CN202717631U - Carbon-oxygen combined regulation and control denitrification system of horizontal subsurface-flow wetland - Google Patents
Carbon-oxygen combined regulation and control denitrification system of horizontal subsurface-flow wetland Download PDFInfo
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- CN202717631U CN202717631U CN 201220183812 CN201220183812U CN202717631U CN 202717631 U CN202717631 U CN 202717631U CN 201220183812 CN201220183812 CN 201220183812 CN 201220183812 U CN201220183812 U CN 201220183812U CN 202717631 U CN202717631 U CN 202717631U
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Abstract
The utility model discloses a carbon-oxygen combined regulation and control denitrification system of a horizontal subsurface-flow wetland, and the carbon-oxygen combined regulation and control denitrification system is provided with a treatment pond, wherein the front top of the treatment pond is provided with a water inlet pipe, the tail top of the treatment pond is provided with a discharging pipe, soil is filled inside an inner cavity of the treatment pond, a plurality of aquatic plants are planted on the soil, and the carbon-oxygen combined regulation and control denitrification system is characterized in that at least three rows and three columns of carbon-source charging pipes are vertically plugged on the rear half part of the soil, the front half part of the soil is divided into an upper layer, a middle layer and a lower layer, each layer is respectively and horizontally provided with at least three micropore aeration pipes which are arranged side by side at intervals, the front end of each micropore aeration pipe is connected with an air compressor on the ground through an air guide pipe, and the tail end of each micropore aeration pipe is sealed; and the nitrification and the denitrification are reasonably combined, so that the denitrification effect is greatly improved; and meanwhile, the problems of the existing aeration pipe such as nonuniformity in aeration, high energy consumption, easiness in blockage and the like can be overcome. The system is particularly suitable for treating the nitrogen contained waste water and the low-carbon high-nitrogen sewage of polluted water in lakes.
Description
(i). technical field: the utility model belongs to the environmental engineering technical field of sewage, more specifically relate to a kind of horizontal drowned flow artificial wet land carbon oxygen combined regulating denitrification system, be applicable to the processing of " low-carbon high-nitrogen " sewage such as sanitary sewage, polluted surface water, eutrophication water, nitrogenous effluent.
(ii). background technology: nitrogen is one of principal pollutant index characterized the surface water quality situation, and being also affects aquatic ecosystem health and stable important factor.At present, the many polluted water bodies of south China all exist the lower and characteristics that the content of nitrogen and phosphorous is relatively high of COD, and the ratio of its C:N:P, far below 100:5:1, is unfavorable for the removal of existing biological treatment system to nitrogen.
Artificial swamp is a kind of sewage treatment process grown up nineteen seventies, there is the advantages such as reduced investment, efficiency is high, environmental benefit is good, be widely used in the improvement of point-source pollution, Rural Plane Source Pollution and the municipal pollution water surroundings such as some industrial sewage, sanitary sewage, the chemical index such as TSS, COD have been had to comparatively desirable treatment effect.Yet, special sewage for this classes " low-carbon high-nitrogen " such as nitrogenous effluent, polluted lake water bodys, existing wet land system is unsatisfactory to the removal effect of nitrogen, still can not meet the water quality requirement of function of water body, improves wet land system very necessary to the removal efficiency of nitrogen.
Artificial swamp is that system comprises absorption, precipitation, the absorption of waterplant, the volatilization of nitrogen and the nitrification and denitrification effect of microorganism of matrix for the removal effect of nitrogen, and wherein the nitrification and denitrification effect of microorganism is the main path of wetland denitrogenation.Nitration reaction is by NH
4 +-N is converted into NO
3 -The process of-N, it is an oxidizing reaction, needs aerobic wetland soil envrionment conditions; And anti-nitration reaction is by NO
3 --N is converted into N
2Process, it is a reduction reaction, needs the wetland soil envrionment conditions of anaerobism and sufficient carbon source.Due to drowned flow artificial wet land, often in full water state, this restriction of self constructing causes the interior dissolved oxygen concentration of wetland on the low side, and nitration reaction is not thorough.Simultaneously, organism by a large amount of decomposition and inversion, causes denitrification stage carbon source deficiency in the nitrated stage, the activity decreased of denitrifying bacterium, thus make anti-nitration reaction slow down, nitric efficiency reduces greatly.Especially when processing " low-carbon high-nitrogen " special sewage, the denitrification effect of wetland is poorer.
For above problem, the measure of current drowned flow artificial wet land strengthened denitrification has: the one, improve dissolved oxygen levels in wetland by natural ventilation or artificial-strengthening ventilation, and strengthen nitrification; The 2nd, add carbon source promotion denitrification in wetland.These two kinds of enhancements have the following disadvantages:
1, the wetland denitrogenation depends on nitrification and two reaction process of denitrification of microorganism; and above two kinds of enhancements isolate these two processes, do not organically combine, only improve nitrification or denitrification; although certain effect is arranged, nitric efficiency is limited;
2, the natural ventilation of wetland or artificial-strengthening ventilation are all the boring aeration pipes adopted at present, and existing aeration tube is mainly that the single PVC of employing moulds pipe or steel pipe is made, piercing aperture large (being generally 3-10mm) and distribute sparse on it, thereby cause the aeration bubble large, aeration is inhomogeneous, energy consumption is high, and grit very easily enters in aeration tube while stopping aeration, the perforation on the blocking aeration pipe.
(iii) summary of the invention: the purpose of this utility model is to overcome the deficiency that above-mentioned denitrogenation measure exists, and a kind of horizontal drowned flow artificial wet land carbon oxygen combined regulating denitrification system is provided.
Specific design scheme of the present utility model is: for existing horizontal drowned flow artificial wet land denitrification system, improved, it has treating pond, the front top for the treatment of pond is equipped with water inlet pipe, delivery pipe is equipped with at the tail end top for the treatment of pond, and at the treating pond afterbody, dividing plate is housed, form drain chamber, the bottom of dividing plate is provided with relief hole drain chamber is communicated with the treating pond inner chamber, be filled with soil in the treating pond inner chamber, plant and be implanted with some strain waterplant on soil, it is characterized in that: in soil, by the latter half of at least 3 row 3 row carbon sources that vertically are fitted with for the treatment of pond, add pipe, in soil, lean on the treating pond first half, in, lower three layers, every layer of horizontally disposed micropore aeration pipe that has at least 3 intervals to be arranged side by side respectively, the front end of all micropore aeration pipes collects the air compressor connected on earth's surface by airway, the tail end sealing of all micropore aeration pipes.
Micropore aeration pipe described in the utility model is comprised of supporting tube and its outer silicon rubber aeration film of parcel, have at least four axial arranged air channels on described supporting tube outer wall, the upper end that is positioned at supporting tube in every air channel has air inlet port, and aperture is 0.5-1.0mm; Be densely covered with micropore on the silicon rubber aeration film, aperture is 0.03-0.08mm.
Carbon source described in the utility model adds on pipe and has vertically the uniform through hole of four rows of arranging, adjacent two exhausting holes layouts that misplace up and down, and in every row between through hole and through hole apart from being 100-150mm, the aperture design of all through holes is 3-6mm.It is also feasible that certain through hole otherwise distributes, but carry out uniform with whole tube wall, is more rational.
Carbon source described in the utility model adds in pipe and adds glucose, starch, sucrose, methyl alcohol, ethanol a kind of or arbitrary combination wherein.
Described in the utility model, water inlet pipe is arranged higher than soil surface; Described delivery pipe is arranged lower than soil surface.
Compared with the prior art, the beneficial effects of the utility model are embodied in:
1. the utility model utilization strengthens nitrification at soil horizontal drowned flow artificial wet land front end aeration, and carbon source regulation and control in rear end promote denitrification, thereby have greatly improved the wetland denitrification effect;
2. the micropore aeration pipe that the utility model adopts is that supporting tube adds silicone rubber membrane and makes, and is difficult for corrosion, long service life; Laser boring, micropore is evenly tiny, produces bubble little, and oxygen-transfer efficiency is high, with current other aerating apparatus, compares, and can greatly save power consumption; And micropore shrinks closedly while stopping aeration, is difficult for producing eyelet and stops up;
3. what the utility model was controlled air compressor in using is 0.1～0.5 m than aeration speed
3/ (hm
2), stop exposing to the sun the time than being 15min:15min～60min:15min, can make carbon source add carbon source dosage in pipe is 1.0～2.5 g/m
3The time, the system nitric efficiency is the highest.
(iv). the accompanying drawing explanation:
Fig. 1 is that the utility model system global structure master looks (signal) figure;
The utility model system global structure of Fig. 2 is overlooked (signal) figure;
Micropore aeration pipe structural representation in the utility model of Fig. 3;
Fig. 4 is that in the utility model, carbon source adds the tubular construction schematic diagram.
In figure: 1-air compressor, 2-water inlet pipe, 3-airway, 4-treating pond, 5-micropore aeration pipe, 6-soil, 7-waterplant, 8-carbon source adds pipe, 9-dividing plate, 10-drain chamber, 11-delivery pipe, 12-relief hole, 13-polypropylene supporting tube, 14-silicon rubber aeration film, 15-micropore, 16-air inlet port, 17-air channel, 18-through hole.
(v). embodiment:
Referring to Fig. 1, 2, the utlity model has treating pond 4, the front top for the treatment of pond 4 is equipped with water inlet pipe 2, delivery pipe 11 is equipped with at the tail end top for the treatment of pond 4, and at treating pond 4 afterbodys, dividing plate 9 is housed, form drain chamber 10, the bottom of dividing plate 9 is provided with relief hole 12 drain chamber 10 is communicated with treating pond 4 inner chambers, be filled with soil 6 in treating pond 4 inner chambers, planting on soil 6 and be implanted with some strain waterplant 7(can be reed, Canna generalis Bailey, cattail, nutgrass flatsedge, Rush, Scirpus tabernaemontani etc.), it is characterized in that: in soil 6, by latter half of 3 row 3 row (can also be more more multiple row setting of the multirow) carbon sources that vertically are fitted with for the treatment of pond 4, add pipe 8, in soil 6, lean on treating pond 4 first halfs, in, lower three layers, every layer of horizontally disposed micropore aeration pipe 5 that has 3 (can be more) intervals to be arranged side by side respectively, the front end of all micropore aeration pipes 5 collects the air compressor 1 connected on earth's surface by airway 3, the tail end sealing of all micropore aeration pipes 5.
Micropore aeration pipe described in the present embodiment 5 is comprised of polypropylene supporting tube 13 and its outer silicon rubber aeration film 14 of parcel, have eight (having four at least gets final product) axial arranged air channels 17 on described supporting tube 13 outer walls, the upper end that is positioned at supporting tube in every air channel has air inlet port 16, aperture is 0.5-1.0mm, concrete optional 0.8mm; Be densely covered with micropore 15 (employing laser boring) on silicon rubber aeration film 14, aperture is 0.03-0.08mm, concrete optional 0.05mm.
Carbon source described in the present embodiment adds on pipe 8 and has the uniform through hole 18 of four rows of arranging vertically, adjacent two exhausting holes 18 layout that misplaces up and down, and the distance up and down in every row between through hole and through hole is 100-150mm, concrete optional 120mm, the aperture design of all through holes 18 is 3-6mm, concrete optional 5mm.
Carbon source described in the present embodiment adds in pipe 8 and adds glucose, starch, sucrose, methyl alcohol, ethanol a kind of or arbitrary combination wherein.
Water inlet pipe described in the present embodiment 2 is arranged higher than soil 6 surfaces; Described delivery pipe 11 is arranged lower than soil 6 surfaces.
When the utility model is specifically implemented, in order to promote nitrification and denitrification simultaneously, improve the wetland denitrification effect, air compressor 1 than aeration speed, be 0.1～0.5 m
3/ (hm
2), stop exposing to the sun the time than being 15min:15min～60min:15min, it is 1.0～2.5 g/m that carbon source adds carbon source dosage in pipe 5
3.
The utility model working process:
Adopt the mode of operation of intermittent water inflow, plug-flow water outlet to soil by water inlet pipe, when sewage when water inlet pipe enters the wetland front end, start air compressor 1, the high-pressure air of its generation enters wetland inside through airway 3, micropore aeration pipe 5, thereby increased the dissolved oxygen in sewage, make the wetland front end form the aerobic environment condition, promoted the generation (NH of nitration reaction
4 +-N is converted into NO
3 --N); When this part contains a large amount of NO
3 -The sewage of-N, is added pipeline by carbon source and carries out the carbon source regulation and control during to the wetland rear end by horizontal plug-flow, supplements the required carbon source of denitrification, and the wetland rear end is still in detesting the anaerobic environment condition, thereby has promoted the carrying out (NO of anti-nitration reaction
3 --N is converted into N
2), finally realized the efficient removal to nitrogen.
In the utility model above-described embodiment, in soil, the upper, middle and lower of (L * B * H=1m * 0.5m * 0.4m) forebody arrange respectively 3 micropore aeration pipes that are connected in parallel, latter half of be arranged vertically 3 row 3 row totally 9 carbon sources add pipeline.Water inlet adopts the artificial distribution, when hydraulic load is 0.4m
3/ (m
2D), COD, total nitrogen, ammonia nitrogen average are respectively 30mg/L, 28.4mg/L, 25.2 mg/L, air compressor than aeration speed, be 0.1～0.5 m
3/ (hm
2), stop exposing to the sun the time than being 15min:15min～60min:15min, it is 1.0～2.5 g/m that carbon source adds glucose dosage in pipe
3, the clearance of measurement result COD, total nitrogen, ammonia nitrogen is respectively 50.6%, 86.3%, 99.2%.Experimental result shows to have significantly improved the wetland nitric efficiency by the method at the oxygenation of horizontal drowned flow artificial wet land front end, rear end supplementary carbon source.
Claims (4)
1. a horizontal drowned flow artificial wet land carbon oxygen combined regulating denitrification system, there is treating pond, the front top for the treatment of pond is equipped with water inlet pipe, delivery pipe is equipped with at the tail end top for the treatment of pond, and at the treating pond afterbody, dividing plate is housed, form drain chamber, the bottom of dividing plate is provided with relief hole drain chamber is communicated with the treating pond inner chamber, be filled with soil in the treating pond inner chamber, plant and be implanted with some strain waterplant on soil, it is characterized in that: in soil, by the latter half of at least 3 row 3 row carbon sources that vertically are fitted with for the treatment of pond, add pipe, in soil, lean on the treating pond first half, in, lower three layers, every layer of horizontally disposed micropore aeration pipe that has at least 3 intervals to be arranged side by side respectively, the front end of all micropore aeration pipes collects the air compressor connected on earth's surface by airway, the tail end sealing of all micropore aeration pipes.
2. a kind of horizontal drowned flow artificial wet land carbon oxygen combined regulating denitrification system according to claim 1, it is characterized in that: described micropore aeration pipe is comprised of supporting tube and its outer silicon rubber aeration film of parcel, have at least four axial arranged air channels on described supporting tube outer wall, the upper end that is positioned at supporting tube in every air channel has air inlet port, and aperture is 0.5-1.0mm; Be densely covered with micropore on the silicon rubber aeration film, aperture is 0.03-0.08mm.
3. a kind of horizontal drowned flow artificial wet land carbon oxygen combined regulating denitrification system according to claim 1, it is characterized in that: described carbon source adds on pipe and has the uniform through hole of four rows of arranging vertically, the adjacent two exhausting holes layout that misplaces up and down, and the distance in every row between through hole and through hole is 100-150mm, and the aperture design of all through holes is 3-6mm.
4. a kind of horizontal drowned flow artificial wet land carbon oxygen combined regulating denitrification system according to claim 1, it is characterized in that: described water inlet pipe is arranged higher than soil surface; Described delivery pipe is arranged lower than soil surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220183812 CN202717631U (en) | 2012-04-27 | 2012-04-27 | Carbon-oxygen combined regulation and control denitrification system of horizontal subsurface-flow wetland |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220183812 CN202717631U (en) | 2012-04-27 | 2012-04-27 | Carbon-oxygen combined regulation and control denitrification system of horizontal subsurface-flow wetland |
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| CN 201220183812 Withdrawn - After Issue CN202717631U (en) | 2012-04-27 | 2012-04-27 | Carbon-oxygen combined regulation and control denitrification system of horizontal subsurface-flow wetland |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102689988A (en) * | 2012-04-27 | 2012-09-26 | 湖北理工学院 | Carbon-oxygen combined regulatory denitrification system for horizontal underflow constructed wetlands |
| CN103739081A (en) * | 2014-01-13 | 2014-04-23 | 上海交通大学 | Subsurface flow wetland device for enhanced nitrogen removal of low-pollution water |
| CN107151056A (en) * | 2017-06-27 | 2017-09-12 | 郑州大学环境技术咨询工程有限公司 | It is a kind of to strengthen the horizontal drowned flow artificial wet land system of denitrification |
| CN107998874A (en) * | 2017-12-19 | 2018-05-08 | 南京科技职业学院 | A kind of artificial swamp VOCs exhaust gas purifying methods and system |
| CN115611398A (en) * | 2022-10-10 | 2023-01-17 | 浙江浙能镇海天然气发电有限责任公司 | Concentrated wastewater pool with low Ph false alarm frequency |
-
2012
- 2012-04-27 CN CN 201220183812 patent/CN202717631U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102689988A (en) * | 2012-04-27 | 2012-09-26 | 湖北理工学院 | Carbon-oxygen combined regulatory denitrification system for horizontal underflow constructed wetlands |
| CN103739081A (en) * | 2014-01-13 | 2014-04-23 | 上海交通大学 | Subsurface flow wetland device for enhanced nitrogen removal of low-pollution water |
| CN103739081B (en) * | 2014-01-13 | 2015-10-14 | 上海交通大学 | A kind of current wetland device for low-pollution water strengthened denitrification |
| CN107151056A (en) * | 2017-06-27 | 2017-09-12 | 郑州大学环境技术咨询工程有限公司 | It is a kind of to strengthen the horizontal drowned flow artificial wet land system of denitrification |
| CN107998874A (en) * | 2017-12-19 | 2018-05-08 | 南京科技职业学院 | A kind of artificial swamp VOCs exhaust gas purifying methods and system |
| CN107998874B (en) * | 2017-12-19 | 2020-12-15 | 南京科技职业学院 | Constructed wetland VOCs waste gas purification method and system |
| CN115611398A (en) * | 2022-10-10 | 2023-01-17 | 浙江浙能镇海天然气发电有限责任公司 | Concentrated wastewater pool with low Ph false alarm frequency |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130206 Effective date of abandoning: 20140115 |
|
| RGAV | Abandon patent right to avoid regrant |