims description 8
- 239000010865 sewage Substances 0.000 title claims description 7
- 238000011282 treatment Methods 0.000 title claims description 5
- 238000005189 flocculation Methods 0.000 claims abstract description 62
- 230000016615 flocculation Effects 0.000 claims abstract description 62
- 238000005345 coagulation Methods 0.000 claims abstract description 37
- 230000015271 coagulation Effects 0.000 claims abstract description 37
- 239000000701 coagulant Substances 0.000 claims description 18
- 230000000694 effects Effects 0.000 claims description 12
- 239000002245 particle Substances 0.000 claims description 8
- 238000004062 sedimentation Methods 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 7
- 238000000926 separation method Methods 0.000 claims description 7
- 239000010802 sludge Substances 0.000 claims description 7
- 230000009471 action Effects 0.000 claims description 5
- 230000014759 maintenance of location Effects 0.000 claims description 5
- 238000001556 precipitation Methods 0.000 claims description 5
- 238000009825 accumulation Methods 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 230000000717 retained effect Effects 0.000 claims 1
- 238000007790 scraping Methods 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 230000006641 stabilisation Effects 0.000 abstract description 2
- 238000011105 stabilization Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 20
- 238000013019 agitation Methods 0.000 description 3
- 238000005188 flotation Methods 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical group Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009300 dissolved air flotation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003311 flocculating effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000036284 oxygen consumption Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
- 239000003403 water pollutant Substances 0.000 description 1
Classifications
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5281—Installations for water purification using chemical agents
Landscapes
- 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)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Physical Water Treatments (AREA)
Abstract
The invention discloses a kind of impact-resistant efficient air-floating systems, include mainly coagulation area, the first flocculation zone, the second flocculation zone and mud-water separating area, the coagulation area, the first flocculation zone are respectively equipped with the first agitating device, the second agitating device and third agitating device in the second flocculation zone, the mud-water separating area includes air-dissolving air-float area, decanting zone, dross area and clear water zone, the air-dissolving air-float area is equipped with molten gas release head with the second flocculation zone adjacent, and the air-dissolving air-float area is equipped with mud scraper close to the edge in dross area.The invention enables water inlet SS in the case of the fluctuation of tens mg/L to 1000mg/L, stable effluent quality, and handles that load is high, effluent quality is good and the time of stabilization while the dosage and flocculation reaction that can reduce flocculant.
Description
Technical field
The invention belongs to technical field of sewage, and in particular at a kind of impact-resistant efficient air-floating system and its sewage
Reason method.
Background technology
Many Industrial Waste Water Treatments factories biochemistry pool water outlet concentration of suspension (such as winter very big as seasonal variations fluctuate
It is low, summer is high) or with the variation into water pollutant (including SS- suspended solids and COD- chemical oxygen consumption (COC)s), biochemistry pool goes out
Water SS also can be by larger fluctuation；In the improvement of water body (such as black-odor riverway etc.), the SS that heavy rain season enters water body is much high
In usually and fluctuation it is larger；When planning that Rainwater Resources utilize, generally require to handle initial rainwater, and just rain is same
Have the characteristics that SS amplitudes of variation are big.Therefore, it is necessary to develop a kind of resistance to SS impact and efficient processing unit to such waste water into
Row processing.
Based on the anti-suspended matter load impact energy force difference of existing dissolved air flotation process, processing load is low, takes up a large area etc. and to lack
Point, the characteristics of being precipitated in conjunction with air-dissolving air-float and inclined tube (plate) and advantage, develop a kind of anti-suspended matter load fluctuation impact, simultaneously
Have that hydraulic loading is high, novel compositions air-flotation system of stable effluent quality.
Invention content
The purpose of the present invention is to solve the above problems, and propose a kind of impact-resistant efficient air-floating system and its dirt
Method for treating water so that SS is in the case of the fluctuation of tens mg/L to 1000mg/L for water inlet, stable effluent quality, and handles negative
Lotus is high, effluent quality is good and the time of stabilization while the dosage and flocculation reaction that can reduce flocculant.
The present invention provides a kind of impact-resistant efficient air-floating systems, include mainly coagulation area, the first flocculation zone, the second wadding
Coagulation zone and mud-water separating area, the coagulation area, the first flocculation zone are respectively equipped with the first agitating device, second in the second flocculation zone
Agitating device and third agitating device, the mud-water separating area include air-dissolving air-float area, decanting zone, dross area and clear water zone, institute
It states air-dissolving air-float area and is equipped with molten gas release head, edge of the air-dissolving air-float area close to dross area with the second flocculation zone adjacent
Equipped with mud scraper.
As preferred means, set using perpendicular stream gallery type structure between the coagulation area, the first flocculation zone, the second flocculation zone
It sets.
As further preferred means, liquid level upper end is equipped with coagulant dosage mouth in the coagulation area.
As further preferred means, first flocculation zone bottom end is equipped with flocculant concentration mouth.
As further preferred means, the molten gas release head includes molten gas amplifier and Gas dissolving pipe, Gas dissolving pipe setting
Below molten gas amplifier, Gas dissolving pipe generates abundant microbubble.
As further preferred means, the decanting zone top is equipped with inclined tube layer, and lower part is equipped with sedimentation and struggles against, the inclined tube
Layer is equipped with inclined inclined tube, and the angle of inclination of inclined tube is 60 °, and inclined tube length is 75cm.
A kind of sewage water treatment method of impact-resistant efficient air-floating, is as follows：
1) coagulant is added：Accessing pending water is passed into coagulation area, in coagulation area liquid level upper end dosing coagulant, passes through
By coagulant and accessing pending water coagulation, accessing pending water flows out coagulation area and enters the first flocculation zone bottom one agitating device from top to bottom
End；
2) flocculant is added：Flocculant is added in the first flocculation zone bottom end, processing water flows out the first flocculation zone from bottom to up
The second flocculation zone top is entered, flocculant is mixed with processing water by the second agitating device, flows into the second flocculation zone, then
So that flocculant and processing water reach uniform mixes and flocculated effect under third agitating device；
3) mud-water separation：The water outlet of second flocculation zone flows into air-dissolving air-float area from bottom to top, and the setting of air-dissolving air-float area is multiple high
Molten gas release head is imitated, molten gas release head generates abundant microbubble, and flocculation zone is discharged under the action of microbubble, in air-dissolving air-float
Area carries out mud-water separation, and flocculate accumulates in air-dissolving air-float area water surface upper end, a part fails under the buoyance lift effect of microbubble
The bulky grain or heavier suspended matter floated, then flow through inclined tube from top to bottom, under the precipitation of inclined tube, realizes effective cut
Removal is stayed, the particle or suspended matter to float on the surface is scraped into particle or suspended matter in dross area by mud scraper；
4) draining, spoil disposal：The water gone out from inclined tube laminar flow is flowed into clear water zone by decanting zone, and the sludge of inclined tube layer retention is heavy
It forms sediment in sedimentation bucket, is arranged sludge by settling bucket.
Using advantageous effect of the present invention：The device is in such a way that flotation and tube settling are combined, cleverly by air supporting
Function and the precipitation function of inclined tube be combined together, when water SS fluctuations are larger, top flotation, which can not achieve, to be effectively removed
SS, can further be removed by the inclined tube of lower part, and be concurrent tube settling, concurrent is due to water (flow) direction
It is identical as particle sedimentation direction, it can settle, solve incorgruous by impulsive force large viscosity, the difficult particle settled
The problems such as stream, lateral flow middle swash plate block, and theoretical sedimentation effect is best, either draws since lighter SS quantity increases suddenly
Water inlet fluctuation caused by the unexpected increase of the water inlet fluctuation or heavier SS that rise, can be realized by the device and be effectively removed,
In water inlet SS from the fluctuation of tens mg/L to 1000mg/L, stable effluent quality, and handle load height, effluent quality
Well and stablizes while the dosage of flocculant and the time of flocculation reaction can be reduced.
Description of the drawings
Fig. 1 is a kind of impact-resistant efficient air-floating system structure diagram proposed by the present invention.
In figure：1, the first agitating device；2, the second agitating device；3, third agitating device；4, molten gas release head；5, inclined tube
Layer；6, mud scraper；11, coagulation area；12, the first flocculation zone；13, the second flocculation zone；14, mud-water separating area；14-1, air-dissolving air-float
Area；14-2, decanting zone；14-3, dross area；14-4, clear water zone；21, accessing pending water；22, coagulant；23, flocculant；24, it presses
Contracting air；25, it is discharged；26, deslagging；27, spoil disposal.
Specific implementation mode
Present invention is further described in detail below in conjunction with the accompanying drawings：
A kind of impact-resistant efficient air-floating system of the present invention includes mainly coagulation area 11, the first flocculation zone 12, second wadding
Coagulation zone 13 and mud-water separating area 14, the coagulation area 11, the first flocculation zone 12 are respectively equipped with the first stirring in second flocculation zone 13
Device 1, the second agitating device 2 and third agitating device 3, the mud-water separating area 14 include air-dissolving air-float area 14-1, decanting zone
14-2, dross area 14-3 and clear water zone 14-4, the air-dissolving air-float area 14-1 are released with 13 adjacent of the second flocculation zone equipped with molten gas
First 4 are put, the air-dissolving air-float area 14-1 is equipped with mud scraper 6 close to the edge of dross area 14-3.
Using perpendicular stream gallery type structure setting between the coagulation area 11, the first flocculation zone 12, the second flocculation zone 13.
Liquid level upper end is equipped with coagulant dosage mouth in the coagulation area 11.Coagulant is added to mixed by coagulant dosage mouth
11 liquid level upper end of coagulation zone is uniformly mixed coagulant with accessing pending water 21 by the first agitating device 1.Coagulant is FeCl3, throw
Dosage is added at 5-20mg/L (in terms of Fe) using pipeline.
First flocculation zone, 12 bottom end is equipped with flocculant concentration mouth.Flocculant is added to first by flocculant concentration mouth
12 bottom end of flocculation zone, processing water flow from bottom to up, and are stirred by the second agitating device 2 so that flocculant is uniformly mixed with water
With flocculated effect.Flocculant concentration PAM, dosage 0.3-0.5mg/L, pipeline add.
The molten gas release head 4 includes molten gas amplifier and Gas dissolving pipe, and Gas dissolving pipe is arranged below molten gas amplifier, molten gas
Pipe generates abundant microbubble.
The tops the decanting zone 14-2 are equipped with inclined tube layer 5, and lower part is equipped with to settle and struggle against, and sedimentation bucket is taper bucket, described oblique
Tube layer 5 is equipped with inclined inclined tube, and the angle of inclination of inclined tube is 60 °, and inclined tube length is 75cm, inclined tube material PP.Inclined tube can change
At inclined plate.
Pending raw water 21 initially enters coagulation area 11, under the stirring action of coagulation blender 1, realizes 22 He of coagulant
The uniform mixing of raw water 21, it is ensured that system coagulation effect.Coagulation water outlet enters the first flocculation zone 12, and flocculant is added in this area
23, the impurity in water flocculates in the effect of flocculant, further assembles subsequently into 13 floccule body of the second flocculation zone and grows up, two-stage
Flocculation is all made of mechanical agitation, fully to realize flocculation reaction.Water after flocculation enters mud-water separating area 14, flows through from bottom to top
Molten gas discharges area 14-1, and molten gas release area is arranged multiple high-efficiency dissolued-air release heads 4, can generate abundant microbubble.Flocculation zone goes out
Water carries out mud-water separation under the action of microbubble, in mud-water separating area, and flocculate (density is smaller) is made in the buoyance lift of microbubble
Under, accumulates in and be known as body refuse on the water surface of Disengagement zone；A part of not floaty bulky grain or heavier suspended matter (density compared with
Greatly), then inclined tube is flowed through from top to bottom, under the precipitation of inclined tube, realizes effective retention removal.The setting of Disengagement zone top is scraped
Mud machine 6 can scrape 14 top mud scum of mud-water separating area to dross area 14-3, and taper bucket is arranged in lower part, for collecting inclined tube area
The sludge of 14-2 retentions.
It due to traditional air supporting, needs SS under the action of flocculant, forms big flco, could realize and effectively remove.
And the presence of lower part tube settling district, the requirement to flocculating effect is weakened, flocculant dosage can be reduced, shorten flocculation instead
Between seasonable, to save operating cost and investment.
A kind of sewage water treatment method of impact-resistant efficient air-floating, is as follows：
1) coagulant is added：Accessing pending water 21 is passed into coagulation area 11, in 11 liquid level upper end dosing coagulant of coagulation area,
By the first agitating device 1 by coagulant and accessing pending water coagulation, accessing pending water 21 flows out coagulation area 11 and enters from top to bottom
First flocculation zone, 12 bottom end；
2) flocculant is added：Flocculant is added in 12 bottom end of the first flocculation zone, processing water flows out the first flocculation from bottom to up
Area 12 enters 13 top of the second flocculation zone, mixes flocculant with processing water by the second agitating device 2, flows into the second flocculation
Area 13, then in third agitating device 3 times so that flocculant and processing water reach uniform mixes and flocculated effect；
3) mud-water separation：The water outlet of second flocculation zone 13 flows into air-dissolving air-float area 14-1, air-dissolving air-float area 14-1 from bottom to top
Multiple high-efficiency dissolued-air release heads 4 are set, and molten gas release head 4 generates abundant microbubble, and flocculation zone 14-1 water outlets are in microbubble
Under effect, in air-dissolving air-float area, 14-1 carries out mud-water separation, and flocculate accumulates in air-dissolving air-float under the buoyance lift effect of microbubble
Area 14-1 waters surface upper end, a part of not floaty bulky grain or heavier suspended matter, then flow through inclined tube, in inclined tube from top to bottom
Precipitation under, realize effective retention removal, the particle or suspended matter to float on the surface is by mud scraper 6 by particle or outstanding
Float scrapes into dross area 14-3；
4) draining, spoil disposal：The water flowed out from inclined tube layer 5 is flowed into clear water zone 14-4 by decanting zone 14-2, and inclined tube layer 5 is cut
Sludge is discharged by settling bucket in sedimentation bucket for the sludge settling stayed.
Embodiment
For handling contaminated river：Dry season, river water SS are probably fluctuated between 60-100mg/L, rainy season especially heavy rain
Season, river water SS may be up to 800-1200mg/L.
River water is put into the impact-resistant efficient air-floating system, coagulation area dosing coagulant FeCl3, dosage 10mg/L
(in terms of Fe), coagulation area use mechanical agitation, residence time 2min, mixing speed gradient G=250s-1, K=28；Flocculation zone is thrown
Add flocculant PAM, dosage 0.4mg/L, using mechanical agitation, residence time 7min, Stirring energy density=3W.h/m3, go out
Water SS stablizes in 10mg/L.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Profit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent requirements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiment being appreciated that.
The present invention is not limited to above to the description of embodiment, those skilled in the art according to disclosure of the present invention,
The creative work improvement and modification that be carried out need not be passed through on the basis of the present invention, all should protection scope of the present invention it
It is interior.
Claims (7)
1. a kind of impact-resistant efficient air-floating system, it is characterised in that：Mainly include coagulation area (11), the first flocculation zone (12),
Second flocculation zone (13) and mud-water separating area (14), the coagulation area (11), the first flocculation zone (12), the second flocculation zone (13) are interior
It is respectively equipped with the first agitating device (1), the second agitating device (2) and third agitating device (3), mud-water separating area (14) packet
Include air-dissolving air-float area (14-1), decanting zone (14-2), dross area (14-3) and clear water zone (14-4), the air-dissolving air-float area (14-
1) molten gas release head (4) is equipped with the second flocculation zone (13) adjacent, the air-dissolving air-float area (14-1) is close to dross area (14-
3) edge is equipped with mud scraper (6).
2. a kind of impact-resistant efficient air-floating system according to claim 1, it is characterised in that：The coagulation area (11),
Using perpendicular stream gallery type structure setting between first flocculation zone (12), the second flocculation zone (13).
3. a kind of impact-resistant efficient air-floating system according to claim 1, it is characterised in that：In the coagulation area (11)
Liquid level upper end is equipped with coagulant dosage mouth.
4. a kind of impact-resistant efficient air-floating system according to claim 1, it is characterised in that：First flocculation zone
(12) bottom end is equipped with flocculant concentration mouth.
5. a kind of impact-resistant efficient air-floating system according to claim 1, it is characterised in that：The molten gas release head
(4) include molten gas amplifier and Gas dissolving pipe, below molten gas amplifier, Gas dissolving pipe generates abundant microbubble for Gas dissolving pipe setting.
6. a kind of impact-resistant efficient air-floating system according to claim 1, it is characterised in that：The decanting zone (14-2)
Top is equipped with inclined tube layer (5), and lower part is equipped with sedimentation and struggles against, and the inclined tube layer is equipped with inclined inclined tube, and the angle of inclination of inclined tube is
60 °, inclined tube length is 75cm.
7. a kind of sewage water treatment method of impact-resistant efficient air-floating, it is characterised in that：It is as follows：
1) coagulant is added：Accessing pending water (21) is passed into coagulation area (11), and coagulation is added in coagulation area (11) liquid level upper end
Agent, by the first agitating device (1) by coagulant and accessing pending water (21) coagulation, accessing pending water flows out coagulation area from top to bottom
(11) the first flocculation zone (12) bottom end is entered；
2) flocculant is added：Flocculant is added in the first flocculation zone (12) bottom end, processing water flows out the first flocculation zone from bottom to up
(12) the second flocculation zone (13) top is entered, flocculant is mixed with processing water by the second agitating device (2), flows into second
Flocculation zone (13), then so that flocculant and processing water reach uniform mixes and flocculated effect under third agitating device (3)；
3) mud-water separation：Second flocculation zone (13) water outlet flows into air-dissolving air-float area (14-1), air-dissolving air-float area (14- from bottom to top
1) multiple high-efficiency dissolued-air release heads (4) are set, and molten gas release head (4) generates abundant microbubble, and flocculation zone (14-1) water outlet exists
Under the action of microbubble, mud-water separation is carried out at air-dissolving air-float area (14-1), flocculate is under the buoyance lift effect of microbubble, accumulation
In air-dissolving air-float area (14-1) water surface upper end, a part of not floaty bulky grain or heavier suspended matter then flow from top to bottom
Through inclined tube, under the precipitation of inclined tube, effective retention removal is realized, the particle or suspended matter to float on the surface is by scraping mud
Machine (6) scrapes into particle or suspended matter in dross area (14-3)；
4) draining, spoil disposal：The water flowed out from inclined tube layer (5) is flowed into clear water zone (14-4), inclined tube layer by decanting zone (14-2)
(5) sludge is discharged by settling bucket in sedimentation bucket for the sludge settling retained.
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| CN201810463787.3A CN108455695A (en) | 2018-05-15 | 2018-05-15 | A kind of impact-resistant efficient air-floating system and its sewage water treatment method |
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| CN201810463787.3A CN108455695A (en) | 2018-05-15 | 2018-05-15 | A kind of impact-resistant efficient air-floating system and its sewage water treatment method |
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| CN112830561A (en) * | 2021-02-22 | 2021-05-25 | 国投信开水环境投资有限公司 | Sand settling device and method |
| CN112897731A (en) * | 2021-01-07 | 2021-06-04 | 重庆市环境保护工程设计研究院有限公司 | Novel ultramicro separation integrated equipment |
| CN113788566A (en) * | 2021-09-30 | 2021-12-14 | 北京首敬科技有限公司 | Intelligent sewage separation system |
| CN113830943A (en) * | 2021-10-08 | 2021-12-24 | 江苏京源环保股份有限公司 | Ultrasonic-combined efficient electric floating sewage treatment process and treatment equipment thereof |
| CN115745299A (en) * | 2022-11-30 | 2023-03-07 | 中铁环境科技工程有限公司 | Excrement and sewage wastewater treatment device and using method |
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