CN104355415B - A kind of original position cuts down the biologic float bed of heavy metal pollution of water body - Google Patents
A kind of original position cuts down the biologic float bed of heavy metal pollution of water body Download PDFInfo
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- CN104355415B CN104355415B CN201410725016.9A CN201410725016A CN104355415B CN 104355415 B CN104355415 B CN 104355415B CN 201410725016 A CN201410725016 A CN 201410725016A CN 104355415 B CN104355415 B CN 104355415B
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
- C02F3/322—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae use of algae
- C02F3/325—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae use of algae as symbiotic combination of algae and bacteria
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The invention discloses the biologic float bed of a kind of original position abatement heavy metal pollution of water body, it includes housing (2), the packed bed (3) being contained in housing (2), the super enriching plant (1) being grown on packed bed (3) and the Magnetictaxis bacteria being enriched in packed bed (3).The invention also discloses a kind of method utilizing above-mentioned biologic float bed original position abatement heavy metal pollution of water body, it comprises the following steps: a. biologic float bed is placed in described in contaminated by heavy metals water body；B. by described chlorella, Magnetictaxis bacteria and super enriching plant enriching heavy metal；C. regularly gather in super enriching plant, remove the heavy metal of enrichment.The heavy metal in water body can inexpensively, efficiently, be harmlessly removed by the biologic float bed of the present invention and method.
Description
Technical field
The present invention relates to a kind of biologic float bed, be specifically related to the super enriching plant-microorganism of a kind of original position abatement heavy metal pollution of water body-oxygen release filler association biologic float bed.
Background technology
Heavy metal pollution of water body is always up one of main water environmental problems currently urgently to be resolved hurrily, heavy metal retaining in water body, accumulates and the feature such as animal migration adds the difficulty that heavy metal in water purifies.Simultaneously as heavy metal non-degradable, and can be enriched with in the animal and plant body in water body, it is detrimental to health again through approach such as food chains so that how efficiently to control heavy metal pollution of water body and become the water process problem urgently broken through.
The technology being currently used for purifying water body heavy metal pollution mainly includes physical treatment method, chemical treatment method and bioremediation three class.
Physics and chemical treatment method mainly have cohesion-flocculence, active carbon absorption technology, floatation, chelating resin method, chemical precipitation method, membrane separation process, ion exchange, electrodeionization technology etc..Patent documentation if Authorization Notice No. is CN102001779B discloses a kind of electricity flocculation-active carbon adsorption and processes the method containing heavy metal-containing electroplating effluent, first it make waste water enter electricity flocculation unit, electricity flocculation electro air supporting effect is utilized to remove plurality of heavy metal ion, then quiet heavy waste water is so that great quantity of floc air supporting or precipitation, charcoal treatment unit is discharged and made it into middle waste water, utilizes adsorption to remove residual heavy metal.Although these method treatment effeciencies are high, the cycle is short, but relatively costly, some is likely to also can cause secondary pollution.
Bioremediation mainly includes artificial swamp, bio-oxidation pond and microorganism, technique for gene engineering etc..Patent documentation if application publication number is CN1022994411A discloses the application of a kind of microorganism processing heavy metal pollution in wastewater and adsorbent, in super enriching plant Herba Solani Nigri, isolate the endophyte LK9 with Cd, Cu, Pb resistance, after its amplification culture being collected, prepare into powder sorbent；When processing heavy metal polluted waste water, described adsorbent is added in waste water, centrifugation or isolated by filtration adsorbent after absorption certain time, can effectively remove Cd2+、Cu2+、Pb2+Etc. heavy metal ion.Biological treating has the features such as effective, cheap and simple and easy to do, but lacks wide variety of universality, and it is longer to build the stable ecological recovery system cycle, it is impossible to purifying water body heavy metal pollution in time.
Therefore, from Financial cost and resource angularly, explore the innoxious heavy metal in water purification method of economical and efficient and device is the difficult point that current heavy metal pollution of water body is administered.
Summary of the invention
Propose the present invention to solve the problems referred to above, it is an object of the invention to provide rapidly and efficiently, the method for the biologic float bed and original position abatement heavy metal pollution of water body of the original position abatement heavy metal pollution of water body of with low cost and environmental sound.
First aspect present invention relates to the biologic float bed of a kind of original position abatement heavy metal pollution of water body, and it includes housing 2, the packed bed 3 being contained in housing 2, the super enriching plant 1 being grown on packed bed 3 and the Magnetictaxis bacteria being enriched in packed bed 3.
In preferred embodiments, described packed bed 3 includes the activated sludge after domestication, chlorella (ChlorellapyrenoidosaChick) and oxygen release filler, the mass ratio of described activated sludge and oxygen release filler is 10:1-1:10, and wherein chlorella and oxygen release filler cooperatively form micro-aerobic environment.In a further preferred embodiment, described oxygen release filler comprises metal peroxides or SODIUM PERCARBONATE, also comprises calcium phosphate bone cement, dead plaster or clay；Described metal peroxides includes sodium peroxide, calper calcium peroxide or potassium peroxide.Described activated sludge can come from sewage treatment plant.Described chlorella and oxygen release filler cooperatively form the reason of micro-aerobic environment and include two aspects, and during first aspect, chlorella itself is the plant that photosynthesis is very strong, and when there being illumination, itself can pass through photosynthesis releasing oxygen；Second aspect is containing metal peroxides or SODIUM PERCARBONATE in oxygen release filler, they and water react and can produce oxygen, in addition to that avoids that oxygen produces is too fast, oxygen release filler adds the material such as calcium phosphate bone cement, dead plaster or clay and controls contacting of metal peroxides or SODIUM PERCARBONATE and water, make oxygen release filler sustained release oxygen, thus micro-aerobic environment of more than 60 days in biologic float bed filler can be realized, without changing filler.It addition, chlorella is possible not only to oxygen supply, itself also there is the function of certain enriching heavy metal.
In preferred embodiments, containing magnetic Fe in described oxygen release filler3O4Powder, to be provided about micro-magnetic field at described filler, is conducive to being gathered in by Magnetictaxis bacteria around this oxygen release filler particles.
In a more preferred embodiment, possibly together with equally distributed simple substance sulphur granule in described oxygen release filler.Inventor finds in an experiment, and after adding simple substance sulphur granule, removal efficiency of heavy metals can be greatly improved.To this, inventor there is no reasonable dismissal, the reason of a kind of supposition is as follows: after heavy metal is enriched with by Magnetictaxis bacteria, enter in bacterial cell body, now, heavy metal is because being in bacterial cell body, so not being especially easy directly absorbed by root system of plant, and the existence of simple substance sulphur granule, it is possibly able to the heavy metal promoting Magnetictaxis bacteria it to be enriched with no longer to be held permanently in the cyton of antibacterial, but it is discharged in the waters near filler with some form, it is easier to be absorbed by thickly dotted root system of plant herein, therefore improve the secondary bioaccumulation efficiency of root system of plant.
The most preferred embodiment is to contain magnetic Fe in oxygen release filler simultaneously3O4Powder and simple substance sulphur granule, the former is gathered in Magnetictaxis bacteria near filler, is more beneficial for the facilitation of the above-mentioned raising heavy metal accumulation efficiency of the latter.
Wherein said oxygen release filler can be prepared by the following method: metal peroxides or SODIUM PERCARBONATE and calcium phosphate bone cement and dead plaster and clay is mixed homogeneously by a certain percentage, and adds optional magnetic Fe as required3O4Powder and/or simple substance sulphur granule, the concrete ratio of each material can regulate as required, then mixture adds water into mud and sends into pelletize in comminutor；The solid particle of gained is immersed in acrylic acid-itaconic acid copolymer fluid, take out after soaking 1～3 minute, drying solidification at 18～25 DEG C, obtain metal peroxide-based oxygen slow release composite material, wherein solid particle is 1: 3～1: 10 with the mass ratio of acrylic acid-itaconic acid copolymer fluid.When this oxygen release filler is used for repairing contaminated water, can greatly slow down the reaction rate of metal peroxides and water, reduce the deadweight loss of metal peroxides, improve service efficiency and the life cycle of metal peroxides.
Wherein said chlorella is cultivated by following cultural technique: in the early spring, arranges the shallow-water tank of 500-1000L, piles tank with 3 parts of the net filtration sea water of minimum mesh, fresh water 1 part；Add sulfur ammonium 300g, calcium superphosphate 50g to every 1000kg water, be made into culture fluid；Putting into chlorella algae kind more wherein, after 1 month, chlorella gets final product flourish.
In preferred embodiments, described super enriching plant is terrestrial plant, including Herba Solani Nigri (SolanumnigrumL.), Herba pteridis vittatae (PterisvittataL.), Sedum alfredii Hance (SedumalfrediiHance) or Radix Phytolaccae (PhytolaccaacinosaRoxb).Described super enriching plant can be enriched with the different heavy metal such as arsenic, cadmium, manganese, zinc, it is possible to selects super enriching plant according to the kind of Heavy Metals in Waters.
In preferred embodiments, described Magnetictaxis bacteria is selected from aquatic Spirillum (Aquaspirillum) or addicted to gallbladder Coccus (Bilophococcus), including AquaspirillumMGT-1, AquaspirillumAMB-1, WD-1 or HM-1.
In preferred embodiments, described Magnetictaxis bacteria by the permanent magnet being arranged on outside biologic float bed housing 2 be enriched in biologic float bed in, to keep the concentration of Magnetictaxis bacteria.In a more preferred embodiment, the position arranging described permanent magnet makes magnetic field be distributed up and down so that Magnetictaxis bacteria is enriched in the root system of plant place bottom filler.In another alternate embodiment, possibly together with magnetic Fe in described oxygen release filler3O4Powder, to be provided about micro-magnetic field at described filler, advantageously in being gathered in around this filler particles by Magnetictaxis bacteria.Thus, heavy metal after Magnetictaxis bacteria first time enrichment, second time enrichment can be carried out through the root system of super enriching plant, thus transferring in the stem and leaf of plant from water body, again through the mode of harvesting plant heavy metal be moved away and carrying out centrally disposing or harmless treatment of other.
In preferred embodiments, the described biologic float bed guide shell 5 including being positioned at below housing 2, it is furnished with capillary fiber bundle 4 inside it.The top of this capillary fiber bundle is close to water surface, and bottom is then close to the bottom.When cavity place topmost surface is directly subjected to shine upon, evaporated by the water at capillary fiber bundle top, consequent negative pressure and capillarity, water at deep water place is flowed along capillary fiber bundle to water surface, the biologic float bed bottom thus being led by depths water body, is conducive to processing the heavy metal in the water body of depths.It is placed in water body by biologic float bed, it is possible to enrichment and the heavy metal ion removed in different depth water body.
Second aspect present invention relates to a kind of biologic float bed method carrying out original position abatement heavy metal pollution of water body according to the first aspect of the invention, and it comprises the following steps:
A. biologic float bed it is placed in described in contaminated by heavy metals water body；
B. first time enrichment is carried out by described chlorella and Magnetictaxis bacteria heavy metal, again through described super enriching plant for the heavy metal after Magnetictaxis bacteria is enriched with being carried out second time enrichment.
In preferred embodiments, it is possible to regularly gather in super enriching plant, the heavy metal of enrichment is removed.Harvesting interval can be determined according to the growth cycle of different plants.
In preferred embodiments, described chlorella and Magnetictaxis bacteria are for first time enriching heavy metal, and described super enriching plant for carrying out second time enrichment to the high concentration metal after Magnetictaxis bacteria is enriched with.By chlorella-Magnetictaxis bacteria-super enriching plant association, it is possible to make heavy metal accumulation speed significantly improve, shorten the heavy metal accumulation time, improve Heavy Metals in Waters removal efficiency.
Beneficial effects of the present invention:
(1) by the synergism of the oxygen release filler in packed bed and chlorella so that the micro-aerobic environment of the medium-term and long-term maintenance of biologic float bed filler, without more conversion materials, has been saved cost and made operating process simpler convenient；
(2) by arranging magnetic field or adding magnetic Fe in oxygen release filler3O4Powder, makes, around the root system of plant bottom the Magnetictaxis bacteria orienting enriching packed bed in floating bed or around oxygen release filler, to improve the heavy metal concentration around super enriching plant root system, be conducive to super enriching plant heavy metal to carry out secondary enrichment；
(3) the biologic float bed of super enriching plant-chlorella-Gao Magnetictaxis bacteria concentration is built, it is enriched with on the basis of Heavy Metals in Waters ion by the synergism of super enriching plant-chlorella-Gao Magnetictaxis bacteria concentration at Magnetictaxis bacteria and chlorella, realizes the enrichment of heavy metal further；The structure of magnetic field-Magnetictaxis bacteria-chlorella-oxygen release filler-super enriching plant association makes the accumulation ability of this biologic float bed heavy metal exceed common biologic float bed 1000 times (wait and heavily gather in phytomass), and enriching heavy metal speed significantly improves, shorten the heavy metal accumulation time, improve Heavy Metals in Waters removal efficiency；
(4) by the setting of guide shell below floating bed and capillary fiber bundle therein, enable the water of water body depths to flow to water surface, therefore can be enriched with and remove the heavy metal ion of water body depths, improve the biologic float bed removal ability to Heavy Metals in Waters；
(5) there is simple substance sulphur granule in oxygen release filler, heavy metal accumulation efficiency can be improved further.
(6) present invention's is biologic float bed with low cost, and filler therein can keep micro-aerobic environment of more than 60 days without changing filler, safeguards easily, than common biologic float bed more efficiently and significantly reduce cost, in enrichment process, unharmful substance produces.
Accompanying drawing explanation
Fig. 1 is the biologic float bed schematic diagram of original position of the present invention abatement heavy metal pollution of water body.
Wherein: 1. super enriching plant；2. housing；3. packed bed；4. capillary fiber bundle；5. guide shell.
Detailed description of the invention
The present invention is further illustrated by the examples below, but should not be construed as limitation of the present invention.
Embodiment 1
The employing present invention's is biologic float bed, the activated sludge obtain municipal sewage plant and oxygen release filler are added thereto to chlorella again in the mixing of quality 5:1 ratio and form biologic float bed filler, and wherein oxygen release filler is calper calcium peroxide is the mixture of 1:3 with calcium phosphate bone cement weight ratio.This filler can realize 1 year stable micro-aerobic environment without replacing, arranges permanent magnet, to keep high Magnetictaxis bacteria concentration on biologic float bed housing simultaneously.Choosing that Herba Solani Nigri is this can the super enriching plant of cadmium, it is planted in biologic float bed filler, plant spacing be 20 strains/square metre, form the biologic float bed of super enriching plant-Gao Magnetictaxis bacteria concentration association, this biologic float bed is placed on by the water body of cadmium pollution, when temperature on average is 20-30 DEG C, Herba Solani Nigri of harvesting in every 60 days, in Herba Solani Nigri, the amount of cadmium is 120mg/kg dry weight, and Herba Solani Nigri is carried out post processing, thus the heavy metal cadmium eliminated in water body.
Embodiment 2
The employing present invention's is biologic float bed, the activated sludge obtain municipal sewage plant and oxygen release filler are added thereto to chlorella again in the mixing of quality 5:1 ratio and form biologic float bed filler, wherein oxygen release filler is calper calcium peroxide is the mixture of 1:3 with calcium phosphate bone cement weight ratio, this filler can realize 1 year stable micro-aerobic environment without replacing, permanent magnet is set on biologic float bed housing, to keep high Magnetictaxis bacteria concentration simultaneously.Choose this super enriching plant that can be enriched with arsenic of Herba pteridis vittatae, it is planted in biologic float bed filler, plant spacing be 20 strains/square metre, form the biologic float bed of super enriching plant-Gao Magnetictaxis bacteria concentration association, this biologic float bed is placed in the water body polluted by arsenic, when temperature on average is 20-30 DEG C, Herba pteridis vittatae of harvesting in every 60 days, the amount being enriched with arsenic in Herba pteridis vittatae is 110mg/kg dry weight, and Herba pteridis vittatae is carried out post processing, thus the heavy metal arsenic eliminated in water body.
Embodiment 3
The employing present invention's is biologic float bed, the activated sludge obtain municipal sewage plant and oxygen release filler are added thereto to chlorella again in the mixing of quality 5:1 ratio and form biologic float bed filler, wherein oxygen release filler is the mixture that weight ratio is 1:4 of SODIUM PERCARBONATE and clay, this filler can realize stable micro-aerobic environment of nearly half a year without replacing, permanent magnet is set on biologic float bed housing, to keep high Magnetictaxis bacteria concentration simultaneously.Choosing that Sedum alfredii Hance is this can the super enriching plant of enriched lead, it is planted in biologic float bed filler, plant spacing be 20 strains/square metre, form the biologic float bed of super enriching plant-Gao Magnetictaxis bacteria concentration association, this biologic float bed is placed on by the water body of lead contamination, when temperature on average is 20-30 DEG C, Sedum alfredii Hance of harvesting in every 55 days, in Sedum alfredii Hance, the amount of enriched lead is 130mg/kg dry weight, and Sedum alfredii Hance is carried out post processing, thus the heavy metal lead eliminated in water body.
Embodiment 4
The employing present invention's is biologic float bed, and the activated sludge obtain municipal sewage plant and oxygen release filler are added thereto to chlorella again in the mixing of quality 5:1 ratio and form biologic float bed filler, and wherein oxygen release filler is SODIUM PERCARBONATE and calcium phosphate bone cement and magnetic Fe3O4The weight ratio of powder is the mixture of 1:4:0.2, and this filler can realize 1 year stable micro-aerobic environment without replacing.Choosing that Radix Phytolaccae is this can the super enriching plant of enrichment manganese, it is planted in biologic float bed filler, plant spacing be 20 strains/square metre, form the biologic float bed of super enriching plant-Gao Magnetictaxis bacteria concentration association, this biologic float bed is placed on by the water body of pollution by manganese, when temperature on average is 20-30 DEG C, Radix Phytolaccae of harvesting in every 60 days, in Radix Phytolaccae, the amount of enrichment manganese is 94mg/kg dry weight, and Radix Phytolaccae is carried out post processing, thus the heavy metal manganese eliminated in water body.
Embodiment 5
The employing present invention's is biologic float bed, and the activated sludge obtain municipal sewage plant and oxygen release filler are added thereto to chlorella again in the mixing of quality 5:1 ratio and form biologic float bed filler, and wherein oxygen release filler is SODIUM PERCARBONATE: calcium phosphate bone cement: magnetic Fe3O4Powder: the weight ratio of simple substance sulphur granule is the mixture of 1:4:0.2:0.1, this filler can realize 1 year stable micro-aerobic environment without replacing.Choosing that Radix Phytolaccae is this can the super enriching plant of enrichment manganese, it is planted in biologic float bed filler, plant spacing be 20 strains/square metre, form the biologic float bed of super enriching plant-Gao Magnetictaxis bacteria concentration association, this biologic float bed is placed on by the water body of pollution by manganese, when temperature on average is 20-30 DEG C, Radix Phytolaccae of harvesting in every 60 days, in Radix Phytolaccae, the amount of enrichment manganese is 116mg/kg dry weight, and Radix Phytolaccae is carried out post processing, thus the heavy metal manganese eliminated in water body.
Comparative example 1
The employing present invention's is biologic float bed, but does not use Magnet or do not use magnetic Fe3O4Powder.The activated sludge obtain municipal sewage plant and oxygen release filler are added thereto to chlorella again in the mixing of quality 5:1 ratio and form biologic float bed filler, wherein oxygen release filler is the mixture that weight ratio is 1:3 of calper calcium peroxide and calcium phosphate bone cement, this filler can realize 1 year stable micro-aerobic environment without replacing, to keep high Magnetictaxis bacteria concentration.Choosing that Herba Solani Nigri is this can the super enriching plant of cadmium, it is planted in biologic float bed filler, plant spacing be 20 strains/square metre, form the biologic float bed of super enriching plant-Gao Magnetictaxis bacteria concentration association, this biologic float bed being placed on, in the water body of cadmium pollution, when temperature on average is 20-30 DEG C, is gathered in a Herba Solani Nigri in every 60 days, in Herba Solani Nigri, the amount of cadmium is 60mg/kg dry weight, and bioaccumulation efficiency is only the 50% of embodiment 1.
Comparative example 2
The employing present invention's is biologic float bed, but does not use chlorella and oxygen release filler.The activated sludge obtained municipal sewage plant, as biologic float bed filler, arranges permanent magnet, to keep Magnetictaxis bacteria concentration simultaneously on biologic float bed housing.Choosing that Herba Solani Nigri is this can the super enriching plant of cadmium, it is planted in biologic float bed filler, plant spacing be 20 strains/square metre, form the biologic float bed of super enriching plant-Gao Magnetictaxis bacteria concentration association, this biologic float bed being placed on, in the water body of cadmium pollution, when temperature on average is 20-30 DEG C, is gathered in a Herba Solani Nigri in every 60 days, in Herba Solani Nigri, the amount of cadmium is 80mg/kg dry weight, and bioaccumulation efficiency is only the 68% of embodiment 1.
Comparative example 3
Adopt common biologic float bed (namely not the using Magnetictaxis bacteria) of homalographic, the plantation this plant not having enriching heavy metal ability of Herba Scirpi Tabernaemontani, all the other conditions are identical with embodiment 1, plant spacing be 20 strains/square metre, this biologic float bed being placed on, in the water body of cadmium pollution, when temperature on average 20-30 DEG C, is gathered in a Herba Scirpi Tabernaemontani in every 60 days, in Herba Scirpi Tabernaemontani, the amount of cadmium is 2.4mg/kg dry weight, and bioaccumulation efficiency is only the 2% of embodiment 1.
Comparative example 4
Adopt common biologic float bed (namely not the using Magnetictaxis bacteria) of homalographic, all the other conditions are identical with embodiment 1, plantation Herba Solani Nigri kind can the super enriching plant of cadmium, plant spacing be 20 strains/square metre, this biologic float bed being placed on, in the water body of cadmium pollution, when temperature on average 20-30 DEG C, is gathered in a Herba Solani Nigri in every 60 days, in Herba Solani Nigri, the amount of cadmium is 30mg/kg dry weight, and bioaccumulation efficiency is only the 25% of embodiment 1.
Comparative example 5
The employing present invention's is biologic float bed, but does not use super enriching plant.The activated sludge obtain municipal sewage plant and oxygen release filler are added thereto to chlorella again in the mixing of quality 5:1 ratio and form biologic float bed filler, wherein oxygen release filler is calper calcium peroxide is the mixture of 1:3 with calcium phosphate bone cement weight ratio, this filler can realize 1 year stable micro-aerobic environment without replacing, to keep high Magnetictaxis bacteria concentration.The plantation this plant not having enriching heavy metal ability of Herba Scirpi Tabernaemontani, all the other conditions are identical with embodiment 1, plant spacing be 20 strains/square metre, this biologic float bed is placed on by the water body of cadmium pollution, when temperature on average 20-30 DEG C, Herba Scirpi Tabernaemontani of harvesting in every 60 days, in Herba Scirpi Tabernaemontani, the amount of cadmium is 12mg/kg dry weight, and bioaccumulation efficiency is only the 10% of embodiment 1.
By embodiment 1-4 it can be seen that the biologic float bed concentration effect for heavy metal of the present invention is excellent.By the comparison of embodiment 1-4 and comparative example 1-5 it can be seen that the packed bed that permanent magnet in the present invention, super enriching plant, Magnetictaxis bacteria and oxygen release filler and chlorella etc. are constituted plays important synergism for the effect realizing the present invention.Visible with the contrast of embodiment 4 by embodiments of the invention 5, when other conditions are approximate, oxygen release filler exist simple substance sulphur granule and will further improve heavy metal accumulation efficiency.
Claims (9)
1. original position abatement heavy metal pollution of water body is biologic float bed, and it includes housing (2), the packed bed (3) being contained in housing (2), the super enriching plant (1) being grown on packed bed (3) and the Magnetictaxis bacteria being enriched in packed bed (3).
2. according to claim 1 biologic float bed, wherein said packed bed (3) includes the activated sludge after domestication, chlorella (ChlorellapyrenoidosaChick) and oxygen release filler, the mass ratio of described activated sludge and oxygen release filler is 10:1-1:10, and wherein chlorella and oxygen release filler cooperatively form micro-aerobic environment.
3. according to claim 2 biologic float bed, wherein said oxygen release filler comprises metal peroxides or SODIUM PERCARBONATE, also comprises calcium phosphate bone cement, dead plaster or clay；Described metal peroxides is sodium peroxide, calper calcium peroxide or potassium peroxide.
4. according to claim 3 biologic float bed, wherein said oxygen release filler also comprises simple substance sulphur granule.
5. according to claim 3 biologic float bed, wherein said oxygen release filler also comprises magnetic Fe 3O4Granule.
6. according to claim 1 biologic float bed, wherein said super enriching plant (1) is terrestrial plant, including Herba Solani Nigri (SolanumnigrumL.), Herba pteridis vittatae (PterisvittataL.), Sedum alfredii Hance (SedumalfrediiHance) or Radix Phytolaccae (PhytolaccaacinosaRoxb)；Wherein said Magnetictaxis bacteria is selected from aquatic Spirillum (Aquaspirillum) or addicted to gallbladder Coccus (Bilophococcus).
7. according to claim 1 biologic float bed, also include the permanent magnet being arranged on biologic float bed housing (2) outside, the position being provided with described permanent magnet makes magnetic field be distributed up and down so that Magnetictaxis bacteria is enriched in the root system of plant place bottom filler.
8. according to claim 1 biologic float bed, its hollow flow-guiding cylinder (5) also including being positioned at housing (2) lower section, it is furnished with bundle of capillary tubes (4) inside it.
9., according to the biologic float bed method carrying out original position abatement heavy metal pollution of water body in any one of claim 1-8, it comprises the following steps:
A. biologic float bed it is placed in described in contaminated by heavy metals water body；
B. first time enrichment is carried out by chlorella and Magnetictaxis bacteria heavy metal, again through described super enriching plant for the heavy metal after Magnetictaxis bacteria is enriched with being carried out second time enrichment.
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| CN105347486A (en) * | 2015-11-17 | 2016-02-24 | 仇颖超 | Processing method for wastewater containing heavy metal chromium |
| CN106946309A (en) * | 2017-04-27 | 2017-07-14 | 安徽大学 | A kind of oxygen sustained release, the preparation method and applications for inhaling phosphate material |
| CN109319935A (en) * | 2018-10-30 | 2019-02-12 | 重庆大学 | A kind of functional ecological floating bed quality purifying device for water |
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| CN111302584A (en) * | 2020-04-23 | 2020-06-19 | 南昌鑫淼源环保有限公司 | Municipal sludge treatment system |
| CN114149153A (en) * | 2021-12-21 | 2022-03-08 | 海南大学 | Treatment device and method for heavy metal polluted wastewater |
| CN114534157B (en) * | 2022-02-15 | 2022-08-12 | 北京科技大学 | Method and device for fixing heavy metal in situ in deep sea manganese nodule mining process |
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| CN101407358A (en) * | 2008-11-06 | 2009-04-15 | 天津大学 | Metal peroxide-based oxygen slow release composite material and preparation thereof |
| CN101560018A (en) * | 2009-05-25 | 2009-10-21 | 南京师范大学 | Method for bioremediating waste water containing copper by common dayflower |
| CN202322497U (en) * | 2011-09-08 | 2012-07-11 | 武汉大学 | Multifunctional clear water carrier system |
| CN203890135U (en) * | 2014-01-17 | 2014-10-22 | 浙江卓锦工程技术有限公司 | Floating bed using waste biomass to adsorb heavy-metal-polluted water body |
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