CN106865649A - A kind of star-like filter back washing perforation water distributor and method - Google Patents
A kind of star-like filter back washing perforation water distributor and method Download PDFInfo
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- CN106865649A CN106865649A CN201710177404.1A CN201710177404A CN106865649A CN 106865649 A CN106865649 A CN 106865649A CN 201710177404 A CN201710177404 A CN 201710177404A CN 106865649 A CN106865649 A CN 106865649A
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- China
- Prior art keywords
- water
- star
- gas
- water distribution
- apopore
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Classifications
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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
- C02F1/006—Water distributors either inside a treatment tank or directing the water to several treatment tanks; Water treatment plants incorporating these distributors, with or without chemical or biological tanks
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/16—Regeneration of sorbents, filters
Abstract
The present invention provides a kind of star-like filter back washing perforation water distributor and method, and the perforation water distributor includes water distribution supervisor, water distribution branch pipe, gas distribution supervisor and gas distributionbranch pipe, and the both sides of the water distribution supervisor symmetrically connect the water distribution branch pipe；The gas distributionbranch pipe is provided with one end of plug and inserts at the water distribution branch pipe 80 ~ 85%, and the other end connects the gas distribution supervisor；The water distribution branch pipe section is star-like, and multiple rows of apopore is provided with along water (flow) direction on tube wall；The gas distributionbranch pipe is provided with multiple rows of venthole along gas flow.Methods described includes：1）Air is passed through to star-like filter back washing in gas distribution supervisor and gas distributionbranch pipe；2）The water flowing in water distribution supervisor and water distribution branch pipe, air is passed through in gas distribution supervisor and gas distributionbranch pipe, and air-water backwashing is carried out simultaneously to star-like filter tank；3）Water flowing is to star-like filter back washing in water distribution supervisor and water distribution branch pipe.The present invention can make star-like filter back washing water distribution uniform, alleviate filter clogging, improve backwash effect.
Description
Technical field
The invention belongs to environmental protection treatment technical field, and in particular to a kind of star-like filter back washing perforation water distributor and side
Method.
Background technology
Filtering plays an important role as an indispensable ring always in the middle of water process, and its reason is filtering skill
It is relatively low that art enters gate threshold, and applicability is wide, is easy to safeguard, compared to other sewage disposal links such as biological moieties operating cost
It is low.During filtrate use, after filtering ponds work a period of time, because the pollutant being trapped penetrates filtering layer, make water quality urgency
Drastic change is bad, or is increased to more than maximum allowable resistance, it is necessary to using reverse flow (from bottom to top) due to filtering layer filtration resistance
Filter layer is rinsed, so that filtering layer regenerates, normal work is restarted in filter tank.
The effect of filter underdrain system is flushing water is uniformly distributed on whole filter tank area.Water distribution uniformity liquidates
Wash influential effect very big.Water distribution is uneven, part filtering layer underexpansion, and filtering layer expansion in part is exaggerated or even can cause local holding
Support layer is moved, and in turn results in Lou sand phenomenon.Water distribution system has " large resistance underdrain system " and " small resistance water wiring system " two
Plant citation form, also middle resistance water distribution system.Perforation water distributor, the boring aeration pipe of existing water distribution system typically separately set
Put, water distributor main flow velocity is low, and resistance is low, branch pipe flow velocity is high, and resistance is high, it is uniform to ensure each branch pipe water distribution, distribution, typically
Using oblique 45 ° equidistant perforates of pipe.But the mixed effect that is provided separately water distributor and its gas of the mode of aeration tube and water is poor, circle
Equidistant perforate water distribution DeGrain is managed, backwash effect is poor.
The content of the invention
For the defect that prior art is present, it is an object of the invention to provide a kind of star-like filter back washing perforation water distribution
Pipe and method, can make star-like filter back washing water distribution uniform, alleviate filter clogging, improve backwash effect.
To achieve the above objectives, the present invention is adopted the technical scheme that：
A kind of star-like filter back washing perforation water distributor, including water distribution supervisor, water distribution branch pipe, gas distribution supervisor and gas distribution branch
Pipe, the both sides of the water distribution supervisor symmetrically connect the water distribution branch pipe；One end insertion that the gas distributionbranch pipe is provided with plug is described
At water distribution branch pipe 80~85%, the other end connects the gas distribution supervisor；The water distribution branch pipe section is star-like, along current on tube wall
Direction is provided with multiple rows of apopore；The gas distributionbranch pipe is provided with multiple rows of venthole along gas flow.
Further, the gas distribution supervisor is endless tube, and endless tube inner side is located at the junction of the gas distributionbranch pipe.
Further, multiple rows of apopore is specially 4 rows, be arranged on two-by-two respectively water distribution branch pipe hub-and-spoke configuration in
On the edged surface of axisymmetrical and and axis parallel, and 4 discharge water holes in being staggeredly correspondingly arranged up and down.
Further, the adjacent apopore centre-to-centre spacing in the often discharge water hole of multiple rows of apopore meets relational expression：dn=
dn-1+ ω × L, wherein, dnIt is n-th apopore and (n+1)th apopore centre-to-centre spacing, dn-1It is (n-1)th apopore and n-th
Apopore centre-to-centre spacing, L is the pipe range of water distribution branch pipe where multiple rows of apopore, and ω is the total face of apopore of all gas distributionbranch pipes
Product and the star-like filter tank area ratio, and ω=0.005~0.009.
Further, the often discharge water hole of multiple rows of apopore increases successively along the aperture of water (flow) direction, and meets
Relational expression：Wherein, Dn+1It is (n+1)th aperture of apopore, DnIt is n-th aperture of apopore, dn+1
It is (n+1)th apopore and the n-th+2 apopore centre-to-centre spacing.
Further, multiple rows of venthole is specially 5 rows, often discharge stomata with the axis parallel of body, it is adjacent
The central angle corresponding to arc tube wall between two discharge stomatas is 72 °.
A kind of star-like filter back washing method, is, using above-mentioned perforation water distributor, to comprise the following steps：
1) be passed through air to star-like filter back washing in gas distribution supervisor and gas distributionbranch pipe, wherein air blasting intensity be 18~
20L/(s·m2), washing time is 2~3min；
2) water flowing in water distribution supervisor and water distribution branch pipe, is passed through air, to star-like filter in gas distribution supervisor and gas distributionbranch pipe
Pond carries out water-gas backwashing simultaneously, and wherein washing time is 3~5min, and air blasting intensity is 12~14L/ (sm2), water punching is strong
Degree meets relational expression：
In formula [1], q represents that water rushes intensity, L/ (sm2)；M represents safety coefficient, m=1.15~1.4；veRepresent maximum
The minimum fluidized voidage flow velocity of particle diameter filtrate, cm/s；vfRepresent the minimum fluidized voidage stream by the screen-aperture of filtrate weight 10%
Speed, cm/s；
3) it is responsible for water flowing in water distribution branch pipe to star-like filter back washing in water distribution, its reclaimed water rushes intensity for 3~4L/ (s
m2), washing time is 1~2min.
Further, the step 1)~total backwashing time 3) is 8~10min.
The beneficial effects of the present invention are：1st, star-like gas distributionbranch pipe, backwash water distribution is uniform, and developing result is good, to filtering layer
Disturbing influence is small；2nd, air water is fully combined, and bubble is fine and closely woven, and dissolved oxygen rate is high；3rd, rational in infrastructure, point-like aeration, energy consumption is low；4th, install
Convenient, deployment cost is low；5th, suitable for various large, medium and small filter back washing systems.
Brief description of the drawings
Fig. 1 is that star-like filter back washing of the invention is perforated the planar structure schematic diagram of water distributor, wherein 1- water distributions supervisor,
2- water distribution branch pipes, 3- gas distributionbranch pipes, 4- gas distributions supervisor；
Fig. 2 is the partial enlarged drawing at Y in Fig. 1；
Fig. 3 is the sectional view in A-A faces in Fig. 2, wherein a- water distribution branch pipes apopore, b- gas distributionbranch pipe ventholes；
Fig. 4 is the sectional view in B-B faces in Fig. 2.
Specific embodiment
The present invention is described in further details with specific embodiment below in conjunction with the accompanying drawings, described is to solution of the invention
Release rather than restriction.
The present invention provides a kind of star-like filter back washing perforation water distributor, its planar structure as depicted in figs. 1 and 2, including
Water distribution supervisor 1, water distribution branch pipe 2, gas distribution is responsible for 4 and gas distributionbranch pipe 3, and the both sides of the water distribution supervisor 1 are respectively symmetrically 9 institutes of connection
State water distribution branch pipe 2；The gas distributionbranch pipe 3 is provided with one end of plug and inserts at the 80~85% of the water distribution branch pipe 2, and the other end connects
Meet described gas distribution supervisor 4, Fig. 3 and Fig. 4 and each provide local certain root gas distributionbranch pipe and the section view knot of water distribution branch pipe connection in Fig. 1
Composition；The gas distribution supervisor 4 is endless tube, and endless tube inner side is located at the junction of the gas distributionbranch pipe；The water distribution branch pipe 9
Section is star-like, and 4 discharge water hole a are provided with along water (flow) direction on tube wall, is arranged on the edge of water distribution branch pipe hub-and-spoke configuration two-by-two respectively
On the symmetrical edged surface in axis and and axis parallel, and 4 discharge water holes in being staggeredly correspondingly arranged up and down, such as Fig. 3 and Fig. 4
It is shown；The gas distributionbranch pipe is provided with 5 discharge stomata b along gas flow, often discharge stomata with the axis parallel of body, it is adjacent
The central angle corresponding to arc tube wall between two discharge stomatas is 72 °.
Further, the adjacent apopore centre-to-centre spacing in the often discharge water hole in the 4 discharge water hole meets relational expression：dn=
dn-1+ω×L；Wherein, dnIt is n-th apopore and (n+1)th apopore centre-to-centre spacing, dn-1It is (n-1)th apopore and n-th
Apopore centre-to-centre spacing, wherein d1Take 10cm；L is the pipe range of water distribution branch pipe where multiple rows of apopore, takes 3.0m；ω is all
The apopore gross area of gas distributionbranch pipe and the star-like filter tank area ratio, take ω=0.0065.
Further, the often discharge water hole in the 4 discharge water hole increases successively along the aperture of water (flow) direction, and meets pass
It is formula：Wherein, Dn+1It is (n+1)th aperture of apopore, DnIt is n-th aperture of apopore, dn+1For
(n+1)th apopore and the n-th+2 apopore centre-to-centre spacing, wherein D1Take 5mm.
A kind of star-like filter back washing method, is, using above-mentioned perforation water distributor, to comprise the following steps：
1) air is passed through in gas distribution supervisor and gas distributionbranch pipe to star-like filter back washing, wherein air blasting intensity is 20L/
(s·m2), washing time is 3min；
2) water flowing in water distribution supervisor and water distribution branch pipe, is passed through air, to star-like filter in gas distribution supervisor and gas distributionbranch pipe
Pond carries out water-gas backwashing simultaneously, and wherein washing time is 5min, and air blasting intensity is 14L/ (sm2), water rushes intensity and meets pass
It is formula：
In formula [1], q represents that water rushes intensity, L/ (sm2)；M represents safety coefficient, m=1.35；veRepresent maximum particle diameter filter
The minimum fluidized voidage flow velocity of material, takes 1.1cm/s；vfRepresent the minimum fluidized voidage stream by the screen-aperture of filtrate weight 10%
Speed, takes 1.0cm/s；
3) it is responsible for water flowing in water distribution branch pipe to star-like filter back washing in water distribution, its reclaimed water rushes intensity for 3~4L/ (s
m2), washing time is 1min.
Using above-mentioned water distributor and the above method to star-like filter back washing after, the loss of flood peak of its clean filter bed reduction
More than 30%.
It should be appreciated that for those of ordinary skill in the art, can according to the above description be improved or converted,
And all these modifications and variations should be all fallen into the protection domain of application claims.
Claims (8)
1. a kind of star-like filter back washing perforation water distributor, it is characterised in that be responsible for including water distribution supervisor, water distribution branch pipe, gas distribution and
Gas distributionbranch pipe, the both sides of the water distribution supervisor symmetrically connect the water distribution branch pipe；Insert one end that the gas distributionbranch pipe is provided with plug
Enter at the water distribution branch pipe 80~85%, the other end connects the gas distribution supervisor；The water distribution branch pipe section is star-like, on tube wall
Multiple rows of apopore is provided with along water (flow) direction；The gas distributionbranch pipe is provided with multiple rows of venthole along gas flow.
2. a kind of star-like filter back washing perforation water distributor according to claim 1, it is characterised in that the gas distribution supervisor
It is endless tube, endless tube inner side is located at the junction of the gas distributionbranch pipe.
3. a kind of star-like filter back washing perforation water distributor according to claim 2, it is characterised in that multiple rows of water outlet
Hole is specially 4 rows, is arranged on two-by-two respectively on the edged surface symmetrical along axis of water distribution branch pipe hub-and-spoke configuration and and axis
It is parallel, and 4 discharge water holes are in staggeredly to be correspondingly arranged up and down.
4. a kind of star-like filter back washing perforation water distributor according to claim 3, it is characterised in that multiple rows of water outlet
The adjacent apopore centre-to-centre spacing in the often discharge water hole in hole meets relational expression：dn=dn-1+ω×L；Wherein, dnIt is n-th apopore
With (n+1)th apopore centre-to-centre spacing, dn-1It is (n-1)th apopore and n-th apopore centre-to-centre spacing, L is multiple rows of apopore
The pipe range of place water distribution branch pipe, ω is the apopore gross area and the star-like filter tank area ratio, and ω of all gas distributionbranch pipes
=0.005~0.009.
5. a kind of star-like filter back washing perforation water distributor according to claim 4, it is characterised in that multiple rows of water outlet
The often discharge water hole in hole increases successively along the aperture of water (flow) direction, and meets relational expression：Wherein, Dn+1
It is (n+1)th aperture of apopore, DnIt is n-th aperture of apopore, dn+1It is (n+1)th apopore and the n-th+2 apopores
Centre-to-centre spacing.
6. a kind of star-like filter back washing perforation water distributor according to claim 2, it is characterised in that multiple rows of outlet
Hole is specially 5 rows, often discharge stomata with the axis parallel of body, it is adjacent two discharge stomata between arc tube wall corresponding to
Central angle be 72 °.
7. a kind of star-like filter back washing method, is using above-mentioned perforation water distributor, it is characterised in that comprise the following steps：
1) air is passed through in gas distribution supervisor and gas distributionbranch pipe to star-like filter back washing, wherein air blasting intensity is 18~20L/
(s·m2), washing time is 2~3min；
2) water flowing in water distribution supervisor and water distribution branch pipe, air is passed through in gas distribution supervisor and gas distributionbranch pipe, same to star-like filter tank
Shi Jinhang water-gas backwashings, wherein washing time are 3~5min, and air blasting intensity is 12~14L/ (sm2), water rushes intensity expires
Sufficient relational expression：Q=m [(ve 2+vf 2)/2]1/2[1],
In formula [1], q represents that water rushes intensity, L/ (sm2)；M represents safety coefficient, m=1.15~1.4；veRepresent maximum particle diameter
The minimum fluidized voidage flow velocity of filtrate, cm/s；vfThe minimum fluidized voidage flow velocity by the screen-aperture of filtrate weight 10% is represented,
cm/s；
3) it is responsible for water flowing in water distribution branch pipe to star-like filter back washing in water distribution, its reclaimed water rushes intensity for 3~4L/ (sm2),
Washing time is 1~2min.
8. a kind of star-like filter back washing method according to claim 1, it is characterised in that the step 1)~3) total
Backwashing time is 8~10min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710177404.1A CN106865649B (en) | 2017-03-23 | 2017-03-23 | Star-shaped filter tank backwashing perforated water distribution pipe and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710177404.1A CN106865649B (en) | 2017-03-23 | 2017-03-23 | Star-shaped filter tank backwashing perforated water distribution pipe and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106865649A true CN106865649A (en) | 2017-06-20 |
| CN106865649B CN106865649B (en) | 2020-11-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710177404.1A Active CN106865649B (en) | 2017-03-23 | 2017-03-23 | Star-shaped filter tank backwashing perforated water distribution pipe and method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102390887A (en) * | 2011-10-13 | 2012-03-28 | 惠州市铭博实业发展有限公司 | Flap aerated biological filter and wastewater treatment method thereof |
| CN202643347U (en) * | 2011-11-24 | 2013-01-02 | 上海清顺环境工程有限公司 | Easy detachable, backwashing water distributor |
| CN203461837U (en) * | 2013-08-08 | 2014-03-05 | 陈凤珠 | Water distributor |
| CN204275586U (en) * | 2014-11-21 | 2015-04-22 | 北京金峡超滤设备有限责任公司 | Against oozing formula wastewater filtering device |
-
2017
- 2017-03-23 CN CN201710177404.1A patent/CN106865649B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102390887A (en) * | 2011-10-13 | 2012-03-28 | 惠州市铭博实业发展有限公司 | Flap aerated biological filter and wastewater treatment method thereof |
| CN202643347U (en) * | 2011-11-24 | 2013-01-02 | 上海清顺环境工程有限公司 | Easy detachable, backwashing water distributor |
| CN203461837U (en) * | 2013-08-08 | 2014-03-05 | 陈凤珠 | Water distributor |
| CN204275586U (en) * | 2014-11-21 | 2015-04-22 | 北京金峡超滤设备有限责任公司 | Against oozing formula wastewater filtering device |
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| Publication number | Publication date |
|---|---|
| CN106865649B (en) | 2020-11-20 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20201028 Address after: Room 401-402, building C, No.10 Huangshan Road, Beigou street, Xinyi City, Xuzhou City, Jiangsu Province Applicant after: JIANGSU ZHUORAN ENGINEERING CONSULTING Co.,Ltd. Address before: Nansha District Fengze road Guangzhou city Guangdong province 510000 No. 106 Applicant before: Guangzhou shengxia Intellectual Property Operation Co.,Ltd. Effective date of registration: 20201028 Address after: Nansha District Fengze road Guangzhou city Guangdong province 510000 No. 106 Applicant after: Guangzhou shengxia Intellectual Property Operation Co.,Ltd. Address before: 110168 Liaoning province Shenyang Hunnan Hunnan Road No. 9 Applicant before: SHENYANG JIANZHU University |
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