CN103896402B - Aeration reinforcing type wet land type rice straw ecological floating bed device and application - Google Patents
Aeration reinforcing type wet land type rice straw ecological floating bed device and application Download PDFInfo
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Abstract
Aeration reinforcing type wet land type rice straw ecological floating bed device and application, aeration reinforcing type wet land type rice straw ecological floating bed device, comprise wetland groove, aerator, perforated pipe aeration apparatus, rice straw, aquatic macrophyte, silk screen and buoyancy aid, wherein, described wetland groove top is uncovered, bottom surface is provided with water hole, perforated pipe aeration apparatus is layed in wetland trench bottom and is connected with aerator, rice straw is laid on perforated pipe aeration apparatus, aquatic macrophyte is evenly planted in rice straw, silk screen covers on rice straw, buoyancy aid is installed on wetland groove top side wall, wetland groove sidewall is followed successively by first from top to bottom and crosses aqua region, but aqua region and second is crossed aqua region, described rice straw is rice straw. the present invention is rational in infrastructure, has effectively improved exchange frequency and the rejection effect of floating bed to particle, algae in water body of biological floating bed system and water body to be repaired, and eutrophic water body is had to good denitrification effect.
Description
Technical field
The invention belongs to eutrophication water prosthetic device and application, be specifically related to a kind of aeration reinforcing type wet land type rice straw ecological floating bed device and application.
Background technology
Because population increase, industrialization development and urbanization process are accelerated, the river in some cities of flowing through, the lake of surrounding city all present eutrophication or supereutrophic. Data shows, China has had and exceedes 66% and 22% river,lake and reservior and present eutrophication and supereutrophic, there is no at present improvement trend. The negative consequence of these water quality deteriorations: 1. ecological disruption and degeneration; 2. drinking water and water for industrial use suffer serious challenge; 3. social contradications increase etc. And nitrogen pollutant Main Morphology is ammonia nitrogen and nitrate nitrogen in these eutrophication waters, wherein ammonia nitrogen is to be converted into nitrate nitrogen through nitrifying process by the oxygen enrichment state that improves water body. And being converted into nitrogen, nitrate nitrogen must meet two necessary conditions: 1. anaerobic environment; 2. denitrifying carbon source. 2. denitrifying carbon source be one of denitrifying limiting factor of nitrate nitrogen. For the eutrophication problem of anti-water-stop body, the eighties-nineties in 20th century, China has just carried out pollution control and legislation and the systems approaches such as aquatic macrophyte have been dredged, planted to eutrophic water sedimentary from point source and face source.
Water environment pollution repairs expert based on principles such as ecology, environmentologys and cost consideration is developed many original positions and dystopy water environment pollution is repaired and method, the technique of improvement. Wherein biological floating bed is a kind of important classification, and obtains a large amount of research and engineering application.
It should be noted that, traditional biological floating bed all utilize aquatic macrophyte assimilation and be immersed in the water and be suspended in the root system in water body, absorption, the oxygenolysis of cauline leaf surface microorganism film reaches the processes such as denitrogenation, but only utilize the effect of aquatic macrophyte to have certain scarce limit: 1. cause denitrification process slower because biomass is limited; 2. under cryogenic conditions, be applicable to growth and have the floristics of certain denitrification effect ability few; 3. nitrogen pollutant after being absorbed by plant assimilation not rapidly harvesting can cause secondary pollution; 4. be suspended in root system in water body and often cannot obtain sufficient trace element and make its growth conditions not good, affect assimilation effect; And root system tends to by destructions such as fish. Through development and the application of nearly decades, biological floating bedly all obtain significant progress and renewal. For biological floating bed, professor Li Xianning of Southeast China University utilizes biological chain to add the stability of loop technique raising system, with biomass in increase system, the purification repairing effect of raising system, its way is: filter-feeding fish, shellfish and artificial synthetic filling are introduced in biological floating bed system, to set up combined type biological floating bed, strengthened to a certain extent biological floating bed denitrification effect. Professor Sun Lianpeng of Zhongshan University has also strengthened biological floating bed denitrification effect to a certain extent by enhanced biological denitrification bacterial classification (immobilization technology), for the strengthening of biological floating bed denitrification effect provides good support. But also there is certain problem, current various technology all concentrates on how to improve the biological floating bed intrasystem biological volume of holding to improve biological floating bed clean-up effect, can improve to a certain extent the intensity of biological floating bed interior " Ecological Field " and biological floating bed clean-up effect although improve biomass. But undeniable, it is also the poor one of the main reasons of biological floating bed system denitrification effect that the carbon source in surface water body lacks. If can solve the artificial regulatory of biological floating bed denitrification system extremely valuable beyond doubt from the strengthening of biomass and carbon source shortage problem two aspects.
In fact also there is certain defect with the biological volume of holding increasing in biological floating bed with the denitrification effect that improves biological floating bed system by supplementing artificial synthetic filling (combined stuffing, elastic solid filler), because eutrophication water is with respect to sanitary sewage, high-concentration industrial-water in surface water body, its concentration is still lower. Artificial synthetic filling is because its material is artificial synthetic, so its bioaffinity and hydrophily are all poor, adding is to repair concentration lower surface water body, so may there is biofilm formation difficulty when artificial synthetic filling is repaired eutrophication water, and the problem such as biofilm biomass is less. Selecting some is to be easily also worth research at the filler of eutrophication water biofilm to improving biological floating bed repairing effect. Cause in addition the situation of water body denitrification poor effect for lacking carbon source, supplementary carbon source is the only way of improving water body denitrification, but increase some liquid carbon sources (as: methyl alcohol, glucose etc.) for almost through engineering approaches and applicationization of large area eutrophication Hu Ku, not only have the risk of secondary pollution, and magnitude of recruitment cannot calculate. " solid phase denitrification " technology based on the in the last few years and solid-phase carbon source that is widely used both can be used as carbon source is again solid interface simultaneously thereby also can serve as bio-carrier. Biological denitrification denitrogenation can be carried out by quantity of formation denitrifying microorganisms numerous, that population is complicated in these solid-phase carbon source surfaces, meanwhile, these solid-phase carbon source surfaces of condition at Natural Selection can form the microorganism that can decompose these carbon sources, these complicated carbon sources are resolved into the low molecule simple organic (electron donor) that biological denitrification denitrification process needs, realize the double-deck effect of biological denitrification and bio-carrier. In these solid-phase carbon sources, wide because originating, cheap, the non-secondary pollution of native cellulose material is widely adopted.
Comprehensive above thinking, " solid phase denitrification " principle is moved in " combined biological floating bed ", such advantage has: (1) solid-phase carbon source is imbedded root system of plant wherein, and as plant growth medium, environment and the effect of plant growth are improved, also equal to have improved assimilation, and protected the root growth of plant; (2) as long as can be used as solid carbon source material, also can be utilized by microorganism, its bioaffinity and hydrophily are good, the formation effect of its surface biological film and biomass will obviously be better than the artificial synthetic high polymer filler of combined biological floating bed middle use at present, are conducive to strengthen field intensity and the Effect of Ecological Restoration of biological floating bed " Ecological Field "; (3) solid carbon source can " supply with " according to needed carbon source in biological denitrification process the speed that regulates carbon source to supply with as required, there will not be secondary pollution problem. And cheap. Relevant research at present has no bibliographical information, has good Research Prospects.
Summary of the invention
The technical problem solving:The present invention overcomes the deficiencies in the prior art provides a kind of aeration reinforcing type wet land type rice straw ecological floating bed device and application.
Technical scheme of the present invention:
Aeration reinforcing type wet land type rice straw ecological floating bed device, comprise wetland groove, aerator, perforated pipe aeration apparatus, rice straw, aquatic macrophyte, silk screen and buoyancy aid, wherein, described wetland groove top is uncovered, bottom surface is provided with water hole, perforated pipe aeration apparatus is layed in wetland trench bottom and is connected with aerator, rice straw is laid on perforated pipe aeration apparatus, aquatic macrophyte is evenly planted in rice straw, silk screen covers on rice straw, buoyancy aid is installed on wetland groove top side wall, wetland groove sidewall is followed successively by first from top to bottom and crosses aqua region, but aqua region and second is crossed aqua region, described rice straw is rice straw.
Described wetland groove is cylinder or cuboid plastic basket inner, basket height >=30cm, and the aqua region of crossing of basket sidewall is furnished with water hole, and the basket end and the diameter of water hole of crossing aqua region are less than the diameter of rice straw.
Described first to cross aqua region height be 5cm but aqua region height is 20cm, second that to cross aqua region height be 5cm.
Described rice straw is the segment that rice straw is cut into 2-3cm, and be 5%-10% sodium hydrate aqueous solution continuous dipping 10-15 days by straw segment mass concentration, change sodium hydrate aqueous solution every day, after completing, immersion repeatedly cleans 3-5 time with running water or distilled water, by air-dry, dry or after temperature is no more than the air dry oven of 60 DEG C and dries by rice straw segment individual layer tiling, under the ultraviolet light of 240-270nm wavelength, in distance uviol lamp 10-15cm, carry out ultraviolet irradiation 15-40min.
Described aquatic macrophyte is emergent aquactic plant.
Described emergent aquactic plant is canna, calamus, fishscale bamboo, Chinese celery or water spinach.
Described aeration reinforcing type wet land type rice straw ecological floating bed device is in the application of repairing in eutrophic water body.
Aeration type wet land type rice straw provided by the present invention is biological floating bed, biological floating bed, bio-contact oxidation, solid phase denitrification and artificial wetland process are reasonably combined, thereby making biological denitrification bacterium in rice straw surface and root system of plant surface microorganism film can make nitrate transformation is nitrogen, it is nitrate that the microorganism on rice straw surface is also conducive to mineralized nitrogen under aerobic condition, in addition, rice straw surface also easily forms cellulose-decomposing bacterium and rice straw can be decomposed into biological denitrification bacterium carbon source (electron donor) is provided.
Beneficial effect
The first, the present invention is biological floating bed rational in infrastructure, has effectively improved exchange frequency and the rejection effect of floating bed to particle, algae in water body of biological floating bed system and water body to be repaired, is conducive to water body purification; In addition, rice straw surface easily forms thicker biomembrane, that thicker biomembrane provides is aerobic, anoxic and anaerobism membrane structure, be conducive to the realization of nitrated-denitrification, and anaerobism membrane structure is conducive to the residual organic matter in water body to be repaired to be converted into low molecule organic matter, low molecule organic matter after conversion can use for biological denitrification, and therefore the present invention is biological floating bed has good denitrification effect to eutrophic water body;
The second, aquatic macrophyte during the present invention is biological floating bed rationally distributed and in the process of purifying water body upgrowth situation good, not only can beautify the environment, also effectively improved the degradation of whole floating bed system to eutrophic water body;
The 3rd, based on the concept of " solid phase denitrification " know-why and biological floating bed " adding ring " thinking and biological floating bed " Ecological Field ", consider that a large amount of burning of rice straw is one of current China central and east, northeast " haze " Main Factors, rice straw is cut into the segment of certain length, before using, use running water immersion treatment 10-15 days, change water every day 1 time, to remove the water-soluble substances in rice straw tissue, prevent its a large amount of release and pollute water body to be repaired; Pretreated rice straw segment adds in the plastic crate that buoyancy aid is installed as plant growth medium, its advantage is: (1) straw is a kind of common native cellulose material, the same with other cellulosic materials, can in denitrification process, discharge carbon source, and as the solid interface of natural material, its surface forms biomembranous effect and biomembrane quantity has better guarantee, is a kind of good selection; (2) the various trace elements that absorb in straw growth course can progressively discharge in as the process of matrix at straw, can improve traditional plant growth result, meet it to micro-needs; (3) rice straw recycling is the hot issue of studying both at home and abroad at present, rice straw recycling can be reduced to the possibility of crop straw burning, can also provide reference for other agricultural wastes straw recyclings in addition.
Brief description of the drawings
Fig. 1 is the biological floating bed schematic diagram of aeration reinforcing type wet land type rice straw, wherein, 1-wetland groove, 2-aerator, 3-perforated pipe aeration apparatus, 4-rice straw, 5-aquatic macrophyte, 6-silk screen, 7-buoyancy aid, 8-first crosses aqua region, and 9-second crosses aqua region.
Detailed description of the invention
A surrounding and bottom are had to One's name is legion aperture, the plastic material basket that top is unlimited, the orifice size that the basket end and basket sidewall are crossed on aqua region is less than rice straw diameter, prevent that rice straw from drifting out from aperture, first, at the bottom of perforated pipe aeration apparatus uniform spreading is located to plastic crate, oxygen supply; Then, at the bottom of pretreated rice straw segment is first laid in basket, 3-5cm is thick, again aquatic macrophyte root system good aeration water planting is placed on above rice straw segment, and root system is all buried with other pretreated rice straw segment, it is thick that the degree of depth of burying underground is no less than 30cm, and the plantation spacing of aquatic macrophyte can determine according to the luxuriant degree of aquatic macrophyte branches and leaves; Finally cover and prevent that rice straw segment from drifting out from top with silk screen, the buoyancy aid of right quantity is installed, and aerator at the bottom of basket and extraneous feeder are connected. The rice straw surface of described wetland groove inside, aquatic macrophyte root system surface become taking heterotrophic denitrifying Bacteria as master, nitrifier and heterotrophism to remove organic matter bacterium as auxiliary, the environment that multiple bacterial classification coexists by naturally brushing form slection in the present invention; Aquatic macrophyte of the present invention is purchased from market, in order to improve the degree of enriching and the root length of root system of plant, large-scale aquatic being placed on carried out to water planting in clear water, and carries out aeration with core aeration head. Wherein, aquatic macrophyte can be canna, calamus, fishscale bamboo, Chinese celery or water spinach, and the height of wetland groove is not less than 30cm, can specifically select according to different water body situations the wetland groove of differing heights.
The present invention is intake by water pump lifting, under the effect of wetland trench bottom perforated pipe aerating regulation, make water body to be repaired inside and outside wetland groove, form upward flow and lower to stream, through the oxidation of water plant root system, rice straw surface biological film, intensive root system, rice straw crown_interception, the assimilation that supplies carbon source effect and well-grown plant after rice straw decomposes.
Embodiment 1: repair lightly eutrophicated water body
Rice straw is cut into the segment of 2-3cm, and be 5% sodium hydrate aqueous solution continuous dipping 15 days by straw segment mass concentration, change sodium hydrate aqueous solution every day, after completing, immersion repeatedly cleans 3-5 time with running water or distilled water, after dry by the tiling of rice straw segment individual layer, carry out ultraviolet irradiation 40min in distance uviol lamp 10cm under the ultraviolet light of 240nm wavelength after rice straw, get cylinder or cuboid plastic crate, basket is high is 40cm, basket sidewall is followed successively by the aqua region excessively that 10cm is high from top to bottom, what the only aqua region that 20cm is high and 10cm were high crosses aqua region, the basket end and excessively aqua region are furnished with water hole, the diameter in hole is less than the diameter of rice straw, to prevent that rice straw from drifting out from hole, at the bottom of perforated pipe aeration apparatus uniform spreading is located to plastic crate and be connected with aerator, aerator is positioned at plastic crate outside, after the rice straw of handling well is laid on perforated pipe aeration apparatus, the line space that is 8cm according to spacing by the aeration water planting canna of 10 days is evenly planted in rice straw, silk screen covers on rice straw, buoyancy aid is installed on wetland groove top side wall, rear oxygenic aeration.
Floating bed is put into water body to be repaired, natural membrane in water body to be repaired, biofilm formation under 40 days incubation times, rice straw surface and the stable biomembrane of root growth in system, then coordinate well-grown aquatic macrophyte, and enter the experimental stage; When coverage rate is 35%, when 7 days swap times of water body, water temperature is under 4.5 DEG C of conditions, and water inlet total nitrogen, nitrate nitrogen, nitrite nitrogen, ammonia nitrogen, chlorophyll a are respectively 1.89mg.L-1、0.65mg.L-1、0.09mg.L-1、0.73mg.L-1、55.8mg.L-1, effluent quality is respectively 0.35mg.L-1、0.09mg.L-1、0mg.L-1、0.18mg.L-1、0mg.L-1; Dissolved oxygen (DO), pH value are respectively from 4.67mg.L-1, 7.45 rise to 7.88mg.L-1, 8.13. Wherein canna can well survive in this process, can not wither and death.
Embodiment 2: repair lightly eutrophicated water body
Rice straw is cut into the segment of 2-3cm, and be 10% sodium hydrate aqueous solution continuous dipping 10 days by straw segment mass concentration, change sodium hydrate aqueous solution every day, after completing, immersion repeatedly cleans 3-5 time with running water or distilled water, after dry by the tiling of rice straw segment individual layer, carry out ultraviolet irradiation 15min in distance uviol lamp 15cm under the ultraviolet light of 270nm wavelength after rice straw, get cylinder or cuboid plastic crate, basket is high is 30cm, basket sidewall is followed successively by the aqua region excessively that 5cm is high from top to bottom, what the only aqua region that 20cm is high and 5cm were high crosses aqua region, the basket end and excessively aqua region are furnished with water hole, the diameter in hole is less than the diameter of rice straw, to prevent that rice straw from drifting out from hole, at the bottom of perforated pipe aeration apparatus uniform spreading is located to plastic crate and be connected with aerator, aerator is positioned at plastic crate outside, after the rice straw of handling well is laid on perforated pipe aeration apparatus, the line space that is 12cm according to spacing by the aeration water planting canna of 15 days is evenly planted in rice straw, silk screen covers on rice straw, buoyancy aid is installed on wetland groove top side wall, rear oxygenic aeration.
Floating bed is put into water body to be repaired, natural membrane in water body to be repaired, biofilm formation under 40 days incubation times, rice straw surface and the stable biomembrane of root growth in system, then coordinate well-grown aquatic macrophyte, and enter the experimental stage; When coverage rate is 40%, when 5 days swap times of water body, water temperature is under 11.3 DEG C of conditions, and water inlet total nitrogen, nitrate nitrogen, nitrite nitrogen, ammonia nitrogen, chlorophyll a are respectively 2.45mg.L-1、1.12mg.L-1、0.23mg.L-1、0.98mg.L-1、390.6mg.L-1, effluent quality is respectively 0.55mg.L-1、0.14mg.L-1、0.09mg.L-1、0.31mg.L-1、41.85mg.L-1; Dissolved oxygen (DO), pH value are respectively from 6.52mg.L-1, 7.89 rise to 8.76mg.L-1, 9.99. Wherein canna can well survive in this process, can not wither and death.
Embodiment 3: repair lightly eutrophicated water body
Rice straw is cut into the segment of 2-3cm, and be 8% sodium hydrate aqueous solution continuous dipping 12 days by straw segment mass concentration, change sodium hydrate aqueous solution every day, after completing, immersion repeatedly cleans 3-5 time with running water or distilled water, after dry by the tiling of rice straw segment individual layer, carry out ultraviolet irradiation 30min in distance uviol lamp 12cm under the ultraviolet light of 260nm wavelength after rice straw, get cylinder or cuboid plastic crate, basket is high is 30cm, basket sidewall is followed successively by the aqua region excessively that 5cm is high from top to bottom, what the only aqua region that 20cm is high and 5cm were high crosses aqua region, the basket end and excessively aqua region are furnished with water hole, the diameter in hole is less than the diameter of rice straw, to prevent that rice straw from drifting out from hole, at the bottom of perforated pipe aeration apparatus uniform spreading is located to plastic crate and be connected with aerator, aerator is positioned at plastic crate outside, after the rice straw of handling well is laid on perforated pipe aeration apparatus, the line space that is 10cm according to spacing by the aeration water planting canna of 12 days is evenly planted in rice straw, silk screen covers on rice straw, buoyancy aid is installed on wetland groove top side wall, rear oxygenic aeration.
Floating bed is put into water body to be repaired, natural membrane in water body to be repaired, biofilm formation under 40 days incubation times, rice straw surface and the stable biomembrane of root growth in system, then coordinate well-grown aquatic macrophyte, and enter the experimental stage; When coverage rate is 38%, when 6 days swap times of water body, water temperature is under 11.3 DEG C of conditions, and water inlet total nitrogen, nitrate nitrogen, nitrite nitrogen, ammonia nitrogen, chlorophyll a are respectively 2.15mg.L-1、0.95mg.L-1、0.14mg.L-1、0.86mg.L-1、190.6mg.L-1, effluent quality is respectively 0.45mg.L-1、0.12mg.L-1、0.06mg.L-1、0.27mg.L-1、31.85mg.L-1; Dissolved oxygen (DO), pH value are respectively from 5.52mg.L-1, 7.69 rise to 8.46mg.L-1, 9.39. Wherein canna can well survive in this process, can not wither and death.
Embodiment 4: repair super eutrophic water body
Rice straw is cut into the segment of 2-3cm, and be 10% sodium hydrate aqueous solution continuous dipping 15 days by straw segment mass concentration, change sodium hydrate aqueous solution every day, after completing, immersion repeatedly cleans 3-5 time with running water or distilled water, after dry by the tiling of rice straw segment individual layer, carry out ultraviolet irradiation 30min in distance uviol lamp 12cm under the ultraviolet light of 260nm wavelength after rice straw, get cylinder or cuboid plastic crate, basket is high is 60cm, basket sidewall is followed successively by the aqua region excessively that 15cm is high from top to bottom, what the only aqua region that 30cm is high and 15cm were high crosses aqua region, the basket end and excessively aqua region are furnished with water hole, the diameter in hole is less than the diameter of rice straw, to prevent that rice straw from drifting out from hole, at the bottom of perforated pipe aeration apparatus uniform spreading is located to plastic crate and be connected with aerator, aerator is positioned at plastic crate outside, after the rice straw of handling well is laid on perforated pipe aeration apparatus, evenly be planted in rice straw being that 10cm is alternate by the aeration water planting canna of 10 days and calamus according to spacing, silk screen covers on rice straw, buoyancy aid is installed on wetland groove top side wall.
Floating bed is put into the biomembrane culture tank that fills water body to be repaired, oxygenic aeration, in the time of 22 days, can form stable biomembrane on rice straw surface, plant grew well, under incubation time, rice straw surface and the stable biomembrane of root growth in system, canna and calamus well-grown, when coverage rate is 40%, when 2 days swap times of water body and water temperature are 15 DEG C, water inlet total nitrogen, nitrate nitrogen, ammonia nitrogen are respectively 12mg.L-1、7mg.L-1、5mg.L-1; Effluent quality is respectively 0.85mg.L-1、0.2mg.L-1、0.07mg.L-1, water outlet nitrite concentration 0.04mg.L-1. The per day growth rate of canna is 1.47cm.d simultaneously-1, the per day growth rate of calamus reaches 1.25cm.d-1。
Embodiment 5: repair super eutrophic water body
Rice straw is cut into the segment of 2-3cm, and the sodium hydrate aqueous solution continuous dipping 10-15 days that is 10% by mass concentration by straw segment, change sodium hydrate aqueous solution every day, after completing, immersion repeatedly cleans 3-5 time with running water or distilled water, after dry by the tiling of rice straw segment individual layer, carry out ultraviolet irradiation 40min in distance uviol lamp 10cm under the ultraviolet light of 270nm wavelength after rice straw, get cylinder or cuboid plastic crate, basket is high is 30cm, basket sidewall is followed successively by the aqua region excessively that 5cm is high from top to bottom, what the only aqua region that 20cm is high and 5cm were high crosses aqua region, the basket end and excessively aqua region are furnished with water hole, the diameter in hole is less than the diameter of rice straw, to prevent that rice straw from drifting out from hole, at the bottom of perforated pipe aeration apparatus uniform spreading is located to plastic crate and be connected with aerator, aerator is positioned at plastic crate outside, after the rice straw of handling well is laid on perforated pipe aeration apparatus, evenly be planted in rice straw being that 15cm is alternate by the aeration water planting canna of 15 days and calamus according to spacing, silk screen covers on rice straw, buoyancy aid is installed on wetland groove top side wall.
Floating bed is put into the biomembrane culture tank that fills water body to be repaired, oxygenic aeration, can form stable biomembrane on rice straw surface at 28 days, plant grew well, under incubation time, rice straw surface and the stable biomembrane of root growth in system, canna and calamus well-grown, when coverage rate is 45%, when 4 days swap times of water body and water temperature are 25 DEG C, water inlet total nitrogen, nitrate nitrogen, ammonia nitrogen are respectively 17mg.L-1、11mg.L-1、6mg.L-1; Effluent quality is respectively 1.25mg.L-1、0.56mg.L-1、0.11mg.L-1, water outlet nitrite concentration 0.09mg.L-1. The per day growth rate of canna is 2.31cm.d simultaneously-1, the per day growth rate of calamus reaches 1.75cm.d-1。
Embodiment 6: repair super eutrophic water body
Rice straw is cut into the segment of 2-3cm, and be 5% sodium hydrate aqueous solution continuous dipping 10-15 days by straw segment mass concentration, change sodium hydrate aqueous solution every day, after completing, immersion repeatedly cleans 3-5 time with running water or distilled water, after dry by the tiling of rice straw segment individual layer, carry out ultraviolet irradiation 15min in distance uviol lamp 10cm under the ultraviolet light of 270nm wavelength after rice straw, get cylinder or cuboid plastic crate, basket is high is 30cm, basket sidewall is followed successively by the aqua region excessively that 5cm is high from top to bottom, what the only aqua region that 20cm is high and 5cm were high crosses aqua region, the basket end and excessively aqua region are furnished with water hole, the diameter in hole is less than the diameter of rice straw, to prevent that rice straw from drifting out from hole, at the bottom of perforated pipe aeration apparatus uniform spreading is located to plastic crate and be connected with aerator, aerator is positioned at plastic crate outside, after the rice straw of handling well is laid on perforated pipe aeration apparatus, evenly be planted in rice straw being that 12cm is alternate by the aeration water planting canna of 12 days and calamus according to spacing, silk screen covers on rice straw, buoyancy aid is installed on wetland groove top side wall.
Floating bed is put into the biomembrane culture tank that fills water body to be repaired, oxygenic aeration, can form stable biomembrane on rice straw surface at 25 days, plant grew well, under incubation time, rice straw surface and the stable biomembrane of root growth in system, canna and calamus well-grown, when coverage rate is 44%, when 3 days swap times of water body and water temperature are 20 DEG C, water inlet total nitrogen, nitrate nitrogen, ammonia nitrogen are respectively 16mg.L-1、9mg.L-1、5mg.L-1; Effluent quality is respectively 1.05mg.L-1、0.36mg.L-1、0.09mg.L-1, water outlet nitrite concentration 0.06mg.L-1. The per day growth rate of canna is 1.98cm.d simultaneously-1, the per day growth rate of calamus reaches 1.45cm.d-1。
Claims (5)
1. aeration reinforcing type wet land type rice straw ecological floating bed device, is characterized in that, comprise wetland groove (1),Aerator (2), perforated pipe aeration apparatus (3), rice straw (4), aquatic macrophyte (5), silk screenAnd buoyancy aid (7) (6), wherein, described wetland groove (1) top is uncovered, and bottom surface is provided with water hole, perforationTube aeration device (3) is layed in wetland groove (1) bottom and is connected rice straw (4) with aerator (2)Be laid in perforated pipe aeration apparatus (3) upper, aquatic macrophyte (5) is evenly planted in rice straw (4)In, it is upper that silk screen (6) covers rice straw (4), and buoyancy aid (7) is installed on wetland groove (1) sidewall topPortion, wetland groove (1) sidewall is followed successively by first from top to bottom and crosses aqua region (8) but aqua region and the second mistakeAqua region (9); Described rice straw (4) is rice straw; Described wetland groove (1) is cylinder or lengthSide's body plastic basket inner, basket height >=30cm, the aqua region of crossing of basket sidewall is furnished with water hole, the basket end and cross poolThe diameter of the water hole in territory is less than the diameter of rice straw; Described rice straw (4) is that rice straw is cut intoThe segment of 2-3cm, and be 5%-10% sodium hydrate aqueous solution continuous dipping by straw segment mass concentration10-15 days, changes sodium hydrate aqueous solution every day, has soaked repeatedly to clean 3-5 with running water or distilled water afterwardsInferior, after being dried, rice straw segment individual layer is tiled, distance purple under the ultraviolet light of 240-270nm wavelengthIn outer lamp 10-15cm, carry out ultraviolet irradiation 15-40min.
2. aeration reinforcing type wet land type rice straw ecological floating bed device according to claim 1, its featureBe, described first to cross aqua region (8) be highly 5cm but aqua region height is 20cm, the second mistakeAqua region (9) is highly 5cm.
3. aeration reinforcing type wet land type rice straw ecological floating bed device according to claim 1, its featureBe, described aquatic macrophyte (5) is emergent aquactic plant.
4. aeration reinforcing type wet land type rice straw ecological floating bed device according to claim 3, its featureBe, described emergent aquactic plant is canna, calamus, fishscale bamboo, Chinese celery or water spinach.
5. aeration reinforcing type wet land type rice straw ecological floating bed device as claimed in claim 1 is being repaired richnessApplication in nutrition water body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410079176.0A CN103896402B (en) | 2014-03-06 | 2014-03-06 | Aeration reinforcing type wet land type rice straw ecological floating bed device and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410079176.0A CN103896402B (en) | 2014-03-06 | 2014-03-06 | Aeration reinforcing type wet land type rice straw ecological floating bed device and application |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103896402A CN103896402A (en) | 2014-07-02 |
| CN103896402B true CN103896402B (en) | 2016-05-18 |
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| CN108353780A (en) * | 2018-04-04 | 2018-08-03 | 南京笙迪环境科技有限公司 | Novel plant water planting container and Mobile biological floating bed |
| CN109970205B (en) * | 2019-03-15 | 2024-05-07 | 山东省环科院环境工程有限公司 | Efficient denitrification breathable impermeable subsurface flow constructed wetland and operation method thereof |
| CN110622823A (en) * | 2019-09-20 | 2019-12-31 | 中国科学院东北地理与农业生态研究所 | Construction method of substrate for recovering reed clumps in constructed wetland deep water area |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101525184A (en) * | 2009-04-22 | 2009-09-09 | 河海大学 | Method for complementing organic carbon sources to artificial wetland |
| CN202164172U (en) * | 2011-03-15 | 2012-03-14 | 张翼强 | Combined type ecological floating bed |
| CN203256023U (en) * | 2013-01-28 | 2013-10-30 | 徐州工程学院 | Tail water deep processing aeration-type ecological floating island with bamboo filament filler substrate |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101525184A (en) * | 2009-04-22 | 2009-09-09 | 河海大学 | Method for complementing organic carbon sources to artificial wetland |
| CN202164172U (en) * | 2011-03-15 | 2012-03-14 | 张翼强 | Combined type ecological floating bed |
| CN203256023U (en) * | 2013-01-28 | 2013-10-30 | 徐州工程学院 | Tail water deep processing aeration-type ecological floating island with bamboo filament filler substrate |
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