CN102583760A - Drop-jump type thin-water layer constructed wetland reaeration groove - Google Patents
Drop-jump type thin-water layer constructed wetland reaeration groove Download PDFInfo
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- CN102583760A CN102583760A CN2012100480387A CN201210048038A CN102583760A CN 102583760 A CN102583760 A CN 102583760A CN 2012100480387 A CN2012100480387 A CN 2012100480387A CN 201210048038 A CN201210048038 A CN 201210048038A CN 102583760 A CN102583760 A CN 102583760A
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- China
- Prior art keywords
- reoxygenation
- diversion section
- flow deflector
- water layer
- jumping
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
Disclosed is a drop-jump type thin-water layer constructed wetland reaeration groove, comprising a complex oxygen groove bed body, wherein the complex oxygen groove bed body is provided with a slope in the length direction thereof; the complex oxygen groove bed body is provided with a plurality of flow deflectors from a water inlet to a water outlet, with the flow deflectors being connected in an end to end manner; the front segment of the flow deflector is a downward curved surface, with the rear segment thereof being an upward curved surface; and the front segment of the flow deflector s higher than the rear segment of the flow deflector. The drop-jump type thin-water layer constructed wetland reaeration groove features simple structure, high efficiency, and convenient making and installation, requires no additional external energy, with little loss of the water head, and effectively solves the problem that the main body of the constructed wetland is lack of oxygen.
Description
Technical field
The present invention relates to environmental protection technology, dirty wastewater processing technology, be specifically related to a kind of thin water layer artificial swamp reoxygenation groove of the formula of jumping that falls.
Background technology
The research that artificial swamp carries out sewage purification starts from a kind of wastewater treatment new technology that grows up the end of the seventies; Its characteristics are reduced investment, cost is low, treatment effect good, maintenance is simple and the operation convenient; It is less relatively to be fit to the water yield; Variation water quality is little, the villages and small towns WWT that level of management are not high.
The dissolved oxygen deficiency is the important factor of restriction artificial swamp processing efficiency, and dissolved oxygen is mainly secreted the oxygen that oxygen and sewage carry from atmosphere natural reaeration, root system of plant in the conventional artificial wetland.Most mikrobe all belongs to aerobic in WWT, and therefore under anoxia condition, biology can not carry out normal aerobic repiration, so sufficient dissolved oxygen is to improve the effective way of artificial swamp purification efficiency.Conventional reoxygenation technology comprises aeration aerating, drop reoxygenation and groove reoxygenation etc. in the artificial swamp.Watercourse aeration has quick, efficient, simple and easy to do characteristics, but needs to consume lot of energy; The drop reoxygenation is a kind of effective natural oxygenation mode, but needs bigger physical features drop, and is more suitable in the place with certain slope; General reoxygenation groove reoxygenation energy consumption is low, but the reoxygenation effect can not guarantee.
Summary of the invention
The purpose of this invention is to provide a kind of thin water layer artificial swamp reoxygenation groove of the formula of jumping that falls, it is simple in structure, efficient, energy-conservation and cost is low, can solve problems such as prior art reoxygenation effect is low, power consumption is high, head loss is big.
The thin water layer artificial swamp reoxygenation groove of the formula of jumping that falls of the present invention; Comprise reoxygenation troughstand body, reoxygenation troughstand body has the gradient along its length, from the water-in to the water outlet, is provided with a plurality of flow deflectors in the said reoxygenation troughstand body; Join end to end successively together between the said flow deflector; The leading portion of said flow deflector is downward curved surface, and its back segment is curved surface upwards, and the leading portion of flow deflector is higher than back segment.
The landing edge and first diversion section before the leading portion of said flow deflector comprises; Its back segment comprises second diversion section, the 3rd diversion section and back landing edge; Said first diversion section is downward smooth surface, and second diversion section is smooth surface upwards, and the 3rd diversion section is made up of at least two folding faces that make progress; First diversion section and the 3rd diversion section are through the second diversion section smooth transition, and the front end of first diversion section is higher than the rear end of the 3rd diversion section.
The preceding landing edge overlap joint of chopped-off head flow deflector is at the water-in of reoxygenation troughstand body; The preceding landing edge of non-chopped-off head flow deflector overlaps below the back landing edge of previous stage flow deflector; The back landing edge overlap joint of final stage flow deflector prevents that at the water outlet of reoxygenation troughstand body current from leaking.
Said the 3rd diversion section is made up of the first folding face that makes progress, the second folding face and the 3rd folding face from the front end to the rear end successively, the angle of the first folding face and horizontal plane
1Be acute angle, the angle of the second folding face and horizontal plane
2Be acute angle, the angle of the 3rd folding face and horizontal plane
3Be acute angle, and α
1＞α
2＞α
3, the corner angle that adjacent two folding faces form can be strengthened flow turbulence effectively.
Further, the cross-directional length of said first diversion section is L
1, the cross-directional length sum of second diversion section and the 3rd diversion section is L
2, and L
1＞L
2
Further, the cross-directional length of said first diversion section is L
1, the cross-directional length sum of second diversion section and the 3rd diversion section is L
2, and L
1: L
2=4:1.
Further, the front end of first diversion section of said flow deflector is 0.7%～2% with respect to the gradient of the rear end of the 3rd diversion section.
Further, the said reoxygenation troughstand body gradient along its length is 0.7%～2%.
Said flow deflector and reoxygenation troughstand body are wide, and the lap length of adjacent two flow deflectors is at least 0.05m, reduce current and leak.
Said reoxygenation troughstand body is a plain concrete, carries flow deflector.Said flow deflector adopts potter's clay to fire or plastic shaping, and surface irregularity is so that cause flow turbulence.
It is following to fall the thin water layer artificial swamp reoxygenation groove natural reaeration process of the formula of jumping: sewage gets into reoxygenation troughstand body through water-in, forms about 5 ~ 20mm thickness water layer, and thin water layer gets into the chopped-off head flow deflector.Sewage descends along the smooth surface of first diversion section of flow deflector, and effluent flow rate strengthens; Afterwards, sewage leans on inertia to get into next flow deflector through second diversion section, the 3rd diversion section generation hydraulic jump of flow deflector, and a hydraulic jump takes place current in whole process, and has strengthened flow turbulence, increases current and air contact area greatly.In the reoxygenation troughstand body a plurality of flow deflectors are arranged, through hydraulic jump repeatedly, dissolved oxygen amount increases sewage gradually, reaches the reoxygenation requirement at last successively, gets into the main part of artificial swamp through water outlet.Originally falls the thin water layer artificial swamp reoxygenation groove of the formula of jumping through being provided with at interval in the wetland, reoxygenation repeatedly helps to improve denitrification effect at interval, and at utmost reduces in the wetland organic residually, prolongs work-ing life of wetland.
Beneficial effect of the present invention:
1, simple in structure, make, install all very convenient, need not to increase outside resources and head loss is less.
2, in whole reoxygenation process, after sewage gets into, only need under gravity and action of inertia, just in flow deflector, to accomplish hydraulic jump and enter into next flow deflector, need not to increase outside resources and head loss is less.In whole hydraulic jump process, sewage mainly relies on the structure of flow deflector to accomplish hydraulic jump, and is less demanding to the physical features drop of artificial swamp.In addition, the corner angle of coarse surface of flow deflector and the 3rd diversion section have also been strengthened the turbulent fluctuation of current.Thereby hydraulic jump has each time all increased the contact area of sewage and air greatly, has solved artificial swamp main body anoxybiotic problem effectively, helps the degraded of pollutent.
3, the reoxygenation groove can be provided with along the wetland flow process according to practical situation at interval; Make the artificial swamp main body present the recurrent state of aerobic-anaerobic-anoxic-aerobic-anaerobic-anoxic; Help to grow the microbial population of difference in functionality, thereby improved artificial swamp Pollutant Treatment effect.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the structural representation of flow deflector.
Embodiment
Below in conjunction with accompanying drawing the present invention is described further.
The thin water layer artificial swamp reoxygenation groove of the formula of jumping that falls as shown in Figure 1 comprises reoxygenation troughstand body 1, and reoxygenation troughstand body 1 gradient along its length is 0.7%, in reoxygenation troughstand body 1, is provided with a plurality of flow deflectors 2 wide with reoxygenation troughstand body 1.Make things convenient for building operation, reoxygenation troughstand body 1 adopts plain concrete.
As shown in Figure 2, flow deflector 2 is made up of preceding landing edge 21, first diversion section 22, second diversion section 23, the 3rd diversion section and back landing edge 27 from the front end to the rear end successively.First diversion section 22 is downward smooth surface; Second diversion section 23 is smooth surface upwards; The 3rd diversion section is made up of the first folding face 24, the second folding face 25 and the 3rd folding face 26 from the front end to the rear end successively; The first folding face 24, the second folding face 25 and the 3rd folding face 26 all upwards are provided with, the angle of the first folding face 24 and horizontal plane
1Be acute angle, the angle of the second folding face 25 and horizontal plane
2Be acute angle, the angle of the 3rd folding face 26 and horizontal plane
3Be acute angle, and α
1＞α
2＞α
3 First diversion section 22 and the 3rd diversion section are through second diversion section, 23 smooth transition, and the front end of first diversion section 22 is higher than the rear end of the 3rd diversion section, and the front end of first diversion section 22 is 0.7% with respect to the gradient of the rear end of the 3rd diversion section.The cross-directional length of first diversion section 22 is L
1, the cross-directional length sum of second diversion section 23 and the 3rd diversion section is L
2, and L
1: L
2=4:1.Flow deflector 2 materials adopt potter's clay to fire or plastic shaping, and surface irregularity is so that cause flow turbulence.
As shown in Figure 1; Preceding landing edge 21 overlap joints of chopped-off head flow deflector 2 are at the water-in 11 of reoxygenation troughstand body 1; The preceding landing edge 21 of non-chopped-off head flow deflector 2 overlaps below the back landing edge 27 of previous stage flow deflector 2; The lap length of adjacent two flow deflectors 2 is 0.05m, and back landing edge 27 overlap joints of final stage flow deflector 2 are at the water outlet 12 of reoxygenation troughstand body 1.
It is following to fall the thin water layer artificial swamp reoxygenation groove natural reaeration process of the formula of jumping: sewage gets into reoxygenation troughstand body 1 through water-in 11, forms about 5 ~ 20mm thickness water layer, and thin water layer gets into chopped-off head flow deflector 2.Sewage descends along the smooth surface of first diversion section 22 of flow deflector 2, and effluent flow rate strengthens; Afterwards, sewage leans on inertia to get into next flow deflector 2 through second diversion section 23, the 3rd diversion section generation hydraulic jump of flow deflector 2, and a hydraulic jump takes place current in whole process, and has strengthened flow turbulence, increases current and air contact area greatly.A plurality of flow deflectors 2 are arranged in the reoxygenation troughstand body 1, and through hydraulic jump repeatedly, dissolved oxygen amount increases sewage gradually, reaches the reoxygenation requirement at last successively, the main part that gets into artificial swamps through water outlet 12.Falls the thin water layer artificial swamp reoxygenation groove of the formula of jumping through this is set at interval in the wetland, reoxygenation repeatedly helps to improve denitrification effect at interval, and at utmost reduces in the wetland organic residually, prolongs work-ing life of wetland.
The above-mentioned gradient of falling the reoxygenation troughstand body 1 of the thin water layer artificial swamp reoxygenation groove of the formula of jumping also can be 1.3% or 2%; The front end of flow deflector 2 first diversion sections 22 also can be 1.3% or 2% with respect to the gradient of the rear end of the 3rd diversion section, generally the gradient of reoxygenation troughstand body 1 is consistent with the front end of first diversion section 22 gradient with respect to the rear end of the 3rd diversion section.The lap length of adjacent two flow deflectors 2 can increase the length of overlap joint according to concrete needs.
Claims (10)
1. one kind is fallen the thin water layer artificial swamp reoxygenation groove of the formula of jumping; Comprise reoxygenation troughstand body (1), reoxygenation troughstand body has the gradient along its length, it is characterized in that: from the water-in to the water outlet, be provided with a plurality of flow deflectors (2) in the said reoxygenation troughstand body; Join end to end successively between the said flow deflector; The leading portion of said flow deflector is downward curved surface, and its back segment is curved surface upwards, and the leading portion of flow deflector is higher than back segment.
2. the thin water layer artificial swamp reoxygenation groove of the formula of jumping that falls according to claim 1 is characterized in that: overlap from beginning to end successively between the said flow deflector; The leading portion of said flow deflector (2) comprises preceding landing edge (21) and first diversion section (22); Its back segment comprises second diversion section (23), the 3rd diversion section and back landing edge (27); Said first diversion section is downward smooth surface, and second diversion section is smooth surface upwards, and the 3rd diversion section is made up of at least two folding faces that make progress; First diversion section and the 3rd diversion section are through the second diversion section smooth transition, and the front end of first diversion section is higher than the rear end of the 3rd diversion section.
3. the thin water layer artificial swamp reoxygenation groove of the formula of jumping that falls according to claim 2; It is characterized in that: preceding landing edge (21) overlap joint of chopped-off head flow deflector (2) is at the water-in (11) of reoxygenation troughstand body (1); The preceding landing edge overlap joint of non-chopped-off head flow deflector is in the below of the back landing edge (27) of previous stage flow deflector, and the back landing edge overlap joint of final stage flow deflector is at the water outlet (12) of reoxygenation troughstand body.
4. according to claim 2 or the 3 described thin water layer artificial swamp reoxygenation grooves of the formula of jumping that fall; It is characterized in that: said the 3rd diversion section is made up of the first folding face (24) that makes progress, the second folding face (25) and the 3rd folding face (26) from the front end to the rear end successively, the angle of the first folding face and horizontal plane
1Be acute angle, the angle of the second folding face and horizontal plane
2Be acute angle, the angle of the 3rd folding face and horizontal plane
3Be acute angle, and α
1＞α
2＞α
3
5. according to claim 2 or the 3 described thin water layer artificial swamp reoxygenation grooves of the formula of jumping that fall, it is characterized in that: the cross-directional length of said first diversion section (22) is L
1, the cross-directional length sum of second diversion section (23) and the 3rd diversion section is L
2, and L
1＞L
2
6. the thin water layer artificial swamp reoxygenation groove of the formula of jumping that falls according to claim 5, it is characterized in that: the cross-directional length of said first diversion section (22) is L
1, the cross-directional length sum of second diversion section (23) and the 3rd diversion section is L
2, and L
1: L
2=4:1.
7. according to claim 2 or the 3 described thin water layer artificial swamp reoxygenation grooves of the formula of jumping that fall, it is characterized in that: the front end of first diversion section (22) of said flow deflector (2) is 0.7%～2% with respect to the gradient of the rear end of the 3rd diversion section.
8. according to claim 2 or the 3 described thin water layer artificial swamp reoxygenation grooves of the formula of jumping that fall, it is characterized in that: said reoxygenation troughstand body (1) gradient along its length is 0.7%～2%.
9. according to claim 2 or the 3 described thin water layer artificial swamp reoxygenation grooves of the formula of jumping that fall, it is characterized in that: said flow deflector (2) is wide with reoxygenation troughstand body (1), and the lap length of adjacent two flow deflectors (2) is at least 0.05m.
10. according to claim 2 or the 3 described thin water layer artificial swamp reoxygenation grooves of the formula of jumping that fall, it is characterized in that: said reoxygenation troughstand body (1) is a plain concrete, and said flow deflector (2) adopts potter's clay to fire or plastic shaping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100480387A CN102583760B (en) | 2012-02-29 | 2012-02-29 | Drop-jump type thin-water layer constructed wetland reaeration groove |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100480387A CN102583760B (en) | 2012-02-29 | 2012-02-29 | Drop-jump type thin-water layer constructed wetland reaeration groove |
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| Publication Number | Publication Date |
|---|---|
| CN102583760A true CN102583760A (en) | 2012-07-18 |
| CN102583760B CN102583760B (en) | 2013-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100480387A Expired - Fee Related CN102583760B (en) | 2012-02-29 | 2012-02-29 | Drop-jump type thin-water layer constructed wetland reaeration groove |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105399203A (en) * | 2015-11-02 | 2016-03-16 | 重庆大学 | Lateral subsurface flow wetland treatment device and treatment method capable of realizing ANAMMOX denitrification |
| CN108163984A (en) * | 2018-02-05 | 2018-06-15 | 孟祥林 | One kind exempts from the ornamental pond of nursing cycle |
| CN110921985A (en) * | 2019-12-05 | 2020-03-27 | 湖南祥柏生态环保科技有限公司 | Sewage treatment device and process for grease extraction workshop of dead animal carcasses |
| CN114249425A (en) * | 2021-12-28 | 2022-03-29 | 刘亮 | Constructed wetland denitrification sewage treatment device and sewage treatment method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6064692A (en) * | 1983-09-16 | 1985-04-13 | Mitsubishi Plastics Ind Ltd | Purifying treatment of waste water |
| CN1233595A (en) * | 1999-04-11 | 1999-11-03 | 刘端华 | Aeration tank for biological wastewater treatment |
| CN101643278A (en) * | 2009-08-24 | 2010-02-10 | 重庆大学 | Subsurface flow constructed wetland sewage treatment system by drop water aeration oxygenation |
| CN201901616U (en) * | 2010-08-06 | 2011-07-20 | 河海大学 | Oxygen-enriching device for polluted water body of composite inserting plates on overflow dam surface |
| CN202449919U (en) * | 2012-02-29 | 2012-09-26 | 重庆大学 | Fall-jump type thin water layer artificial wetland reoxygenation tank |
-
2012
- 2012-02-29 CN CN2012100480387A patent/CN102583760B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6064692A (en) * | 1983-09-16 | 1985-04-13 | Mitsubishi Plastics Ind Ltd | Purifying treatment of waste water |
| CN1233595A (en) * | 1999-04-11 | 1999-11-03 | 刘端华 | Aeration tank for biological wastewater treatment |
| CN101643278A (en) * | 2009-08-24 | 2010-02-10 | 重庆大学 | Subsurface flow constructed wetland sewage treatment system by drop water aeration oxygenation |
| CN201901616U (en) * | 2010-08-06 | 2011-07-20 | 河海大学 | Oxygen-enriching device for polluted water body of composite inserting plates on overflow dam surface |
| CN202449919U (en) * | 2012-02-29 | 2012-09-26 | 重庆大学 | Fall-jump type thin water layer artificial wetland reoxygenation tank |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105399203A (en) * | 2015-11-02 | 2016-03-16 | 重庆大学 | Lateral subsurface flow wetland treatment device and treatment method capable of realizing ANAMMOX denitrification |
| CN108163984A (en) * | 2018-02-05 | 2018-06-15 | 孟祥林 | One kind exempts from the ornamental pond of nursing cycle |
| CN110921985A (en) * | 2019-12-05 | 2020-03-27 | 湖南祥柏生态环保科技有限公司 | Sewage treatment device and process for grease extraction workshop of dead animal carcasses |
| CN114249425A (en) * | 2021-12-28 | 2022-03-29 | 刘亮 | Constructed wetland denitrification sewage treatment device and sewage treatment method |
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|---|---|
| CN102583760B (en) | 2013-04-17 |
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Granted publication date: 20130417 Termination date: 20170229 |