CN105776553A - High-load constructed wetland rector based on light stuffing - Google Patents
High-load constructed wetland rector based on light stuffing Download PDFInfo
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- CN105776553A CN105776553A CN201610175146.9A CN201610175146A CN105776553A CN 105776553 A CN105776553 A CN 105776553A CN 201610175146 A CN201610175146 A CN 201610175146A CN 105776553 A CN105776553 A CN 105776553A
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- Prior art keywords
- wetland
- plant
- light filler
- load
- stuffing
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
-
- 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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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Microbiology (AREA)
- Water Supply & Treatment (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Biodiversity & Conservation Biology (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Biotechnology (AREA)
- Botany (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
The invention discloses a high-load constructed wetland reactor based on light stuffing. The high-load constructed wetland reactor is used for deeply processing tail water of an urban sewage plant and is provided with a gravel stuffing layer, a light stuffing layer and a modularized wetland plant planting system from bottom to up; the light stuffing is of a net-fiber porous structure, large in specific surface area, high in porosity and good in biological affinity, can obviously improve the amount of microorganisms on a wetland stuffing carrier and can improve the removal efficiency of pollutant in sewage; the modularized wetland plant planting system uses the light stuffing as a supporting carrier for planting wetland plants, the light stuffing is compressed and then arranged in a hollow concrete plant planting module, and the light stuffing is high in porosity and better in ventilation and water permeability and can facilitate growth of plant roots; the system can be assembled and disassembled at will and brings convenience to maintenance, renovation and landscape design of a constructed wetland. The reactor has the advantages of being low in cost, low in requirement for a civil structure, short in starting time, high in processing load, small in occupancy, convenient to operate and maintain and good in landscape effect.
Description
Technical field
The invention belongs to sewage disposal, environmental protection technical field, be specifically related to constructed wetland reactor.
Background technology
At present, it is directly discharged in natural water after town sewage treated factory and office reason, but owing in town sewage plant tail water, nitrogen pollutant concentration is still higher, it still has bigger gap relative to surface water environment standard, when Tail water reuse to closing, the slow flow water bodies such as semiclosed time, it is easy to cause the environmental problems such as body eutrophication.How sewage treatment plant tail water is carried out low-cost high-efficiency process, alleviate water pollutional load further, it has also become problem demanding prompt solution.
In recent years, Artificial Wetland Techniques for sewage treatment plant tail water advanced treating quickly grows, such as Chinese patent literature successively disclosed CN102491585A " a kind of combined method removing tail water produced by municipal sewage treatment plant nitrate nitrogen ", CN101412564A " a kind of wet land technique for deep purification of tail water of sewage plant " etc..Above-mentioned reactor is for reaching advanced treating usefulness, and its technological process is longer, and structure is complex, and wetland material is based on sandstone, and on sandstone carrier, microbial biomass is few, and contaminant removal efficiency is low, and wetland floor space is big, investment height.
Summary of the invention
The deficiency that technique exists is processed for existing urban wastewater treatment firm Tailwater Depth, the present invention provides a kind of high-load artificial wetland reactor based on light filler, light filler is adopted to replace the sandstone substrate of existing artificial swamp, the microbial biomass on wet land filler carrier can be dramatically increased, improve contaminant removal efficiency in sewage, to reach the purpose of simplification process technique, enhancing reactor treatment efficiency, minimizing investment, operating cost and occupation of land.
The technical scheme realizing the object of the invention is as follows:
A kind of high-load artificial wetland reactor based on light filler, including cell body, is arranged on the water inlet pipe on cell body, outlet pipe and chemical feed pipe, is arranged on the water distributor in cell body；It is characterized in that, in cell body, be provided with pebblepacking layer, light filler layer and modularity wetland plant implant system from bottom to top.
The supporting layer of described cell body uses pebblepacking, and intermediate layer uses light filler, and top layer uses modularity wetland plant implant system, and pebblepacking layer is to be made up of the cobble material that particle diameter is 30 ~ 40mm, and its thickness is 100mm.Light filler layer is to be made up of the light filler of reticular fiber loose structure, and its thickness is 700 ~ 1900mm.The modularity wetland plant implant system on described top layer is support carrier light filler planted as wetland plant, and compacting is placed in concrete module for planting plant, and its thickness is 200 ~ 300mm.
The light filler that the present invention adopts is reticular fiber porous fibrous material, its specific surface area is big, porosity is high, bioaffinity is good, when sewage treatment plant tail water is by described light filler layer, filler retains the float in tail water, and the polluter in tail water is adsorbed on filling surface, and forms large number of biological film at filling surface.The microorganism being enriched in filling surface makes it be degraded using the polluter in tail water as substrate, makes tail water be purified.
The modularity wetland plant implant system on top layer of the present invention is for during with light filler for medium carrier, and wetland plant easily lodges underbraced and the technology that proposes.Hollow concrete module for planting plant length and width is 400mm ~ 600mm, highly for 200mm ~ 300mm, by light filler being compacted in hollow module for planting plant, and plant wetland plant wherein.Light filler porosity height has good ventilative water permeability, is conducive to the growth of root system of plant, and a part of nitrogen in sewage treatment plant tail water, phosphorus are absorbed by wetland plant, so that tail water is purified.This system is modularity, it is possible to arbitrarily group joins dismounting, it is simple to the maintenance trimming of artificial swamp and landscape design.
The polluter that the present invention processes is based on nitrate nitrogen, and its degradation process is mainly denitrification denitrogenation.In order to realize this process, wetland is in operation, and need to add sodium acetate and make into water carbon-nitrogen ratio C/N to be 6:1 in tail water, and the hydraulic detention time of wetland is 2 ~ 5h, COD load is 550 ~ 970g/m2D, TN load is 70 ~ 120g/m2During d, effluent quality reaches surface water V class water quality standard.
The benefit of the present invention is:
1. treatment efficiency is high
This reactor has the light filler of reticular fiber loose structure owing to adopting, and its specific surface area is big, and bioaffinity is good, can significantly improve the microbial biomass on filling carrier, improves contaminant removal efficiency in sewage.Meanwhile, the further dephosphorization denitrogenation of wetland plant, and by the filtration of wet land filler, it is ensured that reactor obtains higher treatment efficiency, significantly reduces the floor space of wetland.
2. investment is low, floor space is little
The relatively conventional sandstone packing quality of described light filler is light, it is possible to increase the degree of depth of wetland, the requirement of wetland civil engineering structure is reduced, it is only necessary to rammed earth overlay film simultaneously, greatly reduces investment and the floor space of reactor.
3. operation maintenance is convenient
The relatively conventional sandstone filler aperture of described light filler is big, is not easily blocked.Top layer adopts modularity wetland plant implant system, owing to light filler has good ventilative water permeability, it is therefore prevented that the bad root phenomenon of wetland plant, plant survival rate is higher, and this system can arbitrarily dismount combination, only need after surficial modules dismounting when artificial swamp need to change filler.Only need after changing module replacing when part of module plant is withered or dead.
4. ecoscape is respond well
Hollow concrete module for planting plant according to landscape design requirement, can be spelled and form variously-shaped and figure, beautify view.
In sum, reactor of the present invention has the advantages such as with low cost, civil engineering structure requirement is low, the startup time is short, process load height, floor space is little, operation maintenance is easy, landscape effect is good.
Accompanying drawing explanation
Fig. 1: based on the plane graph of the high-load artificial wetland reactor of light filler；
The A-A profile of Fig. 2: Fig. 1；
Fig. 3: based on the horizontal layout schematic diagram of the high-load artificial wetland reactor wetland plant of light filler；
Fig. 4: the plane graph of modularity wetland plant implant system；
The B-B profile of Fig. 5: Fig. 3.
Detailed description of the invention
Structure and the running of the present invention is further illustrated below in conjunction with accompanying drawing:
Referring to Fig. 1, Fig. 2 and Fig. 3, this sewage-treating reactor includes cell body 1, water inlet pipe 2, water distributor 3, outlet pipe 4, chemical feed pipe 5, pebblepacking layer 6, light filler layer 7, modularity wetland plant implant system 8 etc..
Water inlet pipe 2, outlet pipe 4 and chemical feed pipe 5 are all disposed within the suitable position on cell body, and water distributor 3 is arranged on cell body inner bottom part.Pebblepacking layer 6, light filler layer 7 and modularity wetland plant implant system 8 it is provided with from bottom to top in cell body.
The light filler that light filler layer 7 adopts is reticular fiber porous material, and the thickness of light filler layer 7 is 700 ~ 1900mm；
Referring to Fig. 4 and Tu, 5, modularity wetland plant implant system 8 is support carrier light filler planted as wetland plant, and compacting is placed in hollow concrete module for planting plant, and thickness is 200mm ~ 300mm.Hollow concrete module for planting plant length and width is 400mm ~ 600mm, highly for 200mm ~ 300mm.Wetland plant absorption portion compound fertilizer, so that pollutant are removed.Hollow concrete module for planting plant according to landscape design requirement, can be spelled and form various figures, beautify view.
When reactor runs, sewage treatment plant tail water is after water inlet pipe 1 mixes with the carbon source in chemical feed pipe 5, high-load artificial wetland cell body 1 is entered by water distributor 3, vertically pass sequentially through pebblepacking layer 6, light filler layer 7, modularity wetland plant implant system 8, finally entered receiving water body by outlet pipe 4.This method removes the pollutant such as nitrogen, phosphorus by multiple actions such as the denitrifications of microorganism in the absorption of root system of plant, the absorption of wet land filler, wetland.In this stage, microorganism utilizes the carbon source added to realize the efficient denitrification of TN.
Above high-load artificial wetland be in operation need to add in tail water sodium acetate make into water carbon-nitrogen ratio (C/N) than be 6:1, by run, when the hydraulic detention time of wetland is 2 ~ 5h, COD load is 550 ~ 970g/m2D, TN load is 70 ~ 120g/m2During d, effluent quality reaches surface water V class water quality standard.
Claims (2)
1., based on a high-load artificial wetland reactor for light filler, including cell body (1), it is arranged on the water inlet pipe (2) on cell body, outlet pipe (4) and chemical feed pipe (5), is arranged on the water distributor (3) in cell body；It is characterized in that, in cell body, be provided with pebblepacking layer (6), light filler layer (7) and modularity wetland plant implant system (8) from bottom to top；
The light filler that described light filler layer (7) adopts is reticular fiber porous material, and the thickness of light filler layer (7) is 700 ~ 1900mm；
Described modularity wetland plant implant system (8) is support carrier light filler planted as wetland plant, and compacting is placed in hollow concrete module for planting plant, and thickness is 200mm ~ 300mm.
2. the high-load artificial wetland reactor based on light filler according to claim 1, it is characterized in that: described high-load artificial wetland be in operation need to add in tail water sodium acetate make into water carbon-nitrogen ratio C/N be 6:1, the hydraulic detention time of wetland is 2 ~ 5h, COD load is 550 ~ 970g/m2D, TN load is 70 ~ 120g/m2During d, effluent quality reaches surface water V class water quality standard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610175146.9A CN105776553A (en) | 2016-03-25 | 2016-03-25 | High-load constructed wetland rector based on light stuffing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610175146.9A CN105776553A (en) | 2016-03-25 | 2016-03-25 | High-load constructed wetland rector based on light stuffing |
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| CN105776553A true CN105776553A (en) | 2016-07-20 |
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| CN201610175146.9A Pending CN105776553A (en) | 2016-03-25 | 2016-03-25 | High-load constructed wetland rector based on light stuffing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106430600A (en) * | 2016-10-26 | 2017-02-22 | 青岛大学 | Sewage treatment system convenient to maintain based on constructed wetlands |
Citations (8)
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| CN200974788Y (en) * | 2006-12-08 | 2007-11-14 | 华中科技大学 | Filler modularized artificial marshland |
| KR100796555B1 (en) * | 2006-07-27 | 2008-01-21 | (주)에코원 | Planting structure for water-treatnent and artiricial marsh using thereof |
| CN102211818A (en) * | 2010-04-02 | 2011-10-12 | 温州医学院 | Improved design method of horizontal subsurface flow wetland for coping with substrate clogging |
| CN102603077A (en) * | 2012-03-28 | 2012-07-25 | 王启明 | Modularized detachable constructed wetland |
| CN102775017A (en) * | 2012-07-25 | 2012-11-14 | 华东师范大学 | AquaMats ecological water purifying tank for upright shore zone in city |
| CN103755034A (en) * | 2014-01-20 | 2014-04-30 | 上海同瑞环保科技有限公司 | Novel anti-blockage constructed wetland and use method thereof |
| CN104944589A (en) * | 2015-06-24 | 2015-09-30 | 成都理工大学 | Modularized detachable artificial wetland |
| CN204939090U (en) * | 2015-07-07 | 2016-01-06 | 北京市工业设计研究院 | A kind of small-sized detachable module formula artificial wet land system |
-
2016
- 2016-03-25 CN CN201610175146.9A patent/CN105776553A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100796555B1 (en) * | 2006-07-27 | 2008-01-21 | (주)에코원 | Planting structure for water-treatnent and artiricial marsh using thereof |
| CN200974788Y (en) * | 2006-12-08 | 2007-11-14 | 华中科技大学 | Filler modularized artificial marshland |
| CN102211818A (en) * | 2010-04-02 | 2011-10-12 | 温州医学院 | Improved design method of horizontal subsurface flow wetland for coping with substrate clogging |
| CN102603077A (en) * | 2012-03-28 | 2012-07-25 | 王启明 | Modularized detachable constructed wetland |
| CN102775017A (en) * | 2012-07-25 | 2012-11-14 | 华东师范大学 | AquaMats ecological water purifying tank for upright shore zone in city |
| CN103755034A (en) * | 2014-01-20 | 2014-04-30 | 上海同瑞环保科技有限公司 | Novel anti-blockage constructed wetland and use method thereof |
| CN104944589A (en) * | 2015-06-24 | 2015-09-30 | 成都理工大学 | Modularized detachable artificial wetland |
| CN204939090U (en) * | 2015-07-07 | 2016-01-06 | 北京市工业设计研究院 | A kind of small-sized detachable module formula artificial wet land system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106430600A (en) * | 2016-10-26 | 2017-02-22 | 青岛大学 | Sewage treatment system convenient to maintain based on constructed wetlands |
| CN106430600B (en) * | 2016-10-26 | 2019-12-24 | 青岛大学 | Constructed wetland based sewage treatment system convenient to maintain |
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Application publication date: 20160720 |