CN105236583A - Lotus-root-shaped eutrophic sediment remediation system capable of aeration - Google Patents
Lotus-root-shaped eutrophic sediment remediation system capable of aeration Download PDFInfo
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- CN105236583A CN105236583A CN201510712637.8A CN201510712637A CN105236583A CN 105236583 A CN105236583 A CN 105236583A CN 201510712637 A CN201510712637 A CN 201510712637A CN 105236583 A CN105236583 A CN 105236583A
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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
- 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 lotus-root-shaped eutrophic sediment remediation system capable of aeration. The system comprises a wind energy aeration body, an universal rotatory connection aeration body, a plant floating body, a lotus-root-shaped matrix body and a nitrobacteria reinforcement body which are successively in connection from top to bottom, and the plant floating body and the lotus-root-shaped matrix body are connected via a pulling rope. According to the invention, the oxygen supplementation effects of the wind energy aeration body and the universal rotary connection aeration body realize regeneration and utilization of biological zeolite and a biological ceramic ring; the system can effectively remove organic pollutants and nutritive salts in a sediment-water interface, and specifically has significant removal efficiency to nitrogen pollutants; meanwhile, through the harvesting of aquatic plants, applicability of pollutants to the eutrophic sediments with high content of the nitrogen pollutants is realized.
Description
Technical field
The present invention can a kind of eutrophication fluviolacustrine deposit thing of eutrophication sediment remediation system exploration of aeration method of to repair or technique by building lotus rhizome shape.
Background technology
More than the content of the pollutents such as the nutritive salt in eutrophication settling, the heavy metal decades of times often in overlying water, pollutent wherein produces biological magnification by food chain and enters human body, threatens to HUMAN HEALTH; And pollutent can come back in water body by effects such as dissolving, parsing and biological decomposition, becomes secondary pollution source.Therefore, after external source pollution obtains control, in settling, the removal of pollutent has more importantly meaning to the lake restoration of the ecosystem of eutrophication river.It is one of common methods controlling pollutent release in settling that original position covers.Original position soverlay technique is that the covering material such as rough sand, soil is covered settling top layer, isolation pollutent and overlying water, hinder the enrichment in vivo of some toxic substance, stop the migration of pollutent and the settling flux of particulate matter in settling, reduce the flux that in settling, pollutent spreads in overlying water.When covering material is saturated, the risk of polluted bed mud to Environmental Health there will be again, because between water/sediment interface, dissolved oxygen content is low, covering material regeneration difficulty, utilization ratio is not high, and the large quantity of material dropped into has considerable influence to bottom-dwelling, destroys the benthic eubiosis.
Through finding the literature search of prior art, Chinese patent application 201210123999.X proposes one " a kind of Liner type sediment ecological restoration system ", and liner is covered in polluted bed mud top, has the effect of absorption retardance pollutent, can compacting bed mud, preventing pollution sediments re-suspension; Chinese patent application 201210276651.4 " rivers and lakes heavy metal polluted bed mud in-situ covering method and device ", iron tailings and cement are added to bed mud top layer, form solidification tectum, effectively prevent sediments re-suspension, intercept the release of deep layer sediment pollution to the migration of overlying water, decrease the disadvantageous effect for the treatment of processes to overlying water; Chinese patent application 200910053309.6 " construct in eutrophic water sediment layer the end dwell the method for microbial layer ", cleaned by natural seashell and activate back loading nitration denitrification microorganism, form mineralising stabilizing layer on bed mud top layer, stop the release of nutritive salt in bed mud; Chinese patent application 201210273969.7 " pollution of river sediment in-situ ecological restoring method ", on the bed mud in river course, lay upper, middle and lower three layers plant raw eco-concrete, the heavy metal in bed mud is prevented to enter water body, cut off the pollution channel of source of pollution, not easily produce secondary pollution, and absorb the heavy metal in bed mud by submerged plant.But these methods only highlight the stop to sediment contamination release, do not consider the removal that pollutent is basic from bed mud, coverture is generally permanent is trapped in original place, and not easily remove, this changes bottom environment greatly; Meanwhile, due to dissolved oxygen deficit near tectum, covering material is difficult to regeneration, and the ability removing pollutent slows down in time.
How to overcome the deficiencies in the prior art and become one of emphasis difficult problem urgently to be resolved hurrily in the restoration of the ecosystem of eutrophication settling.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art and provide lotus rhizome shape can the eutrophication sediment remediation system of aeration, the present invention not only has the advantage of organic pollutant in permanently effective removal settling and nutritive salt, and there is the advantage of good looking appearance, the simple and economical practicality of structure, be applicable to improvement and the reparation of common eutrophication surface deposit.
Can the eutrophication sediment remediation system of aeration according to lotus rhizome shape proposed by the invention, it comprises by three blade wind-wheels, protective guard, crankshaft-flywheel group, yaw rudder, union lever, piston, aeration cylinder, the wind energy aeration body of check valve composition, it is characterized in that wind energy aeration body with by bottom bracket bearing, straight-through rotating joint, the Universal rotary of aeration tube composition connects aerator body and the plant floating body be made up of framework and emergent and submerged plant, transmission aeration tube, threeway, solarization air cap, biozeolite, the lotus rhizome shape matrix body that mesh bag forms and the nitrobacteria strengthening body be made up of biological ceramics ring and nylon rope are from top to bottom connected successively, floating plant body is connected by traction rope with lotus rhizome shape matrix body.Wherein: the biological ceramics ring in nitrobacteria strengthening body and the biozeolite in lotus rhizome shape matrix body are first through microorganism colonization process; Transmission aeration tube and biozeolite are housed in the mesh bag of lotus rhizome shape matrix body, nylon rope in nitrobacteria strengthening body will be equipped with transmission aeration tube and the mesh bag of biozeolite is bundled into lotus rhizome shape, and lotus rhizome shape matrix body and nitrobacteria strengthen that body is crisscross is bundled into gauze pad shape; Aeration cylinder is connected by straight-through rotating joint with aeration tube, and the bottom of aeration cylinder is provided with the screw thread suited mutually with straight-through rotating joint; Bottom bracket bearing one end and aeration cylinder are by being weldingly connected, and the other end is fixedly connected with the mao bamboon of framework with Stainless Steel Wire by nut; In lotus rhizome shape matrix body transmission aeration tube one end sealing, the other end is connected aerator body aeration tube with Universal rotary is connected by threeway, in each lotus rhizome shape matrix body have 2 transmission aeration tubes.
The principle that the present invention realizes is: biozeolite physics by the ammonia nitrogen in the effect quick adsorption water/sediment interfaces such as absorption and ion-exchange, and stores, thus suppresses the release of settling ammonia nitrogen and cut down overlying water ammonia nitrogen; Then the biology in situ regeneration of denitrogenation and zeolite is realized by the synchronous heterotrophic nitrification of microorganism and the assimilation effect of aerobic denitrification and submerged plant.Biozeolite in lotus rhizome shape matrix body and nitrobacteria strengthen allotrophic nitrobacteria accompanying on the biological ceramics ring in body when oxygen abundance, be nitrous oxide, nitrite nitrogen, nitrate nitrogen by nitrification by the mineralized nitrogen in overlying water and interstitial water, thus the ammonia nitrogen concentration in overlying water and sediment interstitial water is reduced, promote that the ammonia nitrogen solution of adsorbing in biozeolite and biological ceramics ring is drawn onto in overlying water and interstitial water, thus achieve the biology in situ regeneration of biozeolite and biological ceramics ring; The inorganic nitrogens such as ammonia nitrogen, nitrite nitrogen and nitre nitrogen as the nitrogenous source of microbial bacterial and submerged plant growth, can be converted into organonitrogen by bio assimilated effect, and along with the harvesting of submerged plant, realize denitrogenation; Aerobic denitrifying bacteria in addition on biozeolite and biological ceramics ring, nitrite nitrogen, nitre nitrogen, organonitrogen being converted into nitrogen by denitrification, realizes the denitrogenation of system.Lotus rhizome shape matrix body of the present invention not only can be the biofilm formation growth carrier that microorganism provides safe, and in wind energy explosive gas and Universal rotary linker and lotus rhizome shape matrix body, contained transmission aeration tube is that water/sediment interface provides enough dissolved oxygens.
The present invention compared with prior art its remarkable advantage is:
One is stop sedimental settling flux.Strengthening body by lotus rhizome shape matrix body and nitrobacteria, to be bundled into the water-permeable covering gauze pad good, settling can not be hindered to be compacted the upper current downflow of process intermediate gap water, increase the degree of compactness of bed mud, stop the settling flux of bed mud.
Two is that Nitrogen removal effect is remarkable.By the adsorption of biozeolite and biological ceramics ring, pollutent between water/sediment interface is concentrated on lotus rhizome shape matrix body in a large number and nitrobacteria is strengthened in body, then bioavailable by the assimilation of microbiological deterioration and waterplant, prevent nitrogen secondary from discharging, realize the denitrogenation of system.
Three is that coverture is removable.System has traction rope, and covering material is designed to as a whole, and system removes conveniently, and sedimental physical environment changes less, and the biozeolite shifted out and biological ceramics ring can by decontamination process, recycle.
Four is to realize the oxygen enrichment between water/sediment interface.Solarization air cap on transmission aeration tube can be formed at water/sediment interface and hold oxygen layer uniformly, strengthen the ability of biozeolite and biological ceramics ring exchange ammonium ion, contribute to playing the effect that lotus rhizome shape matrix body and nitrobacteria strengthen aerobic microbiological in body, the removal ability of pollutent between enhanced deposition thing-water termination.
The present invention can be the recovery supplying method of lake, eutrophication river health, realizes sedimental purification, has that repairing effect is good, expense is low, a function such as construction and maintenance management convenience, non-secondary pollution.
Accompanying drawing explanation
Fig. 1 is that the lotus rhizome shape that proposes of the present invention can the structural representation of eutrophication sediment remediation system of aeration.
Fig. 2 is the structural representation that the lotus rhizome shape matrix body that proposes of the present invention and nitrobacteria strengthen body.
Fig. 3 is that the Universal rotary that the present invention proposes connects aerator body structural representation.
Wherein: 1, wind energy aeration body; 2, Universal rotary connects aerator body; 3, floating plant body; 4, lotus rhizome shape matrix body; 5, nitrobacteria strengthening body; 6, traction rope; 7, three blade wind-wheels; 8, protective guard; 9, crankshaft-flywheel group; 10, yaw rudder; 11, union lever; 12, piston; 13, aeration cylinder; 14, check valve; 15 bottom bracket bearings; 16, straight-through rotating joint; 17 aeration tubes; 18, framework; 19, biological ceramic particle plant-growth bag; 20, emergent; 21, submerged plant; 22, aeration tube is transmitted; 23, threeway; 24, solarization air cap; 25, biozeolite; 26, mesh bag; 27, biological ceramics ring; 28, nylon rope.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Composition graphs 1, the lotus rhizome shape that the present invention proposes can the eutrophication sediment remediation system of aeration, it is by three blade wind-wheels 7, protective guard 8, crankshaft-flywheel group 9, yaw rudder 10, union lever 11, piston 12, aeration cylinder 13, the wind energy aeration body 1 that check valve 14 forms, with by bottom bracket bearing 15, straight-through rotating joint 16, the Universal rotary that aeration tube 17 forms connects aerator body 2, with by framework 18, the plant floating body 3 that biological ceramic particle plant-growth bag 19 and emergent 20 form, with submerged plant 21, transmission aeration tube 22, threeway 23, solarization air cap 24, biozeolite 25, the lotus rhizome shape matrix body 4 that mesh bag 26 forms and the nitrobacteria strengthening body 5 be made up of biological ceramics ring 27 and nylon rope 28 are from top to bottom connected successively, floating plant body 3 is connected by traction rope 6 with lotus rhizome shape matrix body 4.Wherein:
Described wind energy aeration body 1 is connected aerator body 2 mode of operation with Universal rotary is: three blade wind-wheels 7 are moved in wind, the piston 12 in aeration cylinder 13 is driven successively by crankshaft-flywheel group 9 and union lever 11, continuous pressurized air aeration oxygen enrichment, plural threaded hole is established in aeration cylinder 13 bottom, the size of threaded hole is arranged agrees with mutually with straight-through rotating joint 17, check valve 14 is equipped with at each threaded hole hole place, and piston 12 pressurized air passes through check valve 14 through aeration tube 17 and transmission aeration tube 22 aeration oxygen enrichment; At the outer setting protective guard 8 of crankshaft-flywheel group 9 and union lever 11, this protective guard 8 is fixedly connected with yaw rudder 10, aeration cylinder 13 and bottom bracket bearing 15 coaxial welding, and one end of straight-through rotating joint 16 connects aeration cylinder 13, and the other end connects aeration tube 17.Universal rotary connects bottom bracket bearing 16 in aerator body 2 and straight-through rotating joint 17 can rotate freely by box haul 360 degree, ensure that to carry out oxygen enrichment to system when any wind direction; Sufficient oxygen can strengthen the carrying out of nitrification between water/sediment interface, consumes organic carbon, improves the removal efficiency of organic pollutant between water/sediment interface.
Described Universal rotary is connected aerator body 2 and is fixedly connected with the framework 18 of plant floating body 3 with Stainless Steel Wire by nut, biological ceramic particle plant-growth bag 19 is by the nylon net bag that particle diameter is the biological ceramic particle of 1-2cm is housed, emergent 20 planted by biological ceramic particle plant-growth bag 19, emergent 20 can mater convolvulus, one or more in Wildcelery Herb and Caulis Miscanthis floriduli, biological ceramic particle plant-growth bag 19 is fixed on framework 18, framework 18 is order character form structure, and the material of framework 18 is mao bamboon; Nutritive salt in the adsorbed water body of biological ceramic particle, the assimilation then through emergent is converted into plant tissue, by realizing the removal of water pollutant to the harvesting of emergent.
Transmission aeration tube 22 and biozeolite 25 are housed in the mesh bag 26 of described lotus rhizome shape matrix body 4, submerged plant 21 is planted in is equipped with in the mesh bag 26 of biozeolite 25, submerged plant 21 is one or more in hornwort, water caltrop, black algae and p.malaianus, submerged plant absorbs the nitrogen phosphorus in water, by the nutritive salt in its Root Absorption settling by its cauline leaf.Nylon rope 28 in nitrobacteria strengthening body 5 will be equipped with transmission aeration tube 22 and the mesh bag 26 of biozeolite 25 is bundled into lotus rhizome shape, and lotus rhizome shape matrix body 4 and nitrobacteria strengthen that body 5 is crisscross is bundled into covering gauze pad; Transmission aeration tube 22 one end sealing in lotus rhizome shape matrix body 4, the other end is connected aerator body 2 aeration tube 17 with Universal rotary is connected by threeway 23, have 2 to transmit aeration tube 22 in each lotus rhizome shape matrix body 4, the existence of mesh bag 26 avoids the microorganism that biozeolite 25 adheres to and is eaten by large-scale hydrocoles and fish.Floating plant body 3 is connected by traction rope 6 with lotus rhizome shape matrix body 4.Biological ceramics ring 27 in nitrobacteria strengthening body 5 and the biozeolite 25 in lotus rhizome shape matrix body 4 are first through microorganism colonization process.Water inlet Pollutant levels during microorganism colonization are as follows: COD concentration 70 ± 3.3mg/L, and the concentration of total nitrogen is 21 ± 1.5mg/L, and the average quality concentration of ammonia nitrogen is 10 ± 0.7mg/L, and the concentration of total phosphorus is 2.2 ± 0.5mg/L, pH value 7-8, two weeks biofilm time.
Below in conjunction with Fig. 1, Fig. 2 and Fig. 3, further illustrate concrete operation step of the present invention:
The lotus rhizome shape that the present invention proposes can the eutrophication sediment remediation system of aeration, comprise wind energy aeration body, Universal rotary connect aerator body, plant floating body, lotus rhizome shape matrix body, nitrobacteria strengthening body be from top to bottom connected successively, floating plant body is connected by traction rope with lotus rhizome shape matrix body.
Step one: the outside screw shape according to straight-through rotating joint 16 bores two internal thread holes agreed with mutually with size in the bottom of aeration cylinder 13, makes framework 19 with mao bamboon, as shown in Figure 1, and the order font bamboo raft made with the mao bamboon that 6 diameters are about 0.1m.In the mid-way of bamboo raft, bottom bracket bearing 15 is installed, at top coaxial welding aeration cylinder 13 and the protective guard 8 of bottom bracket bearing 15, then crankshaft-flywheel group 9 one end is connected three blade wind-wheels 7, the other end is articulated and connected bar 11, union lever 11 the other end connects piston 12, install protective guard 8 in crankshaft-flywheel group 9 and union lever 11 outside, yaw rudder 10 is fixedly connected on protective guard 8; In each hole of aeration cylinder 13 bottom, check valve 14 and straight-through rotating joint 16 are installed, connect aeration tube 17 in the lower port of straight-through rotating joint 16.
Step 2: microorganism colonization process is carried out to haydite, zeolite and ceramic ring.Water inlet Pollutant levels are as follows: COD concentration 70 ± 3.3mg/L, the concentration of total nitrogen is 21 ± 1.5mg/L, and the average quality concentration of ammonia nitrogen is 10 ± 0.7mg/L, and the concentration of total phosphorus is 2.2 ± 0.5mg/L, pH value 7-8, and the biofilm time is two weeks.
Step 3: make biological ceramic particle plant-growth bag 19 with biological ceramic particle, nylon wire, the particle diameter of biological ceramic particle is 1.5-2cm, nylon wire aperture is 1cm, then on biological ceramic particle plant-growth bag 19, plant mater convolvulus, then biological ceramic particle plant-growth bag 19 is fixedly connected on framework 18 with nylon rope.
Step 4: by the biozeolite after microorganism colonization 25, two transmission aeration tube 2) be contained in long strip shape mesh bag 26, the particle diameter of biozeolite 25 is 2-3cm, the mesh of mesh bag 26 is 1cm, transmission aeration tube 22 arranges the solarization air cap 24 that aperture is about 2mm, 0.5cm is spaced apart between two solarization air caps 24, the threeway 23 of two transmission aeration tubes 22 connects, and the other end of threeway 23 connects aeration tube 17; Biological ceramics ring 27 to be enclosed within nylon rope 28 and to be made into nitrobacteria strengthening body 5, the internal diameter of biological ceramics ring 27 is 1cm, and the external diameter of nylon rope is 1cm.
Step 5: the mesh bag 26 that transmission aeration tube 22 and biozeolite 25 are housed is bundled into lotus rhizome shape matrix body 4 with the nylon rope 28 in nitrobacteria strengthening body 5, lotus rhizome shape matrix body 4 and nitrobacteria strengthen that body 5 is crisscross is bundled into covering gauze pad, water caltrop is planted in lotus rhizome shape matrix body 4, with traction rope 6, lotus rhizome shape matrix body 4 is connected on the framework 18 of floating plant body 3.
Below further illustrate the concrete comparison example of the invention process usefulness:
Arrange lotus rhizome shape and the eutrophication sediment remediation system water tank of aeration and original position can cover water tank, to carry out simultaneous test, the specification of water tank is long × wide × dark=131cm × 83cm × 63cm, is the settling of 10cm at water tank bottom laying depth.Gather the surface deposit of nutrition enriched shallow lake with the gloomy sludge mining device of Peter, cross 100 mesh sieves, remove coarse grain and plant and animal residues, then fully mix, be laid on water tank bottom, more slowly inject lake water along pool wall, leave standstill 10 days.Test water and settling are from same Hyper-eutrophic.Lotus rhizome shape can eutrophication sediment remediation system framework length × wide=60cm × 40cm, the mao bamboon external diameter 0.1m of aeration; The thick external diameter of lotus rhizome shape matrix body is 6cm, and thin external diameter is about 3cm, and length is 40cm, is 60cm × 40cm with 6 lotus rhizome shape matrix bodies and the nitrobacteria gauze pad talked about by force made by body, and each lotus rhizome shape matrix body plants 12 strain water caltrops.The size of biological ceramic particle plant-growth bag is 10cm × 6cm × 6cm, and plantation 6 strain mater convolvulus is wrapped in each biological ceramic particle plant-growth, floating plant body is provided with altogether 6 biological ceramic particle plant-growth bags.Original position covers water tank and adopts covering material to be zeolite and ceramic ring, with lotus rhizome shape can be used in the eutrophication sediment remediation system water tank of aeration biozeolite and biological ceramics ring identical in quality, lay area identical.For fully demonstrating the effect of wind energy, the place of testing wind speed is larger is carried out.
Test lasts 20 days.Duration of test, mater convolvulus and water caltrop are at well-grown, and during off-test, lotus rhizome shape the eutrophication sediment remediation system water tank of aeration and original position can cover sediment remediation effect in water tank in table 1.Test-results shows: can lotus rhizome shape can the eutrophication sediment remediation system of aeration remarkable to the pollutant removal in water/sediment interface.
As mentioned above, we are described according to aim of the present invention completely, but the present invention is not limited to above-described embodiment and implementation method.Different changes and enforcement is carried out in the scope that the practitioner of correlative technology field can permit at technological thought of the present invention.
Claims (8)
1. lotus rhizome shape can the eutrophication sediment remediation system of aeration, and its feature connects aerator body (2), plant floating body (3), lotus rhizome shape matrix body (4) and nitrobacteria strengthening body (5) by it by wind energy aeration body (1), Universal rotary and forms; Wherein said wind energy aeration body (1) is made up of three blade wind-wheels (7), protective guard (8), crankshaft-flywheel group (9), yaw rudder (10), union lever (11), piston (12), aeration cylinder (13), check valve (14); Described Universal rotary connects aerator body (2) and is made up of bottom bracket bearing (15), straight-through rotating joint (16), aeration tube (17); Described plant floating body (3) is made up of framework (18), biological ceramic particle plant-growth bag (19) and emergent (20); The lotus rhizome shape matrix body (4) that lotus rhizome shape matrix body (4) is made up of submerged plant (21), transmission aeration tube (22), threeway (23), solarization air cap (24), biozeolite (25), mesh bag (26); Nitrobacteria strengthening body (5) is made up of biological ceramics ring (27) and nylon rope (28);
From top to bottom be connected successively, floating plant body (3) is connected by traction rope (6) with lotus rhizome shape matrix body (4).Wherein: transmission aeration tube (22) and biozeolite (25) are housed in the mesh bag (26) of lotus rhizome shape matrix body (4), the mesh bag (26) that nylon rope (28) in nitrobacteria strengthening body (5) will be equipped with transmission aeration tube (22) and biozeolite (25) is bundled into lotus rhizome shape, and lotus rhizome shape matrix body (4) and nitrobacteria strengthen that body (5) is crisscross is bundled into covering gauze pad.
2. lotus rhizome shape according to claim 1 can the eutrophication sediment remediation system of aeration, it is characterized in that the material of described transmission aeration tube (22) is pvc pipe or the stainless steel tube of hard, the material of aeration tube (17) is silica gel.
3. lotus rhizome shape according to claim 1 can the eutrophication sediment remediation system of aeration, it is characterized in that described aeration cylinder (13) is connected by straight-through rotating joint (16) with aeration tube (17), the bottom of aeration cylinder (13) is provided with the screw thread agreed with mutually with straight-through rotating joint (16).
4. lotus rhizome shape according to claim 1 can the eutrophication sediment remediation system of aeration, it is characterized in that described bottom bracket bearing (15) one end and aeration cylinder (13) are by being weldingly connected, the other end is fixedly connected with the mao bamboon of Stainless Steel Wire with framework (18) by nut.
5. lotus rhizome shape according to claim 1 can the eutrophication sediment remediation system of aeration, it is characterized in that the biological ceramics ring (27) in described nitrobacteria strengthening body (5) and the biozeolite (25) in lotus rhizome shape matrix body (4) are first through microorganism colonization process.
6. lotus rhizome shape according to claim 1 can the eutrophication sediment remediation system of aeration, it is characterized in that transmission aeration tube (22) one end sealing in described lotus rhizome shape matrix body (4), the other end is connected aerator body (2) aeration tube (17) with Universal rotary is connected by threeway (23), has 2 to transmit aeration tube (22) in each lotus rhizome shape matrix body (4).
7. lotus rhizome shape according to claim 1 can the eutrophication sediment remediation system of aeration, it is characterized in that the submerged plant (21) of described waterplant is hornwort, water caltrop, one or more in black algae and p.malaianus.
8. lotus rhizome shape according to claim 1 can the eutrophication sediment remediation system of aeration, it is characterized in that the emergent (20) of described waterplant is mater convolvulus, one or more in Wildcelery Herb and Caulis Miscanthis floriduli.
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