CN102249420A - Vertical undercurrent constructed wetland for treating polluted river water - Google Patents
Vertical undercurrent constructed wetland for treating polluted river water Download PDFInfo
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- CN102249420A CN102249420A CN2011101483053A CN201110148305A CN102249420A CN 102249420 A CN102249420 A CN 102249420A CN 2011101483053 A CN2011101483053 A CN 2011101483053A CN 201110148305 A CN201110148305 A CN 201110148305A CN 102249420 A CN102249420 A CN 102249420A
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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 vertical undercurrent constructed wetland for treating polluted river water. The constructed wetland comprises a reactor tank body (1), a reactor water feeding and distributing pipe (2), a filler sampling port (3), a perforated vertical standpipe (4), a water draining and collecting pipe (5), a water draining hose (6), a zeolite or furnace slag filler layer (7) and a gravel filler layer (8), wherein the water feeding and distributing pipe and the water draining and collecting pipe have consistent structures, and are symmetrical up and down to each other, so that the fluid state distribution of water flow in a reactor is uniform; the perforated vertical standpipe is arranged in a treating unit and is coated with 15-mesh bolting-silk; under different running conditions, the vertical standpipe can be used for optimizing the atmospheric oxygen supplying condition or preventing surface flow from being generated; the submerging depth in the reactor is adjusted by using the water draining hose according to the changes of the COD (Chemical Oxygen Demand), ammonia nitrogen content and nitrate nitrogen content of the river water, so that the nitrogen removing effect is improved; when COD and the nitrate nitrogen content of the river water are higher, the water draining hose is adjusted to make the reactor run at a high water level; when the content of the ammonia nitrogen in the river water is higher, the water draining hose is adjusted to run at a low water level; and a zeolite-gravel combined filler or a furnace slag-gravel combined filler is added into the treating unit, so that the treating effect is ensured, and furnace slag and zeolite particles are prevented from entering the water draining and collecting pipe and causing blockage simultaneously.
Description
Technical field
The invention belongs to technical field of sewage, be specifically related to a kind of vertical subsurface flow wetland of river of getting dirty that is used to handle.
Background technology
At present, China's trunk river organic contamination is general, and face source and point-source pollution become increasingly conspicuous.Polluted river water has the ammonia-nitrogen content height, simultaneously COD and the higher characteristics of total phosphorous.When total phosphorus concentration surpassed 0.1mg/l (if phosphorus is limiting factor) or total nitrogen concentration and surpasses 0.3mg/l (if nitrogen is limiting factor), algae can excessive breeding, and there is the risk of eutrophication in water body.
Artificial swamp is big as a kind of buffer capacity, technology is simple, reduced investment, sewage disposal technology that working cost is low, be widely used in processing primary live sewage, rainfall runoff, polluted river water and lake water, through the sanitary sewage after secondary or the tertiary treatment and the trade effluent of low concentration.Its mechanism of action comprises absorption, delay, filtration, redox, precipitation, microbiological degradation conversion, plant absorbing etc. substantially.The removal of SS is mainly by physical sedimentation, filteration in artificial swamp, and mainly by microorganism absorption and metabolism, the removal of N, P mainly utilizes biological denitrificaion and plant absorbing effect in the removal of BOD, COD.
The removal effect of SS and BOD is better in most of artificial wetland, and the clearance of nitrogen is lower, mainly is because traditional drowned flow artificial wet land can not provide good envrionment conditions to Microbial denitrogenation, and can not regulate envrionment conditions in the wetland according to change of water quality.The removal of nitrogen mainly relies on the nitrification and denitrification effect of microorganism in the artificial swamp, nitrobacteria need make ammonia nitrogen be converted into nitric nitrogen by nitration reaction under aerobic condition, and denitrifying bacterium need make nitric nitrogen be converted into nitrogen by denitrification under the competent condition of anaerobism, anoxic and carbon source.All can there be difference in COD, ammonia nitrogen, nitric nitrogen, the total phosphorous of polluted river or the same river river in different time sections of different regions, thereby need adjust running status according to the variation of quality of river water, with envrionment conditions in the change wetland, but do not have as yet at present by adjusting running status to adapt to the artificial wet land treating system that different rivers and quality of river water change.
Summary of the invention
The invention provides a kind of energy and adapt to the river of getting dirty, effectively remove COD, ammonia nitrogen and nitrate nitrogen, and change the adjustment running status to improve the vertical subsurface flow wetland sewage disposal technology of treatment effect according to quality of river water.
The present invention proposes is used to handle the vertical subsurface flow wetland of river of getting dirty, and mainly comprises casing, reactor water inlet water distributing pipe, filler thief hatch, vertical riser, water outlet header, delivery hose.It is characterized in that reactor water inlet water distribution employing king font perforation acrylic pipe, making into, the water current are evenly distributed.In processing unit inside the perforation vertical riser is set, the bottom is added a cover and with 15 mesh sieve thin,tough silk parcel, is guaranteed to prevent that tiny filler from entering blocking pipe when current pass through.When reactor than low water level operation the time, vertical riser can be used as atmosphere oxygen supply passage, makes inside reactor that competent oxygen be arranged, and guarantees good microorganism nitration reaction condition.When reactor when higher level is moved, vertical riser can guarantee that descending current are unobstructed, prevents the generation of surface current.When the longitudinal motion of water inlet current is obstructed, can enter vertical riser, and come back to the packing area than the zonule in base drag by transverse dispersion, can be when guaranteeing treatment effect so that water level maintains preset height.Outlet part tap flexible pipe by regulating the height of flexible pipe, is realized the free adjustment to water level in the processing unit.As COD in the river, when nitrate nitrogen content is higher, the delivery hose position is raised, make reactor be in the operation of higher level state, the denitrification condition in the enhanced reactor improves treatment effect.As COD in the river with nitrate nitrogen content is lower, when ammonia-nitrogen content is higher, delivery hose is lowerd, reactor is in than low water level operation, improve the nitrated environment in the reactor, improve the transformation efficiency of ammonia nitrogen.
Among the present invention, the filler in the vertical subsurface flow wetland processing unit adopts zeolite and gravel combination and slag and two kinds of patterns of gravel combination.Top, packing area is the zeolite filler layer of particle diameter 4-8mm or the slag filler layer (thickness 500mm) that particle diameter is 4-60mm, and the bottom is gravel filling layer (thickness 250mm).Wherein the gravel filling layer is divided into two-layerly from top to bottom, and top is the gravel (thickness 100mm) of particle diameter 30-50mm, and the bottom is the gravel (thickness 150mm) of particle diameter 50-70mm.
Former river at first by zeolite, slag filler layer, then enters the gravel filling layer from top to bottom by water inlet water distributing pipe inflow reactor, and its middle punch vertical riser bottom is placed on the gravel filling layer.The water outlet header is evenly distributed on reactor bottom, with water inlet water distributing pipe symmetry up and down, to guarantee the current filler of flowing through equably, reduces the generation of short stream and dead angle in the processing unit.Final outflow water is by the flexible pipe outflow reactor.
Innovative point of the present invention is:
1, in vertical subsurface flow wetland processing unit inside vertical riser is set, and makes filler be in different submerged conditions, to realize different processing capacities by regulating water level.When water level in the reactor was low, vertical riser was strengthened the interior required aerobic environment of microorganism nitration reaction of reactor as atmosphere oxygen supply passage; When water level is higher in the reactor, and vertical riser can improve the easy flow condition that stops up the zone, prevents the generation of surface current.
2, vertical subsurface flow wetland water outlet header of the present invention links to each other with flexible pipe, can realize the free adjustment of processing unit water level inside, to adapt to the get dirty processing requirements of river of different quality.When handling the higher river of COD and nitrate nitrogen content, raise flexible pipe water outlet position, reactor moves at high-water, and most of filler is in submerged condition, with intensified anti-nitrated effect; When handling the higher river of ammonia-nitrogen content, reduce flexible pipe water outlet even emptying operation, to guarantee higher ammonia nitrogen changing effect.
Description of drawings
Fig. 1 is a sectional view of the present invention.
Fig. 2 is an orthographic plan of the present invention.
Number in the figure: 1 reactor casing, 2 reactors water inlet water distributing pipe, 3 filler thief hatchs, 4 perforation vertical riser, 5 water outlet headers, 6 delivery hoses, 7 zeolites or slag filler layer, 8 gravel filling layers.
Embodiment
Below with reference to accompanying drawing the present invention is described in further details.
As shown in Figure 1, apparatus of the present invention mainly comprise reactor casing (1), reactor water inlet water distributing pipe (2), filler thief hatch (3), perforation vertical riser (4), water outlet header (5), delivery hose (6) zeolite or slag filler layer (7), gravel filling layer (8).The concrete size of reactor casing (1) wherein: length * wide * height is 1000mm * 500mm * 1000mm; Reactor water inlet water distributing pipe (2) uses the acrylic pipe, house steward's diameter 20mm wherein, and arm diameter 15mm, downward 45 degree of every interval 80mm are opened the 2mm circular hole on the arm; Filler thief hatch (3) diameter 150mm is sealed by flange; Vertical riser (4) is used diameter 30mm, length overall 750mm acrylic pipe, makes a call to two diameter 10mm holes along height every 70mm, outer wrap 15 mesh sieve thin,tough silk, and add a cover the bottom; Water outlet header (5) uses the acrylic pipe, house steward's diameter 25mm, and arm diameter 20mm, consistent, symmetrical up and down with water inlet water distributing pipe structure; Delivery hose (6) is the flexible metal conduit of diameter 25mm; Zeolite or slag filler layer (7) thickness 500mm; Gravel filling layer (8) thickness 250mm.
Embodiment 1
In above-mentioned vertical subsurface flow wetland waste disposal plant, particle diameter 4-8mm zeolite (thickness 500mm) is selected on processing unit top for use, and the bottom is gravel supporting layer (thickness 250mm).
The reactor influent quality is: COD
Cr100mg/L, NH
4 +-N 4mg/L, NO
3 --N 16mg/L, total phosphorus 1.5mg/L.The operational conditions that adopts is: water inlet continuously, and hydraulic detention time is 2.5d, and delivery hose is transferred to top water-level, the whole reactor filler floods operation.Treatment effect: COD
CrClearance 87.6%, ammonia nitrogen removal frank 91.1%, nitric nitrogen clearance 61.5%, total tp removal rate 66.2%.
The reactor influent quality is: COD
Cr100mg/L, NH
4 +-N 10mg/L, NO
3 --N 3mg/L, total phosphorus 1.5mg/L.The operational conditions that adopts is: water inlet continuously, hydraulic detention time is 2.5d, and delivery hose is transferred to lowest water level, the operation that falls through of whole reactor filler.Treatment effect: COD
CrClearance 80.0%, ammonia nitrogen removal frank 95.3%, nitric nitrogen clearance 0, total tp removal rate 77.9%.
In above-mentioned vertical subsurface flow wetland waste disposal plant, particle diameter 4-60mm slag (thickness 500mm) is selected on processing unit top for use, and the bottom is gravel supporting layer (thickness 250mm).
The reactor influent quality is: COD
Cr100mg/L, NH
4 +-N 4mg/L, NO
3 --N 16mg/L, total phosphorus 1.5mg/L.The operational conditions that adopts is: water inlet continuously, and hydraulic detention time is 2.5d, and delivery hose is transferred to top water-level, the whole reactor filler floods operation.Treatment effect: COD
CrClearance 98.8%, ammonia nitrogen removal frank 78.0%, nitric nitrogen clearance 67.8%, total tp removal rate 57.9%.
The reactor influent quality is: COD
Cr100mg/L, NH
4 +-N 10mg/L, NO
3 --N 3mg/L, total phosphorus 1.5mg/L.The operational conditions that adopts is: water inlet continuously, hydraulic detention time is 2.5d, and delivery hose is transferred to lowest water level, the operation that falls through of whole reactor filler.Treatment effect: COD
CrClearance 84.7%, ammonia nitrogen removal frank 69.7%, nitric nitrogen clearance 0, total tp removal rate 65.7%.
Claims (4)
1. one kind is used to handle the vertical subsurface flow wetland of river of getting dirty, and it is characterized in that: comprise casing (1), reactor water inlet water distributing pipe (2), filler thief hatch (3), perforation vertical riser (4), water outlet header (5), delivery hose (6), zeolite or slag filler layer (7), gravel filling layer (8).
Reactor casing (1) is a rectangular structure, and concrete size: length * wide * height is 1000mm * 500mm * 1000mm.The reactor water inlet successively by water inlet water distributing pipe (2), zeolite or slag filler layer (9), gravel filling layer (10), water outlet header (5), is finally flowed out by delivery hose from top to bottom.
2. a kind of vertical subsurface flow wetland of river of getting dirty that is used to handle as claimed in claim 1 is characterized in that into water water distributing pipe (2) uses the acrylic pipe, house steward's diameter 20mm, and arm diameter 15mm, downward 45 degree of every interval 80mm are opened the 2mm circular hole on the arm; Water outlet header (5) uses the acrylic pipe, house steward's diameter 25mm, and arm diameter 20mm, consistent, symmetrical up and down with water inlet water distributing pipe structure.
3. a kind of vertical subsurface flow wetland of river of getting dirty that is used to handle as claimed in claim 1 is characterized in that being provided with in the processing unit diameter 30mm perforation vertical riser (4), and height 750mm opens diameter 10mm circular hole along vertical separation 70mm.Outer wrap 15 mesh sieve thin,tough silk, add a cover the bottom, is placed on the gravel filling layer (8).
4. a kind of vertical subsurface flow wetland of river of getting dirty that is used to handle as claimed in claim 1 is characterized in that adjusting water tube hose (6) when COD in the river and nitrate nitrogen content are higher, and reactor is moved in higher level; When ammonia-nitrogen content is higher in the river, adjust water tube hose (6), make reactor at low water level operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101483053A CN102249420A (en) | 2011-06-03 | 2011-06-03 | Vertical undercurrent constructed wetland for treating polluted river water |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011101483053A CN102249420A (en) | 2011-06-03 | 2011-06-03 | Vertical undercurrent constructed wetland for treating polluted river water |
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| CN102249420A true CN102249420A (en) | 2011-11-23 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103274530A (en) * | 2013-06-19 | 2013-09-04 | 中国环境科学研究院 | Zonal vertical current artificial wetland system with reinforced denitrification function |
| CN103304029A (en) * | 2012-03-15 | 2013-09-18 | 中国科学院城市环境研究所 | Artificial soil infiltration system for treating rural distributed sewage |
| CN107892446A (en) * | 2017-12-20 | 2018-04-10 | 中国海洋大学 | Continuum micromeehanics regulating level vertical subsurface flow wetland device |
| CN111392868A (en) * | 2020-04-02 | 2020-07-10 | 曹艺凡 | Anti-blocking early warning system and method for constructed wetland |
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| US6740232B1 (en) * | 2002-05-01 | 2004-05-25 | Aquascape Designs, Inc. | Constructed wetlands system, treatment apparatus and method |
| CN1800055A (en) * | 2005-12-15 | 2006-07-12 | 徐祖信 | Modified artificial swamp sewage treatment method |
| CN2828027Y (en) * | 2005-09-02 | 2006-10-18 | 中国科学院沈阳应用生态研究所 | Underflow artificial wet land simulator |
| CN201121151Y (en) * | 2007-10-23 | 2008-09-24 | 中国水产科学研究院长江水产研究所 | Ventilation reinforced drowned flow artificial wet land |
| CN101575157A (en) * | 2009-06-12 | 2009-11-11 | 华南农业大学 | Method and system for treating sewage through composite tidal current artificial marsh |
| CN202214249U (en) * | 2011-06-03 | 2012-05-09 | 中国海洋大学 | Vertical underflow artificial wetland for treating polluted river water |
-
2011
- 2011-06-03 CN CN2011101483053A patent/CN102249420A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6740232B1 (en) * | 2002-05-01 | 2004-05-25 | Aquascape Designs, Inc. | Constructed wetlands system, treatment apparatus and method |
| CN2828027Y (en) * | 2005-09-02 | 2006-10-18 | 中国科学院沈阳应用生态研究所 | Underflow artificial wet land simulator |
| CN1800055A (en) * | 2005-12-15 | 2006-07-12 | 徐祖信 | Modified artificial swamp sewage treatment method |
| CN201121151Y (en) * | 2007-10-23 | 2008-09-24 | 中国水产科学研究院长江水产研究所 | Ventilation reinforced drowned flow artificial wet land |
| CN101575157A (en) * | 2009-06-12 | 2009-11-11 | 华南农业大学 | Method and system for treating sewage through composite tidal current artificial marsh |
| CN202214249U (en) * | 2011-06-03 | 2012-05-09 | 中国海洋大学 | Vertical underflow artificial wetland for treating polluted river water |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103304029A (en) * | 2012-03-15 | 2013-09-18 | 中国科学院城市环境研究所 | Artificial soil infiltration system for treating rural distributed sewage |
| CN103304029B (en) * | 2012-03-15 | 2015-08-12 | 中国科学院城市环境研究所 | A kind of Artificial soil infiltration system processing rural area decentralized type sewage |
| CN103274530A (en) * | 2013-06-19 | 2013-09-04 | 中国环境科学研究院 | Zonal vertical current artificial wetland system with reinforced denitrification function |
| CN103274530B (en) * | 2013-06-19 | 2014-04-09 | 中国环境科学研究院 | Zonal vertical current artificial wetland system with reinforced denitrification function |
| CN107892446A (en) * | 2017-12-20 | 2018-04-10 | 中国海洋大学 | Continuum micromeehanics regulating level vertical subsurface flow wetland device |
| CN111392868A (en) * | 2020-04-02 | 2020-07-10 | 曹艺凡 | Anti-blocking early warning system and method for constructed wetland |
| CN111392868B (en) * | 2020-04-02 | 2020-12-22 | 乐清市泰博恒电子科技有限公司 | Anti-blocking early warning system and method for constructed wetland |
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Application publication date: 20111123 |