CN102351316A - Green belt drainage channel artificial wetland device for treating rainfall runoff pollution of road - Google Patents
Green belt drainage channel artificial wetland device for treating rainfall runoff pollution of road Download PDFInfo
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- CN102351316A CN102351316A CN2011102561670A CN201110256167A CN102351316A CN 102351316 A CN102351316 A CN 102351316A CN 2011102561670 A CN2011102561670 A CN 2011102561670A CN 201110256167 A CN201110256167 A CN 201110256167A CN 102351316 A CN102351316 A CN 102351316A
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Abstract
The invention discloses a green belt drainage channel artificial wetland device for treating rainfall runoff pollution of a road. The device comprises a tank body, a packing layer and a wetland plant which is planted on the surface layer of the packing layer, wherein a water collection tank is formed at the bottom of the tank body; the packing layer is arranged on the upper part of the water collection tank in the tank body; the water collection tank and the packing layer are partitioned from each other through a perforated filter board; a gravel layer, a sandy soil layer, a blast furnace slag and lime stone mixing layer, a fine stone layer and a rubble layer are arranged on the packing layer sequentially from top to bottom; a perforated water distribution pipe is arranged on the surface layer of the packing layer; and a filter screen is arranged at a water inlet of the perforated water distribution pipe. The wetland device has multiple functions such as a screen belt landscape function, a grass planting drainage channel drainage and decontamination function, a vertical downstream wetland treating function, a stored water and rain water recycling function and the like; and a wetland tank body is used as a green belt tank body and a drainage channel tank body simultaneously, so that the device saves the floor area of an individual building, reduces construction working amount and has lower economic input.
Description
Technical field
The invention belongs to technical field of sewage, be specifically related to a kind of green belt waterways constructed wetland device that the highway rainfall runoff pollutes of handling.
Background technology
In recent years; Highway has obtained develop rapidly as the Infrastructure of focusing the consruction in the national development strategy; By the end of the year 2009; Whole nation highway total kilometrage number reaches 3,860,000 kilometers, occupies the second in the world, and the water environment pollution that the highway rainfall runoff causes is prevented and treated problem becomes one of major issue of China's environmental pollution prevention and control thereupon.The highway rainfall runoff is meant rain (snow) water of road surface overflow; Its a large amount of organic and inorganic pollutant of road surface accumulation that can dissolve, washes away and migrate; The time that adds generation is gone up discontinuous discharge sites dispersion; And change with climatic conditions change, be considered to an important non-point pollution source.Highway runoff pollution owner will comprise heavy metal, solid particulate matter, organism (grease, PAHs, nutrition, agrochemical) and inorganics etc.; It is various to have the pollutent class, and part pollutent such as heavy metal and polycyclic aromatic hydrocarbons (PAHs) etc. have the characteristics of intensive gene and eco-toxicity effect.Done the city of second-stage treatment at some point-source pollutions, take in water body mesophytization oxygen requirement year load 40%～80% from pavement runoff, between storm period, this ratio even up to 95%.It is very big that the highway rainfall runoff pollutes potentiality, the environment sensitive district water quality of closing on caused tangible destruction, and influenced the aquatic ecological environment, the highway rainfall runoff polluted control water environment protection is had meaning of crucial importance.
Pollute at the highway rainfall runoff at present pollution control measures such as afforestation vegetation control, delaying basin, oxidation pond, artificial swamp and filtration system are arranged.Afforestation vegetation control can divide overland flow and grass planting irrigation canals and ditches, can combine the roadside green belt to build but processing efficiency is lower, and will the be up to state standards floor space of needs of water outlet is bigger; The oxidation pond processing efficiency is lower, and floor space is bigger; Filtration system is limited in one's ability to the removal of nitrogen, phosphor contaminant; Delaying basin can not be realized afforestation effect simultaneously and need to build separately the treatment system device, need take up an area of, build the fund input problem of higher in addition.Artificial swamp has that low investment, effluent quality are good, strong shock resistance, simple to operate, construction and working cost are low, easy to maintenance, can make WWT and environmental ecology construction organically combine, when disposing of sewage, create advantages such as ecoscape, pollute handle in use more.But; After artificial swamp is handled main employing pipeline collection device collection road surface rainfall runoff at present; Carrying out end through the artificial swamp treatment unit of building separately again handles; Need build collection device and facility for the central disposal separately equally; Also exist floor space big with problem such as construction funds invested height, simultaneously to highway rainfall runoff suspension content height, biodegradability is poor, heavy metal content is high, have pollution characteristic such as hazardous contaminant matter such as polycyclic aromatic hydrocarbons and the practicable artificial wetland treatment process that designs.
Summary of the invention
The objective of the invention is to overcome build separately in the existing artificial swamp treatment technology and wetland bedly wait that the facility floor space is big, economical to drop into high, hydraulic load and pollution load is lower, matrix is single, floristics is on the low side, the highway rainfall runoff pollutes weak points such as the characteristic specific aim is not strong, the landscape artificial wetland system that merges mutually with roadside green belt and waterways facility that being used to of providing that little, the economic less investment of a kind of floor space, hydraulic load and pollution load are high, matrix is with strong points, floristics is abundant, treatment effect is good handled the highway rainfall runoff.
The object of the invention realizes through following technical scheme:
A kind of green belt waterways constructed wetland device of handling the pollution of highway rainfall runoff; Comprise pond body, packing layer and plant in the wetland plant on filler top layer; The bottom of said pond body is provided with water leg; Said packing layer places the top of water leg in the body of pond, cuts apart through the perforation screen plate between water leg and the packing layer; Said packing layer is followed successively by gravel bed, sandy soil layer, blast furnace slag and Wingdale mixolimnion, microlith layer and rubble layer from top to bottom; The top layer of said packing layer is provided with the perforation water distributing pipe, and the water-in of perforation water distributing pipe is provided with filtering net.
Preferably, this device also comprises the wall of cutting apart that the pond body is separated into a plurality of unit bed, and said pond height is in the top layer of packing layer, saidly cuts apart the height that wall exceeds the packing layer top layer and exceeds 1/3 of filler top layer height for the pond body, cuts apart the wall bottom and is right after the perforation screen plate.
Preferably, the thickness of said gravel bed, sandy soil layer, blast furnace slag and Wingdale mixolimnion, microlith layer and rubble layer is respectively 5～10cm, 10～50cm, 20～60cm, 3～10cm, 10～30cm.
Preferably, said gravel particle diameter is 10～15mm, and the blast furnace slag particle diameter is 8～15mm, and limestone particle size is 8～15mm, and microlith layer particle diameter is 15～20mm, and rubble layer particle diameter is 20～30mm.
Preferably, the said groove width of catchmenting be packing layer wide 1/3～1/5, be 1/3～1/5 of bed stuffing height highly, be connected with water shoot straight up on the water leg, water shoot is provided with water port, the maximum height of water port is 2/5～4/5 of a pond height.
Preferably, the aperture 10～15mm of said perforation screen plate, angle of inclination 0～30 degree.
Preferably, the long-width ratio of said unit bed is 2: 2～4: 1, highly is 0.5～2.0m.
Preferably; Said wetland plant be cogongrass or LUBIANJU with reed, Canna generalis Bailey, FENGCHECAO, calamus and spring taro in one or more mix (be cogongrass and LUBIANJU select one with several kinds of mixed plantings in back); The habitat that adapts to arid and ponding is fit to Chinese most of areas, and better to the degradation effect of nitrogen, phosphorus; Wetland plant with certain heavy metal removal effect, average planting density is 5～50 strains/m
2
Preferably, said perforation water distributing pipe adopts " king " font to distribute, and the water distribution area of the single water outlet of water distributing pipe is 0.15～1.0m
2, water outlet diameter 8～10mm.
Said highway rainfall runoff pollutes for rainfall runoff and washes away the water pollution that contaminated rain water runoff that highway pavement forms causes.Utilize the artificial wetland device of the present invention to handle the method that the highway rainfall runoff pollutes, may further comprise the steps:
(1) highway rainfall runoff sewage is at first removed big suspended substance through filtering net, gets into the perforation water distributing pipe;
(2) get into described green belt waterways landscape artificial wetland system along water distribution rainfall pipe again; The training wall of green belt waterways landscape artificial wetland is divided into a plurality of unit bed with the wet land filler bed; General rainfall sight current flow to water leg along wetland under vertical; Early-stage rainwater vertically down flow to water leg along wetland during strong rainstorms, and the later stage rainwater moves along wetland surface drainage ditch horizontal flow.
Main points of the present invention are: this green belt waterways landscape artificial wetland system ontology fills in pond style such as the organic Glass Containers; Employing to the suspended substance filtration efficiency than higher; Better to nitrogen, phosphorus removal effect, the blast furnace slag and the Wingdale that heavy metal are had absorption property are that filler staple (account for more than 40% of filler TV, add common artificial swamp fillers such as sandy soil, rubble simultaneously) substitutes gravel packed bed body; Different gradation configuration according to each filler; The porosity of a body is improved, prevent the blockage problem of wetland when improving power efficiency, realize the infiltration downwards fast of sewage again.Training wall is set in the bed of packings, through training wall if must pollute more serious early-stage rainwater and partly be detained to get off, flow into wetland under current are vertical, early-stage rainwater is carried out advanced treatment; The stormwater overflow of later stage excess flows along the wetland horizontal direction, and the superelevation overflow of training wall is arranged so that the suspended substance ST shortens in the horizontal direction flowing water flow, strengthens the wetland plant filter effect, has improved wetland bed utilising efficiency.If water leg and water-freeing arrangement realize that rainwater is collected and storage; Wetland plant is selected nitrogen, phosphorus removal effect better, cogongrass or the LUBIANJU with heavy metal assimilation effect and reed, Canna generalis Bailey, FENGCHECAO, calamus and the spring taro one or more mix.
Compared with prior art, the present invention has the following advantages:
(1) this wetland has green belt landscape function, grass planting waterways draining dirt-removing functions, vertical downstream wetland processing capacity and water storage Rainwater Resources simultaneously and utilizes multi-functionals such as function; Wetland pond body is green belt and pond, waterways body simultaneously; Practiced thrift the floor space of independent construction; Reduced construction, the economic input still less.
(2) initial stage that the is arranged so that runoff rainwater of training wall is different with the water flow mode of later stage rainwater, has realized with serious pollution water quality advanced processing, pollutes generally effect fast of lighter water quality, has improved the processing efficiency of wetland.
(3) adopt the blast furnace slag of high porosity and matrix such as Wingdale, rubble to substitute traditional gravel filling, both improved wetland bed porosity, improved clearance again nitrogen, phosphorus, heavy metal and polycyclic aromatic hydrocarbons.
(4) adopt cogongrass or LUBIANJU and reed, Canna generalis Bailey, FENGCHECAO, calamus and the spring taro one or more mix, to surperficial the washing away of wetland, improved the removal efficient of all contaminations simultaneously when having reduced the sewage horizontal flow.
Description of drawings
Fig. 1 handles the schema that the highway rainfall runoff pollutes for the artificial wetland device of the present invention;
Fig. 2 is the horizontal section synoptic diagram of the artificial wetland device of the present invention;
Fig. 3 is the longitudinal profile synoptic diagram of the artificial wetland device of the present invention;
Fig. 4 is the floor map of the artificial wetland device of the present invention.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail.
The artificial wetland device of the present invention is handled the method that the highway rainfall runoff pollutes, and as shown in Figure 1, rainfall runoff is removed suspended substance bigger in the rainwater at first through filtering net, gets into green belt waterways landscape artificial wetland bed along the perforation water distributing pipe again.
In the present embodiment; A kind of green belt waterways constructed wetland device of handling the pollution of highway rainfall runoff; Comprise pond body 1, packing layer, plant in the wetland plant on filler top layer with what pond body 1 was separated into a plurality of unit bed and cut apart wall 6; The bottom of pond body 1 is provided with water leg 9, and said packing layer places the top of water leg 9 in the pond body 1, cuts apart through perforation screen plate 13 between water leg 9 and the packing layer; Said packing layer is followed successively by 6cm gravel bed 12,20cm sandy soil layer 3,50cm blast furnace slag and Wingdale mixolimnion 4,4cm microlith layer 5 and 20cm rubble layer 8 from top to bottom; Said gravel particle diameter is 15mm, and the blast furnace slag particle diameter is 15mm, and limestone particle size is 15mm, and microlith layer particle diameter is 20mm, and rubble layer particle diameter is 30mm.Said pond body 1 is higher than packing layer top layer 30cm, and said to cut apart the height that wall exceeds the filler top layer be 10cm, cuts apart the wall bottom and be right after the perforation screen plate.Said packing layer top layer is provided with perforation water distributing pipe 11, the aperture 10mm of perforation screen plate, and angle of inclination 15 degree, the water-in 10 of perforation water distributing pipe 11 is provided with filtering net.Said perforation water distributing pipe adopts " king " font to distribute, and the water distribution area of the single water outlet of water distributing pipe is 0.17m
2, water outlet diameter 10mm.
The long-width ratio of said unit bed is 3: 1, highly is 1.55m.Said water leg 9 is wide to be 25cm, highly is the 25cm of bed stuffing height, is connected with water shoot straight up on the water leg 9, and water shoot is provided with water port 7, and the maximum height of water port 7 is 4/5 (being 124cm) of pond height.
Said wetland plant is LUBIANJU and FENGCHECAO mixed planting, and average planting density is 30 strains/m
2
This green belt waterways landscape artificial wetland is in operation, according to different hydraulic detention time (HRT=1,2,3d) operation, during let system be in alternative to put and do and the operating period, with simulation rainy season and fine operation conditions.This system adopts the constant flow rate water inlet, and hydraulic load is 0.5～1m
3/ m
2D.
When this green belt waterways landscape artificial wetland carried out vertical downstream state processing to initial stage runoff rainwater, COD, total phosphorus and total nitrogen stable effluent quality reached surface water V class water quality standard, and the more conventional wetland of clearance is high by 5～20%; The stable surface water III class that reaches of heavy metal; Polycyclic aromatic hydrocarbons is removed efficient reach 80.2%～97.8%.When adopting the horizontal fluidised form of this wetland to handle, stable effluent quality reaches the integrated wastewater discharge standard primary standard.When fine, this wetland water storage time is about 20 days, does not need extra artificial recharge at the non-rainfall of humid region this wetland in season, and plant can be crossed dry season safely.Therefore, this baffling artificial wetland system has realized the processing and the recycling of highway runoff sewage when realizing greening and drain function, improved wetland bed utilising efficiency simultaneously, can significantly reduce construction work input and floor space.Green belt landscape artificial wetland system each index of Inlet and outlet water and clearance index are as shown in table 1.
Table 1
Annotate: the 1# water outlet is the water leg water outlet; The 2# water outlet is a wetland surface current waterways water outlet.
Claims (9)
1. handle the green belt waterways constructed wetland device that the highway rainfall runoff pollutes for one kind; It is characterized in that; Comprise pond body, packing layer and plant in the wetland plant on filler top layer; The bottom of said pond body is provided with water leg, and said packing layer places the top of water leg in the body of pond, cuts apart through the perforation screen plate between water leg and the packing layer; Said packing layer is followed successively by gravel bed, sandy soil layer, blast furnace slag and Wingdale mixolimnion, microlith layer and rubble layer from top to bottom; The top layer of said packing layer is provided with the perforation water distributing pipe, and the water-in of perforation water distributing pipe is provided with filtering net.
2. wetland device according to claim 1; It is characterized in that; This device also comprises the wall of cutting apart that the pond body is separated into a plurality of unit bed; Said pond height is in the top layer of packing layer, saidly cuts apart the height that wall exceeds the packing layer top layer and exceeds 1/3 of filler top layer height for the pond body, cuts apart the wall bottom and is right after the perforation screen plate.
3. wetland device according to claim 1 and 2; It is characterized in that the thickness of said gravel bed, sandy soil layer, blast furnace slag and Wingdale mixolimnion, microlith layer and rubble layer is respectively 5～10cm, 10～50cm, 20～60cm, 3～10cm, 10～30cm.
4. wetland device according to claim 3 is characterized in that, said gravel particle diameter is 10～15mm, and the blast furnace slag particle diameter is 8～15mm, and limestone particle size is 8～15mm, and microlith layer particle diameter is 15～20mm, and rubble layer particle diameter is 20～30mm.
5. wetland device according to claim 4; It is characterized in that; The said groove width of catchmenting be packing layer wide 1/3～1/5, be 1/3～1/5 of bed stuffing height highly, be connected with water shoot straight up on the water leg; Water shoot is provided with water port, and the maximum height of water port is 2/5～4/5 of a pond height.
6. wetland device according to claim 5 is characterized in that, the aperture 10～15mm of said perforation screen plate.
7. wetland device according to claim 6 is characterized in that, the long-width ratio of said unit bed is 2: 2～4: 1, highly is 0.5～2.0m.
8. wetland device according to claim 7 is characterized in that, said wetland plant be cogongrass or LUBIANJU with reed, Canna generalis Bailey, FENGCHECAO, calamus and spring taro in one or more mix, average planting density is 5～50 strains/m
2
9. wetland device according to claim 8 is characterized in that, said perforation water distributing pipe adopts " king " font to distribute, and the water distribution area of the single water outlet of water distributing pipe is 0.15～1.0m
2, water outlet diameter 8～10mm.
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102616937A (en) * | 2012-03-28 | 2012-08-01 | 杜建强 | Ecological wetland buffering system along high-speed rails |
| CN102877439A (en) * | 2012-10-22 | 2013-01-16 | 中国科学院武汉植物园 | Method for constructing vegetation on rip-rapping bulkheads |
| CN103864267A (en) * | 2014-03-25 | 2014-06-18 | 中交第一公路勘察设计研究院有限公司 | Concentrated drainage processing system for highway |
| CN104016487A (en) * | 2014-06-04 | 2014-09-03 | 厦门国寿种猪开发有限公司 | Artificial wetland |
| CN104264773A (en) * | 2014-09-16 | 2015-01-07 | 苏州德华生态环境科技有限公司 | Flow storage wetland system for treating parking lot rainwater and adjusting microclimate |
| CN104310589A (en) * | 2014-10-21 | 2015-01-28 | 华南理工大学 | Water reusing device and method based on integrated vertical-flow constructed wetland |
| CN104445626A (en) * | 2014-10-13 | 2015-03-25 | 武汉中科水生环境工程股份有限公司 | Artificial wetland suitable for narrow-long riverway wastewater treatment |
| CN105621617A (en) * | 2016-01-07 | 2016-06-01 | 长沙理工大学 | Comprehensive purifying device for road runoff |
| CN105859050A (en) * | 2016-06-06 | 2016-08-17 | 东南大学 | Artificial wetland system with miniature water collection pipe |
| CN107500415A (en) * | 2017-10-16 | 2017-12-22 | 苏州德华生态环境科技股份有限公司 | A kind of scientific and technological wetland bank filter system administered for black-odor riverway |
| CN107892444A (en) * | 2017-12-14 | 2018-04-10 | 贺斯迈 | It is a kind of can deep purifying and store rainwater method and system |
| CN109492870A (en) * | 2018-09-30 | 2019-03-19 | 昆山市建设工程质量检测中心 | Biological delaying basin performance check-up target calculation method based on measured value |
| CN109574270A (en) * | 2018-12-14 | 2019-04-05 | 博大绿泽生态建设集团有限公司 | A method of utilizing active carbon and slag processing rainwater |
| CN115544461A (en) * | 2022-11-28 | 2022-12-30 | 成都同飞科技有限责任公司 | Rain and sewage mixed grafting analysis method, system, equipment and medium |
| CN115869690A (en) * | 2022-12-08 | 2023-03-31 | 广州华科环保工程有限公司 | Constructed wetland device for urban runoff filtration treatment and use method thereof |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102616937A (en) * | 2012-03-28 | 2012-08-01 | 杜建强 | Ecological wetland buffering system along high-speed rails |
| CN102877439A (en) * | 2012-10-22 | 2013-01-16 | 中国科学院武汉植物园 | Method for constructing vegetation on rip-rapping bulkheads |
| CN103864267A (en) * | 2014-03-25 | 2014-06-18 | 中交第一公路勘察设计研究院有限公司 | Concentrated drainage processing system for highway |
| CN104016487A (en) * | 2014-06-04 | 2014-09-03 | 厦门国寿种猪开发有限公司 | Artificial wetland |
| CN104264773B (en) * | 2014-09-16 | 2016-06-01 | 苏州德华生态环境科技有限公司 | A kind of for the treatment of parking lot rainwater and the storage stream wet land system regulating miniclimate |
| CN104264773A (en) * | 2014-09-16 | 2015-01-07 | 苏州德华生态环境科技有限公司 | Flow storage wetland system for treating parking lot rainwater and adjusting microclimate |
| CN104445626A (en) * | 2014-10-13 | 2015-03-25 | 武汉中科水生环境工程股份有限公司 | Artificial wetland suitable for narrow-long riverway wastewater treatment |
| CN104445626B (en) * | 2014-10-13 | 2016-03-23 | 武汉中科水生环境工程股份有限公司 | A kind of artificial swamp being applicable to long and narrow river sewage process |
| CN104310589A (en) * | 2014-10-21 | 2015-01-28 | 华南理工大学 | Water reusing device and method based on integrated vertical-flow constructed wetland |
| CN105621617A (en) * | 2016-01-07 | 2016-06-01 | 长沙理工大学 | Comprehensive purifying device for road runoff |
| CN105859050A (en) * | 2016-06-06 | 2016-08-17 | 东南大学 | Artificial wetland system with miniature water collection pipe |
| CN107500415A (en) * | 2017-10-16 | 2017-12-22 | 苏州德华生态环境科技股份有限公司 | A kind of scientific and technological wetland bank filter system administered for black-odor riverway |
| CN107892444A (en) * | 2017-12-14 | 2018-04-10 | 贺斯迈 | It is a kind of can deep purifying and store rainwater method and system |
| CN109492870A (en) * | 2018-09-30 | 2019-03-19 | 昆山市建设工程质量检测中心 | Biological delaying basin performance check-up target calculation method based on measured value |
| CN109574270A (en) * | 2018-12-14 | 2019-04-05 | 博大绿泽生态建设集团有限公司 | A method of utilizing active carbon and slag processing rainwater |
| CN115544461A (en) * | 2022-11-28 | 2022-12-30 | 成都同飞科技有限责任公司 | Rain and sewage mixed grafting analysis method, system, equipment and medium |
| CN115869690A (en) * | 2022-12-08 | 2023-03-31 | 广州华科环保工程有限公司 | Constructed wetland device for urban runoff filtration treatment and use method thereof |
| CN115869690B (en) * | 2022-12-08 | 2024-06-28 | 广州华科环保工程有限公司 | Constructed wetland device for urban runoff filtration treatment and application method thereof |
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