CN101792215B - Multi-level two-layer returning water-spreading drop oxygenating method and device - Google Patents
Multi-level two-layer returning water-spreading drop oxygenating method and device Download PDFInfo
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- CN101792215B CN101792215B CN200910244241XA CN200910244241A CN101792215B CN 101792215 B CN101792215 B CN 101792215B CN 200910244241X A CN200910244241X A CN 200910244241XA CN 200910244241 A CN200910244241 A CN 200910244241A CN 101792215 B CN101792215 B CN 101792215B
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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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Abstract
The invention discloses a multi-level two-layer returning overflowing drop oxygenating method and device. The method comprises the following steps: fluid overflows from the upper overflowing area of an inclined drop unit to the inclined upper end, returns, overflows to the inclined lower end along the lower bottom surface of the drop unit and falls to the next level of drop unit. The device comprises at least two levels of drop units, wherein each level of drop unit comprises a drop pipe, a drop pipe baffle, an overflow plate, a drop supporting pipe, a drop supporting pipe baffle, a connection articulated rod and the like; and the multi-level drop units are in stair-like distribution and are arranged slantwise, the drop pipe inclines and the upper overflowing area is formed in the drop pipe; and fluid flows through the upper overflowing area to complete upper overflowing, returns at the inclined upper end of the drop pipe, moves along the lower bottom surface of the drop pipe or the upper bottom surface of the drop supporting pipe to complete lower overflowing and falls to the next level of drop unit from the inclined upper end. The device of the invention has the advantages that oxygenating can be performed efficiently, no energy is consumed, the device can not be blocked, the maintenance is convenient and the like, and the device is applicable to the wastewater treatment process in areas with undulating terrain.
Description
Technical field
The present invention relates to technical field of sewage, more specifically must say, relate to a kind of multi-level two-layer returning water-spreading drop oxygenating method and device thereof.
Background technology
In sewage disposal process, oxygenation is one of important link.The method of oxygenation comprises mechanical aeration and drop oxygenation etc. in the sewage.Mechanical aerator is generally used for the sewage treatment plants such as cities and towns, generally needs power-equipment, and power consumption is large, and operational management requires high, causes the sewage disposal operating cost high.Process for the rural area decentralized type sewage, adopt drop water aeration can simplify the operation, reduce operation energy consumption and processing cost.But existing utilization drop is carried out in the case of oxygenation, and directly drop oxygenation mode effect is usually not good, and the physical features drop is required high; Carry out drop oxygenation after by modes such as perforation current being disperseed and then have easy blockage problem; Setting up splash board makes water droplet become scattered about in the air mode of strengthening oxygenation to have the sewage problems such as easily distributing strong odor of splashing everywhere.
Summary of the invention
One of purpose of the present invention provides a kind of multi-level two-layer returning water-spreading drop oxygenating method of strengthening the drop oxygenation effect, reducing the sewage disposal energy consumption, the method can overcome the problem that existing drop facility faces, reasonably drainage and shunting avoids stopping up and reducing stink.
Another object of the present invention provides a kind of device of multi-level two-layer returning water-spreading drop oxygenating.
For solving the problems of the technologies described above, the present invention uses fluid mechanics principle, has designed a kind of multi-level two-layer returning water-spreading drop oxygenating method and device thereof, has higher oxygen-transfer efficiency, has overcome simultaneously the problems such as obstruction and stink loss.A kind of multi-level two-layer returning water-spreading drop oxygenating device, formed by the drop of two-stage at least unit, drops at different levels unit is going up or down stairway and distributes, it is characterized in that: drops at different levels unit is inclined to set, its top is provided with cross flow district, upper strata, fluid is baffling on the cross flow district cross flow of described upper strata is tilted to the unit that drops, and then along the bottom surface cross flow of described drop unit to its lower end that tilts, falls into thus next stage drop unit.
Described drop unit comprises the dropping tube of relative level face tilt setting and is fixed in the dropping tube baffle plate of dropping tube inclination lower end that described dropping tube and dropping tube baffle plate surround cross flow district, upper strata.
Described a kind of multi-level two-layer returning water-spreading drop oxygenating method, on fluid tilts to it along the upper strata cross flow district cross flow of the drop unit that tilts, pasting the drop trustship upper bottom surface cross flow of the dropping tube bottom surface of the bottom, unit of dropping or the bottom, unit of dropping behind the baffling to its lower end that tilts, fluid falls into next stage drop unit by the inclination lower end of described drop unit.Being fluid finishes the upper strata cross flow in the cross flow district, upper strata of the drop unit that tilts, after turning back at the bottom of the dropping tube pipe outer wall finish lower floor's cross flow, then fall into next stage drop unit, so circuitous cross flow, multistage drop is until fall at last sewage treatment structure.On the upper strata cross flow refers to that fluid tilts to dropping tube from dropping tube latter end drop chamber cross flow; Lower floor's cross flow refers to that fluid is pasting at the bottom of the dropping tube pipe outer wall cross flow to the dropping tube lower end that tilts from the dropping tube upper end that tilts; The circuitous grain direction of upper strata cross flow that refers to is changed about 180 ° on dropping tube tilts, lower floor's cross flow is carried out in the opposite direction.
Described dropping tube below is provided with the drop trustship of inclination, and the incline direction of described drop trustship is consistent with the incline direction of described dropping tube.
Be fixed with overflow plate in the described dropping tube, described overflow plate upper end is provided with the overflow sawtooth, and described overflow plate is distinguished the upper strata cross flow and is slit into drop chamber and cross flow chamber, and described drop chamber places the section of having a down dip of dropping tube.
Described drop trustship is set in parallel in the dropping tube below by connecting bar alive, its spacing is 0.02～0.1m, on tilting, described drop trustship (6) stretches out dropping tube (1) inclination upper end, described drop trustship (6) inclination lower end is stretched out in described dropping tube (1) inclination lower end, be described drop trustship with respect to the super direction that it tilts the upper end of the dropping tube certain distance that staggers, this distance is preferably 0.05～0.1m.
Described dropping tube cross section is arcuation, and its bottom surface is provided with along the waveform split channel of dropping tube inclination upper end to the lower end that tilts.
Described drop trustship cross section is arcuation, and its upper bottom surface is provided with along the waveform split channel of drop trustship inclination upper end to the lower end that tilts.
Described split channel is provided with the multiple tracks groove, be arranged in parallel between each groove of split channel and each groove minimum point flushes.
The angle of inclination of described drop unit is 5 °～30 °, and the vertical range between described adjacent drop unit is at least 0.05m, preferred 0.1～0.5m, and the front and back horizontal range is at least 0.05m, preferred 0.05m～0.2m.
Beneficial effect:
The present invention's oxidation effect that relatively directly drop oxygenation can not only Effective Raise unit's drop, can also effectively prevent from stopping up and slowing down the volatilization of stink substance in the sewage, have efficient oxygenation, Non-energy-consumption, do not stop up, the advantages such as stink is few, easy maintenance, be applicable to have the sewage treatment process in the area of physical features drop.Specific as follows:
A. the inclination dropping tube among the present invention has the function of drainage and efficient oxygenation.The drop unit is obliquely installed to make and forms cross flow district, upper strata in the dropping tube, on fluid tilts to it along the upper strata cross flow district cross flow of upper level dropping tube, behind this baffling along the cross flow of dropping tube bottom surface, the drop that drops to the next stage dropping tube from dropping tube inclination lower end is indoor, fluid has increased the contact area of sewage and air by the circuitous cross flow of bilayer, prolong the time of contact of sewage and air, thereby strengthened the effect of drop oxygenation.
B. the split channel among the present invention has shunting and anti-blocking function.The dropping tube bottom surface is provided with the parallel split channel of multiple tracks, sewage in dropping tube upper strata cross flow district's cross flow to the inclination of split channel upper end, be split into several strands of weeps, this shunting mode can increase the contact area of sewage and air, strengthen the drop oxygenation effect, the blockage problem that other shunting measure such as can also effectively avoid boring a hole easily causes.
C. the drop trustship among the present invention has the function of rectification.Come off when preventing fluid along the cross flow of dropping tube bottom surface split channel, be provided with the drop trustship of same tilt angle in the dropping tube bottom, be provided with the parallel concavo-convex split channel of identical multiple tracks at drop trustship upper bottom surface, the sewage that is scattered when the drop trustship can effectively be collected in the beneath surperficial cross flow of dropping tube pipe, make its slowly cross flow of groove of split channel in the drop trustship, play and collect sewage and make it continue the rectified action of cross flow.
D. the overflow plate among the present invention has the function of current stabilization.The zigzag overflow plate is vertically mounted in the dropping tube, and top edge is zigzag; Current drop in the drop chamber can cause disturbance, can affect split channel to the even shunting action of current, and the iris action of overflow plate can effectively be eliminated most of disturbance, thereby pasting to the shallow bid current uniform and stable after being conducive to shunt the split channel cross flow of dropping tube bottom surface, reducing sewage and be scattered.
If e. the device among the present invention is installed on sunny place, in the drop chamber, can sow photosynthetic algae such as euglena viridis etc., then can produce oxygen by algae photosynthesis and further improve oxidation effect.
F. in addition, because the oxygenation process of whole sewage is mainly undertaken by upper strata cross flow and lower floor's cross flow, this process is slow and gentle, and with respect to the mode of other spray oxygenations or splash board oxygenation, the present invention can slow down the volatilization of stink substance in the sewage to a certain extent.
Description of drawings
The invention will be further described below in conjunction with the drawings and specific embodiments:
Fig. 1 is structural representation of the present invention.
Fig. 2 is the M-M view of Fig. 1.
Among the figure:
A1, A2 ... An---drop upper strata cross flow district, unit 1---dropping tube 2---
21---drop chamber 22---cross flow chamber 3---dropping tube baffle plates
4---overflow plate 5,5 '---split channel 6---drop trustships
7---drop trustship baffle plate 8---connecting the bar 9 of living---overflow sawtooth.
The specific embodiment
Referring to Fig. 1 and Fig. 2.
A kind of multi-level two-layer returning water-spreading drop oxygenating method, on fluid tilts to it along cross flow district, upper strata 2 cross flows of the drop unit that tilts, along the bottom surface cross flow of dropping tube 1 to its lower end that tilts, fluid falls into next stage drop unit by the inclination lower end of drop unit behind the baffling.Be that fluid is finished the upper strata cross flow in the cross flow district, upper strata 2 of the drop unit that tilts, finish lower floor's cross flow at dropping tube 1 pipe end outer wall after turning back, then fall into the drop chamber 21 of next stage drop unit, so circuitous cross flow, multistage drop is until fall at last sewage treatment structure.
From Fig. 1 and Fig. 2, can find out, the present invention is comprised of a plurality of drop unit that are obliquely installed, each drops and is the ladder distribution between the unit, and in the dropping tube 1 of each drop unit, be provided with cross flow district, upper strata 2, fluid is on upper strata cross flow district 2 cross flows to dropping tube 1 tilts, behind baffling, along dropping tube 1 bottom surface cross flow to its lower end that tilts, then fall into next stage drop unit.The feature of drop unit is as follows: dropping tube 1 is obliquely installed, dropping tube baffle plate 3 is fixed in dropping tube 1 inclination lower end, dropping tube 1 takes the shape of the letter U or other shape, by dropping tube baffle plate 3 sealing of one end is formed cross flow district, upper strata 2, come off when preventing that sewage is descending along dropping tube 1 bottom surface, parallel drop trustship 6 preferably is set below dropping tube 1, drop trustship 6 is identical with the pipe Bottom Shape of dropping tube 1, but Length Ratio dropping tube 1 is a little longer, and arc length is short than dropping tube 1 arc length.Fluid is 2 interior flowing in upper strata cross flow district, when arriving dropping tube 1 inclination upper end, along dropping tube 1 bottom surface cross flow to dropping tube 1 inclination lower end, then fall in the cross flow district, upper strata 2 of next stage drop unit, by that analogy after fluid is spent baffling 180.Drop trustship 6 is tilted the upper end with drop trustship baffle plate 7, its inclination lower ending opening, drop trustship 61 surpasses its direction that tilts upper end certain distance that staggers with respect to dropping tube, the trustship 6 of can avoiding like this dropping hinders cross flow to the sewage whereabouts of dropping tube 1 inclination lower end, and drop trustship 6 connects the bar 8 of living by four and links to each other with dropping tube 1.The angle of inclination of each unit that drops is 5 °～30 °, and the vertical range between adjacent drop unit is 0.1～0.5m, and horizontal range is 0.05～0.2m before and after it.
Also can be found out by Fig. 2, along the sewage grain direction, the upper bottom surface of dropping tube 1 bottom surface and drop trustship 6 be distributed with 1～6 split channel 5,5 of cross section undulate ', split channel 5,5 ' each smooth groove be parallel to each other and minimum point flushes.Split channel 5,5 ' arise from dropping tube 1 or drop trustship 6 inclination upper ends ends at dropping tube 1 or drop trustship 6 inclination lower ends.Cross flow to the sewage of split channel 5,5 ' inclination upper end is divided into several strands of weeps at this, has increased the contact area with air, has prolonged the time of contact with air, has strengthened the effect of drop oxygenation.In addition, the split channel 5 of drop trustship 6 and its upper bottom surface setting ' can effectively be collected in the sewage that is scattered when dropping tube 1 is managed beneath surperficial cross flow makes its split channel 5 along drop trustship 6 ' slowly cross flow, finishes lower floor's cross flow.
In addition, be provided with overflow plate 4 in dropping tube 1, overflow plate 4 upper ends are provided with overflow sawtooth 9, and overflow plate 4 is divided into drop chamber 21 and cross flow chamber 22 with upper strata cross flow district 2, and the chamber 21 of wherein dropping is surrounded by overflow plate 4, dropping tube baffle plate 3 and dropping tube 1 two side.Sewage is dropped in the drop chamber 21 of next stage dropping tube 1 by upper level drop unit, cross overflow plate 4, turn back through cross flow chamber 22 cross flows to the inclination upper end of the split channel 5 of dropping tube 1, then pasting split channel 5 cross flows of dropping tube 1 bottom surface, or be scattering into interior the flowing along its groove of drop trustship 6 and finish lower floor's cross flow.Increased the contact area of sewage and air by the circuitous cross flow of bilayer, prolonged the time of contact of sewage and air, thereby strengthened the effect of drop oxygenation.
Because the setting of overflow plate 4, current have certain time of staying in drop chamber 21, if this device is installed on sunny place, can sow photosynthetic algae such as euglena viridis etc. in drop chamber 21, then can produce oxygen by algae photosynthesis and further improve oxidation effect.
From whole drop process, sewage at first flows into uppermost drop unit A1, then drops down successively to next stage drop unit A2, until nethermost drop unit An, n is 1～20 integer, finally drops in the sewage treatment structure.Current through multistage fall to have reduced fall speed, prolonged and fallen distance, increased the time of contact of sewage and air, thereby the oxidation effect of energy Effective Raise unit drop.
The present invention can not only Effective Raise unit's drop oxidation effect, it is drop oxygenation relatively directly, every meter oxidation effect can improve 2～6mg/L DO, can also effectively prevent from stopping up and slowing down the volatilization of stink substance in the sewage, have efficient oxygenation, Non-energy-consumption, do not stop up, the advantage such as easy maintenance, be specially adapted to have the sewage treatment process in the area of physical features drop.
Apply the present invention to the oxygenation process of sewage treatment process.Each dropping tube 1 length is 0.2m, and the degree of depth is 0.1m, and width (opening span) is 0.2m, and overflow plate 4 to dropping tube baffle plate 3 bottom lines distance is 0.08m; Drop trustship 6 shapes are identical with dropping tube 1, and length is 0.21m, and the degree of depth is 0.05m, and width (opening span) is 0.16m, and drop trustship water fender 7 highly is 0.05m, and drop trustship 6 is 0.03m apart from the spacing of dropping tube 1.The setting angle of every grade of drop unit relative level face is 14 °, next stage drop cellular installation is below upper level drop unit is oblique, vertical range is 0.3m between any 2 grades of drop unit, horizontal range is 0.05m, the drop total height is 0.9m, take oilysewage surface as reference, it highly is the position of 0.3m, 0.6m and 0.9m that 3 grades of drop unit are installed on respectively.
Test water is anaerobic effluent, 15 ℃ of water temperatures, DO＜0.5mg/L, flow is 6L/h, anaerobic effluent flows into the 1st grade of drop unit A1, turns back on dropping tube 1 tilts through overflow plate 4 cross flows, is then pasting split channel 5 cross flows at the 1 pipe end of dropping tube to its lower end that tilts, drop to next stage drop unit A2, drop is the same with flow process again.Measurement result shows, when always drop highly is 0.9m, can increase to 8.0mg/L by the water body DO after this device drop, than the about 4mg/L of oxygenation capacity raising of direct drop (flow is highly identical with total drop).
The above only is one embodiment of the present of invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. multi-level two-layer returning water-spreading drop oxygenating device, formed by the drop of two-stage at least unit, it is characterized in that: drops at different levels unit is going up or down stairway and distributes, and be inclined to set, described drop unit comprises the dropping tube (1) that the relative level face tilt arranges and is fixed in the dropping tube baffle plate (3) of dropping tube (1) inclination lower end, described dropping tube (1) surrounds cross flow district, upper strata (2) with dropping tube baffle plate (3), fluid is baffling on the cross flow district cross flow of described upper strata is tilted to the unit that drops, then along the bottom surface cross flow of described drop unit to its lower end that tilts, fall into thus next stage drop unit.
2. described multi-level two-layer returning water-spreading drop oxygenating device according to claim 1, it is characterized in that: described dropping tube below is provided with the drop trustship (6) of inclination, and the incline direction of described drop trustship (6) is consistent with the incline direction of described dropping tube (1).
3. described multi-level two-layer returning water-spreading drop oxygenating device according to claim 2, it is characterized in that: be fixed with overflow plate (4) in the described dropping tube (1), described overflow plate (4) upper end is provided with overflow sawtooth (9), described overflow plate (4) is divided into drop chamber (21) and cross flow chamber (22) with upper strata cross flow district (2), and described drop chamber (21) places the section of having a down dip of dropping tube (1).
4. multi-level two-layer returning water-spreading drop oxygenating device according to claim 3, it is characterized in that: described drop trustship (6) is set in parallel in dropping tube (1) below by connecting the bar (8) of living, its spacing is 0.02～0.1m, stretch out dropping tube (1) inclination upper end on described drop trustship (6) is tilted, drop trustship (6) inclination lower end is stretched out in described dropping tube (1) inclination lower end.
5. multi-level two-layer returning water-spreading drop oxygenating device according to claim 4, it is characterized in that: described dropping tube (1) cross section is arcuation, and its bottom surface is provided with along the tilt waveform split channel (5) of upper end to the lower end that tilts of dropping tube (1).
6. multi-level two-layer returning water-spreading drop oxygenating device according to claim 5, it is characterized in that: described drop trustship (6) cross section is arcuation, and its upper bottom surface is provided with along the waveform split channel (5 ') of drop trustship (6) inclination upper end to the lower end that tilts.
7. multi-level two-layer returning water-spreading drop oxygenating device according to claim 6, it is characterized in that: described split channel (5,5 ') is provided with the multiple tracks groove, be arranged in parallel between each groove of split channel (5,5 ') and each groove minimum point flushes.
8. multi-level two-layer returning water-spreading drop oxygenating device according to claim 7, it is characterized in that: the angle of inclination of described drop unit is 5 °～30 °, and the vertical range between described adjacent drop unit is at least 0.05m, and the front and back horizontal range is 0.05m.
9. one kind is adopted the as claimed in claim 1 drop oxygenation method of multi-level two-layer returning water-spreading drop oxygenating device, it is characterized in that: on fluid tilts to it along the upper strata cross flow district cross flow of the drop unit that tilts, pasting the bottom surface cross flow of drop unit behind the baffling to its lower end that tilts, fluid falls into next stage drop unit by the inclination lower end of described drop unit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910244241XA CN101792215B (en) | 2009-12-30 | 2009-12-30 | Multi-level two-layer returning water-spreading drop oxygenating method and device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910244241XA CN101792215B (en) | 2009-12-30 | 2009-12-30 | Multi-level two-layer returning water-spreading drop oxygenating method and device |
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| Publication Number | Publication Date |
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| CN101792215A CN101792215A (en) | 2010-08-04 |
| CN101792215B true CN101792215B (en) | 2013-04-10 |
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| CN200910244241XA Expired - Fee Related CN101792215B (en) | 2009-12-30 | 2009-12-30 | Multi-level two-layer returning water-spreading drop oxygenating method and device |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102101716B (en) * | 2010-11-03 | 2013-03-20 | 雷青林 | Pyramidal oxidation treatment tank for multilayer thin sewage flow |
| CN103523940A (en) * | 2012-07-06 | 2014-01-22 | 成都市思博睿科技有限公司 | Controllable powerless aeration device |
| CN102818883A (en) * | 2012-07-25 | 2012-12-12 | 华东师范大学 | Experimental apparatus for three-stage water-dropping aeration purification |
| CN104176811A (en) * | 2014-08-15 | 2014-12-03 | 哈尔滨宏万智科技开发有限公司 | Interval-aeration oxidizer |
| CN108249573B (en) * | 2018-04-17 | 2024-04-30 | 青岛沃安环境科技有限公司 | Biological purification tank for sewage treatment |
| CN108439731A (en) * | 2018-06-06 | 2018-08-24 | 北京建筑大学 | A kind of integrated form integrated rural sewage-treatment plant and method |
| CN109987790A (en) * | 2019-03-29 | 2019-07-09 | 河海大学 | A kind of Tiny ecosystem filter bed |
| CN112979048A (en) * | 2019-12-12 | 2021-06-18 | 芜湖沃泰环保科技有限公司 | Nitrogen phosphorus ecological adsorption treatment system |
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| CN2659881Y (en) * | 2003-09-11 | 2004-12-01 | 汪高社 | Self-aerating biological oxidizing ditch |
| CN2739174Y (en) * | 2004-11-04 | 2005-11-09 | 朱向宏 | Water fall aeration apparatus |
| CN101468846A (en) * | 2007-12-25 | 2009-07-01 | 中国科学院生态环境研究中心 | Sectional inlet and drop oxygenation and contact oxidation integrated sewage treating apparatus and method |
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- 2009-12-30 CN CN200910244241XA patent/CN101792215B/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2659881Y (en) * | 2003-09-11 | 2004-12-01 | 汪高社 | Self-aerating biological oxidizing ditch |
| CN2739174Y (en) * | 2004-11-04 | 2005-11-09 | 朱向宏 | Water fall aeration apparatus |
| CN101468846A (en) * | 2007-12-25 | 2009-07-01 | 中国科学院生态环境研究中心 | Sectional inlet and drop oxygenation and contact oxidation integrated sewage treating apparatus and method |
Non-Patent Citations (1)
| Title |
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| JP平9-314192A 1997.12.09 |
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