CN101913715A - Device and method for enriching oxygen of polluted water by combining spiles on overflow dam face - Google Patents
Device and method for enriching oxygen of polluted water by combining spiles on overflow dam face Download PDFInfo
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- CN101913715A CN101913715A CN2010102484222A CN201010248422A CN101913715A CN 101913715 A CN101913715 A CN 101913715A CN 2010102484222 A CN2010102484222 A CN 2010102484222A CN 201010248422 A CN201010248422 A CN 201010248422A CN 101913715 A CN101913715 A CN 101913715A
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Abstract
The invention relates to a device and a method for enriching oxygen of polluted water by combining spiles on an overflow dam face, which belong to the field of environmental protection. On the overflow dam face of an overflow dam, parallel or cross spiles vertical to the dam face are arranged along the water flow direction at same width intervals. The transverse distance between the adjacent spiles is as same as the width of each spile, is determined according to the actual river width and does not exceed 0.24 to 0.8 meter generally. The arrangement principle of the spiles along the water flow direction is that: the dam face longitudinal curve distance between the upper and lower layers of spiles is 1.5 times the projected depth of the dam face spiles. The ratio of width to thickness of each spile is 10:1. The overflow dam provided with the spiles is vertical to the riverway water flow direction, when water flows downwards through the dam face, the spiles disturbs the water flow of the overflow dam to make the water generate turbulent fluctuation intensively even broken or separated, so that the air entraining capacity of the water on the dam face is greatly improved, the water-air interface area of the water is increased, the dissolved oxygen concentration of the downstream river is effectively increased, and the long-term uninterrupted automatic oxygen enrichment of the polluted water in the downstream riverway is realized.
Description
Technical field
The present invention relates to field of environment protection, specifically a kind of device and the oxygenation method thereof of repairing the river course polluted water body by the overflow dam face overflow oxygenation of particular design in the environmental engineering subject.
Background technology
In recent years, along with the Chinese society rapid development of economy, quickening of urbanization process, mankind's activity is increasingly serious to the pollution situation of urban river, urban river water quality is degradating trend generally, part section even occurred seasonal and the black smelly phenomenon of property water body throughout the year, dissolved oxygen in the water body (DO) is very low, has greatly influenced peripheral resident's quality of life and urban look.
Dissolved oxygen content is an important indicator weighing water quality condition in the river, the height of dissolved oxygen content directly affects hydrobiological growth, and in the river organic pollutant defeated move, diffusion and degradation capability, and then have influence on the self-purification process of whole water body, the dissolved oxygen content that improves river water body can strengthen aerobic bacteria population activity, help the aquatic animals and plants growth, black smelly for eliminating river water body, passivation riverbed bed mud, slow down pollutants in sediments release and have good effect, be to strengthen water body self-purification ability, improve the effective measure of water quality of river.
Generally adopt the mode of the reoxygenation of calming the anger to improve the urban river dissolved oxygen content at present both at home and abroad, its technique means is various, mainly can reduce following several: (1) pure oxygen bleeding technique.At present Britain Thames, German Lay are used this technology because of the Suzhou River in river and China Shanghai City and are given river course oxygenation, and this method oxygen-transfer efficiency is higher, but need purchase liquid oxygen or special oxygen generating plant system oxygen is installed to special system oxygen factory, cause cost higher; (2) gas blower-micropore gas distribution pipe aeration process.River course, the Australia pool has adopted this aerating system on the Xuhui District of Shanghai, oxygenation effect is good, but its gas distribution pipe is placed in the river bed, the installation work amount is big and be difficult to safeguard, simultaneously also may produce certain influence to shipping, in addition in order to reduce the influence of blower noise, the Ventilator Room operated by rotary motion is underground, thereby increased investment cost.(3) adopt rotating plasma negative pressure oxygen uptake and go into the korneforos with water-jet.This bleeding technique was once used in the Han River of Seoul, South Korea and section, Physical Culture Institute, Qinghe, China Pekinese, effect is comparatively remarkable, but exist paddle easily by the water float thing twine to stop up, stir bed mud easily when in the less river of the depth of water, using, the deep water oxygenation capacity is relatively poor, influences problems such as shipping.(4) technology of jet oxygenation under water.This technical equipment is installed simple, be easy to safeguard, but oxygen-transfer efficiency is relatively low, and also is subjected to certain restriction on the suitable depth of water.In addition, for the reoxygenation technology self of calming the anger, need supporting powerful Special Equipment to come to river course external energy oxygen supply, on the long-time running angle, extra energy consumption and working cost are higher, also can produce certain influence to environment, are restricting the popularization of this type of technology.
China's urban river flow is generally less, and segmentation construction along the river has dam, weir to wait water buildings usually, retains current, improves the riverbed water level, satisfies purposes such as tourism, navigation.When streamflow overflow the dam, when water buildings was waited on the weir, will entrainment blending with air, dissolved oxygen content is increased, this is confirmed by engineering practice.Add rough design and transformation if can carry out plate to city river overflow dam face, to make full use of the mechanical energy of streamflow, when making current overflow the dam facing of compound plate, carry more air secretly and enter water body, thereby can improve the dissolved oxygen content of dam water body effectively, will be a kind of energy-conservation, green river course reoxygenation method.In addition, when the current plate dam facing that overflow, the sparkling and crystal-clear jump of spray is imbued with moving rhythm, also can be the landscape that urban construction increases one grace.Yet, the design of this respect and the still rarely seen so far report of utilization.
Summary of the invention
The object of the present invention is to provide the polluted water body oxygen-increasing device and the oxygenation method thereof of compound plate on a kind of overflow dam face of particular design.Specifically on overfall dike overflow dam face, lay plate perpendicular to dam facing, by changing the reoxygenation ability that the dam flow-shape strengthens the dam facing water body, need not to install in addition energy supply, oxygenation facility like this, can reach, improve the purpose of water quality of river to the river course reoxygenation.
The polluted water body oxygen-increasing device of compound plate on a kind of overflow dam face, this device is on the overflow dam face 2 of overfall dike 1, every identical width, along crossing the dam water (flow) direction with the plate 3 of equidistant laying perpendicular to dam facing, the dam facing protuberance of its drop keel 3 is square, 3 transverse distances of adjacent insert plates are identical with the plate width, are generally 0.24m to 0.8m; The vertical curve distance of dam facing that upper and lower each layer plate is 3 is 1.5 times of plate 3 width; The flakiness ratio of plate 3 is 10: 1.
The arranged mode of above-mentioned plate 3 upper and lower each layers is run-in index arranged or interlaced formula arranged.
Above-mentioned plate 3 usefulness concrete prefabricated boards or PVC plate are made.
Above-mentioned oxygen-increasing device is to the oxygenation way of polluted water body, and its method steps is as follows:
1, plate 3 is laid in equally spacedly on the overflow dam face 2 of overfall dike 1, the dam facing protuberance of plate 3 is square, perpendicular with overflow dam face 2, transverse distance between the plate 3 is identical with the plate width, the vertical curve distance of dam facing of upper and lower layer plate is 1.5 times of plate width, the width ratio of plate 3 is 10: 1, and 3 upper and lower layers of arranged mode of plate are that run-in index is arranged or interlaced formula is arranged:
2, when letting out under the river overflow overflow dam face, cross the disturbance that the dam current are subjected to each layer plate 3, make the violent turbulent fluctuation of water body, even broken, separation takes place, thereby improved the aeration ability of dam facing water body, increase aqueous vapor interfacial area in the water body;
3, cross the continual disturbance that the dam current are subjected to each layer plate 3, enter water body, improved the dissolved oxygen content of dam current, realize the automatic aeration of the long-term continual polluted water body of downstream river course thereby carry more air secretly.
Apparatus of the present invention are arranged perpendicular to the streamflow direction, play on the one hand and retain current, improve the effect of riverbed water level, on the other hand when letting out under the current process dam facing, the dam current are crossed in the plate disturbance, make the violent turbulent fluctuation of water body even broken, separation takes place, thereby improved the aeration ability of dam facing water body, increase the aqueous vapor interfacial area in the water body, effectively improve the dissolved oxygen concentration in river, downstream.
Advantage of the present invention and positively effect are:
1. this oxygen-increasing device is simple in structure, good looking appearance, be easy to safeguard, convenient management, need not to install in addition the equipment to river course energy supply and oxygenation, can save a large amount of energy, investment and running cost are cheap relatively, be applicable to the oxygenation in the middle-size and small-size river of getting dirty, China city, have good future in engineering applications.
2. the oxygenation method of this device can make full use of the mechanical energy that river itself is contained, when making current overflow the overflow dam face of compound plate, be subjected to the plate disturbance and violent turbulent fluctuation take place even fragmentation, separation, thereby carry more air secretly and enter water body, the dissolved oxygen content of dam current can be significantly improved, and long-term continual river course automatic aeration can be realized.
Description of drawings
Fig. 1 is the synoptic diagram of the polluted water body oxygen-increasing device of compound plate on a kind of overflow dam face:
Wherein (a) is side-view of the present invention, (b) arranges synoptic diagram for the run-in index plate, (c) arranges synoptic diagram for the staggered form plate.
Fig. 2 is multi-form overfall dike reoxygenation ability simultaneous test layout drawing.
Fig. 3 is test dam facing coordinate dimension figure:
Wherein (a) is smooth dam facing, (b) is compound plate dam facing.
Reference numeral: 1-overfall dike, 2-overflow dam face, 3-plate.
Embodiment
Now in conjunction with the accompanying drawings embodiment of the present invention is described further.
Embodiment 1
The polluted water body oxygen-increasing device and the oxygenation method thereof of compound run-in index plate on a kind of overflow dam face.Embodiment is: in Fig. 1, plate 3 is installed on the overflow dam face 2 of overfall dike 1 by dam facing boring stickup means.Plate 3 is made by PVC sheet material, is of a size of 0.8m * 0.5m * 0.05m (long * wide * thick); The degree of depth that plate 3 inserts overflow dam face 2 is 0.3m, and the dam facing protuberance is of a size of 0.5m * 0.5m * 0.05m (long * wide * thick); Plate 3 is laid perpendicular to overflow dam face 2, wherein, lays 40 row plates along the overfall dike cross direction altogether with equally spaced form, and transverse distance is identical with the plate width between adjacent insert plates, is 0.5m; Lay 7 layers of plate along crossing the dam water (flow) direction altogether with the form of equidistantly arranging (run-in index) continuously, the vertical dam facing curve distance between upper and lower two-layer plate is 1.5 times of plate width, is 0.75m.
The overfall dike of compound plate is arranged perpendicular to the streamflow direction, before river flows to the dam, because the effect of retaining of overfall dike, flow profile is constantly raised, when letting out under current overflow dam facing, be subjected to the obstruct and the disturbance of dam facing plate, violent turbulent fluctuation even fragmentation, separation take place in water body, thereby have significantly improved the aeration ability of dam facing water body, strengthen the aqueous vapor interfacial area in the water body, strengthen the reoxygenation efficient of overfall dike overflow dam face, effectively improved the dissolved oxygen concentration in river, downstream.
The polluted water body oxygen-increasing device and the oxygenation method thereof of compound staggered form plate on a kind of overflow dam face.In the middle of embodiment, plate 3 is along crossing on the dam water (flow) direction, lays with the equidistant form of interlaced (staggered form), and all the other are with embodiment 1.
The overfall dike that we have designed three kinds of forms carries out reoxygenation ability contrast experiment, proposes experimental basis of the present invention:
1, smooth dam facing overfall dike
2, compound run-in index plate dam facing overfall dike
3, compound staggered form plate dam facing overfall dike
Multi-form overfall dike reoxygenation ability contrast experiment carries out indoor.Whole test equipment total length is 400.0cm, comprises water inlet system (water channel before the dam), test overflow dam face, and outlet system (tailwater channel), test is arranged and is seen Fig. 2.Test overflow dam face portion adopts synthetic glass to make, and rest part adopts the PVC board making.The overfall dike drop highly is 80.0cm, crossing the water width is 20.0cm, the coordinate dimension of smooth dam facing and run-in index, staggered form interposer type dam facing is seen Fig. 3, the yardstick of its drop keel dam facing protuberance is 2.0cm * 2.0cm * 0.2cm, the vertical curve distance of dam facing between upper and lower two-layer plate is 3.0cm, is 1.5 times of plate width.
Before the test water body dissolved oxygen concentration on the dam is maintained 2.0～3.0mg/l, fall and enter the tailwater channel water outlet from testing dam facing through current behind the water channel.Behind 1.0cm place and the dam 90.0cm place (among Fig. 2 before the dam in test
Mark) monitoring section is set respectively, the portable dissolved oxygen meter of HQ LDOTMHQ30d that adopts HACH company to produce is implemented synchronous measure to the dissolved oxygen content in the water body.
Adopted the oxygen deficit recovery rate r of dam current to characterize the reoxygenation ability of overflow dam face:
C in the formula
1Be dissolved oxygen concentration before the dam, C
2Be dissolved oxygen concentration behind the dam, Cs is the saturated dissolved oxygen concentration under the relevant temperature, and unit is mg/l.
On overfall dike, the real-time synchronous measure data statistic analysis of downstream water body dissolved oxygen concentration, draw smooth type under the different flow, run-in index interposer type and staggered form interposer type overflow dam face oxygen deficit recovery rate are as shown in table 1, comparing result shows, under laboratory condition, when water flow is consistent, run-in index and staggered form interposer type overflow dam face reoxygenation ability are apparently higher than smooth type overflow dam face, the oxygen deficit recovery rate of compound plate overflow dam face can reach 1.93～2.01 times of smooth dam facing, cross dam current dissolved oxygen content and can be promoted to 6.5mg/l above (the dissolved oxygen saturation concentration is between 10.41～10.61), can reach " water environment quality standard " (GB3838-2002) II class standard requirement.
The different overflow dam face of table 1 form oxygen deficit recovery rate
Claims (4)
1. the polluted water body oxygen-increasing device of compound plate on the overflow dam face, it is characterized in that this device is on the overflow dam face (2) of overfall dike (1), every identical width, along crossing the dam water (flow) direction with the plate (3) of equidistant laying perpendicular to dam facing, the dam facing protuberance of its drop keel (3) is square, transverse distance is identical with the plate width between adjacent insert plates (3), is generally 0.24m to 0.8m; The vertical curve distance of dam facing between upper and lower each layer plate (3) is 1.5 times of plate (3) width; The flakiness ratio of plate (3) is 10: 1.
2. oxygen-increasing device according to claim 1, the arranged mode that it is characterized in that upper and lower each layer of described plate (3) are run-in index arranged or interlaced formula arranged.
3. oxygen-increasing device according to claim 1 is characterized in that described plate (3) makes with concrete prefabricated board or PVC plate.
4. one kind with the oxygenation way of the described oxygen-increasing device of claim 1 to polluted water body, and its method steps is as follows:
(1), plate (3) is laid in equally spacedly on the overflow dam face (2) of overfall dike (1), the dam facing protuberance of plate (3) is square, perpendicular with overflow dam face (2), transverse distance between the plate (3) is identical with the plate width, the vertical curve distance of dam facing of upper and lower layer plate is 1.5 times of plate width, the flakiness ratio of plate (3) is 10: 1, and the upper and lower layer of plate (3) arranged mode is that run-in index is arranged or interlaced formula is arranged;
(2), when letting out under the river overflow overflow dam face, cross the disturbance that the dam current are subjected to each layer plate (3), make the violent turbulent fluctuation of water body, even take place broken, separate, thereby improved the aeration ability of dam facing water body, increase aqueous vapor interfacial area in the water body;
(3), the dam current are subjected to the continual disturbance of each layer plate (3) excessively, enter water body thereby carry more air secretly, improve the dissolved oxygen content of dam current, realize the automatic aeration of the long-term continual polluted water body of downstream river course.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102484222A CN101913715B (en) | 2010-08-06 | 2010-08-06 | Device and method for enriching oxygen of polluted water by combining spiles on overflow dam face |
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| CN2010102484222A CN101913715B (en) | 2010-08-06 | 2010-08-06 | Device and method for enriching oxygen of polluted water by combining spiles on overflow dam face |
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| CN101913715A true CN101913715A (en) | 2010-12-15 |
| CN101913715B CN101913715B (en) | 2012-02-22 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102505666A (en) * | 2011-12-22 | 2012-06-20 | 南京信息工程大学 | Hydraulic sluicing building capable of improving self-cleaning capacity of water body by river drop |
| CN109231513A (en) * | 2018-10-19 | 2019-01-18 | 四川安达尔环保工程有限公司 | A kind of endogenous pollution governing system |
| CN112875880A (en) * | 2021-01-20 | 2021-06-01 | 无锡金洁环保技术有限公司 | Aeration device based on Fibonacci number sequence arrangement and use method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101007674A (en) * | 2007-01-25 | 2007-08-01 | 河北农业大学 | City ditch polluted water in situ ecological purifying processing device |
| CN101050041A (en) * | 2006-04-03 | 2007-10-10 | 国家环境保护总局华南环境科学研究所 | Method for governing pollution of river surge |
| CN101254991A (en) * | 2008-03-28 | 2008-09-03 | 合肥工业大学 | Method for controlling lake eutrophication by eliminating river or aqueduct pollution |
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2010
- 2010-08-06 CN CN2010102484222A patent/CN101913715B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101050041A (en) * | 2006-04-03 | 2007-10-10 | 国家环境保护总局华南环境科学研究所 | Method for governing pollution of river surge |
| CN101007674A (en) * | 2007-01-25 | 2007-08-01 | 河北农业大学 | City ditch polluted water in situ ecological purifying processing device |
| CN101254991A (en) * | 2008-03-28 | 2008-09-03 | 合肥工业大学 | Method for controlling lake eutrophication by eliminating river or aqueduct pollution |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102505666A (en) * | 2011-12-22 | 2012-06-20 | 南京信息工程大学 | Hydraulic sluicing building capable of improving self-cleaning capacity of water body by river drop |
| CN109231513A (en) * | 2018-10-19 | 2019-01-18 | 四川安达尔环保工程有限公司 | A kind of endogenous pollution governing system |
| CN112875880A (en) * | 2021-01-20 | 2021-06-01 | 无锡金洁环保技术有限公司 | Aeration device based on Fibonacci number sequence arrangement and use method |
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| CN101913715B (en) | 2012-02-22 |
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