CN102633365B - Wind-energy superimposed-negative-pressure ventilation reoxygenation wastewater treatment system for artificial wetland - Google Patents
Wind-energy superimposed-negative-pressure ventilation reoxygenation wastewater treatment system for artificial wetland Download PDFInfo
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- CN102633365B CN102633365B CN2012101212766A CN201210121276A CN102633365B CN 102633365 B CN102633365 B CN 102633365B CN 2012101212766 A CN2012101212766 A CN 2012101212766A CN 201210121276 A CN201210121276 A CN 201210121276A CN 102633365 B CN102633365 B CN 102633365B
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- Y02W10/33—Wastewater or sewage treatment systems using renewable energies using wind energy
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Abstract
The invention relates to a wastewater treatment system for environmental engineering and particularly relates to a wind-energy superimposed-negative-pressure ventilation reoxygenation wastewater treatment system for an artificial wetland. In order to solve the technical problem of low oxygen content in the artificial wetland of the existing artificial wetland wastewater treatment system during the treatment of wastewater, the invention provides the wind-energy superimposed-negative-pressure ventilation reoxygenation wastewater treatment system for the artificial wetland. The wind-energy superimposed-negative-pressure ventilation reoxygenation wastewater treatment system for the artificial wetland is characterized in that a ventilation system drives a windmill and fan blades connected with the windmill to rotate by using wind energies so as to form superimposed negative pressure, a diameter-reducing ventilation pipe, of which the other end is communicated with the atmosphere through an upward short pipe, is pumped to generate enhanced negative pressure, the flow and diffusion of air in a pipeline are increased, the reoxygenation of the wetland is intensified, and thus the degradation and nitrification reaction of aerobionts are promoted. The wind-energy superimposed-negative-pressure ventilation reoxygenation wastewater treatment system for the artificial wetland has the advantages of sufficient utilization of wind energy and pressure energy, intensification in reoxygenation, high denitrification efficiency, good purifying effect and the like.
Description
Technical field
The present invention relates to the environmental engineering Sewage treatment systems, be specifically related to a kind of wind energy stack negative pressure ventilation reoxygenation artificial marsh sewage treatment system.
Background technology
Constructed wetland waste water treatment technology is the ecological wastewater processing new technology that 20 century 70s grow up, its principle is that the mutual synergy between plant, microorganism and the filler that utilizes in artificial swamp realizes water correction, has good society, economy and environment benefit.
In Practical Project, the content of oxygen is generally on the low side is the important factor of restriction artificial swamp sewage purification.The oxygen level deficiency causes easily that aerobe is active low and Ammonia Nitrification is insufficient, purify and nitric efficiency low.For overcoming defects, both at home and abroad in the wetland process of construction, some employing power consumption aeration modes, some employings reduce the wetland degree of depth and increase the reoxygenation ability, perhaps adopt Chinese patent literature 200710078209.X by vent-pipe being set and taking into water-reaction-water outlet-emptying circular flow pattern, consolidation system bottom reoxygenation, but the air flow property in vent-pipe is poor, is unfavorable for reoxygenation; Perhaps adopt Chinese patent literature CN 1562772A to utilize the airway of ventpipe two ends connection directly to communicate with atmosphere respectively at connected the reaching of the extraction fan on earth's surface, the rotation of its wind energy exhaust fan lacks motivating force, is unfavorable for diffusion and the wetland reoxygenation of air; Perhaps adopt Chinese patent literature 200710170584.7 to utilize fine grain size matrix to become ribbon indirectly to arrange with middle particle diameter matrix, the surface exposure of middle particle diameter matrix comes reoxygenation as the air reaeration passage, and the reoxygenation effect is better, but space hold is more.
Summary of the invention
In order to solve oxygen level technical problem on the low side in the wetland that existing artificial marsh sewage treatment system exists when disposing of sewage, the present invention proposes a kind of wind energy negative pressure ventilation reoxygenation artificial marsh sewage treatment system that superposes.
Technical scheme of the present invention:
A kind of wind energy stack negative pressure ventilation reoxygenation artificial marsh sewage treatment system comprises the pond body, is filled in matrix in the body of pond, is planted in the vegetation of stromal surface, and its special feature is, also comprises: water distribution system, blow and vent system and water exhaust system;
Water distribution system: be positioned at stromal surface the cloth pond, be suspended on top, cloth pond water leg, be connected with the cloth pond and level is embedded in the intramatrical water distribution branch pipe that is no less than;
Ventilation system: L-shaped shape and be embedded in water distribution branch pipe below be no less than one ventpipe, by 45 ° of elbow pieces upwards be connected to the ventpipe crosspiece mouth of pipe the air inlet short tube, be positioned at the gas barrier of the perpendicular section of ventpipe end top;
The ventpipe crosspiece mouth of pipe stretches out the pond body side surface, its perpendicular section mouth of pipe stretches out stromal surface, it is embedded in intramatrical part and is provided with some ventilating pits, and the perpendicular section of ventpipe end is that the thick middle thin grading structure in two ends, the caliber of wherein the most carefully locating are the 1/5-1/3 of ventpipe caliber; The inlet mouth of air inlet short tube is higher than ventpipe crosspiece and its inlet mouth place caliber caliber greater than ventpipe;
Gas barrier comprises the windmill that is fixed in ventpipe top, is positioned at the little flabellum that the perpendicular section of ventpipe end pipe is connected with windmill, described windmill comprises four rectangle sheet master flabellums, main flabellum afterbody is two arc-like sheets that tangent radian is 1.05-1.4, main flabellum minor face vertically is connected in same rotating shaft, vertical between adjacent two main flabellums, relative two main flabellum centrosymmetry;
Water exhaust system: the water port, the water port that are positioned at body bottom, pond are connected with water level pipe, and water level pipe is provided with the altitude valve that is positioned at different heights.
Wind energy stack negative pressure ventilation reoxygenation artificial marsh sewage treatment system provided by the invention, preferred, the caliber of air inlet short tube inlet mouth is 1.2-1.8 times of ventpipe caliber; Ventpipe is positioned at same level, alternately arranges.
Wind energy stack negative pressure ventilation reoxygenation artificial marsh sewage treatment system provided by the invention, preferred, described air inlet short tube exceeds ventpipe crosspiece 3cm-5cm,
Wind energy stack negative pressure ventilation reoxygenation artificial marsh sewage treatment system provided by the invention, preferred, between the perpendicular section of ventpipe and crosspiece, the central angle of turning circular arc is 45 degree.
Wind energy provided by the invention stack negative pressure ventilation reoxygenation artificial marsh sewage treatment system, preferred, described cloth pond is placed in the stromal surface middle part; Water leg is the pulsed water leg, hangs over cloth pond central authorities top.
Wind energy stack negative pressure ventilation reoxygenation artificial marsh sewage treatment system provided by the invention, preferred, the described pond body degree of depth is 1.8 m-2.0m, described altitude valve is between distance stromal surface 0.8m-1.0m; Described ventpipe crosspiece is horizontally embedded in the position of distance stromal surface less than 80cm.
Beneficial effect of the present invention:
The first, the key property of ventilation system is the multiple negative pressure of wind energy stack, and the barometric point that increases vent-pipe two ends is poor, promotes flowing and diffusion of pipeline Air, increases the dissolved oxygen of wetland mesostroma, is that nitration reaction is created favourable power condition.Windmill rotates fast with the wind, and the little flabellum that drive is attached thereto rotates together, form two-stage stack negative pressure, and, variation due to the perpendicular section of vent-pipe end caliber produces Venturi effect, forms three grades of stack negative pressure, thereby strengthen flowing and diffusion of breather line Air, and be diffused in wetland by the ventilating pit in breather line; Special windmill master flabellum form can catch the function that difference be the wind comes from, and can utilize to greatest extent wind energy.
The second, the mode of pulse water distribution can realize the automatic cycle operation, is conducive to give full play to effect and the strengthening system reoxygenation of matrix fill.In the process of water distribution at intermittence, the water distribution with the cloth pond of catchmenting by water leg, can realize water distribution uniformity, the effectively effect of performance matrix fill, and reinforcement reoxygenation effect is arranged three times, the one, the water inlet pipe water delivery is to the process of water leg, the 2nd, the water of water leg is poured the cloth pond into to the process of water distribution branch pipe, the 3rd, there is the running clearance of water distribution in each cycle of operation, and above-mentioned three processes have all increased contacting of water and air, have increased the reoxygenation effect.
The 3rd, utilize water level to control aerobic and anaerobism subregion, realize that nitrification and denitrification is integrated, be convenient to management, reduce land used.
Utilize the liquid level rationalization partition from being building up to of artificial swamp, from intermittence water distribution to wind energy and pressure energy utilization etc., be all reasonably to utilize natural principle, carry out ecological wastewater processing and be energy-saving and environmental protection, ecological Sewage treatment systems.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the partial enlarged drawing of A part in Fig. 1;
Fig. 3 is the structural representation of windmill;
In figure: 1. water inlet pipe, 2. cloth pond, 3. water leg, 4. transverse axis, 5. cloth water conduit tube, 6. water distribution branch pipe, 7. water distributing pore, 8. windmill, 9. common rotating shaft, 10. bearing, 12. little flabellums, 13. ventpipes, 14. the air inlet short tube, 15. ventilating pits, 16. matrix, 17. pond bodies, 18. water collecting basin, 19. tanks, 20 water level pipes, 21. altitude valves, 22. rising pipe, 8w. master's flabellum, 8s. arc-like sheet.
Embodiment
Below, the present invention will be further described by reference to the accompanying drawings.
Wind energy stack negative pressure ventilation reoxygenation artificial marsh sewage treatment system provided by the invention mainly comprises: pond body 17, water distribution system, ventilation system and water exhaust system; Wherein water distribution system comprises water inlet pipe 1, pulsed water leg 3, cloth pond 2, cloth water conduit tube 5, more than one water distribution branch pipe 6, ventilation system comprises more than one ventpipe 13, air inlet short tube 14, windmill 8, little flabellum 12, and water exhaust system comprises water collecting basin 18, water level pipe 20, tank 19, rising pipe 22.
The degree of depth of pond body 17 is 1.8 m-2.0m, the interior filling substrate 16 of pond body 17, matrix 16 surface grafting vegetation.Matrix 16 can be selected grit, hard coal, biological ceramic particle, blast furnace slag etc., and vegetation should be selected the native vegetation of local waterlogging good purification, such as reed, cyperus alternifolius etc.
Water distribution branch pipe 6 belows, apart from matrix 16 surfaces less than burying ventpipe 13 underground in 80cm place same level.The L-shaped shape of ventpipe 13 is alternately buried underground, and its perpendicular section end stretches out matrix 16 surfaces, and its crosspiece end stretches out pond body 17 sides; Between its crosspiece and perpendicular section, the turning is circular-arc, and the right central angle of circular arc is 45 °; The part that ventpipe 13 is embedded in matrix 16 is provided with ventilating pit 15.The perpendicular section end of ventpipe 13 is the thick middle thin grading structure in two, and the caliber of wherein the most carefully locating is the 1/5-1/3 of ventpipe 13 calibers.Air inlet short tube 14 is connected by 45 ° of elbow pieces with ventpipe 13 crosspiece ends; The inlet mouth of air inlet short tube 14 upwards, and the inlet mouth of air inlet short tube 14 exceeds ventpipe 13 crosspiece 3-5cm, is in order to ensure penetrating into water in ventpipe with oozing under the ventilating pit in ventpipe and can be not excessive.The caliber of air inlet short tube 14 inlet mouths is greater than the caliber of ventpipe 13, thereby guarantees that with the air input that increases air air-flow is unimpeded.Windmill 8 is fixed on the vertical direction of the perpendicular section of ventpipe 13, and little flabellum 12 is positioned at the perpendicular section end pipe of ventpipe 13, and both the common rotating shaft 9 by bearing 10 is connected, and bearing 10 is fixed in vent-pipe 13 inboards by mounting block 11.Windmill 8 comprises four rectangle sheet master flabellum 8w, and main flabellum 8w afterbody is the arc-like sheet 8s that two tangent radians are 1.05-1.4, and main flabellum 8w minor face vertically is connected in same rotating shaft, and is vertical between adjacent two main flabellum 8w, relative two main flabellum 8w centrosymmetry.Windmill 8 and little flabellum 12 have consisted of gas barrier.
Pass through water inlet pipe 1 water delivery to pulsed water leg 3 through pretreated storm runoff sewage such as grid, rotational flow grit chambers, after reaching certain volume, pulsed water leg 3 automatic turnings, water is poured in following cloth pond 2, after pulsed water leg 3 upset turned letter water, automatically set back, sewage from water inlet pipe 1 continues to collect, rerun said process after reaching certain volume, circular flow goes round and begins again.
Water in cloth pond 2 again by cloth water conduit tube 5, by the water distribution in the matrix 16 of the water distributing pore 7 on water distribution branch pipe 6, carry out aerobic nitrification reaction and anaerobic denitrifying and react in matrix 16.The differentiation of aerobic nitrification reaction zone and anoxic, anaerobic denitrifying reaction zone is to realize by the altitude valve 21 of opening different heights.Be furnished with ventpipe 13 in the matrix 16 of the top of altitude valve 21 and strengthen ventilation, increase dissolved oxygen, be the aerobic nitrification reaction zone.The below matrix 16 of altitude valve 21 is in full water state all the time, is the denitrification zone of anoxic and anaerobism, is used for strengthening denitrification denitrogenation efficient.
Air enters ventpipe 13 by air inlet short tube 14, diffuse in filler by the ventilating pit 15 on ventpipe 13, simultaneously to be provided with gas barrier poor with the barometric point that increases ventpipe 13 two ends for perpendicular section end of ventpipe 13, promote flowing and diffusion of ventpipe 13 Airs, increase the dissolved oxygen in matrix 16, for nitration reaction is created favourable power condition.
The special construction of the windmill 8 in gas barrier has the functions that the difference of catching be the wind comes from, and can utilize to greatest extent wind energy, and windmill 8 is rotated fast with the wind, and windmill 8 is fanned away ambient air in rotation process, forms first step negative pressuren zone; Described windmill 8 lower ends are connected with little flabellum 12, and in the process that windmill 8 rotates, little flabellum 12 rotates thereupon, and gas is taken away, and forms second stage negative pressuren zone; The perpendicular section end of ventpipe 13 be two thick in the middle of thin grading structure, air produces stronger Venturi effect during by this structure, makes gas form again third stage negative pressuren zone in the interior little flabellum of ventpipe 13 12 lower ends.
The opening bore of described air inlet short tube 14 is greater than the caliber of the ventpipe 13 that is attached thereto, and it exceeds the ventpipe 13 crosspiece 3cm-5cm that are attached thereto.The effect of described air inlet short tube 14, the one, guarantee to communicate with atmosphere, increase the mobility of gas, another is to guarantee to penetrate into intermittence that water in ventpipe 13 oozes for 15 times with the ventilating pit in ventpipe 13 and can be not excessive.
By the water distribution at intermittence, nitrification zone and denitrification zone in matrix 16 fully react through pretreated runoff sewage such as grid, rotational flow grit chambers, import water collecting basin 18, then drain into effluent trough 19 by altitude valve 21, discharge through rising pipe 22.
Embodiment 1
Build two artificial swamps, wherein same facility is as follows:
The bottom surface of pond body 17 is 1.5m * 1.5m, is highly 2m, fills full matrix 16(and from small to large fills grit stone to the bottom by grating from the wetland surface, and root adds biological ceramic particle near the district), stromal surface plantation reed.The size of pulsed water leg is 6L, and the flow velocity of water inlet pipe is 37L/h, cloth water spacer eight minutes, apart from evenly burying 3 water distribution branch pipes 6 underground, water distribution aperture 5-7mm, percentage of open area 25-40% in matrix 16 upper surface 30cm place same levels; Apart from evenly burying two ventpipes 13 underground in matrix 16 upper surface 80cm place same levels, its percentage of open area is 30-70%;
Different facilities are as follows:
The A wetland: the inlet mouth caliber of air inlet short tube 14 is identical with ventpipe 13 calibers, and the perpendicular section end uniform diameter of ventpipe 13 is not established gas barrier;
The B wetland: the inlet mouth caliber of air inlet short tube 14 is 1.2 times of ventpipe 13 calibers, the perpendicular section end of ventpipe 13 is provided with for the thick grading structure in middle thin two, the caliber of wherein the most carefully locating are 1/3 of ventpipe 13 calibers the gas barrier that is comprised of windmill 8, common rotating shaft 9, bearing 10 and little flabellum 12;
The A wetland moves after one month and measures indices (DO, COD, NH from the water port water intaking
4 +-N, TN);
The B wetland moves after one month and measures indices (DO, COD, NH from the water port water intaking
4 +-N, TN);
Result is as follows:
| Water-quality guideline | COD（mg/L） | NH 4 +-N（mg/L） | TN（mg/L） |
| Former water | 100-300 | 10-18 | 16-30 |
| The A wetland | 53-68 | 7.1-8.2 | 8.7-9.8 |
| The B wetland | 30-41 | 3.0-3.7 | 4.3-5.2 |
Experiment results proved by the wind energy negative pressure consolidation system reoxygenation that superposes, can effectively increase the reoxygenation situation of wetland, improves the removal efficient of organism and ammonia nitrogen and total nitrogen.
Claims (6)
1. a wind energy stack negative pressure ventilation reoxygenation artificial marsh sewage treatment system, comprise pond body (17), be filled in the interior matrix (16) of pond body (17), be planted in the surperficial vegetation of matrix (16), it is characterized in that, also comprises:
Water distribution system: be positioned at matrix (16) surface cloth pond (2), be suspended on top, cloth pond (2) water leg (3), be connected with cloth pond (2) and level is embedded in the water distribution branch pipe (6) of of being no less than of matrix (16);
Ventilation system: L-shaped shape and be embedded in water distribution branch pipe (6) below be no less than one ventpipe (13), by 45 ° of elbow pieces upwards be connected to ventpipe (13) the crosspiece mouth of pipe air inlet short tube (14), be positioned at the gas barrier of the perpendicular section of ventpipe (13) end top;
Ventpipe (13) the crosspiece mouth of pipe stretches out pond body (17) side, its perpendicular section mouth of pipe and stretches out matrix (16) surface, its part that is embedded in matrix (16) is provided with some ventilating pits (15), and perpendicular section end of ventpipe (13) is that the thick middle thin grading structure in two ends, the caliber of wherein the most carefully locating are the 1/5-1/3 of ventpipe (1) caliber; The inlet mouth of air inlet short tube (14) is higher than ventpipe (13) crosspiece and its inlet mouth place caliber caliber greater than ventpipe (13);
Gas barrier comprises the windmill (8) that is fixed in ventpipe (13) top, is positioned at the little flabellum (12) that the perpendicular section of ventpipe (13) end pipe is connected with windmill (8), described windmill (8) comprises four rectangle sheet master flabellums (8w), main flabellum (8w) afterbody is the arc-like sheet (8s) that two tangent radians are 1.05-1.4, main flabellum (8w) minor face vertically is connected in same rotating shaft, vertical between adjacent two main flabellums (8w), relative two main flabellum (8w) centrosymmetry;
Water exhaust system: the water port, the water port that are positioned at pond body (17) bottom are connected with water level pipe (20), and water level pipe (20) is provided with the altitude valve (21) that is positioned at different heights.
2. wind energy according to claim 1 stack negative pressure ventilation reoxygenation artificial marsh sewage treatment system, is characterized in that, the caliber at air inlet short tube (14) inlet mouth place be ventpipe (13) caliber 1.2-1.8 doubly; Ventpipe (13) is positioned at same level, alternately arranges.
3. wind energy stack negative pressure ventilation reoxygenation artificial marsh sewage treatment system according to claim 1 and 2, is characterized in that, described air inlet short tube (14) exceeds ventpipe (13) crosspiece 3cm-5cm.
4. wind energy stack negative pressure ventilation reoxygenation artificial marsh sewage treatment system according to claim 1 and 2, is characterized in that, between the perpendicular section of ventpipe (13) and its crosspiece, the central angle of turning circular arc is 45 degree.
5. wind energy stack negative pressure ventilation reoxygenation artificial marsh sewage treatment system according to claim 1 and 2, is characterized in that, described cloth pond (2) is placed in middle part, matrix (16) surface; Water leg (3) is pulsed water leg (3), hangs over above the central authorities of cloth pond (2).
6. wind energy stack negative pressure ventilation reoxygenation artificial marsh sewage treatment system according to claim 1 and 2, is characterized in that, described pond body (17) degree of depth is 1.8-2.0m, and described altitude valve (21) is apart from the surperficial 0.8-1.0m of matrix (16); Described ventpipe (13) crosspiece is embedded in apart from the surperficial position less than 80cm of matrix (16).
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| CN2012101212766A CN102633365B (en) | 2012-04-24 | 2012-04-24 | Wind-energy superimposed-negative-pressure ventilation reoxygenation wastewater treatment system for artificial wetland |
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| CN2012101212766A CN102633365B (en) | 2012-04-24 | 2012-04-24 | Wind-energy superimposed-negative-pressure ventilation reoxygenation wastewater treatment system for artificial wetland |
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| CN102633365B true CN102633365B (en) | 2013-06-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI558310B (en) * | 2015-03-24 | 2016-11-21 | Res Inst Of Forestry New Technology Chinese Academy Of Forestry | Reoxygenation one kind of apparatus and reoxygenation for artificial wetland |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104649418A (en) * | 2015-02-07 | 2015-05-27 | 同济大学 | Oxygen supply-controllable vertical-underflow artificial wetland denitriding device |
| CN107935318A (en) * | 2017-12-22 | 2018-04-20 | 湖南中彩生态环境科技有限公司 | A kind of breeding wastewater ecological management system |
| CN109160614A (en) * | 2018-11-15 | 2019-01-08 | 济南大学 | A kind of novel drowned flow artificial wet land |
| CN109516649A (en) * | 2018-12-27 | 2019-03-26 | 中关村海绵城市工程研究院有限公司 | A kind of Wind energy storage formula artificial wetland purifying system |
| CN110745958B (en) * | 2019-10-31 | 2021-09-07 | 山东大学 | Subsurface flow constructed wetland system for enhancing denitrification and unpowered reoxygenation and application thereof |
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| JP2003080280A (en) * | 2001-09-10 | 2003-03-18 | Izuwa:Kk | Organic sewage treatment method not requiring flow end treatment and equipment for the same |
| US7850848B2 (en) * | 2006-09-18 | 2010-12-14 | Limcaco Christopher A | Apparatus and process for biological wastewater treatment |
| CN101229937B (en) * | 2008-01-22 | 2010-11-17 | 南京大学 | High-load capillary infiltration trench system for treating domestic wastewater |
| KR20110104632A (en) * | 2010-03-17 | 2011-09-23 | 지유 주식회사 | Water purification device |
| CN202124519U (en) * | 2011-05-10 | 2012-01-25 | 山东建筑大学 | Buried bacteria filter |
| CN202508930U (en) * | 2012-04-24 | 2012-10-31 | 山东建筑大学 | Wind energy superposed negative pressure ventilation reoxygenation artificial wetland sewage treatment system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| TWI558310B (en) * | 2015-03-24 | 2016-11-21 | Res Inst Of Forestry New Technology Chinese Academy Of Forestry | Reoxygenation one kind of apparatus and reoxygenation for artificial wetland |
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