CN103819006A - Bio-rope strengthened phytoremediation system for purifying polluted river - Google Patents
Bio-rope strengthened phytoremediation system for purifying polluted river Download PDFInfo
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- CN103819006A CN103819006A CN201410096071.6A CN201410096071A CN103819006A CN 103819006 A CN103819006 A CN 103819006A CN 201410096071 A CN201410096071 A CN 201410096071A CN 103819006 A CN103819006 A CN 103819006A
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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
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The invention discloses a bio-rope strengthened phytoremediation system for purifying a polluted river and relates to water pollution control methods. According to the system, bio-ropes are adopted to strengthen a phytoremediation technology, so as to form a plant-microorganism strengthened purification repair system. The upper part of the system is an emergent-plant bed, the lower part of the system is a bio-rope fixed bed, and the emergent-plant bed and the bio-rope fixed bed are connected by a framework and then are fixed in the river. The emergent-plant bed is planted with canna, iris tectorum, calamus, cyperus alternifolius and the like and is fixed on the framework by adopting a vacuum-plastic water floating bed; the bio-rope fixed bed adopts a high-performance contact filtration material, namely the bio-ropes; the upper and lower ends of each bio-rope are fixed on the framework, and an adsorption layer with the thickness of 2-4cm is arranged at the bottom of the bio-rope fixed bed and consists of a nano-carbon microsphere layer, a nano-carbon tube layer and an adsorption mesh from top to bottom. The system has the advantages that the problem of water pollution of rivers of catchment river network districts can be solved, and pollutants, such as organic matters, nitrogen and phosphorus, in sewage are effectively removed.
Description
Technical field
The present invention relates to the groundwater pollution control of water body, specifically the biological rope fortification of plants repair system in a kind of purifying contaminated river course.
Background technology
Along with the growth of population and economic fast development, increasing pollutent is discharged into river, far exceedes the self-purification capacity in river.China's stream pollution is serious, in state's control section of national ten large watersheds in 2012, IV～V class and bad V class water quality section ratio are respectively 20.9% and 10.2%, and the section ratio that water body has been lost use value (being that water quality is IV, V, bad V class) accounts for 31.1%.Especially urban river, owing to being subject to, the impact of urban development is larger, and its water pollutes significant change has all occurred from pollution type to pollution intensity, restricts on the one hand society, economy and the environment sustainable development in city, and on the other hand, harm people are healthy.Therefore, the improvement of municipal pollution water body is very urgent.In view of the own characteristic of city river, in the last few years, polluted river channel was administered with the method for repairing and carried out a large amount of research and trial.River water body restorative procedure mainly comprises Physical, chemical method and restoration of the ecosystem method, and the plurality of advantages such as wherein, ecological reestablishment is safe owing to having, economic, practical, system become the technical way of Discussion On Measures of Rivers Pollution Treatment.
The concept of restoration of the ecosystem is since 20 century 70s are suggested, because its application is wide, cost is low, aesthetics of environment value is high, environmental perturbation is little, some developed countries cause extensive attention in the U.S., West Europe etc. to administer the features such as pollution is also conducive to improve the ecological environment simultaneously, once repeatedly held in the world symposium and carried out some correlation researchs.Since the nineties in 20th century, the countries such as China in Asia, Japan, Korea S also particularly pay attention to the research of restoration of the ecosystem, and implement a series of Ecological Restoration Project, the water quality of rivers and lakes is improved, guarantee the quality of tap water, and in succession carried out the experimental study of a series of ecological engineerings, also obtain a large amount of achievements in research.
A kind of less investment, efficiency are high, the method for convenient management for the removal of polluted-water pollutent provides for phytoremediation system.Now there are some researches show the well-grown there is good effects of purification quality and application prospect widely in polluted river channel such as Canna generalis Bailey, iris, calamus, parasol grass, Caulis Miscanthis floriduli, Wildcelery Herb.Meanwhile, between the microorganism in phytoremediation system and its purification function, have remarkable relation, quantity more at most clearance is higher, wherein BOD in sewage
5clearance and total plate count significant correlation, the quantity of the clearance of ammonia nitrogen and nitrobacteria and denitrifying bacterium is closely related.
Ecology-biological sewage treatment technology, it is the vital movement of utilizing the microorganism of the plant cultivated or cultivation, inoculation, to water pollutant shift, conversion and Degradation, thereby the technology that water body is purified, has that treatment effect is good, construction costs is relatively low, does not need power consumption or low power consuming, the advantage such as running cost is cheap.In addition, this treatment technology, not to water body delivering medicament, can not form secondary pollution.Can also improve and combine with greening environment and view, administering district's construction leisure and Sports facilities, create the Amenities that man and nature merge mutually.
(1) biomembrance process refers to that using natural materials (as cobble), synthetic materials (as fiber) is carrier, form a kind of special microbial film on its surface, biofilm surface is long-pending large, can be microorganism larger attaching surface is provided, be conducive to strengthen the Degradation to pollutent.Biomembrance process main technique method has biological gallery, biological filter, biological contact oxidation pond etc.Biomembrance process has higher processing efficiency, for being subject to organism and ammonia nitrogen slight pollution water body to have obvious effect.Its organic loading is higher, and the contact residence time is short, reduces floor space, reduces investment outlay.In addition, when operational management, there is no sludge bulking and sludge reflux problem, and anti impulsion load.
(2) principle of artificial swamp is to utilize physics in natural ecosystems, chemistry and biological triple actings in conjunction to realize dirty water purification.This wet land system is in certain length and width when in acclive depression, bottom surface, is mixed and form bed of packings by soil and filler (as cobble etc.), and polluted water can flow circuitously in the filler gap of bed body, or mobile in bed surface.There is the waterplant that handling property is good, surviving rate is high (as reed etc.) at the surface grafting of bed body, form a unique animals and plants ecotope, polluted water is processed.
One of distinguishing feature of artificial swamp is that it has stronger degradation capability to organic pollutant.Insoluble organism in waste water, by precipitation, the filteration of wetland, can be trapped soon and then be utilized by microorganism; In waste water, dissolved organic matter can be by the removal that is decomposed of the biomembranous absorption of root system of plant, absorption and biological metabolism degradation process.This technology has become the effective ways that improve great water body water quality.
(3) land treatment technique is a kind of ancient but effective water technology.It is to be treatment facility take soil, utilizes absorption, filtration and cleaning action and the self regulating and control function of soil-plant system, reaches the object to water purification to a certain degree.Land treatment system can be divided into several forms such as quick diafiltration, slow rate, overland flow, wetland processing.External practical experience shows, land treatment system has good removal effect for organic compound especially organochlorine and ammonia nitrogen etc.
In sum, existing water body phytoremediation technology, mainly that the nitrogen phosphorus in water body is removed in the absorption and sorption to pollutent, cut-off filter effect by plant, in system, the content of Ammonifying bacteria, nitrobacteria, denitrifying bacterium is lower, a little less than nitration denitrification effect, lower to removal effects such as the organism in sewage, nitrogen, phosphorus, especially dynamically under flow condition, nitrogen phosphorus is difficult to remove.
Summary of the invention
For the deficiency existing in prior art, the object of this invention is to provide the biological rope fortification of plants repair system in a kind of purifying contaminated river course, adopt biological rope to strengthen phytoremediation technology, composition " plant-microorganism " strengthened purification repair system, this system can solve the pollution problem of river network of watershed area river water body, effectively removes the pollution substances such as organism in sewage, nitrogen, phosphorus.
To achieve these goals, the present invention realizes by the following technical solutions:
(1) the biological rope fortification of plants repair system in purifying contaminated river course, system top is emergent bed, and bottom is biological rope fixed bed, and emergent bed is fixed in river course after using framework to be connected with biological rope fixed bed.
(2) emergent bed plantation Canna generalis Bailey, iris, calamus, parasol grass etc., mainly utilize absorption and sorption effect and microbiological deterioration, partial suspended material is settled down, remove the nitrogen phosphorus in river water body simultaneously, and other organic pollutants; Choose emergent plant height scope at 20-30cm, transverse and longitudinal interval is set and is 20cm, adopt vacuum plastic water surface floating bed to be fixed on bamboo or steel framework.
(3) biological rope fixed bed adopts novel high-performance contact percolation material-biological rope, this kind of biological rope is cord-like, upper and lower biological rope two ends are fixed on framework (bamboo or steel pipe), frame height is 1m, biological rope transverse and longitudinal interval is set and is 20cm, therefore, the installation of the framework biological rope of 1 cubic metre is 25m, after biological rope sets, be fixed on emergent bed below; Sewage contacts with biological rope and makes microorganic adhesion on biological rope, form microbial film, makes the oxidized decomposition of organism, nitrogen, phosphorus in sewage and reaches purification of water quality in the microorganism of biological rope surface attachment.
Above-mentioned biological rope is by wetting ability strong novel contact oxidation material polypropylene fibre, constitutionally stable vinylon and nylon, and the materials processing such as the effective polyvinylidene dichloride of recovery of elasticity is made, its outer good attachment oxygen animalcule, internal layer adheres to anaerobion; On biological rope, can adhere to the microorganisms such as a large amount of Ammonifying bacterias, nitrobacteria, denitrifying bacterium and form microbial film, organism, nitrogen, phosphorus in sewage are removed by oxygenolysis, nitration denitrification effect, greatly improve the decontamination effect improving of water body.
(4) biological rope fixed bed bottom is provided with the adsorption layer of 2-4cm, by pollution substances such as the suspended substance in planar water, organism, nitrogen, phosphorus, further improves the purification efficiency of system.Described adsorption layer is nano-sized carbon microballoon layer, CNT (carbon nano-tube) layer, absorption net from top to bottom; The adding proportion of nano-sized carbon microballoon layer and CNT (carbon nano-tube) layer is volume ratio 1: 2; Absorption net is that titanium metal is made.
The preparation method of described CNT (carbon nano-tube) is: 1) raw materials weighing: gac; 2) taken gac is put into the dry atmosphere protection tube type vacuum stove of putting into after 10～30 hours of vacuum drying oven of 60-70 ℃, then pass into nitrogen or argon gas, nitrogen or argon flow amount are 500～600sccm, be warming up to 500～600 ℃ with the speed of 20～25 ℃/min, pass into again the methane gas that flow is 350～650sccm, keep pressure at 1.5～2.0Mpa; Turn off nitrogen or argon gas simultaneously, constant temperature 90～120min growing nano carbon pipe and carbon fiber at 600～1000 ℃ of temperature, it at least contains 18 carbon atoms, and the length of described CNT (carbon nano-tube) and carbon fiber and diameter are 10～20nm, and specific surface area is 100-500m
2.g
-1; Then turning off power supply makes system at N
2in atmosphere, make reactive system Slow cooling obtain described CNT (carbon nano-tube).
Beneficial effect of the present invention: dynamically under flow condition, this system is being tested, result shows that this invention is to COD, SS, NH
3-N, TN, TP clearance can reach respectively 70.2%, 80.9%, 75.9%, 76.7%, 82.8%.By the utilization of biological rope fortification of plants repair system, COD, SS, NH are greatly cut down
3-N, TN, TP content, effectively improve polluted river channel water quality, for downstream water body has reduced pollution load pressure.
Accompanying drawing explanation
Describe the present invention in detail below in conjunction with the drawings and specific embodiments;
Fig. 1 is biological rope fortification of plants repair system schematic diagram of the present invention, wherein 1 represents emergent bed, and 2 represent biological rope fixed bed, and 3 represent biological rope, and 4 represent framework, and 5 represent adsorption layer.
Fig. 2 is river course space layout figure of the present invention.
Embodiment
For technique means, creation characteristic that the present invention is realized, reach object and effect is easy to understand, below in conjunction with embodiment, further set forth the present invention.
Take river course, southern Jiangsu as example, choose the scope of 20 meters of length and carried out experimental study.Arrange biological rope fortification of plants repair system (Fig. 1) in two sides, river course, system top is emergent bed 1, and bottom is biological rope fixed bed 2, utilizes " plant-microorganism " strengthened purification to remove the pollutents such as nitrogen phosphorus.River course is specifically implemented space layout and is seen Fig. 2.
(1) emergent bed 1: plantation Canna generalis Bailey, plant height scope, at 20-30cm, arranges transverse and longitudinal interval and is 20cm, adopts vacuum plastic water surface floating bed to be fixed on bamboo framework, plants Canna generalis Bailey 50 strains on the framework of long 2m, wide 1m.
(2) biological rope fixed bed 2: biological rope is fixed on bamboo framework 4 at two ends Shang Xia 3, transverse and longitudinal interval is set and is 20cm, each frame installation biological rope 3 amounts at long 2m, wide 1m, high 1m are 50m, after biological rope sets, are fixed on emergent bed below.
(3) biological rope fortification of plants repair system fixes and is placed in river course.The long 2m of each biological rope fortification of plants repair system, wide 1m, places at two sides, river course interval 2m, arranges altogether 10 biological rope fortification of plants repair systems within the scope of 20m, amounts to 500 strains of plantation Canna generalis Bailey, and it is 500m that biological rope amount is installed.
(4) adsorption layer of 3cm is established in biological rope fixed bed bottom, and described adsorption layer is nano-sized carbon microballoon layer, CNT (carbon nano-tube) layer, absorption net from top to bottom; The adding proportion of nano-sized carbon microballoon layer and CNT (carbon nano-tube) layer is volume ratio 1: 2; Absorption net is that titanium metal is made.
The preparation method of described CNT (carbon nano-tube) is: raw materials weighing gac, the vacuum drying oven that taken gac is put into 60-70 ℃ is put into atmosphere protection tube type vacuum stove after dry 10～30 hours, then pass into nitrogen or argon gas, nitrogen or argon flow amount are 500～600sccm, be warming up to 500～600 ℃ with the speed of 20～25 ℃/min, pass into again the methane gas that flow is 350～650sccm, keep pressure at 1.5～2.0Mpa; Turn off nitrogen or argon gas simultaneously, constant temperature 90～120min growing nano carbon pipe and carbon fiber at 600～1000 ℃ of temperature, it at least contains 18 carbon atoms, and the length of described CNT (carbon nano-tube) and carbon fiber and diameter are 10～20nm, and specific surface area is 100-500m
2.g
-1; Then turning off power supply makes system at N
2in atmosphere, make reactive system Slow cooling obtain described CNT (carbon nano-tube).
Test by river course, result shows that this invention is to COD, SS, NH
3-N, TN, TP clearance can reach respectively 70.2%, 80.9%, 75.9%, 76.7%, 82.8%.COD, SS, NH in the water outlet of downstream
3the Pollutant levels such as-N, TN, TP significantly decline (in table 1), and water quality is obviously improved.
System Inlet and outlet water water monitoring data (mg/L) after table 1 engineering construction
The above, be only case study on implementation of the present invention, is not the restriction of the present invention being made to other form, and any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the equivalent embodiment of equivalent variations.But every technical solution of the present invention content that do not depart from, any simple modification, equivalent variations and the remodeling above embodiment done according to technical spirit of the present invention, still belong to the protection domain of technical solution of the present invention.
Claims (5)
1. the biological rope fortification of plants repair system in a purifying contaminated river course, it is characterized in that comprising waterborne, two portions under water: top is emergent bed, bottom is biological rope fixed bed, emergent bed is fixed in river course after using framework to be connected with biological rope fixed bed, composition " plant-microorganism " strengthened purification repair system.Top emergent bed plantation Canna generalis Bailey, iris, calamus, parasol grass, adopt vacuum plastic water surface floating bed to be fixed on bamboo or steel framework; Bottom biological rope fixed bed adopts high-performance contact percolation material-biological rope, and upper and lower biological rope two ends are fixed on framework, and the adsorption layer of 2-4cm is established in biological rope fixed bed bottom, and adsorption layer is nano-sized carbon microballoon layer, CNT (carbon nano-tube) layer, absorption net from top to bottom.
2. the biological rope fortification of plants repair system in a kind of purifying contaminated according to claim 1 river course, it is characterized in that biological rope fortification of plants repair system top plantation emergent, select the good Canna generalis Bailey of effects of purification quality, calamus, parasol grass, iris etc., system bottom biological rope fixed bed can provide oxygenolysis, the required microorganism of nitration denitrification effect for top emergent root system.
3. the biological rope fortification of plants repair system in a kind of purifying contaminated according to claim 1 river course, it is characterized in that bottom biological rope fixed bed adopts high-performance contact percolation material-biological rope, biological rope is by wetting ability strong novel contact oxidation material polypropylene fibre, constitutionally stable vinylon and nylon, and the effective polyvinylidene dichloride materials processing of recovery of elasticity is made, its outer good attachment oxygen animalcule, internal layer adheres to anaerobion.
4. the biological rope fortification of plants repair system in a kind of purifying contaminated according to claim 1 river course, it is characterized in that described biological rope fixed bed bottom is provided with the adsorption layer of 2-4cm, described adsorption layer is nano-sized carbon microballoon layer, CNT (carbon nano-tube) layer, absorption net from top to bottom; The adding proportion of nano-sized carbon microballoon layer and CNT (carbon nano-tube) layer is volume ratio 1: 2.
5. the biological rope fortification of plants repair system in a kind of purifying contaminated according to claim 4 river course, is characterized in that described absorption net is that titanium metal is made.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104077487A (en) * | 2014-07-04 | 2014-10-01 | 南京大学 | Method for simulating optimized water quality improvement scheme by virtue of water quality model |
| CN104496029A (en) * | 2014-11-30 | 2015-04-08 | 陈伟群 | Method for preparing three-dimensional floating bed for purifying eutrophication water source |
| CN104803557A (en) * | 2015-04-17 | 2015-07-29 | 苏州绿世界园林发展有限公司 | Compound type ditch pond wetland system with functions of farmland drainage purification and ecological restoration |
| CN105000749A (en) * | 2015-06-09 | 2015-10-28 | 珠江水利委员会珠江水利科学研究院 | In-situ ecological restoration method suitable for sewage in sewage discharge outlets of tidal inland river system and system and application |
| CN109572949A (en) * | 2018-12-28 | 2019-04-05 | 扬州大学 | A kind of multifunction cement emulsified asphalt slurry ecological floating island |
| CN113402030A (en) * | 2021-06-25 | 2021-09-17 | 俞宏军 | Efficient biological method for treating organic wastewater |
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| CN201873574U (en) * | 2010-11-23 | 2011-06-22 | 苏州天泽环境科学有限公司 | Integrated type artificial ecological floating island module |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104077487A (en) * | 2014-07-04 | 2014-10-01 | 南京大学 | Method for simulating optimized water quality improvement scheme by virtue of water quality model |
| CN104496029A (en) * | 2014-11-30 | 2015-04-08 | 陈伟群 | Method for preparing three-dimensional floating bed for purifying eutrophication water source |
| CN104803557A (en) * | 2015-04-17 | 2015-07-29 | 苏州绿世界园林发展有限公司 | Compound type ditch pond wetland system with functions of farmland drainage purification and ecological restoration |
| CN105000749A (en) * | 2015-06-09 | 2015-10-28 | 珠江水利委员会珠江水利科学研究院 | In-situ ecological restoration method suitable for sewage in sewage discharge outlets of tidal inland river system and system and application |
| CN109572949A (en) * | 2018-12-28 | 2019-04-05 | 扬州大学 | A kind of multifunction cement emulsified asphalt slurry ecological floating island |
| CN113402030A (en) * | 2021-06-25 | 2021-09-17 | 俞宏军 | Efficient biological method for treating organic wastewater |
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