CN101284699A - Micro-aeration vertical flow wetland sewage purification technology - Google Patents
Micro-aeration vertical flow wetland sewage purification technology Download PDFInfo
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- CN101284699A CN101284699A CNA2008100247846A CN200810024784A CN101284699A CN 101284699 A CN101284699 A CN 101284699A CN A2008100247846 A CNA2008100247846 A CN A2008100247846A CN 200810024784 A CN200810024784 A CN 200810024784A CN 101284699 A CN101284699 A CN 101284699A
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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 relates to a technology for purifying wastewater in micro-aeration vertical flow wetlands, and belongs to the water pollution control field. The technology adds a manual micro-aeration system in the conventional upwelling vertical downward flow wetlands, and adds channels for washing pipelines and outputting sediments at the bottom part of the wetland system, thereby improving the treatment capacity of the wetland system, having the functions of backwashing and sediment outputting, and prolonging the service life of the wetland. The technology can be independently utilized, and can also be combined with other wetlands by serving as an aerobic unit. The technology can be applied to the domestic sewage processing of villages, small towns and scenic spots, the wastewater treatment of a municipal sewage mixed stream entering a lake and the deep purification of tail water of a sewage treatment plant.
Description
(1) technical field
This technology belongs to the water pollution control field, the artificial swamp sewage purification system.Can be applicable to the sanitary sewage of villages and small towns, tourist attraction and be mixed with the stream entering lake sewage disposal of city domestic sewage, and the deep purifying of sewage treatment plant tail water.
(2) background technology
Artificial swamp is as a technology of water pollution control, this notion originated from from Europe from the sixties, obtained using widely and development all over the world, its form is also by initial single water-glass surface current wetland, develop at present based on current wetland and surface current wetland the water pollution control technology that multiple laying mode combines.But as other purification process, the artificial swamp technological merit is no doubt obvious, and shortcoming is outstanding too.When advantages such as everybody is low by its investment running cost, ecological security good, the scale suitability is strong attract, take up an area of wide, easily stop up, detergent power is limited and seasonal fluctuation is big etc., and shortcoming allows people usually it be hung back.Hydraulic load is mostly at 0.025-0.2m in the artificial swamp sewage treatment project that China is moving at present
3/ m
2.d between, COD
CrSurface load also has only 0.007-0.01kg/m
2.d
[1-3]And according to the investigation of EPA to more than 100 artificial swamps in service, the wet land system that half is nearly arranged has formed obstruction in after coming into operation 5 years
[4],
How to improve the processing power and the decontamination effect improving of wet land system, and prolong its work-ing life? many researchers find that low coefficient of oxygen utilization is the lower major cause of constitution wetland purification efficiency, under the anoxia condition, biology can not carry out normal aerobic repiration, and some element and the organic concentration of going back ortho states can reach deleterious level.Lower oxygen concn causes organic oxygenolysis speed reduction in the wet land system, and nitration reaction is not thorough, has limited the removal of wet land system nitrogen
[5-6], and the obstruction of wet land system is mostly because delay, the accumulation in wet land system of suspended substance in the sewage and organic matter causes
[7-8]And the deposition of bottom is the most outstanding, and is difficult to remove.Therefore the output channel of oxygen supply and foundation obstruction material is the key that improves the wet land system detergent power, increases the service life sufficiently.
This technological invention, by in traditional upwelling vertical subsurface flow wetland, having increased the artificial little aerating system of a cover, and bottom wet land system, increased pipe flushing and settling output gallery, can under less energy-consumption aeration situation, improve the processing power of wet land system, reached higher wastewater purifying efficiency, can utilize the souring of the blast air of moment by increasing aeration intensity again, make and stop up material or upwards flow out wetland filler, downwards, in the wetland bottom deposit; By settling output gallery, discharge wet land system, thereby can prolong the work-ing life of wetland greatly.This technology can be used separately, also can combine with other wet land system, realizes the decontamination effect improving of efficient stable.
This technology has been moved 18 months continuously in the wetland model of 8m3/d processing power, and having obtained utilization in " high loading artificial swamp sewage purification technology demonstration project " in north, Dian Chi, Kunming, Yunnan Province bank country 15 water special projects " Dian Chi ingoing river Pollution abatement technical study and engineering demonstration ", this engineering processing power is 4000m
3/ d now moves 9 months continuously, system stability, and operation is normal, and effect is remarkable.In the combined sewage of bank Lin Hu villages and small towns, north, Dian Chi and tourist attraction was handled, as core clean unit wherein, the principal pollutant clearance of micro-aeration vertical flow wetland had reached respectively: COD
Cr60.64%, NH4
+-N 85.6%, TP 30.88%, BOD
551.41%, SS 51.82%.NO
3-N has increased by 646 times, for next step denitrification denitrogenation, has created advantageous conditions.
(3) summary of the invention
The micro-aeration vertical flow sewage purification technology combines traditional vertical subsurface flow wetland with BAF, in the vertical subsurface flow wetland water inlet pipe, increased the low intensity aeration system, the processing power and the decontamination effect improving of wet land system had both been increased, can carry out air-water backwashing to wetland again, and be provided with pipe flushing and settling at the wetland bottom and collect gallery, sedimentary organic debris and suspended matter are entered storage basin by pipeline, thereby can prolong the work-ing life of wetland greatly.
(4) description of drawings
Marginal data is as follows:
| Sequence number | Title | | Title | |
| 1 | Aeration is responsible for | 6 | |
|
| 2 | The |
7 | The settling |
|
| 3 | |
8 | |
|
| 4 | Settling |
9 | The plant of planting on the |
|
| 5 | Effluent weir |
Deposit output gallery is supported by the brick beam of two rows, is convenient to deposit at top laying high-strength degree plastic grid and passes, and lays inlet channel on the grid, and conduit upper is evenly laid apopore.
(5) embodiment
Sewage flows into wetland from bottom to top uniformly by the water distributor (legend 3) of cloth ditch bottom wetland of micro-aeration vertical flow wetland, simultaneously pressurized air is by being laid in aeration tube (legend 1,2) in the water inlet pipe to the wet land system aeration aerating, improving oxidation operation decomposes and nitrification effect, settling output gallery (legend 4) is set below the water distributor, sedimentary organic debris and suspended matter are regularly discharged wetland by pipeline.The water distributor top is provided with washpipe (legend 6), according to the long-pending situation of the stasis of blood in the pipeline, regularly drives valve and washes away.To reduce the influence of bottom drift to wet land system, the water outlet of micro-aeration vertical flow wetland is collected back discharge system by weir (legend 5).This cover arts demand is regularly salvaged harvesting to intrasystem plant.
Bibliography:
1. Yin Wei, Ye Min, the thunder Allihn, the operating ratio of dissimilar artificial swamps is. people the Changjiang river, 2008.39 (2): p.60-62.
2. with beautiful duckweed, et al., Fuxian Lake horse material river artificial wet land water quality decontamination effect improving evaluation studies. environmental science guide, 2007.26 (1): p.58-61.
3. Chen Yun is true, Ye Jiliang, Shenzhen white clay hole, artificial swamp sewage-farm, wild goose field. environmental protection for electric power, 1996.12 (1).
4. in great waves, Wu Zhenbin, Xu Dong waits 1 subsurface constructed wetland to stop up mechanism and modeling thereof. environmental science and technology, 2006,29 (6)
5.Ouellet-Plamondon，C.，et?al.，Artificial?aeration?to?increase?pollutant?removal?efficiencyof?constructed?wetlands?in?cold?climate.Ecological?Engineering，2006.27：p.258-264.
6.Cottingham，P.D.，T.H.Davies，and?B.T.Hart，Aeration?to?promote?nitrification?inconstructed?wetland.Environ.Technol.，1999.20：p.69-75.
7. Zhan De sky, Wu Zhenbin, Xu Guang comes, and composite vertical current makes up organic matter accumulation and matrix obstruction in the wetland. China Environmental Science, 2003.23 (5): p.457-461.
8. Li Xue is beautiful, the He Shu village, and Yang Haihua, artificial swamp stops up mechanism and modeled progress thereof. environmental science guide, 2008.27 (1): p.1-4.
Claims (1)
- Easily stop up at artificial swamp, the shortcoming that detergent power is low and seasonal fluctuation is big, the micro-aeration vertical flow wetland sewage purification technology of exploitation is by having increased the artificial little aerating system of a cover in traditional upwelling vertical subsurface flow wetland, and increased pipe flushing and settling output gallery in wet land system bottom, can be under less energy-consumption aeration situation, improve the processing power of wet land system, reached higher wastewater purifying efficiency, again can be by increasing aeration intensity, utilize the souring of the blast air of moment to filler, make and stop up material and matrix disengaging, in the wetland bottom deposit; By settling output gallery, discharge wet land system, thereby can prolong the work-ing life of wetland greatly.This technology can be used separately, also can combine with other wet land system, realizes the decontamination effect improving of efficient stable.Have in asking for protection:1, " micro-aeration vertical flow wetland " topology layoutIn water distributor, lay aeration tube, for wetland carries out artificial oxygenation; Settling output gallery is set in the wetland bottom simultaneously, settling is collected the back discharge wet land system.2, " micro-aeration vertical flow wetland " operation schemeFor vertical-flow wetland carries out artificial oxygenation, to washing, settling can be collected output to water distributor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100247846A CN101284699A (en) | 2008-05-14 | 2008-05-14 | Micro-aeration vertical flow wetland sewage purification technology |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100247846A CN101284699A (en) | 2008-05-14 | 2008-05-14 | Micro-aeration vertical flow wetland sewage purification technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101284699A true CN101284699A (en) | 2008-10-15 |
Family
ID=40057145
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| CNA2008100247846A Pending CN101284699A (en) | 2008-05-14 | 2008-05-14 | Micro-aeration vertical flow wetland sewage purification technology |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102126791A (en) * | 2011-01-30 | 2011-07-20 | 河海大学 | Anti-plugging method and device of constructed wetland |
| CN101704585B (en) * | 2009-11-06 | 2011-07-27 | 山东大学 | Progressively reduced aeration subsurface constructed wetland |
| CN102040283B (en) * | 2009-10-21 | 2012-08-29 | 中国环境科学研究院 | Oligodynamic courtyard type landscaped treating device for rural domestic sewage through artificial wetland |
| CN102992500A (en) * | 2012-12-10 | 2013-03-27 | 中国科学院南京地理与湖泊研究所 | Aeration oxygenation method of bottom layer of vertical flow artificial wetland |
| CN101525182B (en) * | 2009-04-03 | 2013-06-12 | 江苏三鑫生态环境工程有限公司 | Clogging-prevention horizontal-flow wetland and waste water treatment method |
| CN101525181B (en) * | 2009-04-03 | 2013-07-24 | 江苏三鑫生态环境工程有限公司 | Clogging-prevention vertical-flow wetland and waste water treatment method |
| CN106946354A (en) * | 2017-05-17 | 2017-07-14 | 中机国际环保科技有限公司 | A kind of cesspool sewage end-o f-pipe -control device |
| CN107459139A (en) * | 2017-08-25 | 2017-12-12 | 浙江省环境保护科学设计研究院 | A kind of modularized artificial wetland integrating device and the method for handling sewage |
| CN108609736A (en) * | 2018-05-18 | 2018-10-02 | 中国科学院南京地理与湖泊研究所 | A kind of horizontal flow artificial wetland anti-clogging purifier |
| CN111777189A (en) * | 2020-07-24 | 2020-10-16 | 江南大学 | Aeration coupling artificial wetland system and application thereof |
| CN114349169A (en) * | 2021-12-28 | 2022-04-15 | 清上(苏州)环境科技有限公司 | Artificial wetland sewage treatment method |
-
2008
- 2008-05-14 CN CNA2008100247846A patent/CN101284699A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101525181B (en) * | 2009-04-03 | 2013-07-24 | 江苏三鑫生态环境工程有限公司 | Clogging-prevention vertical-flow wetland and waste water treatment method |
| CN101525182B (en) * | 2009-04-03 | 2013-06-12 | 江苏三鑫生态环境工程有限公司 | Clogging-prevention horizontal-flow wetland and waste water treatment method |
| CN102040283B (en) * | 2009-10-21 | 2012-08-29 | 中国环境科学研究院 | Oligodynamic courtyard type landscaped treating device for rural domestic sewage through artificial wetland |
| CN101704585B (en) * | 2009-11-06 | 2011-07-27 | 山东大学 | Progressively reduced aeration subsurface constructed wetland |
| CN102126791A (en) * | 2011-01-30 | 2011-07-20 | 河海大学 | Anti-plugging method and device of constructed wetland |
| CN102992500B (en) * | 2012-12-10 | 2014-10-29 | 中国科学院南京地理与湖泊研究所 | Aeration oxygenation method of bottom layer of vertical flow artificial wetland |
| CN102992500A (en) * | 2012-12-10 | 2013-03-27 | 中国科学院南京地理与湖泊研究所 | Aeration oxygenation method of bottom layer of vertical flow artificial wetland |
| CN106946354A (en) * | 2017-05-17 | 2017-07-14 | 中机国际环保科技有限公司 | A kind of cesspool sewage end-o f-pipe -control device |
| CN106946354B (en) * | 2017-05-17 | 2022-11-29 | 中机国际环保科技有限公司 | Septic tank sewage end treatment device |
| CN107459139A (en) * | 2017-08-25 | 2017-12-12 | 浙江省环境保护科学设计研究院 | A kind of modularized artificial wetland integrating device and the method for handling sewage |
| CN108609736A (en) * | 2018-05-18 | 2018-10-02 | 中国科学院南京地理与湖泊研究所 | A kind of horizontal flow artificial wetland anti-clogging purifier |
| CN111777189A (en) * | 2020-07-24 | 2020-10-16 | 江南大学 | Aeration coupling artificial wetland system and application thereof |
| CN114349169A (en) * | 2021-12-28 | 2022-04-15 | 清上(苏州)环境科技有限公司 | Artificial wetland sewage treatment method |
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Open date: 20081015 |