CN102505666A - Hydraulic sluicing building capable of improving self-cleaning capacity of water body by river drop - Google Patents
Hydraulic sluicing building capable of improving self-cleaning capacity of water body by river drop Download PDFInfo
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- CN102505666A CN102505666A CN2011104334775A CN201110433477A CN102505666A CN 102505666 A CN102505666 A CN 102505666A CN 2011104334775 A CN2011104334775 A CN 2011104334775A CN 201110433477 A CN201110433477 A CN 201110433477A CN 102505666 A CN102505666 A CN 102505666A
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/40—Protecting water resources
- Y02A20/402—River restoration
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Abstract
The invention relates to a hydraulic sluicing building, in particular to a hydraulic sluicing building capable of improving self-cleaning capacity of a water body by river drop. A rubber dam is adopted in a sluicing direction of the hydraulic sluicing building; the dam face of the rubber dam has a curve shape of a step or a sine curve or a cosine curve and the like; and an inclination angle of the rubber dam on the sluicing side of the hydraulic sluicing building is 30 to 60 degrees. According to the invention, a new hydraulic sluicing building is built at the position of larger river drop or the morphology of the dam face on the sluicing side of the original hydraulic sluicing building of a river is changed, so that the properties of water flow which passes through the hydraulic sluicing building are improved, the turbulence degree of the water body is improved, more oxygen in the atmosphere enters the water body so as to become dissolved oxygen, the self-cleaning capacity of the water body is improved, pollutants in the water body are partially degraded, the organic pollution degree is effectively reduced, and nutrient salt is transformed to a certain degree.
Description
Technical field
The present invention relates to a kind of Hydraulic Outlet building, particularly a kind of Hydraulic Outlet building that utilizes river fall to improve water body self-purification ability.
Background technology
Present national water contamination phenomenon is on the rise, water quality goes from bad to worse.Show that according to China Environmental State Bulletin in 2010 the Changjiang river, the Yellow River, the Zhujiang River, Song Hua River, Huaihe River, Haihe River and the Liaohe River seven big water systems totally are slight pollution.Article 204, in 409 face of land lands that abounds in rivers and lakes in the river controlling/monitoring section, the section ratio of I～III class, IV～V class and bad V class water quality is respectively 59.9%, 23.7% and 16.4%.Wherein, the Changjiang river, Zhujiang River water quality are good, and Song Hua River, Huaihe River are slight pollution, and the Yellow River, the Liaohe River are intermediate pollution, and Haihe River is serious pollution.In 26 states control emphasis lakes (reservoir), satisfy II class water quality 1, account for 3.8%; 5 of III class account for 19.2%; 4 of IV class account for 15.4%; 6 of V class account for 23.1%; 10 of bad V class account for 38.5%.In the river composite governance process, normally used physical measure has: cut dirty pollution treatment, bed mud dredging, the regulation of bank protection shore protection etc.; The biochemistry measure has: artificial water purification agent, microorganism fungus kind, the restoring river wetland etc. thrown in.Wherein recovering water quality is a very important target, but it was both uneconomical to rely on above measure merely, also unreasonable.Should be when cutting down pollution load energetically, the self-purification capacity in river is regarded as the environmental assets of a preciousness, it is restored as far as possible and makes full use of.Utilize the river unique characteristics, improve flow shape, improving water body self-purification ability is the design's main purpose.
The river itself has contained huge energy in flow process, increase oxygen in water (DO) content if can make full use of this natural energy, will be a kind of desirable oxygenation measure.Current effluent through Hydraulic Outlet buildings such as the lock built in the river, weir, because the strong turbulent fluctuation and the aeration of current, the DO content of water body is had comparatively significantly improve.
Water body turbulent fluctuation degree is strong more; DO concentration increases faster; This is because turbulence intensity is bigger, and water surface and inner turbulent fluctuation kinetic energy are healed big, and is theoretical according to the oxygen flux of surperficial reoxygenation; Surperficial reoxygenation speed that causes thus and surperficial reoxygenation are also big more to the speed of diffusion under water, so the dissolved oxygen concentration growth is very fast.Turbulent fluctuation has considerable influence to organic degradation rate, and turbulence intensity is big more, and the degradation rate of organic matter in water body is big more.So, change the flow shape of city river, increase the turbulent fluctuation degree of current, will improve water body DO effectively, make that organic contamination is reduced effectively in the water body, nutritive salt obtains conversion to a certain degree, and water body self-purification ability is improved.
It is very many to have built Hydraulic Outlet buildings such as all kinds of dams, weir, lock in China river; But weir body, dam body surface all are planarized structures, and concrete matrix is not passed through particular design; The potential energy of water body in flow process is wasted, rationally do not utilize in addition.Therefore; Turbulent fluctuation process in the time of can making full use of water body through the Hydraulic Outlet building through designing the Hydraulic Outlet building of some special shapes, makes current more violent through out-of-date water body turbulent fluctuation degree; Oxygen in the more much gas is got into more become DO in the water body; And in water body, reasonably spread, fail and move, and reduce the organic contamination degree effectively, make nutritive salt obtain conversion to a certain degree.
Summary of the invention
Technical problem:The present invention is through changing the sluicing side dam facing form of Hydraulic Outlet building; Improve the current character through the Hydraulic Outlet building, improve the turbulent fluctuation degree of water body, oxygen in the more much gas is got into more becomes DO in the water body; Improve water body self-purification ability; Make in the water body pollutant obtain the part degraded, reduce the organic contamination degree effectively, make nutritive salt obtain conversion to a certain degree.
Technical scheme:A kind of Hydraulic Outlet building that utilizes river fall to improve water body self-purification ability, wherein: the sluicing direction at the Hydraulic Outlet building is material with the rubber dam, and the rubber dam dam facing is curve shape or stairstepping, the side rubber dam body inclination angle that sluices is the 30-60 degree.
Said sluicing one side rubber dam body inclination angle is the 40-50 degree.
Described rubber dam dam facing curve shape is sinusoidal or cosine curve shape.
Beneficial effect:
(1) design of staged or curvilinear style dam facing can change the streamflow characteristic in very short time; Can evoke a lot of globules, increase the aqueous vapor contact area, making more, oxygen entering water body becomes DO; Reduce the water body organic contamination, reach the purpose that improves water body self-purification ability.
(2) staged or curvilinear style dam facing all are significantly higher than planar to water body watercourse aeration aspect, pollutant removal, prolongation biomembrane action time, the advantage that improves aspects such as water body self-purification ability.The results showed: water body is through about 52 ° an of gradient; After vertical height is the small-sized overflow weir about 120cm; Planar overflow weir DO has increased by 182.69%; And the increase of sinusoidal or cosine curve shape 355.76%, reduced by 0.05%, 0.78% respectively through planar overflow weir total nitrogen, total phosphorus; And reduced by 4.89%, 5.97% respectively through water body TN, the TP of sinusoidal or cosine curve shape.
(3) current are flowing through under the same distance condition, and sluicing side dam body angle of inclination to the equal best results in aspects such as water reoxygenation, pollutant removal, is superior to the dam body at other angles of inclination in the time of 40 °-50 °.The results showed: water body is after a vertical height is sinusoidal (cosine curve shape) overflow weir about 120cm; Water body is 30 °, 45 °, 60 ° overflow weirs through three gradients; And after the identical distance of flowing through (150cm); The DO increment rate is respectively 420.98%, 473.04%, 438.22%, and the total nitrogen reduced rate is respectively 7.68%, 5.63%, 4.43%; The total phosphorus reduced rate is respectively 5.41%, 11.11%, 6.41%; Permanganate index reduced rate is respectively 1.48%, 6.34%, 1.55%, so resultant effect is best when the gradient is 45 ° of left and right sides.
(4) dam body materials: choose rubber dam for transforming host material, cost is low, and is workable; And rubber dam can influence biomembranous give birth to and comes off, in actual motion, if the dam facing roughness is excessive; Then the biomembrane of giving birth to blocked up, influence biomembranous permeability, the function of purifying water body can not finely be brought into play; And old and feeble biomembrane difficult drop-off is prone to decompose the release pollutant, the recontamination water body; Dam facing is too smooth, and biomembrane is being difficult to give birth to, and the inanimate object membrane interaction only relies on water body machinery reoxygenation to cross purifying water body, and efficient is lower.Test shows: water body is a 120cm left and right plane type overflow weir through a vertical height respectively; Its host material is respectively concrete and plastic sheeting; Two kinds of equal attached biological films of dam facing after operation a period of time, wherein concrete and plastics dam facing DO increment rate are respectively 87.63%, 90.87%; Concrete and plastics dam facing nitrogen removal rate are respectively 3.11%, 3.30%; Total tp removal rate is respectively 4.82%, 9.13%, and so plastics dam facing effect is superior to concrete, and rubber dam compares cheaply with former concrete dam body, and there is professional factory manufacturing rubber dam in China, and operation possibility is strong.
Description of drawings
First example schematic of Fig. 1 the present invention;
Second example schematic of Fig. 2 the present invention;
Wherein: 1--rubber dam, 2-sluicing direction one side dam body inclination angle.
The specific embodiment
A kind of Hydraulic Outlet building that utilizes river fall to improve water body self-purification ability
As shown in Figure 1; Can choose the river fall larger part; Customize an elastomeric material overflow weir according to situation such as bed configuration, the river degree of depth and width; Or the side that on former overflow weir basis, will sluice transforms with rubber dam, and sluicing side rubber dam dam facing is a sinusoidal shape, and sluicing direction angle of heel is made 30 degree.
Adopting the Hydraulic Outlet building dam facing of the present invention's design is the rubber material; Sluicing side form is a sinusoidal shape, and with comparing of concrete matrix, current are more violent through out-of-date water body turbulent fluctuation degree; Oxygen in the more much gas is got into more become DO in the water body; And in water body, reasonably spread, fail and move, and reduce the organic contamination degree effectively, make nutritive salt obtain conversion to a certain degree.
A kind of Hydraulic Outlet building that utilizes river fall to improve water body self-purification ability, as shown in Figure 2, with the rubber dam material in the sluicing direction of Hydraulic Outlet building, the rubber dam dam facing is a stairstepping, sluicing direction angle of heel is made 60 degree.
Adopting the Hydraulic Outlet building dam facing of the present invention's design is the rubber material; Sluicing side form is a staged, and with comparing of concrete matrix, current are more violent through out-of-date water body turbulent fluctuation degree; Oxygen in the more much gas is got into more become DO in the water body; And in water body, reasonably spread, fail and move, and reduce the organic contamination degree effectively, make nutritive salt obtain conversion to a certain degree.
Embodiment 3
A kind of Hydraulic Outlet building that utilizes river fall to improve water body self-purification ability; Can choose the river fall larger part; Customize an elastomeric material overflow weir according to situation such as bed configuration, the river degree of depth and width; Or the side that on former overflow weir basis, will sluice transforms with rubber dam, and sluicing side rubber dam dam facing is the cosine curve shape, and sluicing direction angle of heel is made 45 degree.
Adopting the Hydraulic Outlet building dam facing of the present invention's design is the rubber material; Sluicing side form is the cosine curve shape, and with comparing of concrete matrix, current are more violent through out-of-date water body turbulent fluctuation degree; Oxygen in the more much gas is got into more become DO in the water body; And in water body, reasonably spread, fail and move, and reduce the organic contamination degree effectively, make nutritive salt obtain conversion to a certain degree.
Claims (3)
1. Hydraulic Outlet building that utilizes river fall to improve water body self-purification ability; It is characterized in that: the sluicing direction at the Hydraulic Outlet building is material with the rubber dam; The rubber dam dam facing is curve shape or stairstepping, and the side rubber dam body inclination angle that sluices is the 30-60 degree.
2. a kind of Hydraulic Outlet building that utilizes river fall to improve water body self-purification ability according to claim 1, it is characterized in that: the side rubber dam body inclination angle that sluices is the 40-50 degree.
3. a kind of Hydraulic Outlet building that utilizes river fall to improve water body self-purification ability according to claim 1, it is characterized in that: described rubber dam dam facing curve shape is sinusoidal or cosine curve shape.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011104334775A CN102505666A (en) | 2011-12-22 | 2011-12-22 | Hydraulic sluicing building capable of improving self-cleaning capacity of water body by river drop |
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| CN2011104334775A CN102505666A (en) | 2011-12-22 | 2011-12-22 | Hydraulic sluicing building capable of improving self-cleaning capacity of water body by river drop |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103334406A (en) * | 2013-06-09 | 2013-10-02 | 中国长江三峡集团公司 | Ladder type ecological landscape retaining dam suitable for urban river and construction method thereof |
| 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 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101913715A (en) * | 2010-08-06 | 2010-12-15 | 河海大学 | Device and method for enriching oxygen of polluted water by combining spiles on overflow dam face |
| CN202073075U (en) * | 2011-05-09 | 2011-12-14 | 广东省水利水电科学研究院 | Discontinuous convex type step energy dissipater |
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- 2011-12-22 CN CN2011104334775A patent/CN102505666A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101913715A (en) * | 2010-08-06 | 2010-12-15 | 河海大学 | Device and method for enriching oxygen of polluted water by combining spiles on overflow dam face |
| CN202073075U (en) * | 2011-05-09 | 2011-12-14 | 广东省水利水电科学研究院 | Discontinuous convex type step energy dissipater |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103334406A (en) * | 2013-06-09 | 2013-10-02 | 中国长江三峡集团公司 | Ladder type ecological landscape retaining dam suitable for urban river and construction method thereof |
| 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 |
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Application publication date: 20120620 |